PBE Europe as Axell Wireless 50-1465SERIES 50-146501 VHF Channelised Air Interface User Manual 50 146501 50 146601 50 146701HBKM

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Document Description	User Manual 2 of 2
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Date Submitted	2007-02-05 00:00:00
Date Available	2007-02-06 00:00:00
Creation Date	2007-01-23 15:37:20
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Document Lastmod	2007-01-23 15:37:39
Document Title	50-146501_50-146601_50-146701HBKM.pdf
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Document Author:	dwinstanley

4.2
UHF Channel Selective Cell Enhancer Rack (50-146601)
4.2.1 Description
The UHF cell enhancer in this system is a six channel, duplex only, two-way radio repeater rack with
automatic gain control of both up and downlink paths. A dedicated power supply provides all the DC
needed by the whole rack, driven from the local mains supplies (identical with PSU in VHF cell
enhancer rack). Alarms are provided from each active device and all are ‘looped’ to form a normally
closed fail-safe alarm (locally for each shelf and globally for the whole enhancer). This loop alarm is
easily configured to join any other similarly wired system.
4.2.2 Electrical Specification
PARAMETER
UHF frequencies:
Gain Adjustment:
Gain Adjustment:
Uplink Power:
Downlink Power:
AGC:
In-Band Spurious:
Noise Figure:
VSWR:
Impedance:
Alarms Fitted:
(volt-free contacts/TTL)
SPECIFICATION
453.7500MHz
465.0375MHz
471.2625MHz
UHF downlink
479.8375MHz
481.0375MHz
485.6375MHz
458.7500MHz
460.0375MHz
470.7125MHz
UHF uplink
474.2625MHz
476.8375MHz
484.0375MHz
0 - 30dB (in 2dB steps)
0 – 15dB (in 1dB step)
5 Carriers @ +24dBm
5 Carriers @ +27dBm
Fitted in all channel selective modules
Better than –13dBm (measured with
30KHz BW with max gain setting)
<6dB (@ maximum gain)
better than 1.5:1
50ȍ
Amplifiers
PSU
4.2.3 Mechanical Specification
PARAMETER
Rack
Shelves:
Height:
Width:
Depth:
Height:
Width:
Depth:
Temperature
range:
operational:
storage:
Weight:
Humidity:
RF Connectors:
Environmental protection:
Supply cable:
SPECIFICATION
43U Standard Eldon Vented Rack
19" (482.6mm)
600mm
See shelves parts lists
19" (482.6mm)
<450mm(excluding heatsinks, connectors,
handles and feet)
-20°C to +60°C
-40°C to +70°C
>100kg
5 – 95% non-condensing
N type female
IP44
Dedicated PSU shelf supply cable
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 44 of 86
4.2.4 Parts List
AFL Part Nǀ.
50-146512
50-146602
50-146603
50-146604
50-146605
50-146606
50-146607
50-146608
50-146609
50-146610
50-146612
80-054020
80-063654
90-100011
91-000002
91-030002
97-500175
99-000082
Part Description
VHF/UHF SYSTEM PSU 24v
UHF DOWNLINK COMBINER
UHF UPLINK SPLITTER
UHF DUPLEX BDA CHN1
UHF DUPLEX BDA CHN2
UHF DUPLEX BDA CHN3
UHF DUPLEX BDA CHN4
UHF DUPLEX BDA CHN5
UHF UPLINK COMBINER
UHF DOWNLINK SPLITTER
UHF DUPLEX BDA CHN6
600mm DEEP SUPPORT BRACKET
1U BLANKING PANEL (BS) RAL 7035
IEC MAINS LEAD '6 AMP' for USA
N PLUG RG223:U
N ADAPTOR PANEL FEMALE:FEMALE
ELDON 43U 600 x 600 RACK (VENTED LID)
PALLET 900 x 900 x 7ply FOR RACKS
Qty.
