PBE Europe as Axell Wireless 55-165704 55-165704 Cell Enhancer User Manual 80 330501HBKM

Axell Wireless 55-165704 Cell Enhancer 80 330501HBKM

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STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 125 of 500 Power Amplifier (12-018002) 7-Way Connector Pin-outs Connector Pin Signal A1 (large pin) +24V DC A2 (large pin) GND 1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL)
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 126 of 500 9.4.3. 800MHz Line Amplifier (Ext. Amp.) (55-165401) 800MHz Line Amplifier (Ext. Amp.) (55-165401) list of major components section Component Part Component Part Description Qty. Per Assembly9.4.3.3. 02-007206 Bandpass Filter 4 9.4.3.4. 07-015105 Wideband Asymmetric Coupler 2 9.4.3.5. 10-000901 Switched Attenuator 0.25W, 0 - 15dB 2 9.4.3.6. 11-006702 Low Noise Amplifier 1 9.4.3.7. 12-018002K Power Amplifier 1 9.4.3.8. 12-021901 Low Power Amplifier 2 17-001109 AGC Detector Assembly (Logarithmic) 1 17-001117 AGC Detector Assembly 1 9.4.3.9. 17-001201 AGC Attenuator Assembly 2 9.4.3.10. 80-008901 12V (Single) Relay Board 1 9.4.3.11. 94-100004 Dual Diode Assembly 1 9.4.3.12. 96-200047 DC/DC Converter 1 9.4.3.13. 96-300052 12V Switch-Mode PSU 1
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 127 of 500 9.4.3.1. 800MHz Line Amplifier (Ext. Amp.) (55-165401) outline drawing Drawing number 55-1654101
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 128 of 500 9.4.3.2. 800MHz Line Amplifier (Ext. Amp.) (55-165401) system diagram Drawing number 55-165481
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 129 of 500 9.4.3.3. Bandpass Filter (02-007206) The bandpass filters are multi-section designs with a bandwidth dependent upon the passband frequencies, (both tuned to customer requirements). The response shape is basically Chebyshev with a passband design ripple of 0.1dB. The filters are of slot coupled, folded combline design, and are carefully aligned during manufacture in order to optimise the insertion loss, VSWR and intermodulation characteristics of the unit. The tuned elements are silver-plated to reduce surface ohmic losses and maintain a good VSWR figure and 50Ω load at the input and output ports. Being passive devices, the bandpass filters should have an extremely long operational life and require no maintenance. Should a filter be suspect, it is usually most time efficient to replace the module rather than attempt repair or re-tuning. No adjustments should be attempted without full network sweep analysis facilities to monitor both insertion loss and VSWR simultaneously. 02-007206 Specification PARAMETER SPECIFICATION Response type Chebyshev Frequency range 800 - 950MHz * Bandwidth 25MHz * Number of sections 8 Insertion loss 1.2 dB VSWR better than 1.2:1 Connectors SMA female Power handling 100W max operation -20°C to +60°C Temperature range storage -40°C to +70°C Weight 3 kg (typical) *tuned to Customer's specification 9.4.3.4. Wideband Asymmetric Coupler (07-015105) The purpose of Wideband Asymmetric Coupler (07-015105) is to tap off a known portion (in this case 30dB) of RF signal from transmission lines and to combine them, for example through splitter units for different purposes (alarms/monitoring etc.), whilst maintaining an accurate 50Ω load to all ports/interfaces throughout the specified frequency range. They are known formally as directional couplers as they couple power from the RF mainline in one direction only. 07-015105 Specification PARAMETER SPECIFICATION Construction Inductive air gap Frequency 800-2500MHz Through loss 0.4dB (typical) Coupling level -30dB ±0.5dB Isolation N/A Weight <1.0kg Connectors SMA, female operation -20°C to +60°C Temperature range storage -40°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 130 of 500 9.4.3.5. Switched Attenuator 0.25W, 0 - 15dB (10-000901) In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive. Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the gain. 10-000901 provides attenuation from 0 - 15dB in 2 dB steps The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50Ω impedance over their operating frequency at both input and output. 10-000901 Specification PARAMETER SPECIFICATION Attenuation Values 0-15dB Attenuation Steps 1, 2, 4 and 8dB Power Handling 0.25 Watt Attenuation Accuracy ± 1.0 dB Frequency Range DC to 1GHz Impedance 50Ω Connectors SMA VSWR 1.3:1 Weight 0.2kg operation -20°C to +60°C Temperature range storage -40°C to +70°C 9.4.3.6. Low Noise Amplifier (11-006702) The Gallium-Arsenide low noise amplifiers used in 800MHz Line Amplifier (55-165703) are double stage, solid-state low noise amplifiers. Class A circuitry is used throughout the units to ensure excellent linearity and extremely low noise over a very wide dynamic range. The active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely event of a failure, then the complete amplifier should be replaced. This amplifier features its own in-built alarm system which gives a volt-free relay contact type alarm that is easily integrated into the main alarm system. 11-006702 Specification PARAMETER SPECIFICATION Frequency range 800 – 1000MHz Bandwidth <200MHz Gain 29dB (typical) 1dB Compression point 20dBm OIP3 33dBm Input/Output return loss >18dB Noise figure 1.3dB (typical) Power consumption 180mA @ 24V DC Supply voltage 10-24V DC Connectors SMA female operational -10°C to +60°C Temperature range storage -20°C to +70°C Size 90 x 55 x 30.2mm Weight 290gms (approximately)
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 131 of 500 7 8 961 2 3 4 59-Way Pin-Out Graphical Representation Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details Connector pin Signal 1 +Ve input (10-24V) 2 GND 3 Alarm RelayO/P bad 4 Alarm Relay common 5 Alarm Relay good 6 No connection 7 TTL voltage set 8 TTL alarm/0V (good) 9 O/C good/0V bad 9.4.3.7. Power Amplifier (12-018002) This amplifier is a Class A 20W power amplifier from 800-960MHz in a 1 stage balanced configuration. It demonstrates a very high linearity and a very good input/output return loss (RL). It has built in a Current Fault Alarm Function. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. 12-018002 Specification PARAMETER SPECIFICATION Frequency range: 800-960MHz Small signal gain: 30dB Gain flatness: ±1.2dB I/O Return loss: >18dB 1dB compression point: 42.8dBm OIP3: 56dBm Supply voltage: 24V DC Supply current: 5.0Amps (Typical) operational: -10°C to +60°C Temperature range storage: -20°C to +70°C Weight: <2kg (no heatsink)
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 132 of 500 Power Amplifier (12-018002) 7-Way Connector Pin-outs Connector Pin Signal A1 (large pin) +24V DC A2 (large pin) GND 1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL) 9.4.3.8. Low Power Amplifier (12-021901) The low power amplifier used is a triple stage solid-state low-noise amplifier. Class A circuitry is used in the unit to ensure excellent linearity over a very wide dynamic range. The three active devices are very moderately rated to provide a long trouble-free working life. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. There are no adjustments on this amplifier, and in the unlikely event of failure then the entire amplifier should be replaced. Low Power Amplifier (12-021901) Specification PARAMETER SPECIFICATION Frequency range 800-960MHz* Bandwidth 20MHz * Maximum RF output >1.0 Watt Gain 15dB 1dB compression point +30.5dBm 3rd order intercept point +43dBm Noise Figure <6dB VSWR better than 1.5:1 Connectors SMA female Supply 500mA @ 10-15V DC operational -10°C to +60°C Temperature range storage -20°C to +70°C Weight 0.5 kg Size 167x52x25mm * Tuned to Customer’s specification
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 133 of 500 Low Power Amplifier (12-021901) 7-Way Connector Pin-outs Connector Pin Signal A1 (large pin) +24V DC A2 (large pin) GND 1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL) 9.4.3.9. Automatic Gain Control 17-001109 AGC Detector Assembly (Logarithmic) 17-001117 AGC Detector Assembly 17-001201 AGC Attenuator Assembly The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control (AGC) system used in 800MHz Line Amplifier (Ext. Amp.) (55-165401); 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink 800MHz Line Amplifier (Ext. Amp.) (55-165401) is fitted with two differing types of Automatic Gain Control (AGC) system, one linear, and one logarithmic. The AGC with logarithmic detector (17-001117) is fitted in the uplink path and the AGC with linear detector (17-001109) is fitted in the downlink path The AFL Automatic Gain Control system consists of two units, a detector/amplifier and an attenuator. The detector/amplifier unit is inserted in the RF path on the output of the power amplifier, and the attenuator is situated in the RF path between the 1st and 2nd stages of amplification. 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink The attenuator comprises a 50Ω P.I.N diode, voltage-variable attenuator with a range of 3 to 30dB. The attenuation is controlled by a DC voltage which is derived from the associated detector controller board. Normally the attenuator is at minimum attenuation. The detector/amplifier unit monitors the RF level being delivered by the power amplifier, and when a certain threshold is reached it begins to increase the value of the attenuator to limit the RF output to the (factory set) threshold. Therefore overloading of the power amplifier is avoided. The factory set threshold is 1dB below the Enhancer 1dB compression point. Some adjustment of this AGC threshold level is possible, a 10dB range is mostly achieved. It is not recommended under any circumstances to adjust the AGC threshold to a level greater than the 1dB compression point as system degradation will occur.
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 134 of 500 The detector comprises of a 50Ω transmission line with a resistive tap which samples a small portion of the mainline power. The sampled signal is amplified and fed to a conventional half wave diode rectifier, the output of which is a DC voltage proportional to the RF input signal. This DC voltage is passed via an inverting DC amplifier with integrating characteristics, to the output, which drives the attenuation control line of the corresponding AGC attenuator. This unit is fitted at some earlier point in the RF circuit. For small signals, below AGC onset, the output control line will be close to 12V and the AGC attenuator will have minimum attenuation. As the signal level increases the control line voltage will fall, increasing the attenuator value and keeping the system output level at a constant value. AGC Specification (both types) PARAMETER SPECIFICATION Frequency range up to 1000MHz Attenuation range 3 to 30dB Attenuation steps continuously variable VSWR better than 1.2:1 RF Connectors SMA female attenuator 1W Power handling detector/amp >30W (or as required) operation -10°C to +60°C Temperature range storage -20°C to +70°C attenuator pcb 50 x 42 x 21mm Size detector/amp pcb 54 x 42 x 21mm attenuator 90grams Weight detector/amp 100grams 9.4.3.10. 12V (Single) Relay Board (80-008901) The General Purpose Relay Board allows the inversion of signals and the isolation of circuits. It is equipped with a single dual pole change-over relay RL1, with completely isolated wiring, accessed via a 15 way in-line connector. The relay is provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. It’s common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. 80-008901 Specification PARAMETER SPECIFICATION Operating voltage 8 to 30V (floating earth) Alarm threshold Vcc - 1.20 volt +15% Alarm output relay contacts: Max. switch current 1.0Amp Max. switch volts 120Vdc/60VA Max. switch power 24W/60VA Min. switch load 10.0µA/10.0mV Relay isolation 1.5kV Mechanical life >2x107 operations Relay approval BT type 56 Connector details Screw terminals operational -10°C to +60°C Temperature range storage -20°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 135 of 500 9.4.3.11. Dual Diode Assembly (94-100004) The purpose of these dual diode assemblies is to allow two DC voltage sources to be combined, so that the main DC rail within the equipment can be sourced from either a mains driven PSU, or externally through an XLR connector or from dual mains driven PSUs . They are very heavy-duty diodes and they prevent any reverse current from flowing back to their source or the alternative supply rail. Combining diodes such as these will also be used if the equipment is to be powered from external back-up batteries. 9.4.3.12. DC/DC Converter 96-200047 96-200047 is an O.E.M. high power device with a wide input range and 12.5 amp @ 12V (150Watts) output capability used to derive a 12V fixed voltage power supply rail from a higher voltage supply, in this case 12V. In the event of failure this unit should not be repaired, only replaced. 96-200047 Specification PARAMETER SPECIFICATION DC Input Voltage range 19 to 36V DC Output voltage 12V ± 1% Max. current load 12.5Amps Operation -10°C to +60°C Temperature range Storage -20°C to +85°C Working Humidity 20 to 90% RHNC 9.4.3.12. 12V Switch-Mode PSU (96-300052) No routine maintenance of the PSU is required. If a fault is suspected, then the output voltage from the power supply may be measured on its output terminals. This is typically set to 12.2V. The adjustment potentiometer will be found close to the DC output terminals. All the PSUs used in AFL Cell Enhancers are capable of operation from either 110 or 220V nominal AC supplies. The line voltage is sensed automatically, so no adjustment or link setting is needed by the operator. 96-300052 Specification AC Input Supply 110 or 220V nominal Voltage 85 - 265V AC (absolute limits) Frequency 47 to 63Hz DC Output Supply 12V DC (nominal) Voltage 10.5-13.8V (absolute limits) Current 12.5A
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 136 of 500 10. UNIVERSITY STATION MASTER SITE 1 (80-330552-1) Rack C05-CR-06 55-165601 55-165602 55-165502 98-800001 98-700002 55-165507 55-165601 55-165602 55-165711 University Station Master Site 1 (80-330552-1) list of major components section Component Part Component Part Description Qty. Per Assembly10.4.1. 55-165502 800MHz FO HUB Splitter/Combiner 1 10.4.2. 55-165507 Fibre Optic Splitter 1 10.4.3. 55-165601 800MHz FO Hub Amplifier + Filters 2 10.4.4. 55-165602 700MHz FO Hub Amplifier 2 10.4.5. 55-165711 UNIVERSITY ST. SPLITTER 1 1 10.4.6. 98-700002 Optical A/B Switch FC/APC 1 10.4.7. 98-800001 F/O Link Subsystem 1 800MHz FO Hub Amplifier (55-165601)
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 137 of 500 10.1. University Station Master Site 1 (80-330552-1) Rack elevation Drawing number 80-330552
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 138 of 500 10.2. University Station Master Site 1 (80-330552-1) system diagram Drawing number 80-330582-1
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 139 of 500 10.3. University Station Master Site 1 (80-330552-1) Alarm Wiring Diagram Drawing number 80-330522-1
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 140 of 500 10.4 University Station Master Site 1 (80-330552-1) Major Components 10.4.1. 800MHz FO HUB Splitter/Combiner (55-165502) 800MHz FO HUB SPLITTER/COMB (55-165502) List of major components section Component Part Component Part Description Qty. Per Assembly10.4.1.3. 05-002602 900MHZ SPLITTER/COMBINER, 20W 2 10.4.1.4. 05-003302 Four Way Splitter/Combiner 2
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 141 of 500 10.4.1.1. 800MHz FO HUB SPLITTER/COMB (55-165502) Outline Drawing Drawing number 55-1655102
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 142 of 500 10.4.1.2. 800MHz FO HUB SPLITTER/COMB (55-165502) System Diagram Drawing number 55-165582
