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

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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
Frequency Range
Power Handling
Attenuation
Attenuation Accuracy
Return Loss to 2.2GHz
Nominal Impedance
RF Conectors
Finish
Temperature operational
range
storage
SPECIFICATION
DC to 2.5GHz
25 W
60 dB
± 0.5dB
18dB
50 Ω
N male to N female
Matt Black Anodise
-20%C to +55%C
-20%C to +70%C
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15
ATTENUATOR SHELF (ITAC) 3 (55-165506)
Attenuator Shelf (ITAC) 3 (55-165506) list of major components
Section
15.3.1.
15.3.2.
15.3.3.
15.3.4.
15.3.5.
Component
Part
05-002602
05-003007
09-000902
10-000901
10-002960
Component Part Description
900MHz Splitter/Combiner
4 Port Hybrid Coupler
Dummy load
Switched Attenuator 0.25W, 0 - 15dB
Attenuator 25W, 60dB
Qty. Per
Assembly
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15.1. Attenuator Shelf (ITAC) 3 (55-165506) outline drawing
Drawing number 55-1655106
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15.2 Attenuator Shelf (ITAC) 3 (55-165506) system diagram
Drawing number 55-165586
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15.3. Attenuator Shelf (ITAC) 3 (55-165506) major components
15.3.1.
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
Frequency
Narrowband
range
Broadband
Narrowband
Bandwidth
Broadband
Input ports
Output ports
Narrowband
Insertion loss
Broadband
Return loss input & output
Impedance
Narrowband
Isolation
Broadband
MTFB
Splitting
Power rating
Combining
Connectors
Weight
Size
15.3.2.
SPECIFICATION
815 – 960MHz
800 – 1200MHz
145MHz
400MHz
3.3dB
3.5dB
1.3:1
50Ω
>20dB
>18dB
>180,000 hours
20Watts
0.5Watt
SMA female
200g (approximately)
54 x 44 x 21mm
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
Frequency range:
Bandwidth:
Rejection:
Insertion loss:
Connectors:
Weight:
operational
Temperature
range:
storage
SPECIFICATION
700-900MHz
200MHz
>14dB
6.5dB (in band, typical)
SMA
<1.0kg
-10%C to +60%C
-20%C to +70%C
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15.3.3.
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
Frequency Range
Power Rating
VSWR
Impedance
Temperature Range
RF Connectors
Dimension
Weight
Finish
RF Connector
Environmental
MTBF
15.3.4.
SPECIFICATION
0 - 2500 MHz
25 Watts continuous
Better than 1.1:1
50 Ohms
-20 to +60°C
N Type female
110.3mm x 38.1mm x
485 grams
Black Anodised
N Type male
IP66
>180,000 hours
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
Attenuation Values
Attenuation Steps
Power Handling
Attenuation Accuracy
Frequency Range
Impedance
Connectors
VSWR
Weight
Temperature operation
range
storage
SPECIFICATION
0-15dB
1, 2, 4 and 8dB
0.25 Watt
± 1.0 dB
DC to 1GHz
50Ω
SMA
1.3:1
0.2kg
-20°C to +60°C
-40°C to +70°C
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15.3.5.
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
Frequency Range
Power Handling
Attenuation
Attenuation Accuracy
Return Loss to 2.2GHz
Nominal Impedance
RF Conectors
Finish
Temperature operational
range
storage
SPECIFICATION
DC to 2.5GHz
25 W
60 dB
± 0.5dB
18dB
50 Ω
N male to N female
Matt Black Anodise
-20%C to +55%C
-20%C to +70%C
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16.
CONVENTION PLACE STATION LINE AMPLIFIER (80-330556)
C01-CR-05
Description of Convention Place Station Line Amp. (80-330556)
From the top of the rack
55-165709
55-165703
55-165704
Convention Place Station Line Amp. (80-330556) list of major components
Section
16.3.1.
16.3.2.
16.3.3.
Component
Part
55-165703
55-165704
55-165709
Component Part Description
800MHz Line Amplifier
700MHz LINE AMP + FILTERS (INT AMP)
Convention Place Station Splitter
Qty. Per
Assembly
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16.1. Convention Place Station Line Amp. (80-330556) Rack elevation
Drawing number 80-330556
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16.2. Convention Place Station Line Amp. (80-330556) System diagram
Drawing number 80-330586
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16.3. Convention Place Station Line Amp. (80-330556) Alarm wiring diagram
Drawing number 80-330526
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16.4 Convention Place Station Line Amp. (80-330556) Sub Components
16.4.1.
800MHz Line Amplifier (55-165703)
800MHz Line Amplifier (55-165703) List of Major Components
800MHz Line Amplifier (55-165703) List of Major Components
Section
16.4.1.3.
16.4.1.4.
16.4.1.5.
16.4.1.6.
16.4.1.7.
16.4.1.8.
16.4.1.9.
16.4.1.10.
16.4.1.11.
16.4.1.12.
16.4.1.13.
16.4.1.14.
Component
Part
02-007206
07-015105
10-000901
11-006702
12-018002
12-021901
17-001109*
17-001117*
17-001201*
20-001601
80-008901
94-100004
96-200047
96-300052
Component Part Description
Bandpass Filter
Wideband Asymmetric Coupler
Switched Attenuator 0.25W, 0 - 15dB
Low Noise Amplifier
Power Amplifier (20W 800MHz )
Low Power Amplifier
AGC Detector Assembly (Logarithmic)
AGC Detector Assembly
AGC Attenuator Assembly
12V (Dual) Relay Board
12V (Single) Relay Board
Dual Diode Assembly
DC/DC Converter
12V Switch-Mode PSU
Qty. Per
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
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16.4.1.1. 800MHz Line Amplifier (55-165703) Outline Drawing
Drawing number 55-1657103
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16.4.1.2. 800MHz Line Amplifier (55-165703) System Diagram
Drawing number 55-165783
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16.4.1.3. 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
Response type
Frequency range
Bandwidth
Number of sections
Insertion loss
VSWR
Connectors
Power handling
Temperature
operation
range
storage
Weight
SPECIFICATION
Chebyshev
800 - 950MHz *
25MHz *
1.2 dB
better than 1.2:1
SMA female
100W max
-20°C to +60°C
-40°C to +70°C
3 kg (typical)
*tuned to Customer's specification
16.4.1.4. 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
Construction
Frequency
Through loss
Coupling level
Isolation
Weight
Connectors
Temperature
operation
range
storage
SPECIFICATION
Inductive air gap
800-2500MHz
0.4dB (typical)
-30dB ±0.5dB
N/A
<1.0kg
SMA, female
-20°C to +60°C
-40°C to +70°C
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16.4.1.5. 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
Attenuation Values
Attenuation Steps
Power Handling
Attenuation Accuracy
Frequency Range
Impedance
Connectors
VSWR
Weigh
Temperature operation
range
storage
SPECIFICATION
0-15dB
1, 2, 4 and 8dB
0.25 Watt
± 1.0 dB
DC to 1GHz
50Ω
SMA
1.3:1
0.2kg
-20°C to +60°C
-40°C to +70°C
16.4.1.6. 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
Frequency range:
Bandwidth:
Gain:
1dB Compression point:
OIP3:
Input/Output return loss:
Noise figure:
Power consumption:
Supply voltage:
Connectors:
operational:
Temperature range:
storage:
Size:
Weight:
SPECIFICATION
800 – 1000MHz
<200MHz
29dB (typical)
20dBm
33dBm
>18dB
1.3dB (typical)
180mA @ 24V DC
10-24V DC
SMA female
-10°C to +60°C
-20°C to +70°C
90 x 55 x 30.2mm
290gms (approximately)
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Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details
Connector pin
Signal
+Ve input (10-24V)
GND
Alarm RelayO/P bad
Alarm Relay common
Alarm Relay good
No connection
TTL voltage set
TTL alarm/0V (good)
O/C good/0V bad
9-Way Pin-Out Graphical Representation
16.4.1.7. 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
Frequency range:
Small signal gain:
Gain flatness:
I/O Return loss:
1dB compression point:
OIP3:
Supply voltage:
Supply current:
Temperature
operational:
range
storage:
Weight:
SPECIFICATION
800-960MHz
30dB
±1.2dB
>18dB
42.8dBm
56dBm
24V DC
5.0Amps (Typical)
-10°C to +60°C
-20°C to +70°C
<2kg (no heatsink)
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Power Amplifier (12-018002) 7-Way Connector Pin-outs
Connector Pin
A1 (large pin)
A2 (large pin)
Signal
+24V DC
GND
Alarm relay common
TTL alarm/0V good
Alarm relay contact (bad)
Alarm relay contact (good)
O/C good/0V bad (TTL)
16.4.1.8. 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
Frequency range
Bandwidth
Maximum RF output
Gain
1dB compression point
3rd order intercept point
Noise Figure
VSWR
Connectors
Supply
Temperature operational
range
storage
Weight
Size
SPECIFICATION
800-960MHz*
20MHz *
>1.0 Watt
15dB
+30.5dBm
+43dBm
<6dB
better than 1.5:1
SMA female
500mA @ 10-15V DC
-10°C to +60°C
-20°C to +70°C
0.5 kg
167x52x25mm
* Tuned to Customer’s specification
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Low Power Amplifier (12-021901) 7-Way Connector Pin-outs
Connector Pin
A1 (large pin)
A2 (large pin)
Signal
+24V DC
GND
Alarm relay common
TTL alarm/0V good
Alarm relay contact (bad)
Alarm relay contact (good)
O/C good/0V bad (TTL)
16.4.1.9. Automatic Gain Control
17-001109
17-001117
17-001201
AGC Detector Assembly (Logarithmic)
AGC Detector Assembly
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.
