Axell Wireless 55-165703, 55-165704 User Manual

14.3.5. Attenuator 25W, 60dB (10-002960)

In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive. Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the gain. Attenuator 25W, 60dB (10-002960) is a fixed attenuator providing 60dB of signal attenuation.

10-002960 Specification

PARAMETER SPECIFICATION

Frequency Range DC to 2.5GHz

Power Handling 25 W

Attenuation 60 dB

Attenuation Accuracy ± 0.5dB

Return Loss to 2.2GHz 18dB

Nominal Impedance 50 Ω

RF Conectors N male to N female

Finish Matt Black Anodise

Temperature

range

operational -20%C to +55%C

storage -20%C to +70%C

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 250 of 500

15 ATTENUATOR SHELF (ITAC) 3 (55-165506)

Attenuator Shelf (ITAC) 3 (55-165506) list of major components

Section Component

Part

15.3.1. 05-002602 900MHz Splitter/Combiner 1

15.3.2. 05-003007 4 Port Hybrid Coupler 1

15.3.3. 09-000902 Dummy load 1

15.3.4. 10-000901 Switched Attenuator 0.25W, 0 - 15dB 1

15.3.5. 10-002960 Attenuator 25W, 60dB 1

Component Part Description Qty. Per

Assembly

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 251 of 500

15.1. Attenuator Shelf (ITAC) 3 (55-165506) outline drawing

Drawing number 55-1655106

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 252 of 500

15.2 Attenuator Shelf (ITAC) 3 (55-165506) system diagram

Drawing number 55-165586

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 253 of 500

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 SPECIFICATION

Narrowband 815 – 960MHz Frequency

range

Bandwidth

Insertion loss

Return loss input & output 1.3:1

Isolation

Power rating

Broadband 800 – 1200MHz

Narrowband 145MHz

Broadband 400MHz

Input ports 1 Output ports 2 Narrowband 3.3dB

Broadband 3.5dB Impedance 50Ω

Narrowband >20dB

Broadband >18dB

MTFB >180,000 hours

Splitting 20Watts

Combining 0.5Watt

Connectors SMA female

Weight 200g (approximately)

Size 54 x 44 x 21mm

15.3.2. 4 Port Hybrid Coupler (05-003007)

This transmitter hybrid coupler is a device for accurately matching two or more RF signals to single or multiple ports, whilst maintaining an accurate 50Ω load to all inputs/outputs and ensuring that the insertion losses are kept to a minimum. Any unused ports should be terminated with an appropriate 50Ω load. In this specific instance one port of 4 Port Hybrid Coupler (05-003007) is terminated with Dummy load 09-000902 (see below).

05-003007 Specification

PARAMETER SPECIFICATION

Frequency range: 700-900MHz

Bandwidth: 200MHz

Rejection: >14dB

Insertion loss: 6.5dB (in band, typical)

Connectors: SMA

Weight: <1.0kg

Temperature

range:

operational:-10%C to +60%C

storage -20%C to +70%C

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 254 of 500

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 SPECIFICATION

Frequency Range 0 - 2500 MHz

Power Rating 25 Watts continuous

VSWR Better than 1.1:1

Impedance 50 Ohms

Temperature Range -20 to +60°C

RF Connectors N Type female

Dimension 110.3mm x 38.1mm x

Weight 485 grams

Finish Black Anodised

RF Connector N Type male

Environmental IP66

MTBF >180,000 hours

15.3.4. Switched Attenuator 0.25W, 0 - 15dB (10-000901)

In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive. Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the gain.

10-000901 provides attenuation from 0 - 15dB in 2 dB steps The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50Ω impedance over their operating frequency at both input and output.

10-000901 Specification

PARAMETER SPECIFICATION

Attenuation Values 0-15dB

Attenuation Steps 1, 2, 4 and 8dB

Power Handling 0.25 Watt

Attenuation Accuracy ± 1.0 dB

Frequency Range DC to 1GHz

Impedance 50Ω

Connectors SMA

VSWR 1.3:1

Weight 0.2kg

operation -20°C to +60°C Temperature

range

storage -40°C to +70°C

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 255 of 500

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 SPECIFICATION

Frequency Range DC to 2.5GHz

Power Handling 25 W

Attenuation 60 dB

Attenuation Accuracy ± 0.5dB

Return Loss to 2.2GHz 18dB

Nominal Impedance 50 Ω

RF Conectors N male to N female

Finish Matt Black Anodise

Temperature

range

operational -20%C to +55%C

storage -20%C to +70%C

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 256 of 500

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 Component

Part

16.3.1. 55-165703 800MHz Line Amplifier 1

16.3.2. 55-165704 700MHz LINE AMP + FILTERS (INT AMP) 1

16.3.3. 55-165709 Convention Place Station Splitter 1

Component Part Description 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 Component

Part

16.4.1.3. 02-007206 Bandpass Filter 4

16.4.1.4. 07-015105 Wideband Asymmetric Coupler 1

16.4.1.5. 10-000901 Switched Attenuator 0.25W, 0 - 15dB 2

16.4.1.6. 11-006702 Low Noise Amplifier 1

16.4.1.7. 12-018002 Power Amplifier (20W 800MHz ) 1

16.4.1.8. 12-021901 Low Power Amplifier 2

16.4.1.9.