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 143 of 500 10.4.1.3. 900MHz Splitter/Combiner (05-002602) The Splitter/Combiner used is a device for accurately matching two or more RF signals to single or multiple ports, whilst maintaining an accurate 50Ω load to all inputs/outputs and ensuring that the VSWR and insertion losses are kept to a minimum. Any unused ports should be terminated with an appropriate 50Ω load. Being passive devices, the splitters should have an extremely long operational life and require no maintenance. Should a unit be suspect, it is usually most time efficient to replace the whole module rather than attempt repair or re-tuning. 05-002602 Specification PARAMETER SPECIFICATION Narrowband: 815 – 960MHz Frequency range: Broadband: 800 – 1200MHz Narrowband: 145MHz Bandwidth: Broadband: 400MHz Input ports: 1 Output ports: 2 Narrowband: 3.3dB Insertion loss: Broadband: 3.5dB Return loss input & output: 1.3:1 Impedance: 50Ω Narrowband: >20dB Isolation: Broadband: >18dB MTFB: >180,000 hours Splitting: 20Watts Power rating: Combining: 0.5Watt Connectors: SMA female Weight: 200g (approximately) Size: 54 x 44 x 21mm 10.4.1.4. Four Way Splitter/Combiner (05-003302) The Splitter/Combiner used is a device for accurately matching two or more RF signals to single or multiple ports, whilst maintaining an accurate 50Ω load to all inputs/outputs and ensuring that the VSWR and insertion losses are kept to a minimum. Any unused ports should be terminated with an appropriate 50Ω load. Four Way Splitter (05-003302) Specification PARAMETER SPECIFICATION Frequency range 700-980MHz Bandwidth 180MHz Rejection >14dB Insertion loss <7.0dB (in band) Connectors N type, female Weight <1.5kg operational -20%C to +60%C Temperature range storage -40%C to +70%C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 144 of 500 10.4.2. Fibre Optic Splitter (55-165507) Fibre Optic Splitter (55-165507) is a 1U rack mount tray containing an optical splitter/coupler Fibre Optic Splitter (55-165507) List of Major Sub Components Component Part Component Part Description Qty. Per Assembly 98-100001 Single Mode Optical Splitter/Coupler 1 10.4.2.1. Single Mode Optical Splitter/Coupler (98-100001) Single Mode Optical Splitter/Couplers are used whenever it is necessary to split or combine outputs from optical transmitters or inputs to receivers. Operators should be aware that a small insertion loss (typically 3-4dB) is common with these type of couplers. Single Mode Optical Splitter/Coupler (98-100001) It is an O.E.M unit featuring almost negligible insertion loss to the F/O signal. Extreme caution should be exercised when handling these devices. Special attention should be shown to the connectors; repair of a broken Splitter/Coupler is not possible; replacement is the only option. In the Fibre Optic Splitter (55-165507) in University Station Master Site 1 (80-330552-1), Single Mode Optical Splitter/Coupler (98-100001) is used to split the optical signal from the FO TX module in F/O Link Subsystem (98-700001) into two equal paths. 10.4.3. 800MHz FO Hub Amplifier + Filters (55-165601) Section Component Part Component Part Description Qty. Per Assembly 10.4.3.3. 02-007206 900MHZ 8POLE 25MHz+ B/W "SMA" 6 10.4.3.4. 07-015105 ASYMMETRIC CPLR 30dB 800-2500MHz GA 3 10.4.3.5. 10-000701 SW ATT 0-30dB 0.25W SMA F 2 10.4.3.6. 11-005902K 900MHz LOW NOISE AMP WITH RELAY KIT 1 10.4.3.7. 11-006702K 800-1000MHz LNA 29dB (cw RELAY) KIT 2 10.4.3.8. 12-018002K PA 800-960MHz 20W CLASS A KIT 1 10.4.3.9. 12-021901 Low Power Amplifier 2 17-001109* AGC Detector Assembly (Logarithmic) 1 17-001117* AGC Detector Assembly 1 10.4.3.10. 17-001201* AGC Attenuator Assembly 2 10.4.3.11. 20-001601 12V RELAY BOARD 1 10.4.3.12. 80-008901 12V RELAY PCB ASSEMBLY 1 10.4.3.13. 94-100004 STPS12045TV 60A DUAL DIODE 1 10.4.3.14. 96-200047 DC/DC Converter 1 10.4.3.15. 96-300052 JWS150-12/A PSU (COUTANT LAMBDA) 1 *The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control (AGC) system used in 800MHz FO Hub Amplifier + Filters (55-165601); 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the down link
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 145 of 500 10.4.3.1. 800MHz FO Hub Amplifier + Filters (55-165601) outline drawing drawing number 55-1656101
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 146 of 500 10.4.3.2. 800MHz FO Hub Amplifier + Filters (55-165601) system diagram drawing number 55-165681
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 147 of 500 10.4.3.3. Bandpass Filter (02-007206) The bandpass filters are multi-section designs with a bandwidth dependent upon the passband frequencies, (both tuned to customer requirements). The response shape is basically Chebyshev with a passband design ripple of 0.1dB. The filters are of slot coupled, folded combline design, and are carefully aligned during manufacture in order to optimise the insertion loss, VSWR and intermodulation characteristics of the unit. The tuned elements are silver-plated to reduce surface ohmic losses and maintain a good VSWR figure and 50Ω load at the input and output ports. Being passive devices, the bandpass filters should have an extremely long operational life and require no maintenance. Should a filter be suspect, it is usually most time efficient to replace the module rather than attempt repair or re-tuning. No adjustments should be attempted without full network sweep analysis facilities to monitor both insertion loss and VSWR simultaneously. 02-007206 Specification PARAMETER SPECIFICATION Response type Chebyshev Frequency range 800 - 950MHz * Bandwidth 25MHz * Number of sections 8 Insertion loss 1.2 dB VSWR better than 1.2:1 Connectors SMA female Power handling 100W max operation -20°C to +60°C Temperature range storage -40°C to +70°C Weight 3 kg (typical) *tuned to Customer's specification 10.4.3.4. Wideband Asymmetric Coupler (07-015105) The purpose of Wideband Asymmetric Coupler (07-015105) is to tap off a known portion (in this case 30dB) of RF signal from transmission lines and to combine them, for example through splitter units for different purposes (alarms/monitoring etc.), whilst maintaining an accurate 50Ω load to all ports/interfaces throughout the specified frequency range. They are known formally as directional couplers as they couple power from the RF mainline in one direction only. 07-015105 Specification PARAMETER SPECIFICATION Construction Inductive air gap Frequency 800-2500MHz Through loss 0.4dB (typical) Coupling level -30dB ±0.5dB Isolation N/A Weight <1.0kg Connectors SMA, female operation -20°C to +60°C Temperature range storage -40°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 148 of 500 10.4.3.5. Switched Attenuator 0.25Watt, 0 - 30dB (10-000701) In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive. Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the gain. Switched Attenuator 10-000701 provides attenuation from 0 to 30dB in 2 dB steps The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50Ω impedance over their operating frequency at both input and output. 10-000701 Specification PARAMETER SPECIFICATION Attenuation Values 0-30dB Attenuation Steps 2, 4, 8 and 16dB Power Handling 0.25 Watt Attenuation Accuracy ± 1.0 dB Frequency Range DC to 1GHz Impedance 50Ω Connectors SMA VSWR 1.3:1 Weight 0.2kg operation -20°C to +60°C Temperature range storage -40°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 149 of 500 10.4.3.6. Low Noise Amplifier (11-005902) The Gallium-Arsenide low noise amplifier used in the unit is a double stage, solid-state low noise amplifier. Class A circuitry is used throughout the units to ensure excellent linearity and extremely low noise over a very wide dynamic range. The active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely event of a failure, then the complete amplifier should be replaced. This amplifier features its own in-built alarm system which gives a volt-free relay contact type alarm that is easily integrated into any alarm system. There is a Current Fault Alarm Function, which indicates failure of each one or both RF transistors by a various alarm output options. The amplifier is housed in an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a 9way D-type for DC and alarm outputs. 11-005902 Specification PARAMETER SPECIFICATION Frequency range: 800 – 960MHz * Bandwidth: <170MHz Gain: 19.5dB (typical) 1dB compression point: 21dBm OIP3: 33dBm Input/output return loss: >20dB Noise figure: 1dB (typical) Power consumption: 190mA @ 24V DC Supply voltage: 10-24V DC Connectors: SMA female operational: -10°C to +60°C Temperature range storage: -40°C to +70°C Size: 90 x 55 x 30.2mm Weight: 0.28kg *tuned to Customer's specification LNA ‘D’ Connector Pin-out details Connector pin Signal 1 +Ve input (10-24V) 2 GND 3 Alarm relay O/P bad 4 Alarm relay common 5 Alarm relay good 6 No connection 7 TTL voltage set 8 TTL alarm/0V (good) 9 O/C good/0V bad
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 150 of 500 7 8 961 2 3 4 59-Way Pin-Out Graphical Representation 10.4.3.7. Low Noise Amplifier (11-006702) The Gallium-Arsenide low noise amplifiers used in 800MHz Line Amplifier (55-165703) are double stage, solid-state low noise amplifiers. Class A circuitry is used throughout the units to ensure excellent linearity and extremely low noise over a very wide dynamic range. The active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely event of a failure, then the complete amplifier should be replaced. This amplifier features its own in-built alarm system which gives a volt-free relay contact type alarm that is easily integrated into the main alarm system. 11-006702 Specification PARAMETER SPECIFICATION Frequency range: 800 – 1000MHz Bandwidth: <200MHz Gain: 29dB (typical) 1dB Compression point: 20dBm OIP3: 33dBm Input/Output return loss: >18dB Noise figure: 1.3dB (typical) Power consumption: 180mA @ 24V DC Supply voltage: 10-24V DC Connectors: SMA female operational: -10°C to +60°C Temperature range: storage: -20°C to +70°C Size: 90 x 55 x 30.2mm Weight: 290gms (approximately) Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details Connector pin Signal 1 +Ve input (10-24V) 2 GND 3 Alarm RelayO/P bad 4 Alarm Relay common 5 Alarm Relay good 6 No connection 7 TTL voltage set 8 TTL alarm/0V (good) 9 O/C good/0V bad
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 151 of 500 10.4.3.8. Power Amplifier (12-018002) This amplifier is a Class A 20W power amplifier from 800-960MHz in a 1 stage balanced configuration. It demonstrates a very high linearity and a very good input/output return loss (RL). It has built in a Current Fault Alarm Function. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. 12-018002 Specification PARAMETER SPECIFICATION Frequency range: 800-960MHz Small signal gain: 30dB Gain flatness: ±1.2dB I/O Return loss: >18dB 1dB compression point: 42.8dBm OIP3: 56dBm Supply voltage: 24V DC Supply current: 5.0Amps (Typical) operational: -10°C to +60°C Temperature range storage: -20°C to +70°C Weight: <2kg (no heatsink) Power Amplifier (12-018002) 7-Way Connector Pin-outs Connector Pin Signal A1 (large pin) +24V DC A2 (large pin) GND 1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL)
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 152 of 500 10.4.3.9. Low Power Amplifier (12-021901) The low power amplifier used is a triple stage solid-state low-noise amplifier. Class A circuitry is used in the unit to ensure excellent linearity over a very wide dynamic range. The three active devices are very moderately rated to provide a long trouble-free working life. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. There are no adjustments on this amplifier, and in the unlikely event of failure then the entire amplifier should be replaced. Low Power Amplifier (12-021901) Specification PARAMETER SPECIFICATION Frequency range 800-960MHz* Bandwidth 20MHz * Maximum RF output >1.0 Watt Gain 15dB 1dB compression point +30.5dBm 3rd order intercept point +43dBm Noise Figure <6dB VSWR better than 1.5:1 Connectors SMA female Supply 500mA @ 10-15V DC operational -10°C to +60°C Temperature range storage -20°C to +70°C Weight 0.5 kg Size 167x52x25mm * Tuned to Customer’s specification Low Power Amplifier (12-021901) 7-Way Connector Pin-outs Connector Pin Signal A1 (large pin) +24V DC A2 (large pin) GND 1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL)
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 153 of 500 10.4.3.10. Automatic Gain Control 17-001109 AGC Detector Assembly (Logarithmic) 17-001117 AGC Detector Assembly 17-001201 AGC Attenuator Assembly The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control (AGC) system used in 800MHz FO Hub Amplifier + Filters (55-165601); 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the down link 800MHz FO Hub Amplifier + Filters (55-165601) is fitted with two differing types of Automatic Gain Control (AGC) system, one linear, and one logarithmic. The AGC with logarithmic detector (17-001117) is fitted in the uplink path and the AGC with linear detector (17-001109) is fitted in the downlink path The AFL Automatic Gain Control system consists of two units, a detector/amplifier and an attenuator. The detector/amplifier unit is inserted in the RF path on the output of the power amplifier, and the attenuator is situated in the RF path between the 1st and 2nd stages of amplification. 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the down link The attenuator comprises a 50Ω P.I.N diode, voltage-variable attenuator with a range of 3 to 30dB. The attenuation is controlled by a DC voltage which is derived from the associated detector controller board. Normally the attenuator is at minimum attenuation. The detector/amplifier unit monitors the RF level being delivered by the power amplifier, and when a certain threshold is reached it begins to increase the value of the attenuator to limit the RF output to the (factory set) threshold. Therefore overloading of the power amplifier is avoided. The factory set threshold is 1dB below the Enhancer 1dB compression point. Some adjustment of this AGC threshold level is possible, a 10dB range is mostly achieved. It is not recommended under any circumstances to adjust the AGC threshold to a level greater than the 1dB compression point as system degradation will occur. The detector comprises of a 50Ω transmission line with a resistive tap which samples a small portion of the mainline power. The sampled signal is amplified and fed to a conventional half wave diode rectifier, the output of which is a DC voltage proportional to the RF input signal. This DC voltage is passed via an inverting DC amplifier with integrating characteristics, to the output, which drives the attenuation control line of the corresponding AGC attenuator. This unit is fitted at some earlier point in the RF circuit. For small signals, below AGC onset, the output control line will be close to 12V and the AGC attenuator will have minimum attenuation. As the signal level increases the control line voltage will fall, increasing the attenuator value and keeping the system output level at a constant value.
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 154 of 500 AGC Specification (both types) PARAMETER SPECIFICATION Frequency range up to 1000MHz Attenuation range 3 to 30dB Attenuation steps continuously variable VSWR better than 1.2:1 RF Connectors SMA female attenuator 1W Power handling detector/amp >30W (or as required) operation -10°C to +60°C Temperature range storage -20°C to +70°C attenuator pcb 50 x 42 x 21mm Size detector/amp pcb 54 x 42 x 21mm attenuator 90grams Weight detector/amp 100grams 10.4.3.11. 12V (Dual) Relay Board (20-001601) The General Purpose Relay Board allows the inversion of signals and the isolation of circuits. It is equipped with two dual pole change-over relays with completely isolated wiring, accessed via screw terminals. Both relays are provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. It’s common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. 20-001601 Specification PARAMETER SPECIFICATION Operating voltage: 8 to 30V (floating earth) Alarm threshold: Vcc - 1.20 volt +15% Alarm output relay contacts: Max. switch current: 1.0Amp Max. switch volts: 120Vdc/60VA Max. switch power: 24W/60VA Min. switch load: 10.0µA/10.0mV Relay isolation: 1.5kV Mechanical life: >2x107 operations Relay approval: BT type 56 Connector details: Screw terminals operational: -10°C to +60°C Temperature range storage: -20°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 155 of 500 10.4.3.12. 12V (Single) Relay Board (80-008901) The General Purpose Relay Board allows the inversion of signals and the isolation of circuits. It is equipped with a single dual pole change-over relay RL1, with completely isolated wiring, accessed via a 15 way in-line connector. The relay is provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. It’s common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. 80-008901 Specification PARAMETER SPECIFICATION Operating voltage 8 to 30V (floating earth) Alarm threshold Vcc - 1.20 volt +15% Alarm output relay contacts: Max. switch current 1.0Amp Max. switch volts 120Vdc/60VA Max. switch power 24W/60VA Min. switch load 10.0µA/10.0mV Relay isolation 1.5kV Mechanical life >2x107 operations Relay approval BT type 56 Connector details Screw terminals operational -10°C to +60°C Temperature range storage -20°C to +70°C 10.4.3.13. Dual Diode Assembly (94-100004) The purpose of these dual diode assemblies is to allow two DC voltage sources to be combined, so that the main DC rail within the equipment can be sourced from either a mains driven PSU, or externally through an XLR connector or from dual mains driven PSUs. They are very heavy-duty diodes and they prevent any reverse current from flowing back to their source or the alternative supply rail. Combining diodes such as these will also be used if the equipment is to be powered from external back-up batteries.