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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
Frequency range
Attenuation range
Attenuation steps
VSWR
RF Connectors
Power
attenuator
handling
detector/amp
Temperature
operation
range
storage
attenuator pcb
Size
detector/amp pcb
attenuator
Weight
detector/amp
SPECIFICATION
up to 1000MHz
3 to 30dB
continuously variable
better than 1.2:1
SMA female
1W
>30W (or as required)
-10°C to +60°C
-20°C to +70°C
50 x 42 x 21mm
54 x 42 x 21mm
90grams
100grams
16.4.1.10. 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
Temperature
operational: -10°C to +60°C
range
storage: -20°C to +70°C
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16.4.1.11. 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
Temperature
operational -10°C to +60°C
range
storage -20°C to +70°C
16.4.1.12. 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.
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16.4.1.13. 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.
96-200047 Specification
PARAMETER
DC Input Voltage range
DC Output voltage
Max. current load
Temperature
Operation
range
Storage
Working Humidity
SPECIFICATION
19 to 36V
12V ± 1%
12.5Amps
-10°C to +60°C
-20°C to +85°C
20 to 90% RHNC
16.4.1.14. 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
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16.4.2
700MHz Line Amplifier (55-165704)
Description of 700MHz Line Amplifier (55-165704)
700MHz Line Amplifier (55-165704) List of Major Components
Section
16.4.2.3.
16.4.2.4.
16.4.2.5.
16.4.2.6.
16.4.2.7.
16.4.2.8.
16.4.2.9.
16.4.2.10.
16.4.2.11.
16.4.2.12.
16.4.2.13.
Component
Part
02-007206
07-015105
10-000901
11-006702
12-018002
12-021901
17-001109*
17-001117*
17-001201*
80-008901
94-100004
96-200047
96-300052
Component Part Description
Bandpass Filter
Wideband Asymmetric Coupler
Switched Attenuator 0.25W, 0 - 15dB
Low Noise Amplifier
Power Amplifier (20W 800MHz )
Low Power Amplifier
AGC Detector Assembly (Logarithmic)
AGC Detector Assembly
AGC Attenuator Assembly
12V (Single) Relay Board
Dual Diode Assembly
DC/DC Converter
12V Switch-Mode PSU
Qty. Per
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
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16.4.2.1. 700MHz Line Amplifier (55-165704) Outline Drawing
Drawing number 55-1657104
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16.4.2.2. 700MHz Line Amplifier (55-165704) System Diagram
Drawing number 55-165784
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16.4.2.3. 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
Response type
Frequency range
Bandwidth
Number of sections
Insertion loss
VSWR
Connectors
Power handling
Temperature
operation
range
storage
Weight
SPECIFICATION
Chebyshev
800 - 950MHz *
25MHz *
1.2 dB
better than 1.2:1
SMA female
100W max
-20°C to +60°C
-40°C to +70°C
3 kg (typical)
*tuned to Customer's specification
16.4.2.4. 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
Construction
Frequency
Through loss
Coupling level
Isolation
Weight
Connectors
Temperature
operation
range
storage
SPECIFICATION
Inductive air gap
800-2500MHz
0.4dB (typical)
-30dB ±0.5dB
N/A
<1.0kg
SMA, female
-20°C to +60°C
-40°C to +70°C
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16.4.2.5. 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
Attenuation Values
Attenuation Steps
Power Handling
Attenuation Accuracy
Frequency Range
Impedance
Connectors
VSWR
Weigh
Temperature operation
range
storage
SPECIFICATION
0-15dB
1, 2, 4 and 8dB
0.25 Watt
± 1.0 dB
DC to 1GHz
50Ω
SMA
1.3:1
0.2kg
-20°C to +60°C
-40°C to +70°C
16.4.2.6. 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
Frequency range:
Bandwidth:
Gain:
1dB Compression point:
OIP3:
Input/Output return loss:
Noise figure:
Power consumption:
Supply voltage:
Connectors:
operational:
Temperature range:
storage:
Size:
Weight:
SPECIFICATION
800 – 1000MHz
<200MHz
29dB (typical)
20dBm
33dBm
>18dB
1.3dB (typical)
180mA @ 24V DC
10-24V DC
SMA female
-10°C to +60°C
-20°C to +70°C
90 x 55 x 30.2mm
290gms (approximately)
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Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details
Connector pin
Signal
+Ve input (10-24V)
GND
Alarm RelayO/P bad
Alarm Relay common
Alarm Relay good
No connection
TTL voltage set
TTL alarm/0V (good)
O/C good/0V bad
9-Way Pin-Out Graphical Representation
16.4.2.7. 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
Frequency range:
Small signal gain:
Gain flatness:
I/O Return loss:
1dB compression point:
OIP3:
Supply voltage:
Supply current:
Temperature
operational:
range
storage:
Weight:
SPECIFICATION
800-960MHz
30dB
±1.2dB
>18dB
42.8dBm
56dBm
24V DC
5.0Amps (Typical)
-10°C to +60°C
-20°C to +70°C
<2kg (no heatsink)
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Power Amplifier (12-018002) 7-Way Connector Pin-outs
Connector Pin
A1 (large pin)
A2 (large pin)
Signal
+24V DC
GND
Alarm relay common
TTL alarm/0V good
Alarm relay contact (bad)
Alarm relay contact (good)
O/C good/0V bad (TTL)
16.4.2.8. 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
Frequency range
Bandwidth
Maximum RF output
Gain
1dB compression point
3rd order intercept point
Noise Figure
VSWR
Connectors
Supply
Temperature operational
range
storage
Weight
Size
SPECIFICATION
800-960MHz*
20MHz *
>1.0 Watt
15dB
+30.5dBm
+43dBm
<6dB
better than 1.5:1
SMA female
500mA @ 10-15V DC
-10°C to +60°C
-20°C to +70°C
0.5 kg
167x52x25mm
* Tuned to Customer’s specification
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Low Power Amplifier (12-021901) 7-Way Connector Pin-outs
Connector Pin
A1 (large pin)
A2 (large pin)
Signal
+24V DC
GND
Alarm relay common
TTL alarm/0V good
Alarm relay contact (bad)
Alarm relay contact (good)
O/C good/0V bad (TTL)
16.4.2.9. Automatic Gain Control
17-001109
17-001117
17-001201
AGC Detector Assembly (Logarithmic)
AGC Detector Assembly
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.
