Axell Wireless 55-165703 55-165703 Cell Enhancer User Manual 80 330501HBKM

Axell Wireless 55-165703 Cell Enhancer 80 330501HBKM

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STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 375 of 500

20.3.2. 700MHz 5 Cavity Combiner System (50-132105)

700MHz 5 Cavity Combiner System (50-132105) consists of 5 Dielectric Cavity Resonators mounted

on two 3U rack mount panels, three on one panel and two on the other

700MHz 5 Cavity Combiner System (50-132105) List of Major Components

section Component

Part Component Part Description Qty Per

Assembly

20.3.2.3. 04-003402 Dielectric Cavity Resonator 5

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 376 of 500

700MHz 5CH CAVITY COMBINER OUTLINE DRAWING

1:3 50-1321105

18/10/2007

18/10/2007 AA

02/10/07

PORT JA3

PORT JA2

PORT JA1

PORT JA4 PORT JA5

8x SLOTS SUITABLE FOR M6 FIXINGS

532.2 12U

265.9 6U 265.9 6U

466.00

482.5

37.7 190.50 37.7 190.50

PRODUCT NUMBER : 50-132105

MATERIAL - FRONT PANEL & CHASSIS - ALUMINIUM

FINISH - FRONT PANEL - IRIDITE

FRONT PANEL - PAINTED RAL7035 (FRONT FACE & EDGES)

CONNECTORS - `N' TYPE SOCKET

AA ORIGINAL ISSUE PL

390

374

20.3.2.1. 700MHz 5 Cavity Combiner System (50-132105) Outline Drawing

Drawing number 50-1321105

STTRS DOCUMENTATION

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20.3.2.2. 700MHz 5 Cavity Combiner System (50-132105) System Diagram

Drawing number 50-132185

STTRS DOCUMENTATION

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20.3.2.3. Dielectric Cavity Resonator (04-003402)

Cavity resonators are used in this system for their high Q factor response and power handling

characteristics. Being finely tuned items, they can be prone to being de-tuned by mechanical shock or

vibration therefore these units should be handled, stored and installed with care.

Note that the cavities are coupled together using critical length harnesses. If any cable is to be

changed the exact same length and type of cable should be used for replacement.

04-003402 Specification

Specification Parameter

Frequency Range 764 to 776 MHz *

Bandwidth 25 kHz

Insertion Loss < 1.0 dB

Return Loss > 15 dB (at both ports)

Attenuation > 10 dB at Fc ± 1 MHz

Power Handling (CW) 20W

Environmental IP54

Size 124mm x 158mm x 157mm**

Weight 1.5 kg

Connectors N female

operation -20°C to +60°C

Temperature

range storage -40°C to +70°C

*Tuned to Customer’s specification

**Height is dependant upon position of tuning plunger

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 379 of 500

20.3.3. 700MHz 4 Cavity Combiner System (50-132106)

700MHz 4 Cavity Combiner System (50-132106) consists of 4 Dielectric Cavity Resonators mounted

on two 3U rack mount panels, three on one panel and two on the other

700MHz 4 Cavity Combiner System (50-132106) List of Major Components

Section Component

Part Component Part Description Qty Per

Assembly

20.3.3.3. 04-003402 Dielectric Cavity Resonator 4

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 380 of 500

A A

B B

C C

D D

E E

F F

Drawing No

Title

Customer

Drawn Date

Checked Approved

THIS IS A PROPRIE TARY DESIGN OF AERIAL FACILITIES LTD

REPRODUCTION OR USE OF THIS DESIGN B Y OTHER IS

PERMISSABLE ON LY IF EXPRESS LY AUTHORISED IN WRITING

BY AERIA L FACILITIES LTD

SCALE

Aerial Facilities Limited

England

Tel : 01494 777000

Fax : 01494 777002

ALL DIMENSIONS ARE IN mm

UNLESS OTHE RWISE S TATED

REVISION

No DESCRIPTION DATE BY

TWO DECIMA L PLACESG1mm

ONE DECIMA L PLACEG 0.3mm

NO DECIMA L PLACEG 1mm

TOLERANCES

700MHZ 4 C AVITY COMBINER OUTLINE DR AWING

1:3 50-1321106

26/10/2007

16/10/07

PORT JA2

PORT JA1

PORT JA4 PORT JA3

8x SLOTS SUI TABLE FOR M6 FIXINGS

532.2 12U

265.9 6U 265.9 6U

466.00

482.50

37.7 190.50 37.7 190.50

PRODUC T NUMBER : 50-132106

MATERIAL - FRON T PANEL & CHASSIS - ALUMINIUM

FINISH - FRON T PANEL - IRIDITE

FRON T PANE L - PAINTED RAL7035 (FRON T FACE & EDGES)