16.4.1.10. 20-001601 12V (Dual) Relay Board 1

16.4.1.11. 80-008901 12V (Single) Relay Board 1

16.4.1.12. 94-100004 Dual Diode Assembly 1

16.4.1.13. 96-200047 DC/DC Converter 1

16.4.1.14. 96-300052 12V Switch-Mode PSU 1

*The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control (AGC) system used in 800MHz Line Amplifier (55-165703); 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink

17-001109* AGC Detector Assembly (Logarithmic) 1 17-001117* AGC Detector Assembly 1 17-001201* AGC Attenuator Assembly 2

Component Part Description Qty. Per

Assembly

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 261 of 500

16.4.1.1. 800MHz Line Amplifier (55-165703) Outline Drawing

Drawing number 55-1657103

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 262 of 500

16.4.1.2. 800MHz Line Amplifier (55-165703) System Diagram

Drawing number 55-165783

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 263 of 500

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 SPECIFICATION

Response type Chebyshev

Frequency range 800 - 950MHz *

Bandwidth 25MHz *

Number of sections 8

Insertion loss 1.2 dB

VSWR better than 1.2:1

Connectors SMA female

Power handling 100W max

operation -20°C to +60°C Temperature

range

storage -40°C to +70°C

Weight 3 kg (typical)

*tuned to Customer's specification

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 SPECIFICATION

Construction Inductive air gap

Frequency 800-2500MHz

Through loss 0.4dB (typical)

Coupling level -30dB ±0.5dB

Isolation N/A

Weight <1.0kg

Connectors SMA, female

Temperature

range

operation

storage

-20°C to +60°C

-40°C to +70°C

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 264 of 500

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 SPECIFICATION

Attenuation Values 0-15dB

Attenuation Steps 1, 2, 4 and 8dB

Power Handling 0.25 Watt

Attenuation Accuracy ± 1.0 dB

Frequency Range DC to 1GHz

Impedance 50Ω

Connectors SMA

VSWR 1.3:1

Weigh 0.2kg

operation -20°C to +60°C Temperature

range

storage -40°C to +70°C

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 SPECIFICATION

Frequency range: 800 – 1000MHz

Bandwidth: <200MHz

Gain: 29dB (typical)

1dB Compression point: 20dBm

OIP3: 33dBm

Input/Output return loss: >18dB

Noise figure: 1.3dB (typical)

Power consumption: 180mA @ 24V DC

Supply voltage: 10-24V DC

Connectors: SMA female

Temperature range:

operational: -10°C to +60°C

storage: -20°C to +70°C

Size: 90 x 55 x 30.2mm

Weight: 290gms (approximately)

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 265 of 500

Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details

Connector pin Signal

1 +Ve input (10-24V) 2 GND 3 Alarm RelayO/P bad 4 Alarm Relay common 5 Alarm Relay good 6 No connection 7 TTL voltage set 8 TTL alarm/0V (good) 9 O/C good/0V bad

9-Way Pin-Out Graphical Representation

1 2 3 4 5

7 8 96

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 SPECIFICATION

Frequency range: 800-960MHz Small signal gain: 30dB

Gain flatness: ±1.2dB

I/O Return loss: >18dB

1dB compression point: 42.8dBm

OIP3: 56dBm

Supply voltage: 24V DC

Supply current: 5.0Amps (Typical)

operational: -10°C to +60°C Temperature

range

storage: -20°C to +70°C

Weight: <2kg (no heatsink)

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 266 of 500

Power Amplifier (12-018002) 7-Way Connector Pin-outs

Connector Pin Signal

A1 (large pin) +24V DC A2 (large pin) GND

1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL)

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 SPECIFICATION

Frequency range 800-960MHz*

Bandwidth 20MHz *

Maximum RF output >1.0 Watt

Gain 15dB

1dB compression point +30.5dBm

3rd order intercept point +43dBm

Noise Figure <6dB

VSWR better than 1.5:1

Connectors SMA female

Supply 500mA @ 10-15V DC

Temperature

range

operational

storage

Weight 0.5 kg

Size 167x52x25mm

-10°C to +60°C

-20°C to +70°C

* Tuned to Customer’s specification

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 267 of 500

Low Power Amplifier (12-021901) 7-Way Connector Pin-outs

Connector Pin Signal

A1 (large pin) +24V DC A2 (large pin) GND

1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL)