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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
Frequency range
Attenuation range
Attenuation steps
VSWR
RF Connectors
Power
attenuator
handling
detector/amp
Temperature
operation
range
storage
attenuator pcb
Size
detector/amp pcb
attenuator
Weight
detector/amp
SPECIFICATION
up to 1000MHz
3 to 30dB
continuously variable
better than 1.2:1
SMA female
1W
>30W (or as required)
-10°C to +60°C
-20°C to +70°C
50 x 42 x 21mm
54 x 42 x 21mm
90grams
100grams
16.4.2.10. 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
Temperature
operational -10°C to +60°C
range
storage -20°C to +70°C
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16.4.2.11. 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.
16.4.2.12. 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
DC Input Voltage range
DC Output voltage
Max. current load
Temperature
Operation
range
Storage
Working Humidity
SPECIFICATION
19 to 36V
12V ± 1%
12.5Amps
-10°C to +60°C
-20°C to +85°C
20 to 90% RHNC
16.3.2.13. 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
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16.4.3.
Convention Place Station Splitter (55-165709)
2U rack mount tray
Convention Place Station Splitter (55-165709) major components
Section
16.4.3.3.
16.4.3.4.
Component
Part
05-002602
07-015102
Component Part Description
900MHz Splitter/Combiner
Wideband Asymmetric Coupler
Qty. Per
Assembly
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16.4.3.1. Convention Place Station Splitter (55-165709) outline drawing
Drawing number 55-1657109
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16.4.3.2. Convention Place Station Splitter (55-165709) system diagram
Drawing number 55-165789
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16.4.3.3. 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
Frequency
Narrowband:
range:
Broadband:
Narrowband:
Bandwidth:
Broadband:
Input ports:
Output ports:
Narrowband:
Insertion loss:
Broadband:
Return loss input & output:
Impedance:
Narrowband:
Isolation:
Broadband:
MTFB:
Splitting:
Power rating:
Combining:
Connectors:
Weight:
Size:
SPECIFICATION
815 – 960MHz
800 – 1200MHz
145MHz
400MHz
3.3dB
3.5dB
1.3:1
50Ω
>20dB
>18dB
>180,000 hours
20Watts
0.5Watt
SMA female
200g (approximately)
54 x 44 x 21mm
16.4.3.4. 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
Frequency Range
Coupling Value
Main Line Insertion Loss
VSWR
Directivity
Power Rating
RF Connectors
Temperature
operation
range
storage
SPECIFICATION
800 - 2500 MHz
10 dB ± 1.0 dB
<1.6 dB
1.4:1
>18 dB
200 Watts
‘N’ female
-20°C to +60°C
-40°C to +70°C
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17.
INTERNATIONAL (NO NPSPAC) LINE AMPLIFIER (80-330557)
Rack C09-CR-06
International (no NPSPAC) Line Amp. (80-330557) list of major components
Section
17.4.1.
17.4.2.
17.4.3.
Component
Part
55-165705
55-165706
55-165710
Component Part Description
800MHz Line Amplifier (NO NSP)
700MHz Line Amplifier (NO NSP)
International Station Splitter
Qty. Per
Assembly
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17.1. International (no NPSPAC) Line Amp. (80-330557) Rack elevation
Drawing number 80-330557
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17.2. International (no NPSPAC) Line Amp. (80-330557) System diagram
Drawing number 80-330587
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17.3. International (no NPSPAC) Line Amp. (80-330557) Alarm wiring diagram
Drawing number 80-330527
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17.4. International (no NPSPAC) Line Amp. (80-330557) major components
17.4.1.
800MHz Line Amplifier (no NPSPAC) (55-165705)
800MHz Line Amplifier (no NPSPAC) (55-165705) List of Major Components
section
17.4.1.3.
17.4.1.4.
17.4.1.5.
17.4.1.6.
17.4.1.7.
17.4.1.8.
17.4.1.9.
17.4.1.10.
17.4.1.11.
17.4.1.12.
17.4.1.13.
17.4.1.14.
Component
Part
02-007201
02-007206
07-015105
10-000901
11-006702
12-018002
12-021901
17-001109*
17-001117*
17-001201*
80-008901
94-100004
96-200047
96-300052
Component Part Description
Bandpass Filter
Bandpass Filter
Wideband Asymmetric Coupler
Switched Attenuator 0.25W, 0 - 15dB
Low Noise Amplifier
Power Amplifier
Low Power Amplifier
AGC Detector Assembly (Logarithmic)
AGC Detector Assembly
AGC Attenuator Assembly
12V (Single) Relay Board
Dual Diode Assembly
DC/DC Converter
12V Switch-Mode PSU (96-300052)
Qty. Per
Assembly
*The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control
(AGC) system used in 800MHz Line Amplifier (no NPSPAC) (55-165705); 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
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17.4.1.1. 800MHz Line Amplifier (no NPSPAC) (55-165705) Outline Drawing
Drawing number 55-1657105
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14.4.1.2. 800MHz Line Amplifier (no NPSPAC) (55-165705) System Diagram
Drawing number 55-165785
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17.4.1.3. Bandpass Filter (02-012701)
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 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.
02-012701 Specification
PARAMETER
SPECIFICATION
Frequency range 1805 – 1880 MHz *
Insertion loss <0.6 dB
>60 dB over 1710 – 1785 MHz
Rejection
>40 dB over 1905 – 2170 MHz
Return loss > 20 dB
Power handling 200W (CW)
Temperature
operation -20°C to +60°C
range
storage -40°C to +70°C
Size 227 x 95 x 60mm (case only)
* tuned to customer’s specification
17.4.1.4. 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
Response type
Frequency range
Bandwidth
Number of sections
Insertion loss
VSWR
Connectors
Power handling
Temperature
operation
range
storage
Weight
SPECIFICATION
Chebyshev
800 - 950MHz *
25MHz *
1.2 dB
better than 1.2:1
SMA female
100W max
-20°C to +60°C
-40°C to +70°C
3 kg (typical)
*tuned to Customer's specification
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17.4.1.5. 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
Construction
Frequency
Through loss
Coupling level
Isolation
Weight
Connectors
Temperature
operation
range
storage
SPECIFICATION
Inductive air gap
800-2500MHz
0.4dB (typical)
-30dB ±0.5dB
N/A
<1.0kg
SMA, female
-20°C to +60°C
-40°C to +70°C
17.4.1.6. 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
Attenuation Values
Attenuation Steps
Power Handling
Attenuation Accuracy
Frequency Range
Impedance
Connectors
VSWR
Weigh
Temperature operation
range
storage
SPECIFICATION
0-15dB
1, 2, 4 and 8dB
0.25 Watt
± 1.0 dB
DC to 1GHz
50Ω
SMA
1.3:1
0.2kg
-20°C to +60°C
-40°C to +70°C
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17.4.1.7. 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
Frequency range
Bandwidth
Gain
1dB Compression point
OIP3
Input/Output return loss
Noise figure
Power consumption
Supply voltage
Connectors
operational
Temperature range:
storage
Size
Weight
SPECIFICATION
800 – 1000MHz
<200MHz
29dB (typical)
20dBm
33dBm
>18dB
1.3dB (typical)
180mA @ 24V DC
10-24V DC
SMA female
-10°C to +60°C
-20°C to +70°C
90 x 55 x 30.2mm
290gms (approximately)
Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details
Connector pin
Signal
+Ve input (10-24V)
GND
Alarm RelayO/P bad
Alarm Relay common
Alarm Relay good
No connection
TTL voltage set
TTL alarm/0V (good)
O/C good/0V bad
9-Way Pin-Out Graphical Representation
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17.4.1.8. 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
Frequency range:
Small signal gain:
Gain flatness:
I/O Return loss:
1dB compression point:
OIP3:
Supply voltage:
Supply current:
Temperature
operational:
range
storage:
Weight:
SPECIFICATION
800-960MHz
30dB
±1.2dB
>18dB
42.8dBm
56dBm
24V DC
5.0Amps (Typical)
-10°C to +60°C
-20°C to +70°C
<2kg (no heatsink)
Power Amplifier (12-018002) 7-Way Connector Pin-outs
Connector Pin
A1 (large pin)
A2 (large pin)
Signal
+24V DC
GND
Alarm relay common
TTL alarm/0V good
Alarm relay contact (bad)
Alarm relay contact (good)
O/C good/0V bad (TTL)
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17.4.1.9. 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
Frequency range
Bandwidth
Maximum RF output
Gain
1dB compression point
3rd order intercept point
Noise Figure
VSWR
Connectors
Supply
Temperature operational
range
storage
Weight
Size
SPECIFICATION
800-960MHz*
20MHz *
>1.0 Watt
15dB
+30.5dBm
+43dBm
<6dB
better than 1.5:1
SMA female
500mA @ 10-15V DC
-10°C to +60°C
-20°C to +70°C
0.5 kg
167x52x25mm
* Tuned to Customer’s specification
Low Power Amplifier (12-021901) 7-Way Connector Pin-outs
Connector Pin
A1 (large pin)
A2 (large pin)
Signal
+24V DC
GND
Alarm relay common
TTL alarm/0V good
Alarm relay contact (bad)
Alarm relay contact (good)
O/C good/0V bad (TTL)
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Page 297 of 500
7.4.1.10. Automatic Gain Control
17-001109
17-001117
17-001201
AGC Detector Assembly (Logarithmic)
AGC Detector Assembly
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 (no NPSPAC) (55-165705); 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 (no NPSPAC) (55-165705) is fitted with two differing types of Automatic Gain
Control (AGC) system, one linear, and one logarithmic. The AGC with logarithmic detector (17001117) 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.