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 156 of 500 10.4.3.14. DC/DC Converter 96-200047 96-200047 is an O.E.M. high power device with a wide input range and 12.5 amp @ 12V (150Watts) output capability used to derive a 12V fixed voltage power supply rail from a higher voltage supply, in this case 12V. In the event of failure this unit should not be repaired, only replaced. 96-200047 Specification PARAMETER SPECIFICATION DC Input Voltage range 19 to 36V DC Output voltage 12V ± 1% Max. current load 12.5Amps Operation -10°C to +60°C Temperature range Storage -20°C to +85°C Working Humidity 20 to 90% RHNC 10.4.3.15. 12V Switch-Mode PSU (96-300052) No routine maintenance of the PSU is required. If a fault is suspected, then the output voltage from the power supply may be measured on its output terminals. This is typically set to 12.2V. The adjustment potentiometer will be found close to the DC output terminals. All the PSUs used in AFL Cell Enhancers are capable of operation from either 110 or 220V nominal AC supplies. The line voltage is sensed automatically, so no adjustment or link setting is needed by the operator. 96-300052 Specification AC Input Supply 110 or 220V nominal Voltage 85 - 265V AC (absolute limits) Frequency 47 to 63Hz DC Output Supply 12V DC (nominal) Voltage 10.5-13.8V (absolute limits) Current 12.5A
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 157 of 500 10.4.4. 700MHz FO Hub Amplifier (55-165602) 700MHz FO Hub Amplifier (55-165602) List of major components Section Component Part Component Part Description Qty. Per Assembly 10.4.4.3. 02-007206 900MHZ 8POLE 25MHz+ B/W "SMA" 2 10.4.4.4. 07-015105 ASYMMETRIC CPLR 30dB 800-2500MHz GA 2 10.4.4.5. 10-000701 SW ATT 0-30dB 0.25W SMA F 2 10.4.4.6. 11-005902 900MHz LOW NOISE AMP WITH RELAY KIT 1 10.4.4.7. 11-006702 800-1000MHz LNA 29dB (cw RELAY) KIT 2 10.4.4.8. 12-018002 PA 800-960MHz 20W CLASS A KIT 1 10.4.4.9. 12-021901 Low Power Amplifier 2 17-001109 AGC Detector Assembly (Logarithmic) 1 17-001117 AGC Detector Assembly 1 10.4.4.10. 17-001201 AGC Attenuator Assembly 2 10.4.4.11. 20-001601 12V RELAY BOARD 1 10.4.4.12. 80-008901 12V RELAY PCB ASSEMBLY 1 10.4.4.13. 94-100004 STPS12045TV 60A DUAL DIODE 1 10.4.4.14. 96-200047 DC/DC Converter 1 10.4.4.15. 96-300052 JWS150-12/A PSU (COUTANT LAMBDA) 1 *The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control (AGC) system used in 700MHz FO Hub Amplifier (55-165602); 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 158 of 500 10.4.4.1. 700MHz FO Hub Amplifier (55-165602) Outline Drawing drawing number 55-1656102
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 159 of 500 10.4.4.2. 700MHz FO Hub Amplifier (55-165602) system diagram drawing number 55-165682
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 160 of 500 10.4.4.3. Bandpass Filter (02-007206) The bandpass filters are multi-section designs with a bandwidth dependent upon the passband frequencies, (both tuned to customer requirements). The response shape is basically Chebyshev with a passband design ripple of 0.1dB. The filters are of slot coupled, folded combline design, and are carefully aligned during manufacture in order to optimise the insertion loss, VSWR and intermodulation characteristics of the unit. The tuned elements are silver-plated to reduce surface ohmic losses and maintain a good VSWR figure and 50Ω load at the input and output ports. Being passive devices, the bandpass filters should have an extremely long operational life and require no maintenance. Should a filter be suspect, it is usually most time efficient to replace the module rather than attempt repair or re-tuning. No adjustments should be attempted without full network sweep analysis facilities to monitor both insertion loss and VSWR simultaneously. 02-007206 Specification PARAMETER SPECIFICATION Response type Chebyshev Frequency range 800 - 950MHz * Bandwidth 25MHz * Number of sections 8 Insertion loss 1.2 dB VSWR better than 1.2:1 Connectors SMA female Power handling 100W max operation -20°C to +60°C Temperature range storage -40°C to +70°C Weight 3 kg (typical) *tuned to Customer's specification 10.4.4.4. Wideband Asymmetric Coupler (07-015105) The purpose of Wideband Asymmetric Coupler (07-015105) is to tap off a known portion (in this case 30dB) of RF signal from transmission lines and to combine them, for example through splitter units for different purposes (alarms/monitoring etc.), whilst maintaining an accurate 50Ω load to all ports/interfaces throughout the specified frequency range. They are known formally as directional couplers as they couple power from the RF mainline in one direction only. 07-015105 Specification PARAMETER SPECIFICATION Construction Inductive air gap Frequency 800-2500MHz Through loss 0.4dB (typical) Coupling level -30dB ±0.5dB Isolation N/A Weight <1.0kg Connectors SMA, female operation -20°C to +60°C Temperature range storage -40°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 161 of 500 10.4.4.5. Switched Attenuator 0.25Watt, 0 - 30dB (10-000701) In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive. Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the gain. Switched Attenuator 10-000701 provides attenuation from 0 to 30dB in 2 dB steps The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50Ω impedance over their operating frequency at both input and output. 10-000701 Specification PARAMETER SPECIFICATION Attenuation Values 0-30dB Attenuation Steps 2, 4, 8 and 16dB Power Handling 0.25 Watt Attenuation Accuracy ± 1.0 dB Frequency Range DC to 1GHz Impedance 50Ω Connectors SMA VSWR 1.3:1 Weight 0.2kg operation -20°C to +60°C Temperature range storage -40°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 162 of 500 10.4.4.6. Low Noise Amplifier (11-005902) The Gallium-Arsenide low noise amplifier used in the unit is a double stage, solid-state low noise amplifier. Class A circuitry is used throughout the units to ensure excellent linearity and extremely low noise over a very wide dynamic range. The active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely event of a failure, then the complete amplifier should be replaced. This amplifier features its own in-built alarm system which gives a volt-free relay contact type alarm that is easily integrated into any alarm system. There is a Current Fault Alarm Function, which indicates failure of each one or both RF transistors by a various alarm output options. The amplifier is housed in an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a 9way D-type for DC and alarm outputs. 11-005902 Specification PARAMETER SPECIFICATION Frequency range: 800 – 960MHz * Bandwidth: <170MHz Gain: 19.5dB (typical) 1dB compression point: 21dBm OIP3: 33dBm Input/output return loss: >20dB Noise figure: 1dB (typical) Power consumption: 190mA @ 24V DC Supply voltage: 10-24V DC Connectors: SMA female operational: -10°C to +60°C Temperature range storage: -40°C to +70°C Size: 90 x 55 x 30.2mm Weight: 0.28kg *tuned to Customer's specification LNA ‘D’ Connector Pin-out details Connector pin Signal 1 +Ve input (10-24V) 2 GND 3 Alarm relay O/P bad 4 Alarm relay common 5 Alarm relay good 6 No connection 7 TTL voltage set 8 TTL alarm/0V (good) 9 O/C good/0V bad
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 163 of 500 7 8 961 2 3 4 59-Way Pin-Out Graphical Representation 10.4.4.7. Low Noise Amplifier (11-006702) The Gallium-Arsenide low noise amplifiers used in 800MHz Line Amplifier (55-165703) are double stage, solid-state low noise amplifiers. Class A circuitry is used throughout the units to ensure excellent linearity and extremely low noise over a very wide dynamic range. The active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely event of a failure, then the complete amplifier should be replaced. This amplifier features its own in-built alarm system which gives a volt-free relay contact type alarm that is easily integrated into the main alarm system. 11-006702 Specification PARAMETER SPECIFICATION Frequency range: 800 – 1000MHz Bandwidth: <200MHz Gain: 29dB (typical) 1dB Compression point: 20dBm OIP3: 33dBm Input/Output return loss: >18dB Noise figure: 1.3dB (typical) Power consumption: 180mA @ 24V DC Supply voltage: 10-24V DC Connectors: SMA female operational: -10°C to +60°C Temperature range: storage: -20°C to +70°C Size: 90 x 55 x 30.2mm Weight: 290gms (approximately) Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details Connector pin Signal 1 +Ve input (10-24V) 2 GND 3 Alarm RelayO/P bad 4 Alarm Relay common 5 Alarm Relay good 6 No connection 7 TTL voltage set 8 TTL alarm/0V (good) 9 O/C good/0V bad
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 164 of 500 10.4.4.8. Power Amplifier (12-018002) This amplifier is a Class A 20W power amplifier from 800-960MHz in a 1 stage balanced configuration. It demonstrates a very high linearity and a very good input/output return loss (RL). It has built in a Current Fault Alarm Function. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. 12-018002 Specification PARAMETER SPECIFICATION Frequency range: 800-960MHz Small signal gain: 30dB Gain flatness: ±1.2dB I/O Return loss: >18dB 1dB compression point: 42.8dBm OIP3: 56dBm Supply voltage: 24V DC Supply current: 5.0Amps (Typical) operational: -10°C to +60°C Temperature range storage: -20°C to +70°C Weight: <2kg (no heatsink) Power Amplifier (12-018002) 7-Way Connector Pin-outs Connector Pin Signal A1 (large pin) +24V DC A2 (large pin) GND 1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL)
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 165 of 500 10.4.4.9. Low Power Amplifier (12-021901) The low power amplifier used is a triple stage solid-state low-noise amplifier. Class A circuitry is used in the unit to ensure excellent linearity over a very wide dynamic range. The three active devices are very moderately rated to provide a long trouble-free working life. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. There are no adjustments on this amplifier, and in the unlikely event of failure then the entire amplifier should be replaced. Low Power Amplifier (12-021901) Specification PARAMETER SPECIFICATION Frequency range 800-960MHz* Bandwidth 20MHz * Maximum RF output >1.0 Watt Gain 15dB 1dB compression point +30.5dBm 3rd order intercept point +43dBm Noise Figure <6dB VSWR better than 1.5:1 Connectors SMA female Supply 500mA @ 10-15V DC operational -10°C to +60°C Temperature range storage -20°C to +70°C Weight 0.5 kg Size 167x52x25mm * Tuned to Customer’s specification Low Power Amplifier (12-021901) 7-Way Connector Pin-outs Connector Pin Signal A1 (large pin) +24V DC A2 (large pin) GND 1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL)
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 166 of 500 10.4.4.10. Automatic Gain Control 17-001109 AGC Detector Assembly (Logarithmic) 17-001117 AGC Detector Assembly 17-001201 AGC Attenuator Assembly The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control (AGC) system used in 700MHz FO Hub Amplifier (55-165602); 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink 700MHz FO Hub Amplifier (55-165602) is fitted with two differing types of Automatic Gain Control (AGC) system, one linear, and one logarithmic. The AGC with logarithmic detector (17-001117) is fitted in the uplink path and the AGC with linear detector (17-001109) is fitted in the downlink path The AFL Automatic Gain Control system consists of two units, a detector/amplifier and an attenuator. The detector/amplifier unit is inserted in the RF path on the output of the power amplifier, and the attenuator is situated in the RF path between the 1st and 2nd stages of amplification. 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink The attenuator comprises a 50Ω P.I.N diode, voltage-variable attenuator with a range of 3 to 30dB. The attenuation is controlled by a DC voltage which is derived from the associated detector controller board. Normally the attenuator is at minimum attenuation. The detector/amplifier unit monitors the RF level being delivered by the power amplifier, and when a certain threshold is reached it begins to increase the value of the attenuator to limit the RF output to the (factory set) threshold. Therefore overloading of the power amplifier is avoided. The factory set threshold is 1dB below the Enhancer 1dB compression point. Some adjustment of this AGC threshold level is possible, a 10dB range is mostly achieved. It is not recommended under any circumstances to adjust the AGC threshold to a level greater than the 1dB compression point as system degradation will occur. The detector comprises of a 50Ω transmission line with a resistive tap which samples a small portion of the mainline power. The sampled signal is amplified and fed to a conventional half wave diode rectifier, the output of which is a DC voltage proportional to the RF input signal. This DC voltage is passed via an inverting DC amplifier with integrating characteristics, to the output, which drives the attenuation control line of the corresponding AGC attenuator. This unit is fitted at some earlier point in the RF circuit. For small signals, below AGC onset, the output control line will be close to 12V and the AGC attenuator will have minimum attenuation. As the signal level increases the control line voltage will fall, increasing the attenuator value and keeping the system output level at a constant value.