CONNEC TORS - `N' TYPE SOCKE T

AA ORIGINAL ISSUE

15/10/07

THIRD ANGLE PROJECTION

20.3.3.1. 700MHz 4 Cavity Combiner System (50-132106) Outline Drawing

Drawing number 50-1321106

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 381 of 500

20.3.3.2. 700MHz 4 Cavity Combiner System (50-132106) System Diagram

Drawing number 50-132186

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 382 of 500

20.3.3.3. Dielectric Cavity Resonator (04-003402

Cavity resonators are used in this system for their high Q factor response and power handling

characteristics. Being finely tuned items, they can be prone to being de-tuned by mechanical shock or

vibration therefore these units should be handled, stored and installed with care.

Note that the cavities are coupled together using critical length harnesses. If any cable is to be

changed the exact same length and type of cable should be used for replacement.

04-003402 Specification

Specification Parameter

Frequency Range 764 to 776 MHz*

Bandwidth 25 kHz

Insertion Loss < 1.0 dB

Return Loss > 15 dB (at both ports)

Attenuation > 10 dB at Fc ± 1 MHz

Power Handling (CW) 20W

Environmental IP54

Size 124mm x 158mm x 157mm**

Weight 1.5 kg

Connectors N female

operation -20°C to +60°C

Temperature

range storage -40°C to +70°C

*Tuned to Customer’s specification

**Height is dependant upon position of tuning plunger

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 383 of 500

21 CONVENTION PLACE STATION 700MHZ BDA (80-330554-2)

Rack number CR1-CR-07

Convention Place Station 700MHz BDA (80-330554-2) List of Major Components

Section Component

Part Component Part Description Qty Per

Assembly

21.3.1. 50-132102 700MHZ CHANNELISED AMP 9

21.3.2. 50-132104 700MHZ UPLINK AMPLIFIER/ DUPLEXER 1

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 384 of 500

21.1. Convention Place Station 700MHz BDA (80-330554-2) Outline Drawing

Drawing number 80-330554

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 385 of 500

21.2. Convention Place Station 700MHz BDA (80-330554-2) System Diagram

Drawing number 80-330584-2

STTRS DOCUMENTATION

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21.3. Convention Place Station 700MHz BDA (80-330554-2) Major Components

21.3.1. 700MHz Channelised Amplifier (50-132102)

3U rack mount shelf

700MHz Channelised Amplifier (50-132102) List of major Components

Section Component

Part Component Part Description Qty Per

Assembly

21.3.1.3. 09-000902 Dummy Load 1

21.3.1.4. 10-000901 Switched Attenuator 0.25W, 0 - 15dB 1

21.3.1.5. 11-006702 Low Noise Amplifier 1

21.3.1.6. 12-020804 Power Amplifier 1

21.3.1.7. 13-003412 DC/DC Converter 1

21.3.1.8. 17-009127 Channel Selectivity Module 1

21.3.1.9. 17-011501 Channel Control Module 1

21.3.1.10. 80-008902 24V Relay Board 1

21.3.1.11. 93-910048 Dual Isolator 1

21.3.1.12. 94-100004 Dual Diode Assembly 1

21.3.1.13. 96-300060 PSU 24V 1

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 387 of 500

POWER ON

ALARM

21.3.1.1. 700MHz Channelised Amplifier (50-132102) Outline Drawing

Drawing number 50-1321102

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 388 of 500

21.3.1.2. 700MHz Channelised Amplifier (50-132102) System diagram

Drawing number 50-132182

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 389 of 500

21.3.1.3. Dummy load 09-000902

Dual Isolator (770MHz) (93-910048) has one of its ports terminated with Dummy load 09-000902 in

order to achieve the correct power rating to absorb the reflected power levels that can be reasonably

expected within the system.