22
58
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 45 of 86
4.2.5 Downlink Combiner Shelf (50-146602)
4.2.5.P
Downlink Combiner Photographs
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 46 of 86
4.2.5.1Description
The UHF downlink combiner shelf receives signals from the outputs of the six BDA shelves and
combines them using a series of bandpass, notch filters and hybrid couplers. The two UHF outputs
then directly drive the leaky feeder antennas. This is a passive only shelf and has no need of a power
source or alarms.
4.2.5.2Technical Specification
PARAMETER
DC power consumption:
Chassis height:
IP protection:
Relative humidity range:
Impedance:
Alarms:
operation:
Temperature Range:
storage:
Case:
Heatsinks:
Finish:
Fascia:
Handles:
SPECIFICATION
None
4U
IP44
5-95%
50ȍ
None
-10C to +60C
-30C to +70C
Alocrom 1200/Iridite NCP
None
Painted to RAL7035
Silver anodise
4.2.5.3Parts List
AFL Part Nǀ.
02-007309
02-013401
02-020001
05-000101
05-000104
19-001022K
91-030002
91-130001
Part Description
SDF C/L5P VAR.BW TOP SMA 50mm POST
6P CL FLTR(0.5 min BW) LARGE SMA ASSY
UHF 2 LN NOTCH FILTER SMA
TRANSMITTER HYBD COUPL.4 PORT
TRANS.HYBRD.COUPL.3 PORT 50W INT.L
4U CHASSIS KIT (450mm deep)
N ADAPTOR PANEL FEMALE:FEMALE
SMA ADAPT 'T' ALL FEMALE 3 GHz
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 47 of 86
Qty.
4.2.5.4System Diagram, Drg. # 50-146682
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 48 of 86
4.2.6 Uplink Splitter Shelf (60-146603)
4.2.6.P
Uplink Splitter Shelf Photographs
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 49 of 86
4.2.6.1Description
The UHF uplink splitter receives a single RF source (from the leaky feeder antenna(s) and directs it
through hybrid couplers, bandpass and notch filters to the inputs of the UHF uplink BDA shelves. This
is a passive only shelf and has no need of a power source or alarms.
4.2.6.2Technical Specification
PARAMETER
DC power consumption:
Chassis height:
IP protection:
Relative humidity range:
Impedance:
Alarms:
operation:
Temperature Range:
storage:
Case:
Heatsinks:
Finish:
Fascia:
Handles:
SPECIFICATION
None
4U
IP44
5-95%
50ȍ
None
-10C to +60C
-30C to +70C
Alocrom 1200/Iridite NCP
None
Painted to RAL7035
Silver anodise
4.6.2.3Parts List
AFL Part Nǀ.
02-007302
02-007309
02-013401
02-020001
05-002603
19-001022K
91-030002
91-130001
Part Description
SDF C/L5P VAR.BW TOP SMA 40 mm POST
SDF C/L5P VAR.BW TOP SMA 50mm POST
6P CL FLTR (0.5 min BW) LARGE SMA ASSY
UHF 2 LN NOTCH FILTER SMA
UHF 3DB SPLITTER SMA
4U CHASSIS KIT (450mm deep)
N ADAPTOR PANEL FEMALE:FEMALE
SMA ADAPT 'T' ALL FEMALE 3 GHz
Qty.
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 50 of 86
4.2.6.4System Diagram, Drg. # 50-146683
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 51 of 86
4.2.7 UHF Duplex Channel 1 BDA (50-146604)
4.2.7.P
Duplex Shelf Photographs (hardware identical, only 1 shelf shown)
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 52 of 86
4.2.7.1Description
The BDA shelves amplify the UHF digital signals at specific frequencies, selected by the channel
control modules. They each have a gain of approximately 95dB and switched attenuators after the
input amplifier and at the output so that channels may be individually set up for the best signal levels
at the time of installation.