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AGC Specification (both types)
PARAMETER
Frequency range
Attenuation range
Attenuation steps
VSWR
RF Connectors
Power
attenuator
handling
detector/amp
Temperature
operation
range
storage
attenuator pcb
Size
detector/amp pcb
attenuator
Weight
detector/amp
SPECIFICATION
up to 1000MHz
3 to 30dB
continuously variable
better than 1.2:1
SMA female
1W
>30W (or as required)
-10°C to +60°C
-20°C to +70°C
50 x 42 x 21mm
54 x 42 x 21mm
90grams
100grams
17.4.1.11. 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
Temperature
operational -10°C to +60°C
range
storage -20°C to +70°C
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17.4.1.12. 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.
17.4.1.13. 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.
96-200047 Specification
PARAMETER
DC Input Voltage range
DC Output voltage
Max. current load
Temperature
Operation
range
Storage
Working Humidity
SPECIFICATION
19 to 36V
12V ± 1%
12.5Amps
-10°C to +60°C
-20°C to +85°C
20 to 90% RHNC
17.4.1.14. 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
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17.4.2.
700MHz Line Amplifier (no NPSPAC) (55-165706)
700MHz Line Amplifier (no NPSPAC) (55-165706) List of Major Components
Section
17.4.2.3.
17.4.2.4.
17.4.2.5.
17.4.2.6.
17.4.2.7.
17.4.2.8.
17.4.1.9.
17.4.2.10.
17.4.2.11.
17.4.2.12.
17.4.2.13.
17.4.2.14.
Component
Part
02-007201
02-007206
07-015105
10-000901
11-006702
12-018002
12-021901
17-001109
17-001117
17-001201
80-008901
94-100004
96-200047
96-300052
Component Part Description
Bandpass Filter
Bandpass Filter
Wideband Asymmetric Coupler
Switched Attenuator 0.25W, 0 - 15dB
Low Noise Amplifier
Power Amplifier
Low Power Amplifier
AGC Detector Assembly (Logarithmic)
AGC Detector Assembly
AGC Attenuator Assembly
12V (Single) Relay Board
Dual Diode Assembly
DC/DC Converter
12V Switch-Mode PSU (96-300052)
Qty. Per
Assembly
*The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control
(AGC) system used in 700MHz Line Amplifier (no NPSPAC) (55-165705); 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
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17.4.2.1. 700MHz Line Amplifier (no NPSPAC) (55-165706) Outline Drawing
Drawing number 55-1657106
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17.4.2.2. 700MHz Line Amplifier (no NPSPAC) (55-165706) System Diagram
Drawing number 55-165786
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17.4.2.3. Bandpass Filter (02-012701)
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 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.
02-012701 Specification
PARAMETER
SPECIFICATION
Frequency range 1805 – 1880 MHz *
Insertion loss <0.6 dB
>60 dB over 1710 – 1785 MHz
Rejection
>40 dB over 1905 – 2170 MHz
Return loss > 20 dB
Power handling 200W (CW)
Temperature
operation -20°C to +60°C
range
storage -40°C to +70°C
Size 227 x 95 x 60mm (case only)
* tuned to customer’s specification
17.4.2.4. 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
Response type
Frequency range
Bandwidth
Number of sections
Insertion loss
VSWR
Connectors
Power handling
Temperature
operation
range
storage
Weight
SPECIFICATION
Chebyshev
800 - 950MHz *
25MHz *
1.2 dB
better than 1.2:1
SMA female
100W max
-20°C to +60°C
-40°C to +70°C
3 kg (typical)
*tuned to Customer's specification
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17.4.2.5. 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
Construction
Frequency
Through loss
Coupling level
Isolation
Weight
Connectors
Temperature
operation
range
storage
SPECIFICATION
Inductive air gap
800-2500MHz
0.4dB (typical)
-30dB ±0.5dB
N/A
<1.0kg
SMA, female
-20°C to +60°C
-40°C to +70°C
17.4.2.6. 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
Attenuation Values
Attenuation Steps
Power Handling
Attenuation Accuracy
Frequency Range
Impedance
Connectors
VSWR
Weigh
Temperature operation
range
storage
SPECIFICATION
0-15dB
1, 2, 4 and 8dB
0.25 Watt
± 1.0 dB
DC to 1GHz
50Ω
SMA
1.3:1
0.2kg
-20°C to +60°C
-40°C to +70°C
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Document Number 80-330501HBKM – Issue A - Draft
Page 305 of 500
17.4.2.7. 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
Frequency range
Bandwidth
Gain
1dB Compression point
OIP3
Input/Output return loss
Noise figure
Power consumption
Supply voltage
Connectors
operational
Temperature range:
storage
Size
Weight
SPECIFICATION
800 – 1000MHz
<200MHz
29dB (typical)
20dBm
33dBm
>18dB
1.3dB (typical)
180mA @ 24V DC
10-24V DC
SMA female
-10°C to +60°C
-20°C to +70°C
90 x 55 x 30.2mm
290gms (approximately)
Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details
Connector pin
Signal
+Ve input (10-24V)
GND
Alarm RelayO/P bad
Alarm Relay common
Alarm Relay good
No connection
TTL voltage set
TTL alarm/0V (good)
O/C good/0V bad
9-Way Pin-Out Graphical Representation
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17.4.2.8. 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
Frequency range:
Small signal gain:
Gain flatness:
I/O Return loss:
1dB compression point:
OIP3:
Supply voltage:
Supply current:
Temperature
operational:
range
storage:
Weight:
SPECIFICATION
800-960MHz
30dB
±1.2dB
>18dB
42.8dBm
56dBm
24V DC
5.0Amps (Typical)
-10°C to +60°C
-20°C to +70°C
<2kg (no heatsink)
Power Amplifier (12-018002) 7-Way Connector Pin-outs
Connector Pin
A1 (large pin)
A2 (large pin)
Signal
+24V DC
GND
Alarm relay common
TTL alarm/0V good
Alarm relay contact (bad)
Alarm relay contact (good)
O/C good/0V bad (TTL)
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Page 307 of 500
17.4.2.9. 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
Frequency range
Bandwidth
Maximum RF output
Gain
1dB compression point
3rd order intercept point
Noise Figure
VSWR
Connectors
Supply
Temperature operational
range
storage
Weight
Size
SPECIFICATION
800-960MHz*
20MHz *
>1.0 Watt
15dB
+30.5dBm
+43dBm
<6dB
better than 1.5:1
SMA female
500mA @ 10-15V DC
-10°C to +60°C
-20°C to +70°C
0.5 kg
167x52x25mm
* Tuned to Customer’s specification
Low Power Amplifier (12-021901) 7-Way Connector Pin-outs
Connector Pin
A1 (large pin)
A2 (large pin)
Signal
+24V DC
GND
Alarm relay common
TTL alarm/0V good
Alarm relay contact (bad)
Alarm relay contact (good)
O/C good/0V bad (TTL)
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7.4.2.10. Automatic Gain Control
17-001109
17-001117
17-001201
AGC Detector Assembly (Logarithmic)
AGC Detector Assembly
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 (no NPSPAC) (55-165705); 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 (no NPSPAC) (55-165705) is fitted with two differing types of Automatic Gain
Control (AGC) system, one linear, and one logarithmic. The AGC with logarithmic detector (17001117) 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 309 of 500
AGC Specification (both types)
PARAMETER
Frequency range
Attenuation range
Attenuation steps
VSWR
RF Connectors
Power
attenuator
handling
detector/amp
Temperature
operation
range
storage
attenuator pcb
Size
detector/amp pcb
attenuator
Weight
detector/amp
SPECIFICATION
up to 1000MHz
3 to 30dB
continuously variable
better than 1.2:1
SMA female
1W
>30W (or as required)
-10°C to +60°C
-20°C to +70°C
50 x 42 x 21mm
54 x 42 x 21mm
90grams
100grams
17.4.2.11. 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
Temperature
operational -10°C to +60°C
range
storage -20°C to +70°C
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17.4.2.12. 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.