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

21.3.1.4. 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 390 of 500

7 8 96

1 2 3 4 5

9-Way Pin-Out Graphical Representation

21.3.1.5. 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 391 of 500

21.3.1.6 Power Amplifier (12-020804)

This amplifier is a Class AB 40W power amplifier from 860MHz to 960MHz in balanced configuration.

The amplifier demonstrates a very good input/output return loss (RL) and it has a built-in Current Fault

Alarm Function.

The unit 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.

12-020804 specification

Specification Parameter

Frequency Range 860 - 960MHz

Gain ≥28.0 dB

Gain Flatness 1.0dB p-p Max

∆Gain vs. Temperature 2.5dB Max

Input RL 15dB Min

Output RL 15dB Min

Output Power @ P1dB 46.0dBm Min

DC Supply Voltage 24 ± 0.5Vdc

RF Input Power 25dBm

At P1dB 6000mA Max DC Supply

Current With no RF input (Iqc) 1700mA Max

operational -40°C to +70°C Temperature

range storage -40°C to +100°C

7-Way Connector Pin-outs Connector Pin Signal

A1 +24V DC

A2 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

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21.3.1.7. DC/DC Converter (13-003412)

DC/DC Converter 13-003412

13-003412 is based upon an O.E.M. DC/DC Converter module with a wide input range and and is

used to derive a 12V fixed voltage power supply rail from a higher voltage supply, in this case 24V. In

the event of failure this unit should not be repaired, only replaced.

13-003412 Specification

PARAMETER SPECIFICATION

Operating voltage 18 – 75V DC

Output voltages 12V (typical)

Output current 5.0A (Max)

operational -10%C to +60%C Temperature

range storage -20%C to +70%C

21.3.1.8. Channel Selectivity Module (17-009127)

Channel Selectivity Module (17-009127) is employed when requirement dictates that very narrow

bandwidths (single operating channels), must be selected from within the operating passband. One

channel selectivity module is required for each channel.

The Channel Selectivity Module is an Up/Down frequency converter that mixes the incoming channel

frequency with a synthesised local oscillator, so that it is down-converted to an Intermediate

Frequency (IF) in the upper HF range. An eight pole crystal filter in the IF amplifier provides the

required selectivity to define the operating passband of the Cell Enhancer to a single PMR channel.

The same local oscillator then converts the selected IF signal back to the channel frequency.

Selectivity is obtained from a fixed bandwidth block filter operating at an intermediate frequency (IF) in

the low VHF range. This filter may be internal to the channel selectivity module (Crystal or SAW filter)

or an externally mounted bandpass filter, (LC or Helical Resonator). Various IF bandwidths can

therefore be accommodated. A synthesized Local Oscillator is employed in conjunction with high

performance frequency mixers, to translate between the signal frequency and IF.

The operating frequency of each channel selectivity module is set by the programming of channel

selectivity module frequencies and is achieved digitally, via hard wired links, banks of DIP switches, or

via an onboard RS232 control module, providing the ability to remotely set channel frequencies.

Automatic Level Control (ALC) is provided within each channel selectivity module such that the output

level is held constant for high level input signals. This feature prevents saturation of the output mixer

and of the associated amplifiers.

Alarms within the module inhibit the channel if the synthesised frequency is not locked. The

synthesiser will not usually go out of lock unless a frequency far out of band is programmed.

The channel selectivity module is extremely complex and, with the exception of channel frequency

programming within the design bandwidth, it cannot be adjusted or repaired without extensive

laboratory facilities and the necessary specialised personnel. If a fault is suspected with any channel

selectivity module it should be tested by substitution and the complete, suspect module should then

be returned to AFL for investigation.

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 393 of 500

21.3.1.9. Channel Control Module (17-011501)

The operating frequency for each channel in each repeater is programmed by 16 DIL (Dual In Line)

switches. The programming switches are mounted in the Channel Control Module. The Channel

Selectivity Modules are connected to the Channel Control Module via multi-way ribbon cables.

Adjacent to the DIL switches for each channel is a toggle switch to turn on and off individual channels

as required. A green LED indicates the power status of each channel.

A red LED shows the alarm condition for each channel. An illuminated alarm LED indicates that the

synthesiser has not achieved phase lock and that the module is disabled. There is a problem which

requires investigation, often a frequency programmed outside the operating frequency range.