16.4.1.9. Automatic Gain Control

17-001109 AGC Detector Assembly (Logarithmic) 17-001117 AGC Detector Assembly 17-001201 AGC Attenuator Assembly

The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control (AGC) system used in 800MHz Line Amplifier (55-165703); 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink

800MHz Line Amplifier (55-165703) is fitted with two differing types of Automatic Gain Control (AGC) system, one linear, and one logarithmic. The AGC with logarithmic detector (17-001117) is fitted in the uplink path and the AGC with linear detector (17-001109) is fitted in the downlink path

The AFL Automatic Gain Control system consists of two units, a detector/amplifier and an attenuator. The detector/amplifier unit is inserted in the RF path on the output of the power amplifier, and the attenuator is situated in the RF path between the 1st and 2nd stages of amplification. 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink

The attenuator comprises a 50Ω P.I.N diode, voltage-variable attenuator with a range of 3 to 30dB. The attenuation is controlled by a DC voltage which is derived from the associated detector controller board.

Normally the attenuator is at minimum attenuation. The detector/amplifier unit monitors the RF level being delivered by the power amplifier, and when a certain threshold is reached it begins to increase the value of the attenuator to limit the RF output to the (factory set) threshold. Therefore overloading of the power amplifier is avoided.

The factory set threshold is 1dB below the Enhancer 1dB compression point. Some adjustment of this AGC threshold level is possible, a 10dB range is mostly achieved. It is not recommended under any circumstances to adjust the AGC threshold to a level greater than the 1dB compression point as system degradation will occur.

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 268 of 500

The detector comprises of a 50Ω transmission line with a resistive tap which samples a small portion of the mainline power. The sampled signal is amplified and fed to a conventional half wave diode rectifier, the output of which is a DC voltage proportional to the RF input signal.

This DC voltage is passed via an inverting DC amplifier with integrating characteristics, to the output, which drives the attenuation control line of the corresponding AGC attenuator. This unit is fitted at some earlier point in the RF circuit.

For small signals, below AGC onset, the output control line will be close to 12V and the AGC attenuator will have minimum attenuation. As the signal level increases the control line voltage will fall, increasing the attenuator value and keeping the system output level at a constant value.

AGC Specification (both types)

PARAMETER SPECIFICATION

Frequency range up to 1000MHz

Attenuation range 3 to 30dB

Attenuation steps continuously variable

VSWR better than 1.2:1

RF Connectors SMA female

attenuator 1W Power

handling

detector/amp >30W (or as required)

operation -10°C to +60°C Temperature

range

Size

Weight

attenuator pcb 50 x 42 x 21mm

detector/amp pcb 54 x 42 x 21mm

storage -20°C to +70°C

attenuator 90grams

detector/amp 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:

>2x10

Relay approval: BT type 56

Connector details: Screw terminals

operational: -10°C to +60°C Temperature

range

storage: -20°C to +70°C

7

operations

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 269 of 500

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

operational -10°C to +60°C Temperature

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.

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 270 of 500

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 SPECIFICATION

DC Input Voltage range 19 to 36V

DC Output voltage 12V ± 1%

Max. current load 12.5Amps

Operation -10°C to +60°C Temperature

range

Working Humidity 20 to 90% RHNC

Storage -20°C to +85°C

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

Frequency 47 to 63Hz

DC Output Supply

Voltage Current 12.5A

85 - 265V AC (absolute limits)

12V DC (nominal)

10.5-13.8V (absolute limits)

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 271 of 500

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 Component

Part

16.4.2.3. 02-007206 Bandpass Filter 4

16.4.2.4. 07-015105 Wideband Asymmetric Coupler 1

16.4.2.5. 10-000901 Switched Attenuator 0.25W, 0 - 15dB 2

16.4.2.6. 11-006702 Low Noise Amplifier 1

16.4.2.7. 12-018002 Power Amplifier (20W 800MHz ) 1

16.4.2.8. 12-021901 Low Power Amplifier 2

16.4.2.9.