17.4.2.13. 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.
96-200047 Specification
PARAMETER
DC Input Voltage range
DC Output voltage
Max. current load
Temperature
Operation
range
Storage
Working Humidity
SPECIFICATION
19 to 36V
12V ± 1%
12.5Amps
-10°C to +60°C
-20°C to +85°C
20 to 90% RHNC
17.4.2.14. 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
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17.4.3.
International Station Splitter (55-165710)
2U Rack mount tray
International Station Splitter (55-165710) List of major Components
Section
17.4.3.3.
17.4.3.4.
17.4.3.5.
Component
Part
05-002602
05-009909
07-015102
Component Part Description
900MHZ SPLITTER/COMBINER, 20W
4 WAY POWER SPLITTER 70/10/10/10
Wideband Asymmetric Coupler
Qty. Per
Assembly
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17.4.3.1. International Station Splitter (55-165710) Outline drawing
Drawing number 55-1657110
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17.4.3.2. International Station Splitter (55-165710) System Diagram
Drawing number 55-165790
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17.4.3.3. 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
Frequency
Narrowband
range
Broadband
Narrowband
Bandwidth
Broadband
Input ports
Output ports
Narrowband
Insertion loss
Broadband
Return loss input & output
Impedance
Narrowband
Isolation
Broadband
MTFB
Splitting
Power rating
Combining
Connectors
Weight
Size
SPECIFICATION
815 – 960MHz
800 – 1200MHz
145MHz
400MHz
3.3dB
3.5dB
1.3:1
50Ω
>20dB
>18dB
>180,000 hours
20Watts
0.5Watt
SMA female
200g (approximately)
54 x 44 x 21mm
17.4.3.4. 05-009909 – BSB to provide spec ***///***
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17.4.3.5. 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
Frequency Range
Coupling Value
Main Line Insertion Loss
VSWR
Directivity
Power Rating
RF Connectors
Temperature
operation
range
storage
SPECIFICATION
800 - 2500 MHz
10 dB ± 1.0 dB
<1.6 dB
1.4:1
>18 dB
200 Watts
‘N’ female
-20°C to +60°C
-40°C to +70°C
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18.
UNIVERSITY STATION CROSS PASSAGE A (80-330590-1)
Wallmount case
number C06-CR-01
University Station Cross Passage A (80-330590-1)
Section
18.3.1.
18.3.2.
18.3.3.
18.3.4.
Component
Part
07-015102
12-018002
55-165701
55-165702
Component Part Description
Wideband Asymmetric Coupler
Power Amplifier
800MHz Line Amplifier
700MHz Line Amplifier
Qty Per
Assembly
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18.1. University Station Cross Passage A (80-330590-1) System Diagram
Drawing number 80-330592-1
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18.2. University Station Cross Passage A (80-330590-1) Alarm Wiring Diagram
Drawing Number 80-330530-1
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18.3. University Station Cross Passage A (80-330590-1) Major Sub Components
18.3.1.
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
Frequency Range
Coupling Value
Main Line Insertion Loss
VSWR
Directivity
Power Rating
RF Connectors
Temperature
operation
range
storage
18.3.2.
SPECIFICATION
800 - 2500 MHz
10 dB ± 1.0 dB
<1.6 dB
1.4:1
>18 dB
200 Watts
‘N’ female
-20°C to +60°C
-40°C to +70°C
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
Frequency range
Small signal gain
Gain flatness
I/O Return loss
1dB compression point
OIP3
Supply voltage
Supply current
Temperature
operational
range
storage
Weight
SPECIFICATION
800-960MHz
30dB
±1.2dB
>18dB
42.8dBm
56dBm
24V DC
5.0Amps (Typical)
-10°C to +60°C
-20°C to +70°C
<2kg (no heatsink)
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Power Amplifier (12-018002) 7-Way Connector Pin-outs
Connector Pin
A1 (large pin)
A2 (large pin)
Signal
+24V DC
GND
Alarm relay common
TTL alarm/0V good
Alarm relay contact (bad)
Alarm relay contact (good)
O/C good/0V bad (TTL)
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18.3.3.
800MHz Line Amplifier (55-165701)
5U rack mount case
800MHz Line Amplifier (55-165701) List of Major Components
Section
18.3.3.3.
18.3.3.4.
18.3.3.5.
18.3.3.6.
18.3.3.7.
18.3.3.8.
18.3.3.9.
18.3.3.10.
18.3.3.11.
18.3.3.12.
Component
Part
02-007206
07-015105
10-000901
11-006702
12-021901
17-001109*
17-001117*
17-001201*
80-008901
94-100004
96-200047
96-300052
Component Part Description
Bandpass Filter
Wideband Asymmetric Coupler
Switched Attenuator 0.25W, 0 - 15dB
Low Noise Amplifier
Low Power Amplifier
AGC Detector Assembly (Logarithmic)
AGC Detector Assembly
AGC Attenuator Assembly
12V (Single) Relay Board
Dual Diode Assembly
DC/DC Converter
12V Switch-Mode PSU
Qty Per
Assembly
*The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control
(AGC) system used in 800MHz Line Amplifier (55-165701); 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
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18.3.3.1. 800MHz Line Amplifier (55-165701) Outline Drawing
Drawing number 55-1657101
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18.3.3.2. 800MHz Line Amplifier (55-165701) System Diagram
Drawing number 55-165781
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18.3.3.3. 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
Response type
Frequency range
Bandwidth
Number of sections
Insertion loss
VSWR
Connectors
Power handling
Temperature
operation
range
storage
Weight
SPECIFICATION
Chebyshev
800 - 950MHz *
25MHz *
1.2 dB
better than 1.2:1
SMA female
100W max
-20°C to +60°C
-40°C to +70°C
3 kg (typical)
*tuned to Customer's specification
18.3.3.4. 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
Construction
Frequency
Through loss
Coupling level
Isolation
Weight
Connectors
Temperature
operation
range
storage
SPECIFICATION
Inductive air gap
800-2500MHz
0.4dB (typical)
-30dB ±0.5dB
N/A
<1.0kg
SMA, female
-20°C to +60°C
-40°C to +70°C
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18.3.3.5. 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
Attenuation Values
Attenuation Steps
Power Handling
Attenuation Accuracy
Frequency Range
Impedance
Connectors
VSWR
Weigh
Temperature operation
range
storage
SPECIFICATION
0-15dB
1, 2, 4 and 8dB
0.25 Watt
± 1.0 dB
DC to 1GHz
50Ω
SMA
1.3:1
0.2kg
-20°C to +60°C
-40°C to +70°C
18.3.3.6. 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
Frequency range
Bandwidth
Gain
1dB Compression point
OIP3
Input/Output return loss
Noise figure
Power consumption
Supply voltage
Connectors
operational
Temperature range:
storage
Size
Weight
SPECIFICATION
800 – 1000MHz
<200MHz
29dB (typical)
20dBm
33dBm
>18dB
1.3dB (typical)
180mA @ 24V DC
10-24V DC
SMA female
-10°C to +60°C
-20°C to +70°C
90 x 55 x 30.2mm
290gms (approximately)
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Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details
Connector pin
Signal
+Ve input (10-24V)
GND
Alarm RelayO/P bad
Alarm Relay common
Alarm Relay good
No connection
TTL voltage set
TTL alarm/0V (good)
O/C good/0V bad
9-Way Pin-Out Graphical Representation
18.3.3.7. 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
Frequency range
Bandwidth
Maximum RF output
Gain
1dB compression point
3rd order intercept point
Noise Figure
VSWR
Connectors
Supply
Temperature operational
range
storage
Weight
Size
SPECIFICATION
800-960MHz*
20MHz *
>1.0 Watt
15dB
+30.5dBm
+43dBm
<6dB
better than 1.5:1
SMA female
500mA @ 10-15V DC
-10°C to +60°C
-20°C to +70°C
0.5 kg
167x52x25mm
* Tuned to Customer’s specification
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Low Power Amplifier (12-021901) 7-Way Connector Pin-outs
Connector Pin
A1 (large pin)
A2 (large pin)
18.3.3.8.