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 167 of 500 AGC Specification (both types) PARAMETER SPECIFICATION Frequency range up to 1000MHz Attenuation range 3 to 30dB Attenuation steps continuously variable VSWR better than 1.2:1 RF Connectors SMA female attenuator 1W Power handling detector/amp >30W (or as required) operation -10°C to +60°C Temperature range storage -20°C to +70°C attenuator pcb 50 x 42 x 21mm Size detector/amp pcb 54 x 42 x 21mm attenuator 90grams Weight detector/amp 100grams 10.4.4.11. 12V (Dual) Relay Board (20-001601) The General Purpose Relay Board allows the inversion of signals and the isolation of circuits. It is equipped with two dual pole change-over relays with completely isolated wiring, accessed via screw terminals. Both relays are provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. It’s common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. 20-001601 Specification PARAMETER SPECIFICATION Operating voltage: 8 to 30V (floating earth) Alarm threshold: Vcc - 1.20 volt +15% Alarm output relay contacts: Max. switch current: 1.0Amp Max. switch volts: 120Vdc/60VA Max. switch power: 24W/60VA Min. switch load: 10.0µA/10.0mV Relay isolation: 1.5kV Mechanical life: >2x107 operations Relay approval: BT type 56 Connector details: Screw terminals operational: -10°C to +60°C Temperature range storage: -20°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 168 of 500 10.4.4.12. 12V (Single) Relay Board (80-008901) The General Purpose Relay Board allows the inversion of signals and the isolation of circuits. It is equipped with a single dual pole change-over relay RL1, with completely isolated wiring, accessed via a 15 way in-line connector. The relay is provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. It’s common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. 80-008901 Specification PARAMETER SPECIFICATION Operating voltage 8 to 30V (floating earth) Alarm threshold Vcc - 1.20 volt +15% Alarm output relay contacts: Max. switch current 1.0Amp Max. switch volts 120Vdc/60VA Max. switch power 24W/60VA Min. switch load 10.0µA/10.0mV Relay isolation 1.5kV Mechanical life >2x107 operations Relay approval BT type 56 Connector details Screw terminals operational -10°C to +60°C Temperature range storage -20°C to +70°C 10.4.4.13. Dual Diode Assembly (94-100004) The purpose of these dual diode assemblies is to allow two DC voltage sources to be combined, so that the main DC rail within the equipment can be sourced from either a mains driven PSU, or externally through an XLR connector or from dual mains driven PSUs. They are very heavy-duty diodes and they prevent any reverse current from flowing back to their source or the alternative supply rail. Combining diodes such as these will also be used if the equipment is to be powered from external back-up batteries. 10.4.4.14. DC/DC Converter 96-200047 96-200047 is an O.E.M. high power device with a wide input range and 12.5 amp @ 12V (150Watts) output capability used to derive a 12V fixed voltage power supply rail from a higher voltage supply, in this case 12V. In the event of failure this unit should not be repaired, only replaced. 96-200047 Specification PARAMETER SPECIFICATION DC Input Voltage range 19 to 36V DC Output voltage 12V ± 1% Max. current load 12.5Amps Operation -10°C to +60°C Temperature range Storage -20°C to +85°C Working Humidity 20 to 90% RHNC
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 169 of 500 10.4.4.15. 12V Switch-Mode PSU (96-300052) No routine maintenance of the PSU is required. If a fault is suspected, then the output voltage from the power supply may be measured on its output terminals. This is typically set to 12.2V. The adjustment potentiometer will be found close to the DC output terminals. All the PSUs used in AFL Cell Enhancers are capable of operation from either 110 or 220V nominal AC supplies. The line voltage is sensed automatically, so no adjustment or link setting is needed by the operator. 96-300052 Specification AC Input Supply 110 or 220V nominal Voltage 85 - 265V AC (absolute limits) Frequency 47 to 63Hz DC Output Supply 12V DC (nominal) Voltage 10.5-13.8V (absolute limits) Current 12.5A
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 170 of 500 10.4.5. University Station Splitter 1 (55-165711) University Station Splitter 1 (55-165711) list of major components section Component Part Component Part Description Qty. Per Assembly 10.4.5.3. 05-003005 3 PORT THC 900MHz 1 10.4.5.4. 07-015102 ASYMMETRIC CPLR 10dB 800-2500MHz GA 4
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 171 of 500 UNIVERSITY STATION. SPLITTER 11:2 55-1657111PB17/10/2007GD17/10/2007AA24/09/07OUTLINE DRAWINGPL490.00150.00100.00PORT JA2PORT JA3PORT JA1PORT JC2PORT JC1PORT JB2PORT JB1PORT I1PORT I25x HOLES SUITABLE FOR M5 FIXINGS10.083.0543523.0PRODUCT NUMBER : 55-165711MATERIAL : CHASSIS - ALUMINIUMFINISH : IRIDITECONNECTORS : 'N' TYPE SOCKET180.0AA ORIGINAL ISSUE PL3.0033.063.0 10.4.5.1. University Station Splitter 1 (55-165711) outline drawing drawing number 55-1657111
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 172 of 500 10.4.5.2. University Station Splitter 1 (55-165711) system diagram drawing number 55-165791
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 173 of 500 10.4.5.3. 2-Way Splitter/Combiner (05-003005) This printed circuit based Splitter/Combiner is a device for accurately matching two or more RF signals to single or multiple ports, whilst maintaining an accurate 50Ω load to all inputs/outputs and ensuring that the VSWR and insertion losses are kept to a minimum. Any unused ports should be terminated with an appropriate 50Ω load. (05-003005) Specification PARAMETER SPECIFICATION Frequency Range 800 - 1000 MHz Input Ports 2 Output Ports 1 Insertion Loss <3.3 dB Isolation >18 dB VSWR 1.3:1 Power Rating as a Splitter 50 Watts Power Rating as a Combiner 5 Watts Mechanical Wall mount case Weight <1.5kg RF Connectors ‘N’ female Dimensions 70mm x 63mm x 21mm (excludes connectors) operational -20%C to +60%C Temperature range: storage -40%C to +70%C 10.4.5.4. Wideband Asymmetric Coupler (07-015102) The purpose of Wideband Asymmetric Coupler (07-015102) is to tap off a known portion (in this case 10dB) of RF signal from transmission lines and to combine them, for example through splitter units for different purposes (alarms/monitoring etc.), whilst maintaining an accurate 50Ω load to all ports/interfaces throughout the specified frequency range. They are known formally as directional couplers as they couple power from the RF mainline in one direction only. 07-015102 Specification PARAMETER SPECIFICATION Frequency Range 800 - 2500 MHz Coupling Value 10 dB ± 1.0 dB Main Line Insertion Loss <1.6 dB VSWR 1.4:1 Directivity >18 dB Power Rating 200 Watts RF Connectors ‘N’ female operation -20°C to +60°C Temperature range storage -40°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 174 of 500 10.4.6. Optical AB Switch FC/APC (98-700002) Optical A/B Switch FC/APC (98-700002) an O.E.M. sourced Fibre Optic relay supplied as a 1U rack mount tray. 98-700002 allows for the automatic switching between two optical inputs to provide a common optical output. Manual selection of the input is also possible via toggle switches on the front panel. 98-700002 Specification PARAMETER SPECIFICATION Electrical Characteristics Power Supply Voltage 100 - 240 VAC Power Supply Frequency 50 - 60 Hz Optical Characteristics Operating Wavelength 1200 – 1610nm Optical Input Range +20 dBm Optical Insertion Loss 2.0 dB Optical Trip Threshold/Meter Range -35 - +20 dBm Optical Switch Speed 15ms Backreflection Tolerance -50dB Environmental and Physical Characteristics Optical Connectors FC/APC Operating Temp. Range +10 to +40°C Storage Temp. Range -40 to +80 °C Humidity 5 to 90 % RHNC Weight 2.2 kg (6 lbs) Dimensions 483 x 361 x 44mm (19.0 x 14.2 x 1.72 in.) 10.4.7. F/O Link Subsystem (98-800001) F/O Link Subsystem (98-800001) is an O.E.M. sourced Optical Tranceiver package containing discreet TX and RX modules and supplied as a 1U rack mount tray Parameter Specification Optical Output Power 4 mW Wavelength, peak 1310 1550 nm Frequency Response, 50 to 2.2 GHz ± 1.5 dB Input and Output VSWR 1.5:1 Link Gain (2) 0 dB Output Noise Floor (1) -137 dBm/Hz Input 3rd Order Intercept (1) 30 dBm Operating Temperature −30 to +75°C Storage Temperature −40 to +85°C Maximum RF Input to Transmitter +20 dBm Maximum Optical Input to Receiver 6 mW A.C. Supply Voltage 90 – 265 VAC Dimensions 483 x 457 x 44mm (19.0 x 18 x 1.72 in.) (1) SFDR, Noise and IP3 specified with 5 dB optical loss. (2) Link Gain specified with 1 meter fiber.
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 175 of 500 11. UNIVERSITY STATION MASTER SITE 2 (80-330552-2) Rack C05-CR-07 55-165601 55-165602 55-165603 98-800001 98-700002 55-165507 55-165601 55-165602 55-165711 University Station Master Site 2 (80-330552-2) list of major components Section Component Part Component Part Description Qty. Per Assembly11.4.1. 55-165507 Fibre Optic Splitter 1 11.4.2. 55-165601 800MHz FO HUB AMP + FILTERS 2 11.4.3. 55-165602 700MHz FO Hub Amplifier 2 11.4.4. 55-165603 700MHz FO HUB Splitter/Combiner 1 11.4.5. 55-165712 UNIVERSITY ST. SPLITTER 2 1 11.4.6. 98-700002 Optical A/B Switch FC/APC 1 11.4.7. 98-800001 F/O Link Subsystem 1
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 176 of 500 11.1. University Station Master Site 2 (80-330552-1) Rack elevation Drawing number 80-330552
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 177 of 500 11.2. University Station Master Site 2 (80-330552-1) system diagram Drawing number 80-330582-1
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 178 of 500 11.3. University Station Master Site 2 (80-330552-1) Alarm Wiring Diagram Drawing number 80-330522-1
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 179 of 500 11.4 University Station Master Site 2 (80-330552-1) Major Components 11.4.1. Fibre Optic Splitter (55-165507) Fibre Optic Splitter (55-165507) is a 1U rack mount tray containing an optical splitter/coupler Fibre Optic Splitter (55-165507) List of Major Sub Components Component Part Component Part Description Qty. Per Assembly 98-100001 Single Mode Optical Splitter/Coupler 1 11.4.1.1. Single Mode Optical Splitter/Coupler (98-100001) Single Mode Optical Splitter/Couplers are used whenever it is necessary to split or combine outputs from optical transmitters or inputs to receivers. Operators should be aware that a small insertion loss (typically 3-4dB) is common with these type of couplers. Single Mode Optical Splitter/Coupler (98-100001) It is an O.E.M unit featuring almost negligible insertion loss to the F/O signal. Extreme caution should be exercised when handling these devices. Special attention should be shown to the connectors; repair of a broken Splitter/Coupler is not possible; replacement is the only option. In the Fibre Optic Splitter (55-165507) in University Station Master Site 1 (80-330552-1), Single Mode Optical Splitter/Coupler (98-100001) is used to split the optical signal from the FO TX module in F/O Link Subsystem (98-700001) into two equal paths.
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 180 of 500 11.4.2. 800MHz FO Hub Amplifier + Filters (55-165601) Section Component Part Component Part Description Qty. Per Assembly 11.4.2.3. 02-007206 900MHZ 8POLE 25MHz+ B/W "SMA" 6 11.4.2.4. 07-015105 ASYMMETRIC CPLR 30dB 800-2500MHz GA 3 11.4.2.5. 10-000701 SW ATT 0-30dB 0.25W SMA F 2 11.4.2.6. 11-005902K 900MHz LOW NOISE AMP WITH RELAY KIT 1 11.4.2.7. 11-006702K 800-1000MHz LNA 29dB (cw RELAY) KIT 2 11.4.2.8. 12-018002K PA 800-960MHz 20W CLASS A KIT 1 11.4.2.9. 12-021901 Low Power Amplifier 2 17-001109* AGC Detector Assembly (Logarithmic) 1 17-001117* AGC Detector Assembly 1 11.4.2.10. 17-001201* AGC Attenuator Assembly 2 11.4.2.11. 20-001601 12V RELAY BOARD 1 11.4.2.12. 80-008901 12V RELAY PCB ASSEMBLY 1 11.4.2.13. 94-100004 STPS12045TV 60A DUAL DIODE 1 11.4.2.14. 96-200047 DC/DC Converter 11.4.2.15. 96-300052 JWS150-12/A PSU (COUTANT LAMBDA) 1 *The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control (AGC) system used in 800MHz FO Hub Amplifier + Filters (55-165601); 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the down link
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 181 of 500 11.4.2.1. 800MHz FO Hub Amplifier + Filters (55-165601) outline drawing drawing number 55-1656101
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 182 of 500 11.4.2.2. 800MHz FO Hub Amplifier + Filters (55-165601) system diagram drawing number 55-165681
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 183 of 500 11.4.2.3. Bandpass Filter (02-007206) The bandpass filters are multi-section designs with a bandwidth dependent upon the passband frequencies, (both tuned to customer requirements). The response shape is basically Chebyshev with a passband design ripple of 0.1dB. The filters are of slot coupled, folded combline design, and are carefully aligned during manufacture in order to optimise the insertion loss, VSWR and intermodulation characteristics of the unit. The tuned elements are silver-plated to reduce surface ohmic losses and maintain a good VSWR figure and 50Ω load at the input and output ports. Being passive devices, the bandpass filters should have an extremely long operational life and require no maintenance. Should a filter be suspect, it is usually most time efficient to replace the module rather than attempt repair or re-tuning. No adjustments should be attempted without full network sweep analysis facilities to monitor both insertion loss and VSWR simultaneously. 02-007206 Specification PARAMETER SPECIFICATION Response type Chebyshev Frequency range 800 - 950MHz * Bandwidth 25MHz * Number of sections 8 Insertion loss 1.2 dB VSWR better than 1.2:1 Connectors SMA female Power handling 100W max operation -20°C to +60°C Temperature range storage -40°C to +70°C Weight 3 kg (typical) *tuned to Customer's specification 11.4.2.4. Wideband Asymmetric Coupler (07-015105) The purpose of Wideband Asymmetric Coupler (07-015105) is to tap off a known portion (in this case 30dB) of RF signal from transmission lines and to combine them, for example through splitter units for different purposes (alarms/monitoring etc.), whilst maintaining an accurate 50Ω load to all ports/interfaces throughout the specified frequency range. They are known formally as directional couplers as they couple power from the RF mainline in one direction only. 07-015105 Specification PARAMETER SPECIFICATION Construction Inductive air gap Frequency 800-2500MHz Through loss 0.4dB (typical) Coupling level -30dB ±0.5dB Isolation N/A Weight <1.0kg Connectors SMA, female operation -20°C to +60°C Temperature range storage -40°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 184 of 500 11.4.2.5. Switched Attenuator 0.25Watt, 0 - 30dB (10-000701) In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive. Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the gain. Switched Attenuator 10-000701 provides attenuation from 0 to 30dB in 2 dB steps The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50Ω impedance over their operating frequency at both input and output. 10-000701 Specification PARAMETER SPECIFICATION Attenuation Values 0-30dB Attenuation Steps 2, 4, 8 and 16dB Power Handling 0.25 Watt Attenuation Accuracy ± 1.0 dB Frequency Range DC to 1GHz Impedance 50Ω Connectors SMA VSWR 1.3:1 Weight 0.2kg operation -20°C to +60°C Temperature range storage -40°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 185 of 500 11.4.2.6. Low Noise Amplifier (11-005902) The Gallium-Arsenide low noise amplifier used in the unit is a double stage, solid-state low noise amplifier. Class A circuitry is used throughout the units to ensure excellent linearity and extremely low noise over a very wide dynamic range. The active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely event of a failure, then the complete amplifier should be replaced. This amplifier features its own in-built alarm system which gives a volt-free relay contact type alarm that is easily integrated into any alarm system. There is a Current Fault Alarm Function, which indicates failure of each one or both RF transistors by a various alarm output options. The amplifier is housed in an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a 9way D-type for DC and alarm outputs. 11-005902 Specification PARAMETER SPECIFICATION Frequency range: 800 – 960MHz * Bandwidth: <170MHz Gain: 19.5dB (typical) 1dB compression point: 21dBm OIP3: 33dBm Input/output return loss: >20dB Noise figure: 1dB (typical) Power consumption: 190mA @ 24V DC Supply voltage: 10-24V DC Connectors: SMA female operational: -10°C to +60°C Temperature range storage: -40°C to +70°C Size: 90 x 55 x 30.2mm Weight: 0.28kg *tuned to Customer's specification LNA ‘D’ Connector Pin-out details Connector pin Signal 1 +Ve input (10-24V) 2 GND 3 Alarm relay O/P bad 4 Alarm relay common 5 Alarm relay good 6 No connection 7 TTL voltage set 8 TTL alarm/0V (good) 9 O/C good/0V bad
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 186 of 500 7 8 961 2 3 4 59-Way Pin-Out Graphical Representation 11.4.2.7. Low Noise Amplifier (11-006702) The Gallium-Arsenide low noise amplifiers used in 800MHz Line Amplifier (55-165703) are double stage, solid-state low noise amplifiers. Class A circuitry is used throughout the units to ensure excellent linearity and extremely low noise over a very wide dynamic range. The active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely event of a failure, then the complete amplifier should be replaced. This amplifier features its own in-built alarm system which gives a volt-free relay contact type alarm that is easily integrated into the main alarm system. 11-006702 Specification PARAMETER SPECIFICATION Frequency range: 800 – 1000MHz Bandwidth: <200MHz Gain: 29dB (typical) 1dB Compression point: 20dBm OIP3: 33dBm Input/Output return loss: >18dB Noise figure: 1.3dB (typical) Power consumption: 180mA @ 24V DC Supply voltage: 10-24V DC Connectors: SMA female operational: -10°C to +60°C Temperature range: storage: -20°C to +70°C Size: 90 x 55 x 30.2mm Weight: 290gms (approximately) Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details Connector pin Signal 1 +Ve input (10-24V) 2 GND 3 Alarm RelayO/P bad 4 Alarm Relay common 5 Alarm Relay good 6 No connection 7 TTL voltage set 8 TTL alarm/0V (good) 9 O/C good/0V bad
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 187 of 500 11.4.2.8. Power Amplifier (12-018002) This amplifier is a Class A 20W power amplifier from 800-960MHz in a 1 stage balanced configuration. It demonstrates a very high linearity and a very good input/output return loss (RL). It has built in a Current Fault Alarm Function. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. 12-018002 Specification PARAMETER SPECIFICATION Frequency range: 800-960MHz Small signal gain: 30dB Gain flatness: ±1.2dB I/O Return loss: >18dB 1dB compression point: 42.8dBm OIP3: 56dBm Supply voltage: 24V DC Supply current: 5.0Amps (Typical) operational: -10°C to +60°C Temperature range storage: -20°C to +70°C Weight: <2kg (no heatsink) Power Amplifier (12-018002) 7-Way Connector Pin-outs Connector Pin Signal A1 (large pin) +24V DC A2 (large pin) GND 1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL)
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 188 of 500 11.4.2.9. Low Power Amplifier (12-021901) The low power amplifier used is a triple stage solid-state low-noise amplifier. Class A circuitry is used in the unit to ensure excellent linearity over a very wide dynamic range. The three active devices are very moderately rated to provide a long trouble-free working life. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. There are no adjustments on this amplifier, and in the unlikely event of failure then the entire amplifier should be replaced. Low Power Amplifier (12-021901) Specification PARAMETER SPECIFICATION Frequency range 800-960MHz* Bandwidth 20MHz * Maximum RF output >1.0 Watt Gain 15dB 1dB compression point +30.5dBm 3rd order intercept point +43dBm Noise Figure <6dB VSWR better than 1.5:1 Connectors SMA female Supply 500mA @ 10-15V DC operational -10°C to +60°C Temperature range storage -20°C to +70°C Weight 0.5 kg Size 167x52x25mm * Tuned to Customer’s specification Low Power Amplifier (12-021901) 7-Way Connector Pin-outs Connector Pin Signal A1 (large pin) +24V DC A2 (large pin) GND 1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL)
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 189 of 500 11.4.2.10. Automatic Gain Control 17-001109 AGC Detector Assembly (Logarithmic) 17-001117 AGC Detector Assembly 17-001201 AGC Attenuator Assembly The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control (AGC) system used in 800MHz FO Hub Amplifier + Filters (55-165601); 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the down link 800MHz FO Hub Amplifier + Filters (55-165601) is fitted with two differing types of Automatic Gain Control (AGC) system, one linear, and one logarithmic. The AGC with logarithmic detector (17-001117) is fitted in the uplink path and the AGC with linear detector (17-001109) is fitted in the downlink path The AFL Automatic Gain Control system consists of two units, a detector/amplifier and an attenuator. The detector/amplifier unit is inserted in the RF path on the output of the power amplifier, and the attenuator is situated in the RF path between the 1st and 2nd stages of amplification. 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the down link The attenuator comprises a 50Ω P.I.N diode, voltage-variable attenuator with a range of 3 to 30dB. The attenuation is controlled by a DC voltage which is derived from the associated detector controller board. Normally the attenuator is at minimum attenuation. The detector/amplifier unit monitors the RF level being delivered by the power amplifier, and when a certain threshold is reached it begins to increase the value of the attenuator to limit the RF output to the (factory set) threshold. Therefore overloading of the power amplifier is avoided. The factory set threshold is 1dB below the Enhancer 1dB compression point. Some adjustment of this AGC threshold level is possible, a 10dB range is mostly achieved. It is not recommended under any circumstances to adjust the AGC threshold to a level greater than the 1dB compression point as system degradation will occur. The detector comprises of a 50Ω transmission line with a resistive tap which samples a small portion of the mainline power. The sampled signal is amplified and fed to a conventional half wave diode rectifier, the output of which is a DC voltage proportional to the RF input signal. This DC voltage is passed via an inverting DC amplifier with integrating characteristics, to the output, which drives the attenuation control line of the corresponding AGC attenuator. This unit is fitted at some earlier point in the RF circuit. For small signals, below AGC onset, the output control line will be close to 12V and the AGC attenuator will have minimum attenuation. As the signal level increases the control line voltage will fall, increasing the attenuator value and keeping the system output level at a constant value.