16.4.2.10. 80-008901 12V (Single) Relay Board 1

16.4.2.11. 94-100004 Dual Diode Assembly 1

16.4.2.12. 96-200047 DC/DC Converter 1

16.4.2.13. 96-300052 12V Switch-Mode PSU 1

*The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control (AGC) system used in 800MHz Line Amplifier (55-165703); 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink

17-001109* AGC Detector Assembly (Logarithmic) 1 17-001117* AGC Detector Assembly 1 17-001201* AGC Attenuator Assembly 2

Component Part Description Qty. Per

Assembly

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 272 of 500

16.4.2.1. 700MHz Line Amplifier (55-165704) Outline Drawing

Drawing number 55-1657104

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 273 of 500

16.4.2.2. 700MHz Line Amplifier (55-165704) System Diagram

Drawing number 55-165784

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 274 of 500

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 SPECIFICATION

Response type Chebyshev

Frequency range 800 - 950MHz *

Bandwidth 25MHz *

Number of sections 8

Insertion loss 1.2 dB

VSWR better than 1.2:1

Connectors SMA female

Power handling 100W max

operation -20°C to +60°C Temperature

range

storage -40°C to +70°C

Weight 3 kg (typical)

*tuned to Customer's specification

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 SPECIFICATION

Construction Inductive air gap

Frequency 800-2500MHz

Through loss 0.4dB (typical)

Coupling level -30dB ±0.5dB

Isolation N/A

Weight <1.0kg

Connectors SMA, female

Temperature

range

operation

storage

-20°C to +60°C

-40°C to +70°C

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 275 of 500

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 SPECIFICATION

Attenuation Values 0-15dB

Attenuation Steps 1, 2, 4 and 8dB

Power Handling 0.25 Watt

Attenuation Accuracy ± 1.0 dB

Frequency Range DC to 1GHz

Impedance 50Ω

Connectors SMA

VSWR 1.3:1

Weigh 0.2kg

operation -20°C to +60°C Temperature

range

storage -40°C to +70°C

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 SPECIFICATION

Frequency range: 800 – 1000MHz

Bandwidth: <200MHz

Gain: 29dB (typical)

1dB Compression point: 20dBm

OIP3: 33dBm

Input/Output return loss: >18dB

Noise figure: 1.3dB (typical)

Power consumption: 180mA @ 24V DC

Supply voltage: 10-24V DC

Connectors: SMA female

Temperature range:

operational: -10°C to +60°C

storage: -20°C to +70°C

Size: 90 x 55 x 30.2mm

Weight: 290gms (approximately)

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 276 of 500

Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details

Connector pin Signal

1 +Ve input (10-24V) 2 GND 3 Alarm RelayO/P bad 4 Alarm Relay common 5 Alarm Relay good 6 No connection 7 TTL voltage set 8 TTL alarm/0V (good) 9 O/C good/0V bad

9-Way Pin-Out Graphical Representation

1 2 3 4 5

7 8 96

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 SPECIFICATION

Frequency range: 800-960MHz Small signal gain: 30dB

Gain flatness: ±1.2dB

I/O Return loss: >18dB

1dB compression point: 42.8dBm

OIP3: 56dBm

Supply voltage: 24V DC

Supply current: 5.0Amps (Typical)

operational: -10°C to +60°C Temperature

range

storage: -20°C to +70°C

Weight: <2kg (no heatsink)

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 277 of 500

Power Amplifier (12-018002) 7-Way Connector Pin-outs

Connector Pin Signal

A1 (large pin) +24V DC A2 (large pin) GND

1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL)

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 SPECIFICATION

Frequency range 800-960MHz*

Bandwidth 20MHz *

Maximum RF output >1.0 Watt

Gain 15dB

1dB compression point +30.5dBm

3rd order intercept point +43dBm

Noise Figure <6dB

VSWR better than 1.5:1

Connectors SMA female

Supply 500mA @ 10-15V DC

Temperature

range

operational

storage

Weight 0.5 kg

Size 167x52x25mm

-10°C to +60°C

-20°C to +70°C

* Tuned to Customer’s specification

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 278 of 500

Low Power Amplifier (12-021901) 7-Way Connector Pin-outs

Connector Pin Signal

A1 (large pin) +24V DC A2 (large pin) GND

1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL)

16.4.2.9. Automatic Gain Control

17-001109 AGC Detector Assembly (Logarithmic) 17-001117 AGC Detector Assembly 17-001201 AGC Attenuator Assembly

The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control (AGC) system used in 700MHz Line Amplifier (55-165704); 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink

700MHz Line Amplifier (55-165704) is fitted with two differing types of Automatic Gain Control (AGC) system, one linear, and one logarithmic. The AGC with logarithmic detector (17-001117) is fitted in the uplink path and the AGC with linear detector (17-001109) is fitted in the downlink path

The AFL Automatic Gain Control system consists of two units, a detector/amplifier and an attenuator. The detector/amplifier unit is inserted in the RF path on the output of the power amplifier, and the attenuator is situated in the RF path between the 1st and 2nd stages of amplification. 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink

The attenuator comprises a 50Ω P.I.N diode, voltage-variable attenuator with a range of 3 to 30dB. The attenuation is controlled by a DC voltage which is derived from the associated detector controller board.