17-001109
17-001117
17-001201
Signal
+24V DC
GND
Alarm relay common
TTL alarm/0V good
Alarm relay contact (bad)
Alarm relay contact (good)
O/C good/0V bad (TTL)
Automatic Gain Control
AGC Detector Assembly (Logarithmic)
AGC Detector Assembly
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 (55-165701); 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 (55-165701) 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.
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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.
AGC Specification (both types)
PARAMETER
Frequency range
Attenuation range
Attenuation steps
VSWR
RF Connectors
Power
attenuator
handling
detector/amp
Temperature
operation
range
storage
attenuator pcb
Size
detector/amp pcb
attenuator
Weight
detector/amp
SPECIFICATION
up to 1000MHz
3 to 30dB
continuously variable
better than 1.2:1
SMA female
1W
>30W (or as required)
-10°C to +60°C
-20°C to +70°C
50 x 42 x 21mm
54 x 42 x 21mm
90grams
100grams
18.3.3.9. 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.
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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
Temperature
operational -10°C to +60°C
range
storage -20°C to +70°C
18.3.3.10. 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.
18.3.3.11. 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
DC Input Voltage range
DC Output voltage
Max. current load
Temperature
Operation
range
Storage
Working Humidity
SPECIFICATION
19 to 36V
12V ± 1%
12.5Amps
-10°C to +60°C
-20°C to +85°C
20 to 90% RHNC
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18.3.3.12. 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
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
Voltage
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18.3.4.
700MHz Line Amplifier (55-165702)
5U rack mount case
700MHz Line Amplifier (55-165702) List of Major Components
Section
18.3.4.3.
18.3.4.4.
18.3.4.5.
18.3.4.6.
18.3.4.7.
18.3.4.8.
18.3.4.9.
18.3.4.0.
18.3.4.11.
18.3.4.12.
Component
Part
02-007206
07-015105
10-000901
11-006702
12-021901
17-001109*
17-001117*
17-001201*
80-008901
94-100004
96-200047
96-300052
Component Part Description
Bandpass Filter
Wideband Asymmetric Coupler
Switched Attenuator 0.25W, 0 - 15dB
Low Noise Amplifier
Low Power Amplifier
AGC Detector Assembly (Logarithmic)
AGC Detector Assembly
AGC Attenuator Assembly
12V (Single) Relay Board
Dual Diode Assembly
DC/DC Converter
12V Switch-Mode PSU
Qty Per
Assembly
*The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control
(AGC) system used in 700MHz Line Amplifier (55-165702); 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
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18.3.4.1.
700MHz Line Amplifier (55-165702) Outline Drawing
Drawing Number 55-1657102
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18.3.4.2. 700MHz Line Amplifier (55-165702) System Diagram
Drawing Number 55-165782
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18.3.4.3. 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
Response type
Frequency range
Bandwidth
Number of sections
Insertion loss
VSWR
Connectors
Power handling
Temperature
operation
range
storage
Weight
SPECIFICATION
Chebyshev
800 - 950MHz *
25MHz *
1.2 dB
better than 1.2:1
SMA female
100W max
-20°C to +60°C
-40°C to +70°C
3 kg (typical)
*tuned to Customer's specification
18.3.4.4. 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
Construction
Frequency
Through loss
Coupling level
Isolation
Weight
Connectors
Temperature
operation
range
storage
SPECIFICATION
Inductive air gap
800-2500MHz
0.4dB (typical)
-30dB ±0.5dB
N/A
<1.0kg
SMA, female
-20°C to +60°C
-40°C to +70°C
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18.3.4.5. 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
Attenuation Values
Attenuation Steps
Power Handling
Attenuation Accuracy
Frequency Range
Impedance
Connectors
VSWR
Weigh
Temperature operation
range
storage
SPECIFICATION
0-15dB
1, 2, 4 and 8dB
0.25 Watt
± 1.0 dB
DC to 1GHz
50Ω
SMA
1.3:1
0.2kg
-20°C to +60°C
-40°C to +70°C
18.3.4.6. 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
Frequency range
Bandwidth
Gain
1dB Compression point
OIP3
Input/Output return loss
Noise figure
Power consumption
Supply voltage
Connectors
operational
Temperature range:
storage
Size
Weight
SPECIFICATION
800 – 1000MHz
<200MHz
29dB (typical)
20dBm
33dBm
>18dB
1.3dB (typical)
180mA @ 24V DC
10-24V DC
SMA female
-10°C to +60°C
-20°C to +70°C
90 x 55 x 30.2mm
290gms (approximately)
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Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details
Connector pin
Signal
+Ve input (10-24V)
GND
Alarm RelayO/P bad
Alarm Relay common
Alarm Relay good
No connection
TTL voltage set
TTL alarm/0V (good)
O/C good/0V bad
9-Way Pin-Out Graphical Representation
18.3.4.7. 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
Frequency range
Bandwidth
Maximum RF output
Gain
1dB compression point
3rd order intercept point
Noise Figure
VSWR
Connectors
Supply
Temperature operational
range
storage
Weight
Size
SPECIFICATION
800-960MHz*
20MHz *
>1.0 Watt
15dB
+30.5dBm
+43dBm
<6dB
better than 1.5:1
SMA female
500mA @ 10-15V DC
-10°C to +60°C
-20°C to +70°C
0.5 kg
167x52x25mm
* Tuned to Customer’s specification
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Low Power Amplifier (12-021901) 7-Way Connector Pin-outs
Connector Pin
A1 (large pin)
A2 (large pin)
18.3.4.8.
17-001109
17-001117
17-001201
Signal
+24V DC
GND
Alarm relay common
TTL alarm/0V good
Alarm relay contact (bad)
Alarm relay contact (good)
O/C good/0V bad (TTL)
Automatic Gain Control
AGC Detector Assembly (Logarithmic)
AGC Detector Assembly
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 (55-165702); 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 (55-165702) 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.
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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.
AGC Specification (both types)
PARAMETER
Frequency range
Attenuation range
Attenuation steps
VSWR
RF Connectors
Power
attenuator
handling
detector/amp
Temperature
operation
range
storage
attenuator pcb
Size
detector/amp pcb
attenuator
Weight
detector/amp
SPECIFICATION
up to 1000MHz
3 to 30dB
continuously variable
better than 1.2:1
SMA female
1W
>30W (or as required)
-10°C to +60°C
-20°C to +70°C
50 x 42 x 21mm
54 x 42 x 21mm
90grams
100grams
18.3.4.9. 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.
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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
Temperature
operational -10°C to +60°C
range
storage -20°C to +70°C
18.3.4.10. 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.
18.3.4.11. 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
DC Input Voltage range
DC Output voltage
Max. current load
Temperature
Operation
range
Storage
Working Humidity
SPECIFICATION
19 to 36V
12V ± 1%
12.5Amps
-10°C to +60°C
-20°C to +85°C
20 to 90% RHNC
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18.3.4.12. 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
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
Voltage
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19.
UNIVERSITY STATION CROSS PASSAGE B (80-330590-2)
Wallmount case
number C06-CR-02
University Station Cross Passage B (80-330590-2)
Section
19.3.1.
19.3.2.
19.3.3.
19.3.4.