The following information is necessary before attempting the programming procedure.

1. operating frequency

2. synthesiser channel spacing (step size)

3. synthesiser offset (IF)

Programming Procedure

Check that the required frequency falls within the operational frequency limits of the Cell Enhancer.

For each channel required, subtract the synthesiser offset from the required operating frequency and

record the resulting local oscillator frequency.

Divide each local oscillator frequency by the channel spacing and check that the result is an integer

(i.e: no remainder).

If the synthesiser division ratio is not an integer value, check the required operational frequency and

repeat the calculation checking for mistakes.

Convert the required local oscillator frequency to synthesiser programming switch state patterns

according to the following table. Note: the frequency of the passband will dictate the switch steps

used.

Switch Functions

Switch Number Synthesiser offset added when switch in UP position

12.5kHz step size 25kHz step size

1 +12.5kHz +25kHz

2 +25kHz +50kHz

3 +50kHz +100kHz

4 +100kHz +200kHz

5 +200kHz +400kHz

6 +400kHz +800kHz

7 +800kHz +1.6MHz

8 +1.6MHz +3.2MHz

9 +3.2MHz +6.4MHz

10 +6.4MHz +12.8MHz

11 +12.8MHz +25.6MHz

12 +25.6MHz +51.2MHz

13 +51.2MHz +102.4MHz

14 +102.4MHz +204.8MHz

15 +204.8MHz +409.6MHz

16 +409.6MHz +819.2MHz

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 394 of 500

Programming Example

Frequency required: 454.000MHz

Channel spacing: 12.5kHz

Synthesiser offset: -21.4MHz

The Local Oscillator frequency is therefore:

454.000 – 21.4 = 432.600MHz

Dividing the Local Oscillator frequency by the channel spacing of 0.0125MHz:

432.600 = 34608

0.0125

This is an integer value, therefore it is OK to proceed.

Switch settings

Local Oscillator

Frequency 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

432.600 MHz 1 0 0 0 0 1 1 1 0 0 1 1 0 0 0 0

Switch setting: 0 = switch DOWN (ON, frequency ignored )

1 = switch UP (OFF, frequency added )

17-011501 Controller Module DIP Switch Connector Data

IDC PIN 25-way

Connector Function

(12.5kHz steps) Function

(25kHz steps)

1 13 Freq. bit 1 (12.5kHz) Freq. bit 1 (25kHz)

2 25 Freq. bit 2 (25kHz) Freq. bit 2 (50kHz)

3 12 Freq. bit 3 (50kHz) Freq. bit 3 (100kHz)

4 24 Freq. bit 4 (100kHz) Freq. bit 4 (200kHz)

5 11 Freq. bit 5 (200kHz) Freq. bit 5 (400kHz)

6 23 Freq. bit 6 (400kHz) Freq. bit 6 (800kHz)

7 10 Freq. bit 7 (800kHz) Freq. bit 7 (1.6MHz)

8 22 Freq. bit 8 (1.6MHz) Freq. bit 8 (3.2MHz)

9 9 Freq. bit 9 (3.2MHz) Freq. bit 9 (6.4MHz)

10 21 Freq. bit 10 (6.4MHz) Freq. bit 10 (12.8MHz)

11 8 Freq. bit 11 (12.8MHz) Freq. bit 11 (25.6MHz)

12 20 Freq. bit 12 (25.6MHz) Freq. bit 12 (51.2MHz)

13 7 Freq. bit 13 (51.2MHz) Freq. bit 13 (102.4MHz)

14 19 Freq. bit 14 (102.4MHz) Freq. bit 14 (204.8MHz)

15 6 Freq. bit 15 (204.8MHz) Freq. bit 15 (409.6MHz)

16 18 Freq. bit 16 (409.6MHz) Freq. bit 16 (819.2MHz)

17 5 Module alarm Module alarm

18 17 Gain bit 1 Gain bit 1

19 4 Gain bit 2 Gain bit 2

20 16 Gain bit 3 Gain bit 3

21 3 Gain bit 4 Gain bit 4

22 15 (5V (5V

23 2 0V 0V

24 14 Switched 12V Switched 12V

25 1 0V 0V

26 --- --- ---

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 395 of 500

21.3.1.10. 24V Relay Board (80-008902)

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 screw terminals.