Normally the attenuator is at minimum attenuation. The detector/amplifier unit monitors the RF level being delivered by the power amplifier, and when a certain threshold is reached it begins to increase the value of the attenuator to limit the RF output to the (factory set) threshold. Therefore overloading of the power amplifier is avoided.

The factory set threshold is 1dB below the Enhancer 1dB compression point. Some adjustment of this AGC threshold level is possible, a 10dB range is mostly achieved. It is not recommended under any circumstances to adjust the AGC threshold to a level greater than the 1dB compression point as system degradation will occur.

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 279 of 500

The detector comprises of a 50Ω transmission line with a resistive tap which samples a small portion of the mainline power. The sampled signal is amplified and fed to a conventional half wave diode rectifier, the output of which is a DC voltage proportional to the RF input signal.

This DC voltage is passed via an inverting DC amplifier with integrating characteristics, to the output, which drives the attenuation control line of the corresponding AGC attenuator. This unit is fitted at some earlier point in the RF circuit.

For small signals, below AGC onset, the output control line will be close to 12V and the AGC attenuator will have minimum attenuation. As the signal level increases the control line voltage will fall, increasing the attenuator value and keeping the system output level at a constant value.

AGC Specification (both types)

PARAMETER SPECIFICATION

Frequency range up to 1000MHz

Attenuation range 3 to 30dB

Attenuation steps continuously variable

VSWR better than 1.2:1

RF Connectors SMA female

attenuator 1W Power

handling

range

Size

Weight

detector/amp >30W (or as required)

operation -10°C to +60°C Temperature

storage -20°C to +70°C

attenuator pcb 50 x 42 x 21mm

detector/amp pcb 54 x 42 x 21mm

attenuator 90grams

detector/amp 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

operational -10°C to +60°C Temperature

range

storage -20°C to +70°C

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 280 of 500

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 SPECIFICATION

DC Input Voltage range 19 to 36V

DC Output voltage 12V ± 1%

Max. current load 12.5Amps

Operation -10°C to +60°C Temperature

range

Working Humidity 20 to 90% RHNC

Storage -20°C to +85°C

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

Frequency 47 to 63Hz

DC Output Supply

Voltage Current 12.5A

85 - 265V AC (absolute limits)

12V DC (nominal)

10.5-13.8V (absolute limits)

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 281 of 500

16.4.3. Convention Place Station Splitter (55-165709)

2U rack mount tray

Convention Place Station Splitter (55-165709) major components

Section Component

Part

16.4.3.3. 05-002602 900MHz Splitter/Combiner 1

16.4.3.4. 07-015102 Wideband Asymmetric Coupler 2

Component Part Description Qty. Per

Assembly

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 282 of 500

16.4.3.1. Convention Place Station Splitter (55-165709) outline drawing

Drawing number 55-1657109

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 283 of 500

16.4.3.2. Convention Place Station Splitter (55-165709) system diagram

Drawing number 55-165789

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 284 of 500

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 SPECIFICATION

Narrowband: 815 – 960MHz Frequency

range:

Bandwidth:

Insertion loss:

Return loss input & output: 1.3:1

Isolation:

Power rating:

Broadband: 800 – 1200MHz

Narrowband: 145MHz

Broadband: 400MHz

Input ports: 1

Output ports: 2

Narrowband: 3.3dB

Broadband: 3.5dB

Impedance: 50Ω

Narrowband: >20dB

Broadband: >18dB

MTFB: >180,000 hours

Splitting: 20Watts

Combining: 0.5Watt

Connectors: SMA female

Weight: 200g (approximately)