Component
Part
07-015102
12-018002
55-165701
55-165702
Component Part Description
Wideband Asymmetric Coupler
Power Amplifier
800MHz Line Amplifier
700MHz Line Amplifier
Qty Per
Assembly
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19.1. University Station Cross Passage B (80-330590-2) System Diagram
Drawing number 80-330592-2
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Page 343 of 500
19.2. University Station Cross Passage B (80-330590-2) Alarm Wiring Diagram
Drawing Number 80-330530-2
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Page 344 of 500
19.3. University Station Cross Passage B (80-330590-2) Major Sub Components
19.3.1.
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
Frequency Range
Coupling Value
Main Line Insertion Loss
VSWR
Directivity
Power Rating
RF Connectors
Temperature
operation
range
storage
19.3.2.
SPECIFICATION
800 - 2500 MHz
10 dB ± 1.0 dB
<1.6 dB
1.4:1
>18 dB
200 Watts
‘N’ female
-20°C to +60°C
-40°C to +70°C
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
Frequency range
Small signal gain
Gain flatness
I/O Return loss
1dB compression point
OIP3
Supply voltage
Supply current
Temperature
operational
range
storage
Weight
SPECIFICATION
800-960MHz
30dB
±1.2dB
>18dB
42.8dBm
56dBm
24V DC
5.0Amps (Typical)
-10°C to +60°C
-20°C to +70°C
<2kg (no heatsink)
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Power Amplifier (12-018002) 7-Way Connector Pin-outs
Connector Pin
A1 (large pin)
A2 (large pin)
Signal
+24V DC
GND
Alarm relay common
TTL alarm/0V good
Alarm relay contact (bad)
Alarm relay contact (good)
O/C good/0V bad (TTL)
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Page 346 of 500
19.3.3.
800MHz Line Amplifier (55-165701)
5U rack mount case
800MHz Line Amplifier (55-165701) List of Major Components
Section
19.3.3.3.
19.3.3.4.
19.3.3.5.
19.3.3.6.
19.3.3.7.
19.3.3.8.
19.3.3.9.
19.3.3.10.
19.3.3.11.
19.3.3.12.
Component
Part
02-007206
07-015105
10-000901
11-006702
12-021901
17-001109
17-001117
17-001201
80-008901
94-100004
96-200047
96-300052
Component Part Description
Bandpass Filter
Wideband Asymmetric Coupler
Switched Attenuator 0.25W, 0 - 15dB
Low Noise Amplifier
Low Power Amplifier
AGC Detector Assembly (Logarithmic)
AGC Detector Assembly
AGC Attenuator Assembly
12V (Single) Relay Board
Dual Diode Assembly
DC/DC Converter
12V Switch-Mode PSU
Qty Per
Assembly
*The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control
(AGC) system used in 800MHz Line Amplifier (55-165701); 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
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19.3.3.1. 800MHz Line Amplifier (55-165701) Outline Drawing
Drawing number 55-1657101
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Page 348 of 500
19.3.3.2. 800MHz Line Amplifier (55-165701) System Diagram
Drawing number 55-165781
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19.3.3.3. 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
Response type
Frequency range
Bandwidth
Number of sections
Insertion loss
VSWR
Connectors
Power handling
Temperature
operation
range
storage
Weight
SPECIFICATION
Chebyshev
800 - 950MHz *
25MHz *
1.2 dB
better than 1.2:1
SMA female
100W max
-20°C to +60°C
-40°C to +70°C
3 kg (typical)
*tuned to Customer's specification
19.3.3.4. 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
Construction
Frequency
Through loss
Coupling level
Isolation
Weight
Connectors
Temperature
operation
range
storage
SPECIFICATION
Inductive air gap
800-2500MHz
0.4dB (typical)
-30dB ±0.5dB
N/A
<1.0kg
SMA, female
-20°C to +60°C
-40°C to +70°C
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19.3.3.5. 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
Attenuation Values
Attenuation Steps
Power Handling
Attenuation Accuracy
Frequency Range
Impedance
Connectors
VSWR
Weigh
Temperature operation
range
storage
SPECIFICATION
0-15dB
1, 2, 4 and 8dB
0.25 Watt
± 1.0 dB
DC to 1GHz
50Ω
SMA
1.3:1
0.2kg
-20°C to +60°C
-40°C to +70°C
19.3.3.6. 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
Frequency range
Bandwidth
Gain
1dB Compression point
OIP3
Input/Output return loss
Noise figure
Power consumption
Supply voltage
Connectors
operational
Temperature range:
storage
Size
Weight
SPECIFICATION
800 – 1000MHz
<200MHz
29dB (typical)
20dBm
33dBm
>18dB
1.3dB (typical)
180mA @ 24V DC
10-24V DC
SMA female
-10°C to +60°C
-20°C to +70°C
90 x 55 x 30.2mm
290gms (approximately)
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Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details
Connector pin
Signal
+Ve input (10-24V)
GND
Alarm RelayO/P bad
Alarm Relay common
Alarm Relay good
No connection
TTL voltage set
TTL alarm/0V (good)
O/C good/0V bad
9-Way Pin-Out Graphical Representation
19.3.3.7. 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
Frequency range
Bandwidth
Maximum RF output
Gain
1dB compression point
3rd order intercept point
Noise Figure
VSWR
Connectors
Supply
Temperature operational
range
storage
Weight
Size
SPECIFICATION
800-960MHz*
20MHz *
>1.0 Watt
15dB
+30.5dBm
+43dBm
<6dB
better than 1.5:1
SMA female
500mA @ 10-15V DC
-10°C to +60°C
-20°C to +70°C
0.5 kg
167x52x25mm
* Tuned to Customer’s specification
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 352 of 500
Low Power Amplifier (12-021901) 7-Way Connector Pin-outs
Connector Pin
A1 (large pin)
A2 (large pin)
19.3.3.8.
17-001109
17-001117
17-001201
Signal
+24V DC
GND
Alarm relay common
TTL alarm/0V good
Alarm relay contact (bad)
Alarm relay contact (good)
O/C good/0V bad (TTL)
Automatic Gain Control
AGC Detector Assembly (Logarithmic)
AGC Detector Assembly
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 (55-165701); 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 (55-165701) 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.
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Page 353 of 500
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.
AGC Specification (both types)
PARAMETER
Frequency range
Attenuation range
Attenuation steps
VSWR
RF Connectors
Power
attenuator
handling
detector/amp
Temperature
operation
range
storage
attenuator pcb
Size
detector/amp pcb
attenuator
Weight
detector/amp
SPECIFICATION
up to 1000MHz
3 to 30dB
continuously variable
better than 1.2:1
SMA female
1W
>30W (or as required)
-10°C to +60°C
-20°C to +70°C
50 x 42 x 21mm
54 x 42 x 21mm
90grams
100grams
19.3.3.9. 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.
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 354 of 500
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
Temperature
operational -10°C to +60°C
range
storage -20°C to +70°C
19.3.3.10. 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.
19.3.3.11. 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
DC Input Voltage range
DC Output voltage
Max. current load
Temperature
Operation
range
Storage
Working Humidity
SPECIFICATION
19 to 36V
12V ± 1%
12.5Amps
-10°C to +60°C
-20°C to +85°C
20 to 90% RHNC
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 355 of 500
19.3.3.12. 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
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
Voltage
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 356 of 500
19.3.4.
700MHz Line Amplifier (55-165702)
5U rack mount case
700MHz Line Amplifier (55-165702) List of Major Components
Section
19.3.4.3.
19.3.4.4.
19.3.4.5.
19.3.4.6.
19.3.4.7.
19.3.4.8.
19.3.4.9.
19.3.4.10.
19.3.4.11.
19.3.4.12.