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 190 of 500 AGC Specification (both types) PARAMETER SPECIFICATION Frequency range up to 1000MHz Attenuation range 3 to 30dB Attenuation steps continuously variable VSWR better than 1.2:1 RF Connectors SMA female attenuator 1W Power handling detector/amp >30W (or as required) operation -10°C to +60°C Temperature range storage -20°C to +70°C attenuator pcb 50 x 42 x 21mm Size detector/amp pcb 54 x 42 x 21mm attenuator 90grams Weight detector/amp 100grams 11.4.2.11. 12V (Dual) Relay Board (20-001601) The General Purpose Relay Board allows the inversion of signals and the isolation of circuits. It is equipped with two dual pole change-over relays with completely isolated wiring, accessed via screw terminals. Both relays are provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. It’s common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. 20-001601 Specification PARAMETER SPECIFICATION Operating voltage: 8 to 30V (floating earth) Alarm threshold: Vcc - 1.20 volt +15% Alarm output relay contacts: Max. switch current: 1.0Amp Max. switch volts: 120Vdc/60VA Max. switch power: 24W/60VA Min. switch load: 10.0µA/10.0mV Relay isolation: 1.5kV Mechanical life: >2x107 operations Relay approval: BT type 56 Connector details: Screw terminals operational: -10°C to +60°C Temperature range storage: -20°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 191 of 500 11.4.2.12. 12V (Single) Relay Board (80-008901) The General Purpose Relay Board allows the inversion of signals and the isolation of circuits. It is equipped with a single dual pole change-over relay RL1, with completely isolated wiring, accessed via a 15 way in-line connector. The relay is provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. It’s common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. 80-008901 Specification PARAMETER SPECIFICATION Operating voltage 8 to 30V (floating earth) Alarm threshold Vcc - 1.20 volt +15% Alarm output relay contacts: Max. switch current 1.0Amp Max. switch volts 120Vdc/60VA Max. switch power 24W/60VA Min. switch load 10.0µA/10.0mV Relay isolation 1.5kV Mechanical life >2x107 operations Relay approval BT type 56 Connector details Screw terminals operational -10°C to +60°C Temperature range storage -20°C to +70°C 11.4.2.13. Dual Diode Assembly (94-100004) The purpose of these dual diode assemblies is to allow two DC voltage sources to be combined, so that the main DC rail within the equipment can be sourced from either a mains driven PSU, or externally through an XLR connector or from dual mains driven PSUs. They are very heavy-duty diodes and they prevent any reverse current from flowing back to their source or the alternative supply rail. Combining diodes such as these will also be used if the equipment is to be powered from external back-up batteries.
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 192 of 500 11.4.2.14. DC/DC Converter 96-200047 96-200047 is an O.E.M. high power device with a wide input range and 12.5 amp @ 12V (150Watts) output capability used to derive a 12V fixed voltage power supply rail from a higher voltage supply, in this case 12V. In the event of failure this unit should not be repaired, only replaced. 96-200047 Specification PARAMETER SPECIFICATION DC Input Voltage range 19 to 36V DC Output voltage 12V ± 1% Max. current load 12.5Amps Operation -10°C to +60°C Temperature range Storage -20°C to +85°C Working Humidity 20 to 90% RHNC 11.4.2.15. 12V Switch-Mode PSU (96-300052) No routine maintenance of the PSU is required. If a fault is suspected, then the output voltage from the power supply may be measured on its output terminals. This is typically set to 12.2V. The adjustment potentiometer will be found close to the DC output terminals. All the PSUs used in AFL Cell Enhancers are capable of operation from either 110 or 220V nominal AC supplies. The line voltage is sensed automatically, so no adjustment or link setting is needed by the operator. 96-300052 Specification AC Input Supply 110 or 220V nominal Voltage 85 - 265V AC (absolute limits) Frequency 47 to 63Hz DC Output Supply 12V DC (nominal) Voltage 10.5-13.8V (absolute limits) Current 12.5A
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 193 of 500 11.4.3. 700MHz FO Hub Amplifier (55-165602) 700MHz FO Hub Amplifier (55-165602) List of major components Section Component Part Component Part Description Qty. Per Assembly 11.4.3.3. 02-007206 900MHZ 8POLE 25MHz+ B/W "SMA" 2 11.4.3.4. 07-015105 ASYMMETRIC CPLR 30dB 800-2500MHz GA 2 11.4.3.5. 10-000701 SW ATT 0-30dB 0.25W SMA F 2 11.4.3.6. 11-005902 900MHz LOW NOISE AMP WITH RELAY KIT 1 11.4.3.7. 11-006702 800-1000MHz LNA 29dB (cw RELAY) KIT 2 11.4.3.8. 12-018002 PA 800-960MHz 20W CLASS A KIT 1 11.4.3.9. 12-021901 Low Power Amplifier 2 17-001109 AGC Detector Assembly (Logarithmic) 1 17-001117 AGC Detector Assembly 1 11.4.3.10. 17-001201 AGC Attenuator Assembly 2 11.4.3.11. 20-001601 12V RELAY BOARD 1 11.4.3.12. 80-008901 12V RELAY PCB ASSEMBLY 1 11.4.3.13. 94-100004 STPS12045TV 60A DUAL DIODE 1 11.4.3.14. 96-200047 DC/DC Converter 11.4.3.15. 96-300052 JWS150-12/A PSU (COUTANT LAMBDA) 1 *The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control (AGC) system used in 700MHz FO Hub Amplifier (55-165602); 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 194 of 500 11.4.3.1. 700MHz FO Hub Amplifier (55-165602) outline drawing drawing number 55-1656102
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 195 of 500 11.4.3.2. 700MHz FO Hub Amplifier (55-165602) system diagram drawing number 55-165682
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 196 of 500 11.4.3.3. Bandpass Filter (02-007206) The bandpass filters are multi-section designs with a bandwidth dependent upon the passband frequencies, (both tuned to customer requirements). The response shape is basically Chebyshev with a passband design ripple of 0.1dB. The filters are of slot coupled, folded combline design, and are carefully aligned during manufacture in order to optimise the insertion loss, VSWR and intermodulation characteristics of the unit. The tuned elements are silver-plated to reduce surface ohmic losses and maintain a good VSWR figure and 50Ω load at the input and output ports. Being passive devices, the bandpass filters should have an extremely long operational life and require no maintenance. Should a filter be suspect, it is usually most time efficient to replace the module rather than attempt repair or re-tuning. No adjustments should be attempted without full network sweep analysis facilities to monitor both insertion loss and VSWR simultaneously. 02-007206 Specification PARAMETER SPECIFICATION Response type Chebyshev Frequency range 800 - 950MHz * Bandwidth 25MHz * Number of sections 8 Insertion loss 1.2 dB VSWR better than 1.2:1 Connectors SMA female Power handling 100W max operation -20°C to +60°C Temperature range storage -40°C to +70°C Weight 3 kg (typical) *tuned to Customer's specification 11.4.3.4. Wideband Asymmetric Coupler (07-015105) The purpose of Wideband Asymmetric Coupler (07-015105) is to tap off a known portion (in this case 30dB) of RF signal from transmission lines and to combine them, for example through splitter units for different purposes (alarms/monitoring etc.), whilst maintaining an accurate 50Ω load to all ports/interfaces throughout the specified frequency range. They are known formally as directional couplers as they couple power from the RF mainline in one direction only. 07-015105 Specification PARAMETER SPECIFICATION Construction Inductive air gap Frequency 800-2500MHz Through loss 0.4dB (typical) Coupling leve: -30dB ±0.5dB Isolation N/A Weight <1.0kg Connectors SMA, female operation -20°C to +60°C Temperature range storage -40°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 197 of 500 11.4.3.5. Switched Attenuator 0.25Watt, 0 - 30dB (10-000701) In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive. Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the gain. Switched Attenuator 10-000701 provides attenuation from 0 to 30dB in 2 dB steps The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50Ω impedance over their operating frequency at both input and output. 10-000701 Specification PARAMETER SPECIFICATION Attenuation Values 0-30dB Attenuation Steps 2, 4, 8 and 16dB Power Handling 0.25 Watt Attenuation Accuracy ± 1.0 dB Frequency Range DC to 1GHz Impedance 50Ω Connectors SMA VSWR 1.3:1 Weight 0.2kg operation -20°C to +60°C Temperature range storage -40°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 198 of 500 11.4.3.6. Low Noise Amplifier (11-005902) The Gallium-Arsenide low noise amplifier used in the unit is a double stage, solid-state low noise amplifier. Class A circuitry is used throughout the units to ensure excellent linearity and extremely low noise over a very wide dynamic range. The active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely event of a failure, then the complete amplifier should be replaced. This amplifier features its own in-built alarm system which gives a volt-free relay contact type alarm that is easily integrated into any alarm system. There is a Current Fault Alarm Function, which indicates failure of each one or both RF transistors by a various alarm output options. The amplifier is housed in an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a 9way D-type for DC and alarm outputs. 11-005902 Specification PARAMETER SPECIFICATION Frequency range: 800 – 960MHz * Bandwidth: <170MHz Gain: 19.5dB (typical) 1dB compression point: 21dBm OIP3: 33dBm Input/output return loss: >20dB Noise figure: 1dB (typical) Power consumption: 190mA @ 24V DC Supply voltage: 10-24V DC Connectors: SMA female operational: -10°C to +60°C Temperature range storage: -40°C to +70°C Size: 90 x 55 x 30.2mm Weight: 0.28kg *tuned to Customer's specification LNA ‘D’ Connector Pin-out details Connector pin Signal 1 +Ve input (10-24V) 2 GND 3 Alarm relay O/P bad 4 Alarm relay common 5 Alarm relay good 6 No connection 7 TTL voltage set 8 TTL alarm/0V (good) 9 O/C good/0V bad
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 199 of 500 7 8 961 2 3 4 59-Way Pin-Out Graphical Representation 11.4.3.7. Low Noise Amplifier (11-006702) The Gallium-Arsenide low noise amplifiers used in 800MHz Line Amplifier (55-165703) are double stage, solid-state low noise amplifiers. Class A circuitry is used throughout the units to ensure excellent linearity and extremely low noise over a very wide dynamic range. The active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely event of a failure, then the complete amplifier should be replaced. This amplifier features its own in-built alarm system which gives a volt-free relay contact type alarm that is easily integrated into the main alarm system. 11-006702 Specification PARAMETER SPECIFICATION Frequency range: 800 – 1000MHz Bandwidth: <200MHz Gain: 29dB (typical) 1dB Compression point: 20dBm OIP3: 33dBm Input/Output return loss: >18dB Noise figure: 1.3dB (typical) Power consumption: 180mA @ 24V DC Supply voltage: 10-24V DC Connectors: SMA female operational: -10°C to +60°C Temperature range: storage: -20°C to +70°C Size: 90 x 55 x 30.2mm Weight: 290gms (approximately) Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details Connector pin Signal 1 +Ve input (10-24V) 2 GND 3 Alarm RelayO/P bad 4 Alarm Relay common 5 Alarm Relay good 6 No connection 7 TTL voltage set 8 TTL alarm/0V (good) 9 O/C good/0V bad
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 200 of 500 11.4.3.8. Power Amplifier (12-018002) This amplifier is a Class A 20W power amplifier from 800-960MHz in a 1 stage balanced configuration. It demonstrates a very high linearity and a very good input/output return loss (RL). It has built in a Current Fault Alarm Function. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. 12-018002 Specification PARAMETER SPECIFICATION Frequency range: 800-960MHz Small signal gain: 30dB Gain flatness: ±1.2dB I/O Return loss: >18dB 1dB compression point: 42.8dBm OIP3: 56dBm Supply voltage: 24V DC Supply current: 5.0Amps (Typical) operational: -10°C to +60°C Temperature range storage: -20°C to +70°C Weight: <2kg (no heatsink) Power Amplifier (12-018002) 7-Way Connector Pin-outs Connector Pin Signal A1 (large pin) +24V DC A2 (large pin) GND 1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL)
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 201 of 500 111.4.3.9. Low Power Amplifier (12-021901) The low power amplifier used is a triple stage solid-state low-noise amplifier. Class A circuitry is used in the unit to ensure excellent linearity over a very wide dynamic range. The three active devices are very moderately rated to provide a long trouble-free working life. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. There are no adjustments on this amplifier, and in the unlikely event of failure then the entire amplifier should be replaced. Low Power Amplifier (12-021901) Specification PARAMETER SPECIFICATION Frequency range 800-960MHz* Bandwidth 20MHz * Maximum RF output >1.0 Watt Gain 15dB 1dB compression point +30.5dBm 3rd order intercept point +43dBm Noise Figure <6dB VSWR better than 1.5:1 Connectors SMA female Supply 500mA @ 10-15V DC operational -10°C to +60°C Temperature range storage -20°C to +70°C Weight 0.5 kg Size 167x52x25mm * Tuned to Customer’s specification Low Power Amplifier (12-021901) 7-Way Connector Pin-outs Connector Pin Signal A1 (large pin) +24V DC A2 (large pin) GND 1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL)
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 202 of 500 11.4.3.10. Automatic Gain Control 17-001109 AGC Detector Assembly (Logarithmic) 17-001117 AGC Detector Assembly 17-001201 AGC Attenuator Assembly The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control (AGC) system used in 700MHz FO Hub Amplifier (55-165602); 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink 700MHz FO Hub Amplifier (55-165602) is fitted with two differing types of Automatic Gain Control (AGC) system, one linear, and one logarithmic. The AGC with logarithmic detector (17-001117) is fitted in the uplink path and the AGC with linear detector (17-001109) is fitted in the downlink path The AFL Automatic Gain Control system consists of two units, a detector/amplifier and an attenuator. The detector/amplifier unit is inserted in the RF path on the output of the power amplifier, and the attenuator is situated in the RF path between the 1st and 2nd stages of amplification. 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink The attenuator comprises a 50Ω P.I.N diode, voltage-variable attenuator with a range of 3 to 30dB. The attenuation is controlled by a DC voltage which is derived from the associated detector controller board. Normally the attenuator is at minimum attenuation. The detector/amplifier unit monitors the RF level being delivered by the power amplifier, and when a certain threshold is reached it begins to increase the value of the attenuator to limit the RF output to the (factory set) threshold. Therefore overloading of the power amplifier is avoided. The factory set threshold is 1dB below the Enhancer 1dB compression point. Some adjustment of this AGC threshold level is possible, a 10dB range is mostly achieved. It is not recommended under any circumstances to adjust the AGC threshold to a level greater than the 1dB compression point as system degradation will occur. The detector comprises of a 50Ω transmission line with a resistive tap which samples a small portion of the mainline power. The sampled signal is amplified and fed to a conventional half wave diode rectifier, the output of which is a DC voltage proportional to the RF input signal. This DC voltage is passed via an inverting DC amplifier with integrating characteristics, to the output, which drives the attenuation control line of the corresponding AGC attenuator. This unit is fitted at some earlier point in the RF circuit. For small signals, below AGC onset, the output control line will be close to 12V and the AGC attenuator will have minimum attenuation. As the signal level increases the control line voltage will fall, increasing the attenuator value and keeping the system output level at a constant value.