Size: 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 SPECIFICATION

Frequency Range 800 - 2500 MHz

Coupling Value 10 dB ± 1.0 dB

Main Line Insertion Loss <1.6 dB

VSWR 1.4:1

Directivity >18 dB

Power Rating 200 Watts

RF Connectors ‘N’ female

Temperature

range

operation

storage

-20°C to +60°C

-40°C to +70°C

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 285 of 500

17. INTERNATIONAL (NO NPSPAC) LINE AMPLIFIER (80-330557)

Rack C09-CR-06

International (no NPSPAC) Line Amp. (80-330557) list of major components

Section Component

Part

17.4.1. 55-165705 800MHz Line Amplifier (NO NSP) 1

17.4.2. 55-165706 700MHz Line Amplifier (NO NSP) 1

17.4.3. 55-165710 International Station Splitter 1

Component Part Description Qty. Per

Assembly

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 286 of 500

17.1. International (no NPSPAC) Line Amp. (80-330557) Rack elevation

Drawing number 80-330557

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 287 of 500

17.2. International (no NPSPAC) Line Amp. (80-330557) System diagram

Drawing number 80-330587

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 288 of 500

17.3. International (no NPSPAC) Line Amp. (80-330557) Alarm wiring diagram

Drawing number 80-330527

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 289 of 500

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 Component

Part

17.4.1.3. 02-007201 Bandpass Filter 2

17.4.1.4. 02-007206 Bandpass Filter 2

17.4.1.5. 07-015105 Wideband Asymmetric Coupler 1

17.4.1.6. 10-000901 Switched Attenuator 0.25W, 0 - 15dB 2

17.4.1.7. 11-006702 Low Noise Amplifier 1

17.4.1.8. 12-018002 Power Amplifier 1

17.4.1.9. 12-021901 Low Power Amplifier 2

17.4.1.10.

17.4.1.11. 80-008901 12V (Single) Relay Board 1

17.4.1.12. 94-100004 Dual Diode Assembly 1

17.4.1.13. 96-200047 DC/DC Converter

17.4.1.14. 96-300052 12V Switch-Mode PSU (96-300052) 1

*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

17-001109* AGC Detector Assembly (Logarithmic) 1 17-001117* AGC Detector Assembly 1 17-001201* AGC Attenuator Assembly 2

Component Part Description Qty. Per

Assembly

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 290 of 500

17.4.1.1. 800MHz Line Amplifier (no NPSPAC) (55-165705) Outline Drawing

Drawing number 55-1657105

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 291 of 500

14.4.1.2. 800MHz Line Amplifier (no NPSPAC) (55-165705) System Diagram

Drawing number 55-165785

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 292 of 500

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

Rejection

Return loss > 20 dB

Power handling 200W (CW)

operation -20°C to +60°C Temperature

range

storage -40°C to +70°C

Size 227 x 95 x 60mm (case only)

>60 dB over 1710 – 1785 MHz >40 dB over 1905 – 2170 MHz

* 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 SPECIFICATION

Response type Chebyshev

Frequency range 800 - 950MHz *

Bandwidth 25MHz *

Number of sections 8

Insertion loss 1.2 dB

VSWR better than 1.2:1

Connectors SMA female

Power handling 100W max

operation -20°C to +60°C Temperature

range

storage -40°C to +70°C

Weight 3 kg (typical)

*tuned to Customer's specification

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 293 of 500

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 SPECIFICATION

Construction Inductive air gap

Frequency 800-2500MHz

Through loss 0.4dB (typical)

Coupling level -30dB ±0.5dB

Isolation N/A

Weight <1.0kg

Connectors SMA, female

Temperature

range

operation

storage

-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 SPECIFICATION

Attenuation Values 0-15dB

Attenuation Steps 1, 2, 4 and 8dB

Power Handling 0.25 Watt

Attenuation Accuracy ± 1.0 dB

Frequency Range DC to 1GHz

Impedance 50Ω

Connectors SMA

VSWR 1.3:1

Weigh 0.2kg

operation -20°C to +60°C Temperature

range

storage -40°C to +70°C

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 294 of 500

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 SPECIFICATION

Frequency range 800 – 1000MHz

Bandwidth <200MHz

Gain 29dB (typical)

1dB Compression point 20dBm

OIP3 33dBm

Input/Output return loss >18dB

Noise figure 1.3dB (typical)

Power consumption 180mA @ 24V DC

Supply voltage 10-24V DC

Connectors SMA female

Temperature range:

Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details

Connector pin Signal

operational -10°C to +60°C

storage -20°C to +70°C

Size 90 x 55 x 30.2mm

Weight 290gms (approximately)

1 +Ve input (10-24V) 2 GND 3 Alarm RelayO/P bad 4 Alarm Relay common 5 Alarm Relay good 6 No connection 7 TTL voltage set 8 TTL alarm/0V (good) 9 O/C good/0V bad

9-Way Pin-Out Graphical Representation

1 2 3 4 5

7 8 96

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 295 of 500

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 SPECIFICATION

Frequency range: 800-960MHz Small signal gain: 30dB

Gain flatness: ±1.2dB

I/O Return loss: >18dB

1dB compression point: 42.8dBm

OIP3: 56dBm

Supply voltage: 24V DC

Supply current: 5.0Amps (Typical)

operational: -10°C to +60°C Temperature

range

Power Amplifier (12-018002) 7-Way Connector Pin-outs

Connector Pin Signal

A1 (large pin) +24V DC A2 (large pin) GND

1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL)

storage: -20°C to +70°C

Weight: <2kg (no heatsink)