The relay is provided with a polarity protection diode 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.

80-008902 Technical Specification

Parameter Specification

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 15-way 0.1" pitch

operational -10°C to +55°C Temperature

range storage -40°C to +70°C

21.3.1.11. Dual Isolator (770MHz) (93-910048)

The purpose of fitting an isolator to the output of a transmitter in a multi-transmitter environment is so

that each output is afforded a degree of isolation from every other. Without the addition of Isolators,

simultaneous transmissions could interfere to create intermodulation products and spurious

transmissions would be created which would cause interference.

Dual Isolator (93-910048) is a ferro-magnetic RF device, which has directional properties. In the

forward direction, RF arriving at the input is passed to the output with minimal attenuation. In the

reverse direction, RF arriving at the output due to reflected power from a badly matched load, or due

to coupling with another transmitter, is routed into an RF load where it is absorbed. The isolator

therefore functions to prevent reflected RF energy reaching the output port of an amplifier where it

could cause intermodulation products or premature device failure.

Dual Isolator (93-910048) is as its name suggests a two stage device, essentially two isolators in one

casing. One isolator stage has an internal 10W load fitted, the second stage needs an external load

fitted of sufficient rating to absorb the reflected power levels that can be reasonably expected within

the system. In this instance Dual Isolator (93-910048) is fitted with external load 09-000902.

93-910048 Specification

Parameter Specification

Frequency Range 760-780 MHz

Insertion Loss 0.4 dB max.

Isolation 50 dB min.

Return Loss 23 dB min.

Power Handling 10W (internally fitted load)

RF Connectors N female

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 396 of 500

21.3.1.12. 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.

21.3.1.13. PSU 24V (96-300060)

The power supply unit is a switched-mode type capable of supplying 24V DC at 6.25Amps

continuously. Equipment of this type typically requires approximately 2-2.5Amps at 24V DC, so the

PSU will be used conservatively ensuring a long operational lifetime.

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 24.5V. The output

voltage may be varied using a multi-turn adjustment potentiometer mounted close to the DC output

terminals.

The line input voltage is sensed automatically, so no adjustment or link setting is needed by the

operator.

96-300060 Specification

AC Input Supply

110 or 220V nominal

Voltage 90 to 132 or 180 to 264V

(absolute limits)

Frequency 47 to 63Hz

DC Output Supply:

24V DC (nominal)

Voltage 22 to 26V (absolute limits)

Current 6.25A

STTRS DOCUMENTATION

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21.3.2. 700MHz Uplink Amplifier/ Duplexer (50-132104)

3U 19” rack mount tray

700MHz Uplink Amplifier/ Duplexer (50-132104) List of Major Components

Section Component

Part Component Part Description Qty Per

Assembly

21.3.2.3. 02-007206 Bandpass Filter 2

21.3.2.4. 05-003302 Four Way Splitter/Combiner 5

21.3.2.5. 07-015105 Wideband Asymmetric Coupler 1

21.3.2.6. 10-000701 Switched Attenuator 0.25Watt, 0 - 30dB 1

21.3.2.7. 10-000901 Switched Attenuator 0.25W, 0 - 15dB 1

21.3.2.8. 11-006702 Low Noise Amplifier 1

21.3.2.9. 12-021901 Low Power Amplifier 1

21.3.2.10. 13-003412 DC/DC Converter 1

17-001109 AGC Detector Unit 1 21.3.2.11. 17-001201 AGC Attenuator Unit 1

21.3.2.12. 80-007401 Dummy Load 7

21.3.2.13. 80-008901 12V (Single) Relay Board 1

21.3.2.14. 94-100004 Dual Diode Assembly 1

21.3.2.15. 96-300052 12V Switch-Mode PSU 1

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 398 of 500

POWER ON

ALARM

21.3.2.1. 700MHz Uplink Amplifier/ Duplexer (50-132104) Outline Drawing

Drawing number 50-1321104

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 399 of 500

21.3.2.2. 700MHz Uplink Amplifier/ Duplexer (50-132104) System Diagram

Drawing number 50-132184

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 400 of 500

21.3.2.3. 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

21.3.2.4. 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 401 of 500

21.3.2.5. 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

21.3.2.6. 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

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Document Number 80-330501HBKM – Issue A - Draft Page 402 of 500