Component
Part
02-007206
07-015105
10-000901
11-006702
12-021901
17-001109*
17-001117*
17-001201*
80-008901
94-100004
96-200047
96-300052
Component Part Description
900MHZ 8POLE 25MHz+ B/W "SMA"
ASYMMETRIC CPLR 30dB 800-2500MHz GA
SW ATT 0-15dB 0.25W SMA F
800-1000MHz LNA 29dB (cw RELAY) KIT
Low Power Amplifier
AGC Detector Assembly (Logarithmic)
AGC Detector Assembly
AGC Attenuator Assembly
12V RELAY PCB ASSEMBLY
STPS12045TV 60A DUAL DIODE
DC/DC Converter
JWS150-12/A PSU (COUTANT LAMBDA)
Qty Per
Assembly
*The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control
(AGC) system used in 700MHz Line Amplifier (55-165702); 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 357 of 500
19.3.4.1. 700MHz Line Amplifier (55-165702) Outline Drawing
Drawing Number 55-1657102
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 358 of 500
19.3.4.2. 700MHz Line Amplifier (55-165702) System Diagram
Drawing Number 55-165782
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 359 of 500
19.3.4.3. 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
Response type
Frequency range
Bandwidth
Number of sections
Insertion loss
VSWR
Connectors
Power handling
Temperature
operation
range
storage
Weight
SPECIFICATION
Chebyshev
800 - 950MHz *
25MHz *
1.2 dB
better than 1.2:1
SMA female
100W max
-20°C to +60°C
-40°C to +70°C
3 kg (typical)
*tuned to Customer's specification
19.3.4.4. 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
Construction
Frequency
Through loss
Coupling level
Isolation
Weight
Connectors
Temperature
operation
range
storage
SPECIFICATION
Inductive air gap
800-2500MHz
0.4dB (typical)
-30dB ±0.5dB
N/A
<1.0kg
SMA, female
-20°C to +60°C
-40°C to +70°C
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 360 of 500
19.3.4.5. 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
Attenuation Values
Attenuation Steps
Power Handling
Attenuation Accuracy
Frequency Range
Impedance
Connectors
VSWR
Weigh
Temperature operation
range
storage
SPECIFICATION
0-15dB
1, 2, 4 and 8dB
0.25 Watt
± 1.0 dB
DC to 1GHz
50Ω
SMA
1.3:1
0.2kg
-20°C to +60°C
-40°C to +70°C
19.3.4.6. 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
Frequency range
Bandwidth
Gain
1dB Compression point
OIP3
Input/Output return loss
Noise figure
Power consumption
Supply voltage
Connectors
operational
Temperature range:
storage
Size
Weight
SPECIFICATION
800 – 1000MHz
<200MHz
29dB (typical)
20dBm
33dBm
>18dB
1.3dB (typical)
180mA @ 24V DC
10-24V DC
SMA female
-10°C to +60°C
-20°C to +70°C
90 x 55 x 30.2mm
290gms (approximately)
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 361 of 500
Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details
Connector pin
Signal
+Ve input (10-24V)
GND
Alarm RelayO/P bad
Alarm Relay common
Alarm Relay good
No connection
TTL voltage set
TTL alarm/0V (good)
O/C good/0V bad
9-Way Pin-Out Graphical Representation
19.3.4.7. 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
Frequency range
Bandwidth
Maximum RF output
Gain
1dB compression point
3rd order intercept point
Noise Figure
VSWR
Connectors
Supply
Temperature operational
range
storage
Weight
Size
SPECIFICATION
800-960MHz*
20MHz *
>1.0 Watt
15dB
+30.5dBm
+43dBm
<6dB
better than 1.5:1
SMA female
500mA @ 10-15V DC
-10°C to +60°C
-20°C to +70°C
0.5 kg
167x52x25mm
* Tuned to Customer’s specification
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 362 of 500
Low Power Amplifier (12-021901) 7-Way Connector Pin-outs
Connector Pin
A1 (large pin)
A2 (large pin)
19.3.4.8.
17-001109
17-001117
17-001201
Signal
+24V DC
GND
Alarm relay common
TTL alarm/0V good
Alarm relay contact (bad)
Alarm relay contact (good)
O/C good/0V bad (TTL)
Automatic Gain Control
AGC Detector Assembly (Logarithmic)
AGC Detector Assembly
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 (55-165702); 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 (55-165702) 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.
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 363 of 500
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.
AGC Specification (both types)
PARAMETER
Frequency range
Attenuation range
Attenuation steps
VSWR
RF Connectors
Power
attenuator
handling
detector/amp
Temperature
operation
range
storage
attenuator pcb
Size
detector/amp pcb
attenuator
Weight
detector/amp
SPECIFICATION
up to 1000MHz
3 to 30dB
continuously variable
better than 1.2:1
SMA female
1W
>30W (or as required)
-10°C to +60°C
-20°C to +70°C
50 x 42 x 21mm
54 x 42 x 21mm
90grams
100grams
19.3.4.9. 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.
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 364 of 500
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
Temperature
operational -10°C to +60°C
range
storage -20°C to +70°C
19.3.4.10. 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.
19.3.4.11. 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
DC Input Voltage range
DC Output voltage
Max. current load
Temperature
Operation
range
Storage
Working Humidity
SPECIFICATION
19 to 36V
12V ± 1%
12.5Amps
-10°C to +60°C
-20°C to +85°C
20 to 90% RHNC
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 365 of 500
19.3.4.12. 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
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
Voltage
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 366 of 500
20
CONVENTION PLACE STATION 700MHZ BDA (80-330554-1)
Rack number CR1-CR-06
Convention Place Station 700MHz BDA (80-330554-1) List of major Components
Section
20.3.1.
20.3.2.
20.3.3.
Component
Part
50-132103
50-132105
50-132106
Component Part Description
700MHz Output Duplexer/Combiner
700MHz 5 Cavity Combiner System
700MHz 4 Cavity Combiner System
Qty Per
Assembly
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 367 of 500
20.1 Convention Place Station 700MHz BDA (80-330554-1) Outline Drawing
Drawing number 80-330554
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 368 of 500
20.2. Convention Place Station 700MHz BDA (80-330554-1) System Diagram
Drawing number 80-330584-1
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 369 of 500
20.3 Convention Place Station 700MHz BDA (80-330554-1) Major Components
20.3.1.
700MHz Output Duplexer/Combiner (50-132103)
3U rack mount tray
700MHz Output Duplexer/Combiner (50-132103) List of Major Components
Section
20.3.1.3.
20.3.1.4.
20.3.1.5.
20.3.1.6.
Component
Part
02-007206
05-003007
07-015105
09-000902
Component Part Description
Bandpass Filter
4 Port Hybrid Coupler
Wideband Asymmetric Coupler
Dummy Load
Qty Per
Assembly
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 370 of 500
20.3.1.1. 700MHz Output Duplexer/Combiner (50-132103) outline drawing
Drawing number 50-1321103
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 371 of 500
20.3.1.2. 700MHz Output Duplexer/Combiner (50-132103) system diagram
Drawing number 50-132183
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 372 of 500
20.3.1.3. 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
Response type
Frequency range
Bandwidth
Number of sections
Insertion loss
VSWR
Connectors
Power handling
Temperature
operation
range
storage
Weight
SPECIFICATION
Chebyshev
800 - 950MHz *
25MHz *
1.2 dB
better than 1.2:1
SMA female
100W max
-20°C to +60°C
-40°C to +70°C
3 kg (typical)
*tuned to Customer's specification
20.3.1.4. 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
Frequency range
Bandwidth
Rejection
Insertion loss
Connectors
Weight
Temperature operational
range
storage
SPECIFICATION
700-900MHz
200MHz
>14dB
6.5dB (in band, typical)
SMA
<1.0kg
-10%C to +60%C
-20%C to +70%C
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 373 of 500
20.3.1.5. 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
Construction
Frequency
Through loss
Coupling level
Isolation
Weight
Connectors
Temperature
operation
range
storage
SPECIFICATION
Inductive air gap
800-2500MHz
0.4dB (typical)
-30dB ±0.5dB
N/A
<1.0kg
SMA, female
-20°C to +60°C
-40°C to +70°C
20.3.1.6. 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 an
appropriate Dummy Load in order to preserve the correct impedance of the device over the specified
frequency range.
09-000902 specification
PARAMETER
Frequency Range
Power Rating
VSWR
Impedance
Temperature Range
RF Connectors
Dimension
Weight
Finish
RF Connector
Environmental
MTBF
SPECIFICATION
0 - 2500 MHz
25 Watts continuous
Better than 1.1:1
50 Ohms
-20 to +60°C
N Type female
110.3mm x 38.1mm x
485 grams
Black Anodised
N Type male
IP66
>180,000 hours
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 374 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
20.3.2.3.
Component
Part
04-003402
Component Part Description
Dielectric Cavity Resonator
Qty Per
Assembly
STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft
Page 375 of 500

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