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 296 of 500

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 SPECIFICATION

Frequency range 800-960MHz*

Bandwidth 20MHz *

Maximum RF output >1.0 Watt

Gain 15dB

1dB compression point +30.5dBm

3rd order intercept point +43dBm

Noise Figure <6dB

VSWR better than 1.5:1

Connectors SMA female

Supply 500mA @ 10-15V DC

Temperature

range

Low Power Amplifier (12-021901) 7-Way Connector Pin-outs

Connector Pin Signal

A1 (large pin) +24V DC A2 (large pin) GND

operational

storage

Weight 0.5 kg

Size 167x52x25mm

1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL)

-10°C to +60°C

-20°C to +70°C

* Tuned to Customer’s specification

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 297 of 500

7.4.1.10. Automatic Gain Control

17-001109 AGC Detector Assembly (Logarithmic) 17-001117 AGC Detector Assembly 17-001201 AGC Attenuator Assembly

The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control (AGC) system used in 800MHz 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 (17-

001117) is fitted in the uplink path and the AGC with linear detector (17-001109) is fitted in the downlink path

The AFL Automatic Gain Control system consists of two units, a detector/amplifier and an attenuator. The detector/amplifier unit is inserted in the RF path on the output of the power amplifier, and the attenuator is situated in the RF path between the 1st and 2nd stages of amplification. 17-001117 and 17-001201 are paired for use in the uplink and 17-001109 and 17-001201 are paired for use in the downlink

The attenuator comprises a 50Ω P.I.N diode, voltage-variable attenuator with a range of 3 to 30dB. The attenuation is controlled by a DC voltage which is derived from the associated detector controller board.

Normally the attenuator is at minimum attenuation. The detector/amplifier unit monitors the RF level being delivered by the power amplifier, and when a certain threshold is reached it begins to increase the value of the attenuator to limit the RF output to the (factory set) threshold. Therefore overloading of the power amplifier is avoided.

The factory set threshold is 1dB below the Enhancer 1dB compression point. Some adjustment of this AGC threshold level is possible, a 10dB range is mostly achieved. It is not recommended under any circumstances to adjust the AGC threshold to a level greater than the 1dB compression point as system degradation will occur.

The detector comprises of a 50Ω transmission line with a resistive tap which samples a small portion of the mainline power. The sampled signal is amplified and fed to a conventional half wave diode rectifier, the output of which is a DC voltage proportional to the RF input signal.

This DC voltage is passed via an inverting DC amplifier with integrating characteristics, to the output, which drives the attenuation control line of the corresponding AGC attenuator. This unit is fitted at some earlier point in the RF circuit.

For small signals, below AGC onset, the output control line will be close to 12V and the AGC attenuator will have minimum attenuation. As the signal level increases the control line voltage will fall, increasing the attenuator value and keeping the system output level at a constant value.

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 298 of 500

AGC Specification (both types)

PARAMETER SPECIFICATION

Frequency range up to 1000MHz

Attenuation range 3 to 30dB

Attenuation steps continuously variable

VSWR better than 1.2:1

RF Connectors SMA female

attenuator 1W Power

handling

range

Size

Weight

detector/amp >30W (or as required)

operation -10°C to +60°C Temperature

storage -20°C to +70°C

attenuator pcb 50 x 42 x 21mm

detector/amp pcb 54 x 42 x 21mm

attenuator 90grams

detector/amp 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

operational -10°C to +60°C Temperature

range

storage -20°C to +70°C

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 299 of 500

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 SPECIFICATION

DC Input Voltage range 19 to 36V

DC Output voltage 12V ± 1%

Max. current load 12.5Amps

Operation -10°C to +60°C Temperature

range

Working Humidity 20 to 90% RHNC

Storage -20°C to +85°C

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

Frequency 47 to 63Hz

DC Output Supply

Voltage Current 12.5A

85 - 265V AC (absolute limits)

12V DC (nominal)

10.5-13.8V (absolute limits)

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 300 of 500

17.4.2. 700MHz Line Amplifier (no NPSPAC) (55-165706)

700MHz Line Amplifier (no NPSPAC) (55-165706) List of Major Components

Section Component

Part

17.4.2.3. 02-007201 Bandpass Filter 2

17.4.2.4. 02-007206 Bandpass Filter 2

17.4.2.5. 07-015105 Wideband Asymmetric Coupler 1

17.4.2.6. 10-000901 Switched Attenuator 0.25W, 0 - 15dB 2

17.4.2.7. 11-006702 Low Noise Amplifier 1

17.4.2.8. 12-018002 Power Amplifier 1

17.4.1.9. 12-021901 Low Power Amplifier 2

17.4.2.10.