21.3.2.7. 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

21.3.2.8. 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 403 of 500

7 8 96

1 2 3 4 5

9-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

21.3.2.9. 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

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 404 of 500

A1 A2

1 2

3 4 5

7-Way Connector Graphical Representation

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)

21.3.2.10. DC/DC Converter 13-003412

13-003412 is based upon an O.E.M. DC/DC Converter module with a wide input range and and is

used to derive a 12V fixed voltage power supply rail from a higher voltage supply, in this case 24V. In

the event of failure this unit should not be repaired, only replaced.

13-003412 Specification

PARAMETER SPECIFICATION

Operating voltage 18 – 75V DC

Output voltages 12V (typical)

Output current 5.0A (Max)

operational -10%C to +60%C Temperature

range storage -20%C to +70%C

STTRS DOCUMENTATION

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21.3.2.11. AGC System

AGC Detector Unit (17-001109)

AGC Attenuator Unit (17-001201)

EQUIPMENT 700MHz Uplink Amplifier/ Duplexer (50-132104) is fitted with a wide dynamic range

Automatic Gain Control (AGC) system. This is fitted in the Uplink path to avoid overloading the

amplifiers (with the associated performance degradation) should a mobile be operated very close to

the unit.

The AFL wide dynamic range Automatic Gain Control system consists of two units, a

detector/amplifier and an attenuator. The logarithmic 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.

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.

The AGC onset level is adjusted by the choice of sampler resistor R1 and by the setting of

potentiometer VR1, (factory set at the time of system test) do not adjust unless able to monitor

subsequent RF levels. 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 AGC detector unit.

Wide Dynamic Range AGC Specification

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 90gm

Weight detector/amp 100gm

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 406 of 500

21.3.2.12. Dummy Load (80-007401)

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 the Four Way Splitters (05-003302) each have their unused ports terminated with

Dummy Load (80-007401) in order to preserve the correct impedance of the devices over the

specified frequency range. This also has the advantage of allowing future expansion capability should

extra channels or other functions become necessary.

Dummy Load (80-007401) Specification

Parameter Specification

Frequency Range 0 to 1000MHz

Power Rating 1.6 Watts

0-500MHz 1.2:1 VSWR

(Max) 500-1000MHz 1.3:1

Temperature -20 to +55°C

Connector ‘N’ type Male

Nominal Impedance 50 Ohms

21.3.2.13. 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

21.3.2.14. 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 407 of 500

21.3.2.15. 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.

The line input 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 408 of 500

22. INTERNATIONAL STATION 800MHZ BDA (80-330555-1)

Rack number CR9-CR-07

International Station 800MHz BDA (80-330555-1)

Section Component

Part Component Part Description Qty Per

Assembly

22.3.1. 50-132203 800MHz Output Quadplexer/Combiner 1

22.3.2. 50-132205 800MHz 5 Cavity Combiner System 2

STTRS DOCUMENTATION

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22.1. International Station 800MHz BDA (80-330555-1) Rack elevation

Drawing number 80-330555

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22.2. International Station 800MHz BDA (80-330555-1) System diagram

Drawing number 80-330585-1

STTRS DOCUMENTATION

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22.3. International Station 800MHz BDA (80-330555-1) Major Components

22.3.1. 800MHz Output Quadplexer/Combiner (50-132203)

3U rack mount tray

800MHz Output Quadplexer/Combiner (50-132203) List of major Components

Section Component

Part Component Part Description Qty Per

Assembly

22.3.1.3. 02-007206 Bandpass Filter 4

22.3.1.4. 05-003007 4 Port Hybrid Coupler 1

22.3.1.5. 07-015105 Wideband Asymmetric Coupler 1

22.3.1.6. 09-000902 Dummy load 1

STTRS DOCUMENTATION

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22.3.1.1. 800MHz Output Quadplexer/Combiner (50-132203) Outline Drawing

Drawing number 50-1322103

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Document Number 80-330501HBKM – Issue A - Draft Page 413 of 500

22.3.1.2. 800MHz Output Quadplexer/Combiner (50-132203) System Diagram

Drawing number 50-132283

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22.3.1.3. Bandpass Filter (02-007206)