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 203 of 500 AGC Specification (both types) PARAMETER SPECIFICATION Frequency range up to 1000MHz Attenuation range 3 to 30dB Attenuation steps continuously variable VSWR better than 1.2:1 RF Connectors SMA female attenuator 1W Power handling detector/amp >30W (or as required) operation -10°C to +60°C Temperature range storage -20°C to +70°C attenuator pcb 50 x 42 x 21mm Size detector/amp pcb 54 x 42 x 21mm attenuator 90grams Weight detector/amp 100grams 11.4.3.11. 12V (Dual) Relay Board (20-001601) The General Purpose Relay Board allows the inversion of signals and the isolation of circuits. It is equipped with two dual pole change-over relays with completely isolated wiring, accessed via screw terminals. Both relays are provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. It’s common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. 20-001601 Specification PARAMETER SPECIFICATION Operating voltage: 8 to 30V (floating earth) Alarm threshold: Vcc - 1.20 volt +15% Alarm output relay contacts: Max. switch current: 1.0Amp Max. switch volts: 120Vdc/60VA Max. switch power: 24W/60VA Min. switch load: 10.0µA/10.0mV Relay isolation: 1.5kV Mechanical life: >2x107 operations Relay approval: BT type 56 Connector details: Screw terminals operational: -10°C to +60°C Temperature range storage: -20°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 204 of 500 11.4.3.12. 12V (Single) Relay Board (80-008901) The General Purpose Relay Board allows the inversion of signals and the isolation of circuits. It is equipped with a single dual pole change-over relay RL1, with completely isolated wiring, accessed via a 15 way in-line connector. The relay is provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. It’s common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. 80-008901 Specification PARAMETER SPECIFICATION Operating voltage 8 to 30V (floating earth) Alarm threshold Vcc - 1.20 volt +15% Alarm output relay contacts: Max. switch current 1.0Amp Max. switch volts 120Vdc/60VA Max. switch power 24W/60VA Min. switch load 10.0µA/10.0mV Relay isolation 1.5kV Mechanical life >2x107 operations Relay approval BT type 56 Connector details Screw terminals operational -10°C to +60°C Temperature range storage -20°C to +70°C 11.4.3.13. Dual Diode Assembly (94-100004) The purpose of these dual diode assemblies is to allow two DC voltage sources to be combined, so that the main DC rail within the equipment can be sourced from either a mains driven PSU, or externally through an XLR connector or from dual mains driven PSUs. They are very heavy-duty diodes and they prevent any reverse current from flowing back to their source or the alternative supply rail. Combining diodes such as these will also be used if the equipment is to be powered from external back-up batteries.
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 205 of 500 11.4.3.14. DC/DC Converter 96-200047 96-200047 is an O.E.M. high power device with a wide input range and 12.5 amp @ 12V (150Watts) output capability used to derive a 12V fixed voltage power supply rail from a higher voltage supply, in this case 12V. In the event of failure this unit should not be repaired, only replaced. 96-200047 Specification PARAMETER SPECIFICATION DC Input Voltage range 19 to 36V DC Output voltage 12V ± 1% Max. current load 12.5Amps Operation -10°C to +60°C Temperature range Storage -20°C to +85°C Working Humidity 20 to 90% RHNC 11.4.3.15. 12V Switch-Mode PSU (96-300052) No routine maintenance of the PSU is required. If a fault is suspected, then the output voltage from the power supply may be measured on its output terminals. This is typically set to 12.2V. The adjustment potentiometer will be found close to the DC output terminals. All the PSUs used in AFL Cell Enhancers are capable of operation from either 110 or 220V nominal AC supplies. The line voltage is sensed automatically, so no adjustment or link setting is needed by the operator. 96-300052 Specification AC Input Supply 110 or 220V nominal Voltage 85 - 265V AC (absolute limits) Frequency 47 to 63Hz DC Output Supply 12V DC (nominal) Voltage 10.5-13.8V (absolute limits) Current 12.5A
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 206 of 500 11.4.4. 700MHz FO HUB Splitter/Combiner (55-165603) 700MHz FO HUB Splitter/Combiner (55-165603) list of major components section Component Part Component Part Description Qty. Per Assembly 11.4.4.2. 05-003302 4 WAY SPLITTER GSM 900MHz 2 11.4.4.1. 700MHz FO HUB Splitter/Combiner (55-165603) system diagram drawing number 55-165683
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 207 of 500 11.4.4.2. Four Way Splitter/Combiner (05-003302) The Splitter/Combiner used is a device for accurately matching two or more RF signals to single or multiple ports, whilst maintaining an accurate 50Ω load to all inputs/outputs and ensuring that the VSWR and insertion losses are kept to a minimum. Any unused ports should be terminated with an appropriate 50Ω load. Four Way Splitter (05-003302) Specification PARAMETER SPECIFICATION Frequency range 700-980MHz Bandwidth 180MHz Rejection >14dB Insertion loss <7.0dB (in band) Connectors N type, female Weight <1.5kg operational -20%C to +60%C Temperature range storage -40%C to +70%C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 208 of 500 UNIVERSITY STATION. SPLITTER 220/09/0755-1657112PB18/10/2007GD18/10/20071:2OUTLINE DRAWINGPL100.00150.00420.00483463.065 5x FIXING HOLES SUITABLEFOR M5 FIXINGS180.0PORT JA2PORT JA1PORT JB3PORT JB2PORT JB1PORT I1 PORT I23.00PRODUCT NUMBER : 55-165712MATERIAL: CHASSIS - ALUMINIUMFINISH : IRIDITECONNECTORS : 'N' TYPE SOCKETS83.010.0AA ORIGINAL ISSUE PL 11.4.5. UNIVERSITY ST. SPLITTER 2 (55-165712) UNIVERSITY ST. SPLITTER 2 (55-165712) List of major Components section Component Parts Component Part Description Qty. Per Assembly11.4.5.3. 07-015102 ASYMMETRIC CPLR 10dB 800-2500MHz GA 3 11.4.5.1. University Station Splitter 2 (55-165712) outline drawing drawing number 55-1657112
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 209 of 500 11.4.5.2. University Station Splitter 2 (55-165712) system diagram drawing number 55-165792 11.4.5.3. Wideband Asymmetric Coupler (07-015102) The purpose of Wideband Asymmetric Coupler (07-015102) is to tap off a known portion (in this case 10dB) of RF signal from transmission lines and to combine them, for example through splitter units for different purposes (alarms/monitoring etc.), whilst maintaining an accurate 50Ω load to all ports/interfaces throughout the specified frequency range. They are known formally as directional couplers as they couple power from the RF mainline in one direction only. 07-015102 Specification PARAMETER SPECIFICATION Frequency Range 800 - 2500 MHz Coupling Value 10 dB ± 1.0 dB Main Line Insertion Loss <1.6 dB VSWR 1.4:1 Directivity >18 dB Power Rating 200 Watts RF Connectors ‘N’ female operation -20°C to +60°C Temperature range storage -40°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 210 of 500 11.4.6. Optical AB Switch FC/APC (98-700002) Optical A/B Switch FC/APC (98-700002) an O.E.M. sourced Fibre Optic relay supplied as a 1U rack mount tray. 98-700002 allows for the automatic switching between two optical inputs to provide a common optical output. Manual selection of the input is also possible via toggle switches on the front panel. 98-700002 Specification PARAMETER SPECIFICATION Electrical Characteristics Power Supply Voltage 100 - 240 VAC Power Supply Frequency 50 - 60 Hz Optical Characteristics Operating Wavelength 1200 – 1610nm Optical Input Range +20 dBm Optical Insertion Loss 2.0 dB Optical Trip Threshold/Meter Range -35 - +20 dBm Optical Switch Speed 15ms Backreflection Tolerance -50dB Environmental and Physical Characteristics Optical Connectors FC/APC Operating Temp. Range +10 to +40°C Storage Temp. Range -40 to +80 °C Humidity 5 to 90 % RHNC Weight 2.2 kg (6 lbs) Dimensions 483 x 361 x 44mm (19.0 x 14.2 x 1.72 in.) 11.4.7. F/O Link Subsystem (98-800001) F/O Link Subsystem (98-800001) is an O.E.M. sourced Optical Tranceiver package containing discreet TX and RX modules and supplied as a 1U rack mount tray Parameter Specification Optical Output Power 4 mW Wavelength, peak 1310 1550 nm Frequency Response, 50 to 2.2 GHz ± 1.5 dB Input and Output VSWR 1.5:1 Link Gain (2) 0 dB Output Noise Floor (1) -137 dBm/Hz Input 3rd Order Intercept (1) 30 dBm Operating Temperature −30 to +75°C Storage Temperature −40 to +85°C Maximum RF Input to Transmitter +20 dBm Maximum Optical Input to Receiver 6 mW A.C. Supply Voltage 90 – 265 VAC Dimensions 483 x 457 x 44mm (19.0 x 18 x 1.72 in.) (1) SFDR, Noise and IP3 specified with 5 dB optical loss. (2) Link Gain specified with 1 meter fiber.
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 211 of 500 12. WESTLAKE STATION LINE AMPLIFIER (80-330553) rack number C03-CR-06 Westlake Station Line Amplifier (80-330553) list of major components Section Component Part Component Part Description Qty. Per Assembly 12.4.1. 55-165703 800MHz LINE AMP + FILTERS (INT AMP) 2 12.4.2. 55-165704 700MHz LINE AMP + FILTERS (INT AMP) 2 12.4.3. 55-165707 WESTLAKE ST. SPLITTER 1
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 212 of 500 12.1. Westlake Station Line Amplifier (80-330553) rack elevation drawing number 80-330553
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 213 of 500 12.2. Westlake Station Line Amplifier (80-330553) system diagram drawing number 80-330583
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 214 of 500 12.3. Westlake Station Line Amplifier (80-330553) alarm wiring diagram drawing number 80-330523
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 215 of 500 12.4. Westlake Station Line Amplifier (80-330553) Sub Components 12.4.1. 800MHz Line Amplifier (55-165703) 800MHz Line Amplifier (55-165703) List of Major Components Section Component Part Component Part Description Qty. Per Assembly 12.4.1.3. 02-007206 Bandpass Filter 4 12.4.1.4. 07-015105 Wideband Asymmetric Coupler 1 12.4.1.5. 10-000901 Switched Attenuator 0.25W, 0 - 15dB 2 12.4.1.6. 11-006702 Low Noise Amplifier 1 12.4.1.7. 12-018002 Power Amplifier (20W 800MHz ) 1 12.4.1.8. 12-021901 Low Power Amplifier 2 17-001109* AGC Detector Assembly (Logarithmic) 1 17-001117* AGC Detector Assembly 1 12.4.1.9. 17-001201* AGC Attenuator Assembly 2 12.4.1.10. 20-001601 12V (Dual) Relay Board 1 12.4.1.11. 80-008901 12V (Single) Relay Board 1 12.4.1.12. 94-100004 Dual Diode Assembly 1 12.4.1.13. 96-200047 DC/DC Converter 1 12.4.1.14. 96-300052 12V Switch-Mode PSU 1 *The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control (AGC) system used in 800MHz Line Amplifier (55-165703); 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 216 of 500 12.4.1.1. 800MHz Line Amplifier (55-165703) Outline Drawing Drawing number 55-1657103
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 217 of 500 12.4.1.2. 800MHz Line Amplifier (55-165703) System Diagram Drawing number 55-165783
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 218 of 500 12.4.1.3. Bandpass Filter (02-007206) The bandpass filters are multi-section designs with a bandwidth dependent upon the passband frequencies, (both tuned to customer requirements). The response shape is basically Chebyshev with a passband design ripple of 0.1dB. The filters are of slot coupled, folded combline design, and are carefully aligned during manufacture in order to optimise the insertion loss, VSWR and intermodulation characteristics of the unit. The tuned elements are silver-plated to reduce surface ohmic losses and maintain a good VSWR figure and 50Ω load at the input and output ports. Being passive devices, the bandpass filters should have an extremely long operational life and require no maintenance. Should a filter be suspect, it is usually most time efficient to replace the module rather than attempt repair or re-tuning. No adjustments should be attempted without full network sweep analysis facilities to monitor both insertion loss and VSWR simultaneously. 02-007206 Specification PARAMETER SPECIFICATION Response type Chebyshev Frequency range 800 - 950MHz * Bandwidth 25MHz * Number of sections 8 Insertion loss 1.2 dB VSWR better than 1.2:1 Connectors SMA female Power handling 100W max operation -20°C to +60°C Temperature range storage -40°C to +70°C Weight 3 kg (typical) *tuned to Customer's specification 12.4.1.4. Wideband Asymmetric Coupler (07-015105) The purpose of Wideband Asymmetric Coupler (07-015105) is to tap off a known portion (in this case 30dB) of RF signal from transmission lines and to combine them, for example through splitter units for different purposes (alarms/monitoring etc.), whilst maintaining an accurate 50Ω load to all ports/interfaces throughout the specified frequency range. They are known formally as directional couplers as they couple power from the RF mainline in one direction only. 07-015105 Specification PARAMETER SPECIFICATION Construction Inductive air gap Frequency 800-2500MHz Through loss 0.4dB (typical) Coupling level -30dB ±0.5dB Isolation N/A Weight <1.0kg Connectors SMA, female operation -20°C to +60°C Temperature range storage -40°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 219 of 500 12.4.1.5. Switched Attenuator 0.25W, 0 - 15dB (10-000901) In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive. Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the gain. 10-000901 provides attenuation from 0 - 15dB in 2 dB steps The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50Ω impedance over their operating frequency at both input and output. 10-000901 Specification PARAMETER SPECIFICATION Attenuation Values 0-15dB Attenuation Steps 1, 2, 4 and 8dB Power Handling 0.25 Watt Attenuation Accuracy ± 1.0 dB Frequency Range DC to 1GHz Impedance 50Ω Connectors SMA VSWR 1.3:1 Weigh 0.2kg operation -20°C to +60°C Temperature range storage -40°C to +70°C 12.4.1.6. Low Noise Amplifier (11-006702) The Gallium-Arsenide low noise amplifiers used in 800MHz Line Amplifier (55-165703) are double stage, solid-state low noise amplifiers. Class A circuitry is used throughout the units to ensure excellent linearity and extremely low noise over a very wide dynamic range. The active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely event of a failure, then the complete amplifier should be replaced. This amplifier features its own in-built alarm system which gives a volt-free relay contact type alarm that is easily integrated into the main alarm system. 11-006702 Specification PARAMETER SPECIFICATION Frequency range: 800 – 1000MHz Bandwidth: <200MHz Gain: 29dB (typical) 1dB Compression point: 20dBm OIP3: 33dBm Input/Output return loss: >18dB Noise figure: 1.3dB (typical) Power consumption: 180mA @ 24V DC Supply voltage: 10-24V DC Connectors: SMA female operational: -10°C to +60°C Temperature range: storage: -20°C to +70°C Size: 90 x 55 x 30.2mm Weight: 290gms (approximately)
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 220 of 500 7 8 961 2 3 4 59-Way Pin-Out Graphical Representation Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details Connector pin Signal 1 +Ve input (10-24V) 2 GND 3 Alarm RelayO/P bad 4 Alarm Relay common 5 Alarm Relay good 6 No connection 7 TTL voltage set 8 TTL alarm/0V (good) 9 O/C good/0V bad 12.4.1.7. Power Amplifier (12-018002) This amplifier is a Class A 20W power amplifier from 800-960MHz in a 1 stage balanced configuration. It demonstrates a very high linearity and a very good input/output return loss (RL). It has built in a Current Fault Alarm Function. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. 12-018002 Specification PARAMETER SPECIFICATION Frequency range: 800-960MHz Small signal gain: 30dB Gain flatness: ±1.2dB I/O Return loss: >18dB 1dB compression point: 42.8dBm OIP3: 56dBm Supply voltage: 24V DC Supply current: 5.0Amps (Typical) operational: -10°C to +60°C Temperature range storage: -20°C to +70°C Weight: <2kg (no heatsink)
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 221 of 500 Power Amplifier (12-018002) 7-Way Connector Pin-outs Connector Pin Signal A1 (large pin) +24V DC A2 (large pin) GND 1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL) 12.4.1.8. Low Power Amplifier (12-021901) The low power amplifier used is a triple stage solid-state low-noise amplifier. Class A circuitry is used in the unit to ensure excellent linearity over a very wide dynamic range. The three active devices are very moderately rated to provide a long trouble-free working life. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. There are no adjustments on this amplifier, and in the unlikely event of failure then the entire amplifier should be replaced. Low Power Amplifier (12-021901) Specification PARAMETER SPECIFICATION Frequency range 800-960MHz* Bandwidth 20MHz * Maximum RF output >1.0 Watt Gain 15dB 1dB compression point +30.5dBm 3rd order intercept point +43dBm Noise Figure <6dB VSWR better than 1.5:1 Connectors SMA female Supply 500mA @ 10-15V DC operational -10°C to +60°C Temperature range storage -20°C to +70°C Weight 0.5 kg Size 167x52x25mm * Tuned to Customer’s specification
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 222 of 500 Low Power Amplifier (12-021901) 7-Way Connector Pin-outs Connector Pin Signal A1 (large pin) +24V DC A2 (large pin) GND 1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL) 12.4.1.9. Automatic Gain Control 17-001109 AGC Detector Assembly (Logarithmic) 17-001117 AGC Detector Assembly 17-001201 AGC Attenuator Assembly The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control (AGC) system used in 800MHz Line Amplifier (55-165703); 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink 800MHz Line Amplifier (55-165703) is fitted with two differing types of Automatic Gain Control (AGC) system, one linear, and one logarithmic. The AGC with logarithmic detector (17-001117) is fitted in the uplink path and the AGC with linear detector (17-001109) is fitted in the downlink path The AFL Automatic Gain Control system consists of two units, a detector/amplifier and an attenuator. The detector/amplifier unit is inserted in the RF path on the output of the power amplifier, and the attenuator is situated in the RF path between the 1st and 2nd stages of amplification. 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink The attenuator comprises a 50Ω P.I.N diode, voltage-variable attenuator with a range of 3 to 30dB. The attenuation is controlled by a DC voltage which is derived from the associated detector controller board. Normally the attenuator is at minimum attenuation. The detector/amplifier unit monitors the RF level being delivered by the power amplifier, and when a certain threshold is reached it begins to increase the value of the attenuator to limit the RF output to the (factory set) threshold. Therefore overloading of the power amplifier is avoided. The factory set threshold is 1dB below the Enhancer 1dB compression point. Some adjustment of this AGC threshold level is possible, a 10dB range is mostly achieved. It is not recommended under any circumstances to adjust the AGC threshold to a level greater than the 1dB compression point as system degradation will occur.