17.4.2.11. 80-008901 12V (Single) Relay Board 1

17.4.2.12. 94-100004 Dual Diode Assembly 1

17.4.2.13. 96-200047 DC/DC Converter

17.4.2.14. 96-300052 12V Switch-Mode PSU (96-300052) 1

*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

17-001109 AGC Detector Assembly (Logarithmic) 1 17-001117 AGC Detector Assembly 1 17-001201 AGC Attenuator Assembly 2

Component Part Description Qty. Per

Assembly

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 301 of 500

17.4.2.1. 700MHz Line Amplifier (no NPSPAC) (55-165706) Outline Drawing

Drawing number 55-1657106

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 302 of 500

17.4.2.2. 700MHz Line Amplifier (no NPSPAC) (55-165706) System Diagram

Drawing number 55-165786

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 303 of 500

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

Rejection

Return loss > 20 dB

Power handling 200W (CW)

operation -20°C to +60°C Temperature

range

storage -40°C to +70°C

Size 227 x 95 x 60mm (case only)

>60 dB over 1710 – 1785 MHz >40 dB over 1905 – 2170 MHz

* 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 SPECIFICATION

Response type Chebyshev

Frequency range 800 - 950MHz *

Bandwidth 25MHz *

Number of sections 8

Insertion loss 1.2 dB

VSWR better than 1.2:1

Connectors SMA female

Power handling 100W max

operation -20°C to +60°C Temperature

range

storage -40°C to +70°C

Weight 3 kg (typical)

*tuned to Customer's specification

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 304 of 500

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 SPECIFICATION

Construction Inductive air gap

Frequency 800-2500MHz

Through loss 0.4dB (typical)

Coupling level -30dB ±0.5dB

Isolation N/A

Weight <1.0kg

Connectors SMA, female

Temperature

range

operation

storage

-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 SPECIFICATION

Attenuation Values 0-15dB

Attenuation Steps 1, 2, 4 and 8dB

Power Handling 0.25 Watt

Attenuation Accuracy ± 1.0 dB

Frequency Range DC to 1GHz

Impedance 50Ω

Connectors SMA

VSWR 1.3:1

Weigh 0.2kg

operation -20°C to +60°C Temperature

range

storage -40°C to +70°C

STTRS DOCUMENTATION 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 SPECIFICATION

Frequency range 800 – 1000MHz

Bandwidth <200MHz

Gain 29dB (typical)

1dB Compression point 20dBm

OIP3 33dBm

Input/Output return loss >18dB

Noise figure 1.3dB (typical)

Power consumption 180mA @ 24V DC

Supply voltage 10-24V DC

Connectors SMA female

Temperature range:

Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details

Connector pin Signal

operational -10°C to +60°C

storage -20°C to +70°C

Size 90 x 55 x 30.2mm

Weight 290gms (approximately)

1 +Ve input (10-24V) 2 GND 3 Alarm RelayO/P bad 4 Alarm Relay common 5 Alarm Relay good 6 No connection 7 TTL voltage set 8 TTL alarm/0V (good) 9 O/C good/0V bad

9-Way Pin-Out Graphical Representation

1 2 3 4 5

7 8 96

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 306 of 500

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 SPECIFICATION

Frequency range: 800-960MHz Small signal gain: 30dB

Gain flatness: ±1.2dB

I/O Return loss: >18dB

1dB compression point: 42.8dBm

OIP3: 56dBm

Supply voltage: 24V DC

Supply current: 5.0Amps (Typical)

operational: -10°C to +60°C Temperature

range

Power Amplifier (12-018002) 7-Way Connector Pin-outs

Connector Pin Signal

A1 (large pin) +24V DC A2 (large pin) GND

1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL)

storage: -20°C to +70°C

Weight: <2kg (no heatsink)

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft 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 SPECIFICATION

Frequency range 800-960MHz*

Bandwidth 20MHz *

Maximum RF output >1.0 Watt

Gain 15dB

1dB compression point +30.5dBm

3rd order intercept point +43dBm

Noise Figure <6dB

VSWR better than 1.5:1

Connectors SMA female

Supply 500mA @ 10-15V DC

Temperature

range

Low Power Amplifier (12-021901) 7-Way Connector Pin-outs

Connector Pin Signal

A1 (large pin) +24V DC A2 (large pin) GND

operational

storage

Weight 0.5 kg

Size 167x52x25mm

1 Alarm relay common 2 TTL alarm/0V good 3 Alarm relay contact (bad) 4 Alarm relay contact (good) 5 O/C good/0V bad (TTL)

-10°C to +60°C

-20°C to +70°C

* Tuned to Customer’s specification

STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 308 of 500

7.4.2.10. Automatic Gain Control

17-001109 AGC Detector Assembly (Logarithmic) 17-001117 AGC Detector Assembly 17-001201 AGC Attenuator Assembly

The sub components 17-001109, 17-001117 & 17-001201 are parts of the Automatic Gain Control (AGC) system used in 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 (17-