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 223 of 500 The detector comprises of a 50Ω transmission line with a resistive tap which samples a small portion of the mainline power. The sampled signal is amplified and fed to a conventional half wave diode rectifier, the output of which is a DC voltage proportional to the RF input signal. This DC voltage is passed via an inverting DC amplifier with integrating characteristics, to the output, which drives the attenuation control line of the corresponding AGC attenuator. This unit is fitted at some earlier point in the RF circuit. For small signals, below AGC onset, the output control line will be close to 12V and the AGC attenuator will have minimum attenuation. As the signal level increases the control line voltage will fall, increasing the attenuator value and keeping the system output level at a constant value. AGC Specification (both types) PARAMETER SPECIFICATION Frequency range up to 1000MHz Attenuation range 3 to 30dB Attenuation steps continuously variable VSWR better than 1.2:1 RF Connectors SMA female attenuator 1W Power handling detector/amp >30W (or as required) operation -10°C to +60°C Temperature range storage -20°C to +70°C attenuator pcb 50 x 42 x 21mm Size detector/amp pcb 54 x 42 x 21mm attenuator 90grams Weight detector/amp 100grams 12.4.1.10. 12V (Dual) Relay Board (20-001601) The General Purpose Relay Board allows the inversion of signals and the isolation of circuits. It is equipped with two dual pole change-over relays with completely isolated wiring, accessed via screw terminals. Both relays are provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. It’s common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. 20-001601 Specification PARAMETER SPECIFICATION Operating voltage: 8 to 30V (floating earth) Alarm threshold: Vcc - 1.20 volt +15% Alarm output relay contacts: Max. switch current: 1.0Amp Max. switch volts: 120Vdc/60VA Max. switch power: 24W/60VA Min. switch load: 10.0µA/10.0mV Relay isolation: 1.5kV Mechanical life: >2x107 operations Relay approval: BT type 56 Connector details: Screw terminals operational: -10°C to +60°C Temperature range storage: -20°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 224 of 500 12.4.1.11. 12V (Single) Relay Board (80-008901) The General Purpose Relay Board allows the inversion of signals and the isolation of circuits. It is equipped with a single dual pole change-over relay RL1, with completely isolated wiring, accessed via a 15 way in-line connector. The relay is provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. It’s common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. 80-008901 Specification PARAMETER SPECIFICATION Operating voltage 8 to 30V (floating earth) Alarm threshold Vcc - 1.20 volt +15% Alarm output relay contacts: Max. switch current 1.0Amp Max. switch volts 120Vdc/60VA Max. switch power 24W/60VA Min. switch load 10.0µA/10.0mV Relay isolation 1.5kV Mechanical life >2x107 operations Relay approval BT type 56 Connector details Screw terminals operational -10°C to +60°C Temperature range storage -20°C to +70°C 12.4.1.12. Dual Diode Assembly (94-100004) The purpose of these dual diode assemblies is to allow two DC voltage sources to be combined, so that the main DC rail within the equipment can be sourced from either a mains driven PSU, or externally through an XLR connector or from dual mains driven PSUs . They are very heavy-duty diodes and they prevent any reverse current from flowing back to their source or the alternative supply rail. Combining diodes such as these will also be used if the equipment is to be powered from external back-up batteries.
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 225 of 500 12.4.1.13. DC/DC Converter 96-200047 96-200047 is an O.E.M. high power device with a wide input range and 12.5 amp @ 12V (150Watts) output capability used to derive a 12V fixed voltage power supply rail from a higher voltage supply, in this case 12V. In the event of failure this unit should not be repaired, only replaced. PARAMETER SPECIFICATION DC Input Voltage range 19 to 36V DC Output voltage 12V ± 1% Max. current load 12.5Amps Operation -10°C to +60°C Temperature range Storage -20°C to +85°C Working Humidity 20 to 90% RHNC 12.4.1.14. 12V Switch-Mode PSU (96-300052) No routine maintenance of the PSU is required. If a fault is suspected, then the output voltage from the power supply may be measured on its output terminals. This is typically set to 12.2V. The adjustment potentiometer will be found close to the DC output terminals. All the PSUs used in AFL Cell Enhancers are capable of operation from either 110 or 220V nominal AC supplies. The line voltage is sensed automatically, so no adjustment or link setting is needed by the operator. 96-300052 Specification AC Input Supply 110 or 220V nominal Voltage 85 - 265V AC (absolute limits) Frequency 47 to 63Hz DC Output Supply 12V DC (nominal) Voltage 10.5-13.8V (absolute limits) Current 12.5A
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 226 of 500 12.4.2 700MHz Line Amplifier (55-165704) Description of 700MHz Line Amplifier (55-165704) 700MHz Line Amplifier (55-165704) List of Major Components Section Component Part Component Part Description Qty. Per Assembly 12.4.2.3. 02-007206 Bandpass Filter 4 12.4.2.4. 07-015105 Wideband Asymmetric Coupler 1 12.4.2.5. 10-000901 Switched Attenuator 0.25W, 0 - 15dB 2 12.4.2.6. 11-006702 Low Noise Amplifier 1 12.4.2.7. 12-018002 Power Amplifier (20W 800MHz ) 1 12.4.2.8. 12-021901 Low Power Amplifier 2 17-001109* AGC Detector Assembly (Logarithmic) 1 17-001117* AGC Detector Assembly 1 12.4.2.9. 17-001201* AGC Attenuator Assembly 2 12.4.2.10. 80-008901 12V (Single) Relay Board 1 12.4.2.11. 94-100004 Dual Diode Assembly 1 12.4.2.12. 96-200047 DC/DC Converter 1 12.4.2.13. 96-300052 12V Switch-Mode PSU 1 *The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control (AGC) system used in 800MHz Line Amplifier (55-165703); 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 227 of 500 12.4.2.1. 700MHz Line Amplifier (55-165704) Outline Drawing Drawing number 55-1657104
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 228 of 500 12.4.2.2. 700MHz Line Amplifier (55-165704) System Diagram Drawing number 55-165784
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 229 of 500 12.4.2.3. Bandpass Filter (02-007206) The bandpass filters are multi-section designs with a bandwidth dependent upon the passband frequencies, (both tuned to customer requirements). The response shape is basically Chebyshev with a passband design ripple of 0.1dB. The filters are of slot coupled, folded combline design, and are carefully aligned during manufacture in order to optimise the insertion loss, VSWR and intermodulation characteristics of the unit. The tuned elements are silver-plated to reduce surface ohmic losses and maintain a good VSWR figure and 50Ω load at the input and output ports. Being passive devices, the bandpass filters should have an extremely long operational life and require no maintenance. Should a filter be suspect, it is usually most time efficient to replace the module rather than attempt repair or re-tuning. No adjustments should be attempted without full network sweep analysis facilities to monitor both insertion loss and VSWR simultaneously. 02-007206 Specification PARAMETER SPECIFICATION Response type Chebyshev Frequency range 800 - 950MHz * Bandwidth 25MHz * Number of sections 8 Insertion loss 1.2 dB VSWR better than 1.2:1 Connectors SMA female Power handling 100W max operation -20°C to +60°C Temperature range storage -40°C to +70°C Weight 3 kg (typical) *tuned to Customer's specification 12.4.2.4. Wideband Asymmetric Coupler (07-015105) The purpose of Wideband Asymmetric Coupler (07-015105) is to tap off a known portion (in this case 30dB) of RF signal from transmission lines and to combine them, for example through splitter units for different purposes (alarms/monitoring etc.), whilst maintaining an accurate 50Ω load to all ports/interfaces throughout the specified frequency range. They are known formally as directional couplers as they couple power from the RF mainline in one direction only. 07-015105 Specification PARAMETER SPECIFICATION Construction Inductive air gap Frequency 800-2500MHz Through loss 0.4dB (typical) Coupling level -30dB ±0.5dB Isolation N/A Weight <1.0kg Connectors SMA, female operation -20°C to +60°C Temperature range storage -40°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 230 of 500 12.4.2.5. Switched Attenuator 0.25W, 0 - 15dB (10-000901) In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive. Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the gain. 10-000901 provides attenuation from 0 - 15dB in 2 dB steps The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50Ω impedance over their operating frequency at both input and output. 10-000901 Specification PARAMETER SPECIFICATION Attenuation Values 0-15dB Attenuation Steps 1, 2, 4 and 8dB Power Handling 0.25 Watt Attenuation Accuracy ± 1.0 dB Frequency Range DC to 1GHz Impedance 50Ω Connectors SMA VSWR 1.3:1 Weigh 0.2kg operation -20°C to +60°C Temperature range storage -40°C to +70°C 12.4.2.6. Low Noise Amplifier (11-006702) The Gallium-Arsenide low noise amplifiers used in 700MHz Line Amplifier (55-165704) are double stage, solid-state low noise amplifiers. Class A circuitry is used throughout the units to ensure excellent linearity and extremely low noise over a very wide dynamic range. The active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely event of a failure, then the complete amplifier should be replaced. This amplifier features its own in-built alarm system which gives a volt-free relay contact type alarm that is easily integrated into the main alarm system. 11-006702 Specification PARAMETER SPECIFICATION Frequency range: 800 – 1000MHz Bandwidth: <200MHz Gain: 29dB (typical) 1dB Compression point: 20dBm OIP3: 33dBm Input/Output return loss: >18dB Noise figure: 1.3dB (typical) Power consumption: 180mA @ 24V DC Supply voltage: 10-24V DC Connectors: SMA female operational: -10°C to +60°C Temperature range: storage: -20°C to +70°C Size: 90 x 55 x 30.2mm Weight: 290gms (approximately)
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 231 of 500 7 8 961 2 3 4 59-Way Pin-Out Graphical Representation Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details Connector pin Signal 1 +Ve input (10-24V) 2 GND 3 Alarm RelayO/P bad 4 Alarm Relay common 5 Alarm Relay good 6 No connection 7 TTL voltage set 8 TTL alarm/0V (good) 9 O/C good/0V bad 12.4.2.7. Power Amplifier (12-018002) This amplifier is a Class A 20W power amplifier from 800-960MHz in a 1 stage balanced configuration. It demonstrates a very high linearity and a very good input/output return loss (RL). It has built in a Current Fault Alarm Function. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. Technical Specification PARAMETER SPECIFICATION Frequency range: 800-960MHz Small signal gain: 30dB Gain flatness: ±1.2dB I/O Return loss: >18dB 1dB compression point: 42.8dBm OIP3: 56dBm Supply voltage: 24V DC Supply current: 5.0Amps (Typical) operational: -10°C to +60°C Temperature range storage: -20°C to +70°C Weight: <2kg (no heatsink)
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 232 of 500 Power Amplifier (12-018002) 7-Way Connector Pin-outs Connector Pin Signal A1 (large pin) +24V DC A2 (large pin) GND 1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL) 12.4.2.8. Low Power Amplifier (12-021901) The low power amplifier used is a triple stage solid-state low-noise amplifier. Class A circuitry is used in the unit to ensure excellent linearity over a very wide dynamic range. The three active devices are very moderately rated to provide a long trouble-free working life. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. There are no adjustments on this amplifier, and in the unlikely event of failure then the entire amplifier should be replaced. Low Power Amplifier (12-021901) Specification PARAMETER SPECIFICATION Frequency range 800-960MHz* Bandwidth 20MHz * Maximum RF output >1.0 Watt Gain 15dB 1dB compression point +30.5dBm 3rd order intercept point +43dBm Noise Figure <6dB VSWR better than 1.5:1 Connectors SMA female Supply 500mA @ 10-15V DC operational -10°C to +60°C Temperature range storage -20°C to +70°C Weight 0.5 kg Size 167x52x25mm * Tuned to Customer’s specification
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 233 of 500 Low Power Amplifier (12-021901) 7-Way Connector Pin-outs Connector Pin Signal A1 (large pin) +24V DC A2 (large pin) GND 1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL) 12.4.2.9. Automatic Gain Control 17-001109 AGC Detector Assembly (Logarithmic) 17-001117 AGC Detector Assembly 17-001201 AGC Attenuator Assembly The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control (AGC) system used in 700MHz Line Amplifier (55-165704); 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink 700MHz Line Amplifier (55-165704) is fitted with two differing types of Automatic Gain Control (AGC) system, one linear, and one logarithmic. The AGC with logarithmic detector (17-001117) is fitted in the uplink path and the AGC with linear detector (17-001109) is fitted in the downlink path The AFL Automatic Gain Control system consists of two units, a detector/amplifier and an attenuator. The detector/amplifier unit is inserted in the RF path on the output of the power amplifier, and the attenuator is situated in the RF path between the 1st and 2nd stages of amplification. 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink The attenuator comprises a 50Ω P.I.N diode, voltage-variable attenuator with a range of 3 to 30dB. The attenuation is controlled by a DC voltage which is derived from the associated detector controller board. Normally the attenuator is at minimum attenuation. The detector/amplifier unit monitors the RF level being delivered by the power amplifier, and when a certain threshold is reached it begins to increase the value of the attenuator to limit the RF output to the (factory set) threshold. Therefore overloading of the power amplifier is avoided. The factory set threshold is 1dB below the Enhancer 1dB compression point. Some adjustment of this AGC threshold level is possible, a 10dB range is mostly achieved. It is not recommended under any circumstances to adjust the AGC threshold to a level greater than the 1dB compression point as system degradation will occur.
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 234 of 500 The detector comprises of a 50Ω transmission line with a resistive tap which samples a small portion of the mainline power. The sampled signal is amplified and fed to a conventional half wave diode rectifier, the output of which is a DC voltage proportional to the RF input signal. This DC voltage is passed via an inverting DC amplifier with integrating characteristics, to the output, which drives the attenuation control line of the corresponding AGC attenuator. This unit is fitted at some earlier point in the RF circuit. For small signals, below AGC onset, the output control line will be close to 12V and the AGC attenuator will have minimum attenuation. As the signal level increases the control line voltage will fall, increasing the attenuator value and keeping the system output level at a constant value. AGC Specification (both types) PARAMETER SPECIFICATION Frequency range up to 1000MHz Attenuation range 3 to 30dB Attenuation steps continuously variable VSWR better than 1.2:1 RF Connectors SMA female attenuator 1W Power handling detector/amp >30W (or as required) operation -10°C to +60°C Temperature range storage -20°C to +70°C attenuator pcb 50 x 42 x 21mm Size detector/amp pcb 54 x 42 x 21mm attenuator 90grams Weight detector/amp 100grams 12.4.2.10. 12V (Single) Relay Board (80-008901) The General Purpose Relay Board allows the inversion of signals and the isolation of circuits. It is equipped with a single dual pole change-over relay RL1, with completely isolated wiring, accessed via a 15 way in-line connector. The relay is provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. It’s common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. 80-008901 Specification PARAMETER SPECIFICATION Operating voltage 8 to 30V (floating earth) Alarm threshold Vcc - 1.20 volt +15% Alarm output relay contacts: Max. switch current 1.0Amp Max. switch volts 120Vdc/60VA Max. switch power 24W/60VA Min. switch load 10.0µA/10.0mV Relay isolation 1.5kV Mechanical life >2x107 operations Relay approval BT type 56 Connector details Screw terminals operational -10°C to +60°C Temperature range storage -20°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 235 of 500 12.4.2.11. Dual Diode Assembly (94-100004) The purpose of these dual diode assemblies is to allow two DC voltage sources to be combined, so that the main DC rail within the equipment can be sourced from either a mains driven PSU, or externally through an XLR connector or from dual mains driven PSUs . They are very heavy-duty diodes and they prevent any reverse current from flowing back to their source or the alternative supply rail. Combining diodes such as these will also be used if the equipment is to be powered from external back-up batteries. 12.4.2.12. DC/DC Converter 96-200047 96-200047 is an O.E.M. high power device with a wide input range and 12.5 amp @ 12V (150Watts) output capability used to derive a 12V fixed voltage power supply rail from a higher voltage supply, in this case 12V. In the event of failure this unit should not be repaired, only replaced. 96-200047 Specification PARAMETER SPECIFICATION DC Input Voltage range 19 to 36V DC Output voltage 12V ± 1% Max. current load 12.5Amps Operation -10°C to +60°C Temperature range Storage -20°C to +85°C Working Humidity 20 to 90% RHNC 12.4.2.13. 12V Switch-Mode PSU (96-300052) No routine maintenance of the PSU is required. If a fault is suspected, then the output voltage from the power supply may be measured on its output terminals. This is typically set to 12.2V. The adjustment potentiometer will be found close to the DC output terminals. All the PSUs used in AFL Cell Enhancers are capable of operation from either 110 or 220V nominal AC supplies. The line voltage is sensed automatically, so no adjustment or link setting is needed by the operator. 96-300052 Specification AC Input Supply 110 or 220V nominal Voltage 85 - 265V AC (absolute limits) Frequency 47 to 63Hz DC Output Supply 12V DC (nominal) Voltage 10.5-13.8V (absolute limits) Current 12.5A
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 236 of 500 12.4.3. Westlake Station. Splitter (55-165707) 2U rack mount chassis Westlake Station. Splitter (55-165707) list of major components Section Component Part Component Part Description Qty. Per Assembly 12.4.3.3. 07-015102 Wideband Asymmetric Coupler 5
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 237 of 500 12.4.3.1. Westlake Station. Splitter (55-165707) outline drawing Drawing number 55-1657107
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 238 of 500 12.4.3.2. Westlake Station. Splitter (55-165707) system diagram Drawing number 55-165787 12.4.3.3. Wideband Asymmetric Coupler (07-015102) The purpose of Wideband Asymmetric Coupler (07-015102) is to tap off a known portion (in this case 10dB) of RF signal from transmission lines and to combine them, for example through splitter units for different purposes (alarms/monitoring etc.), whilst maintaining an accurate 50Ω load to all ports/interfaces throughout the specified frequency range. They are known formally as directional couplers as they couple power from the RF mainline in one direction only. 07-015102 Specification PARAMETER SPECIFICATION Frequency Range 800 - 2500 MHz Coupling Value 10 dB ± 1.0 dB Main Line Insertion Loss <1.6 dB VSWR 1.4:1 Directivity >18 dB Power Rating 200 Watts RF Connectors ‘N’ female operation -20°C to +60°C Temperature range storage -40°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 239 of 500 13 ATTENUATOR SHELF (ITAC) 1 (55-165506) Attenuator Shelf (ITAC) 1 (55-165506) list of major components Section Component Part Component Part Description Qty. Per Assembly 13.3.1. 05-002602 900MHz Splitter/Combiner 1 13.3.2. 05-003007 4 Port Hybrid Coupler 1 13.3.3. 09-000902 Dummy load 1 13.3.4. 10-000901 Switched Attenuator 0.25W, 0 - 15dB 1 13.3.5. 10-002960 25W 2.5GHz 60dB ATTENUATOR N M/F 1
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 240 of 500 13.1. Attenuator Shelf (ITAC) 1 (55-165506) outline drawing Drawing number 55-1655106
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 241 of 500 13.2 Attenuator Shelf (ITAC) 1 (55-165506) system diagram Drawing number 55-165586
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 242 of 500 13.3. Attenuator Shelf (ITAC) 1 (55-165506) major components 13.3.1. 900MHz Splitter/Combiner (05-002602) The Splitter/Combiner used is a device for accurately matching two or more RF signals to single or multiple ports, whilst maintaining an accurate 50Ω load to all inputs/outputs and ensuring that the VSWR and insertion losses are kept to a minimum. Any unused ports should be terminated with an appropriate 50Ω load. Being passive devices, the splitters should have an extremely long operational life and require no maintenance. Should a unit be suspect, it is usually most time efficient to replace the whole module rather than attempt repair or re-tuning. 05-002602 Specification PARAMETER SPECIFICATION Narrowband 815 – 960MHz Frequency range Broadband 800 – 1200MHz Narrowband 145MHz Bandwidth Broadband 400MHz Input ports 1 Output ports 2 Narrowband 3.3dB Insertion loss Broadband 3.5dB Return loss input & output 1.3:1 Impedance 50Ω Narrowband >20dB Isolation Broadband >18dB MTFB >180,000 hours Splitting 20Watts Power rating Combining 0.5Watt Connectors SMA female Weight 200g (approximately) Size 54 x 44 x 21mm 13.3.2. 4 Port Hybrid Coupler (05-003007) This transmitter hybrid coupler is a device for accurately matching two or more RF signals to single or multiple ports, whilst maintaining an accurate 50Ω load to all inputs/outputs and ensuring that the insertion losses are kept to a minimum. Any unused ports should be terminated with an appropriate 50Ω load. In this specific instance one port of 4 Port Hybrid Coupler (05-003007) is terminated with Dummy load 09-000902 (see below). 05-003007 Specification PARAMETER SPECIFICATION Frequency range 700-900MHz Bandwidth 200MHz Rejection >14dB Insertion loss 6.5dB (in band, typical) Connectors SMA Weight <1.0kg operational -10%C to +60%C Temperature range storage -20%C to +70%C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 243 of 500 13.3.3. Dummy load (09-000902) When a combiner system is used to split or combine RF signals, in many cases it is most cost effective to use a standard stock item 4, 6 or 8 port device where, in fact, only a 3 or 6 port device is needed. In this case 4 Port Hybrid Coupler (05-003007) has one of its ports terminated with Dummy load (09-000902) in order to preserve the correct impedance of the device over the specified frequency range. 09-000902 specification PARAMETER SPECIFICATION Frequency Range 0 - 2500 MHz Power Rating 25 Watts continuous VSWR Better than 1.1:1 Impedance 50 Ohms Temperature Range -20 to +60°C RF Connectors N Type female Dimension 110.3mm x 38.1mm x Weight 485 grams Finish Black Anodised RF Connector N Type male Environmental IP66 MTBF >180,000 hours 13.3.4. Switched Attenuator 0.25W, 0 - 15dB (10-000901) In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive. Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the gain. 10-000901 provides attenuation from 0 - 15dB in 2 dB steps The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50Ω impedance over their operating frequency at both input and output. 10-000901 Specification PARAMETER SPECIFICATION Attenuation Values 0-15dB Attenuation Steps 1, 2, 4 and 8dB Power Handling 0.25 Watt Attenuation Accuracy ± 1.0 dB Frequency Range DC to 1GHz Impedance 50Ω Connectors SMA VSWR 1.3:1 Weight 0.2kg operation -20°C to +60°C Temperature range storage -40°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 244 of 500 13.3.5. Attenuator 25W, 60dB (10-002960) In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive. Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the gain. Attenuator 25W, 60dB (10-002960) is a fixed attenuator providing 60dB of signal attenuation. 10-002960 Specification PARAMETER SPECIFICATION Frequency Range DC to 2.5GHz Power Handling 25 W Attenuation 60 dB Attenuation Accuracy ± 0.5dB Return Loss to 2.2GHz 18dB Nominal Impedance 50 Ω RF Conectors N male to N female Finish Matt Black Anodise operational -20%C to +55%C Temperature range storage -20%C to +70%C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 245 of 500 14 ATTENUATOR SHELF (ITAC) 2 (55-165506) Attenuator Shelf (ITAC) 2 (55-165506) list of major components Section Component Part Component Part Description Qty. Per Assembly 13.3.1. 05-002602 900MHz Splitter/Combiner 1 13.3.2. 05-003007 4 Port Hybrid Coupler 1 13.3.3. 09-000902 Dummy load 1 13.3.4. 10-000901 Switched Attenuator 0.25W, 0 - 15dB 1 13.3.5. 10-002960 Attenuator 25W, 60dB 1
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 246 of 500 14.1. Attenuator Shelf (ITAC) 2 (55-165506) outline drawing Drawing number 55-1655106
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 247 of 500 14.2 Attenuator Shelf (ITAC) 2 (55-165506) system diagram Drawing number 55-165586
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 248 of 500 14.3. Attenuator Shelf (ITAC) 2 (55-165506) major components 14.3.1. 900MHz Splitter/Combiner (05-002602) The Splitter/Combiner used is a device for accurately matching two or more RF signals to single or multiple ports, whilst maintaining an accurate 50Ω load to all inputs/outputs and ensuring that the VSWR and insertion losses are kept to a minimum. Any unused ports should be terminated with an appropriate 50Ω load. Being passive devices, the splitters should have an extremely long operational life and require no maintenance. Should a unit be suspect, it is usually most time efficient to replace the whole module rather than attempt repair or re-tuning. 05-002602 Specification PARAMETER SPECIFICATION Narrowband 815 – 960MHz Frequency range Broadband 800 – 1200MHz Narrowband 145MHz Bandwidth Broadband 400MHz Input ports 1 Output ports 2 Narrowband 3.3dB Insertion loss Broadband 3.5dB Return loss input & output 1.3:1 Impedance 50Ω Narrowband >20dB Isolation Broadband >18dB MTFB >180,000 hours Splitting 20Watts Power rating Combining 0.5Watt Connectors SMA female Weight 200g (approximately) Size 54 x 44 x 21mm 14.3.2. 4 Port Hybrid Coupler (05-003007) This transmitter hybrid coupler is a device for accurately matching two or more RF signals to single or multiple ports, whilst maintaining an accurate 50Ω load to all inputs/outputs and ensuring that the insertion losses are kept to a minimum. Any unused ports should be terminated with an appropriate 50Ω load. In this specific instance one port of 4 Port Hybrid Coupler (05-003007) is terminated with Dummy load 09-000902 (see below). 05-003007 Specification PARAMETER SPECIFICATION Frequency range: 700-900MHz Bandwidth: 200MHz Rejection: >14dB Insertion loss: 6.5dB (in band, typical) Connectors: SMA Weight: <1.0kg operational:-10%C to +60%C Temperature range: storage -20%C to +70%C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 249 of 500 14.3.3. Dummy load 09-000902 When a combiner system is used to split or combine RF signals, in many cases it is most cost effective to use a standard stock item 4, 6 or 8 port device where, in fact, only a 3 or 6 port device is needed. In this case 4 Port Hybrid Coupler (05-003007) has one of its ports terminated with Dummy load (09-000902) in order to preserve the correct impedance of the device over the specified frequency range. 09-000902 specification PARAMETER SPECIFICATION Frequency Range 0 - 2500 MHz Power Rating 25 Watts continuous VSWR Better than 1.1:1 Impedance 50 Ohms Temperature Range -20 to +60°C RF Connectors N Type female Dimension 110.3mm x 38.1mm x Weight 485 grams Finish Black Anodised RF Connector N Type male Environmental IP66 MTBF >180,000 hours 14.3.4. Switched Attenuator 0.25W, 0 - 15dB (10-000901) In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive. Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the gain. 10-000901 provides attenuation from 0 - 15dB in 2 dB steps The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50Ω impedance over their operating frequency at both input and output. 10-000901 Specification PARAMETER SPECIFICATION Attenuation Values 0-15dB Attenuation Steps 1, 2, 4 and 8dB Power Handling 0.25 Watt Attenuation Accuracy ± 1.0 dB Frequency Range DC to 1GHz Impedance 50Ω Connectors SMA VSWR 1.3:1 Weight 0.2kg operation -20°C to +60°C Temperature range storage -40°C to +70°C
STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 250 of 500 14.3.5. Attenuator 25W, 60dB (10-002960) In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive. Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the gain. Attenuator 25W, 60dB (10-002960) is a fixed attenuator providing 60dB of signal attenuation. 10-002960 Specification PARAMETER SPECIFICATION Frequency Range DC to 2.5GHz Power Handling 25 W Attenuation 60 dB Attenuation Accuracy ± 0.5dB Return Loss to 2.2GHz 18dB Nominal Impedance 50 Ω RF Conectors N male to N female Finish Matt Black Anodise operational -20%C to +55%C Temperature range storage -20%C to +70%C

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