4.2.7.2Technical Specification
PARAMETER
UHF Frequencies:
Shelves
Bandwidth:
Height:
Width:
Depth:
Downlink Gain(Duplexed):
Gain Adjustment:
Uplink Power:
Downlink Power:
AGC:
Noise Figure:
VSWR:
Impedance:
RF Connectors:
Supply voltage:
System power requirement:
Alarms Fitted:
(volt-free contacts/TTL)
SPECIFICATION
453.750MHz (Ch. 1)
465.0375MHz (Ch. 2)
472.2675MHz (Ch. 3)
UHF downlink
479.8375MHz (Ch. 4)
484.0375MHz (Ch. 5)
470.7125
458.750MHz (Ch. 1)
460.0375MHz (Ch. 2)
471.2625MHz (Ch. 3)
UHF uplink
476.8375MHz (Ch. 4)
481.0375MHz (Ch. 5)
485.6375MHz (Ch. 6)
15kHz (up & downlink)
3U
19" (482.6mm)
<450mm (excluding heatsinks, connectors,
handles and feet)
95dB min
0 – 15dB (in 1dB step)
>10Watts
>10Watts
Fitted in all channel selective modules
<6dB (@ maximum gain)
better than 1.5:1
50ȍ
N type, female
24V DC (nominal from PSU shelf)
24V DC @ <10A (fuse rating)
Amplifiers
Channel modules
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 53 of 86
4.2.7.3Parts List
AFL Part Nǀ.
08-930003
10-000701
10-000901
11-007302K
11-007402K
12-001806
12-002201
12-002220
12-002826
13-001803
13-001822
17-004730
17-010809
19-000922KL
20-001601
80-008901
80-063920
91-030002
91-500001
91-510003
91-600001
91-620001
91-700017
96-100001
96-110012
96-600002
96-600003
Part Description
2 PORT ISOLATOR 360-470MHz SMA
1/4W0-30dB SWITCHED ATTENUATOR
SW. ATTENUATOR 0.25W 0-15dB
LNA. 380-500MHz 20dB (relay) KIT
LNA. 380-500MHz 30dB (relay) KIT
400MHz 10W CLASS AB POWER AMPLIFIER
3 STAGE AMPLIFIER ALARM BOARD
3 STAGE ALARM PCB COVER
ALARM BOARD ACRYLIC LENS
DUAL DC/DC CONVERTER 24V-12V 1A
DC-DC CON 24V-5V/15V COVER
ATTENUATOR MOUNTING
CHAN MOD 450MHz 30kHz 8p GATED O/P
3U chassis kit 450 deep with led
12V RELAY BOARD
12V RELAY PCB ASSEMBLY **NO LED**
HEATSINK 2U ASS140 (5W)
N ADAPTOR PANEL FEMALE:FEMALE
POWER PLG 3 PIN PNL.MOUNT NC-X
3 PIN R.ANGLE FREE SOC.NC-X.
'D'TYPE 9 WAY PLUG S/B TERM
'D' 25 WAY SOCKET S/B TERM
ICD 15 WAY 0.1' CONNECTOR
20 x 5mm,10A FUSE HOLDER/CARRIER
T 10A A.SURGE FUSE 20mm
INSULATING BOOT SMALL
INSULATING BOOT D.C.
Qty.
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 54 of 86
4.2.7.4UHF Duplex Channel 1 BDA System Diagram Drg. # 60-146684
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 55 of 86
4.2.8 UHF Duplex Channel 2 BDA (50-146605)
See section 4.2.7
4.2.8.1UHF Duplex Channel 2 BDA System Diagram, Drg. # 50-146685
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 56 of 86
4.2.9 UHF Duplex Channel 3 BDA (50-146606)
See section 4.2.7
4.2.9.1UHF Duplex Channel 3 BDA System Diagram, Drg. # 50-146686
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 57 of 86
4.2.10
UHF Duplex Channel 4 BDA (50-146607)
See section 4.2.7
4.2.10.1
UHF Duplex BDA Channel 4 System Diagram, Drg. # 50-146687
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 58 of 86
4.2.11
UHF Duplex Channel 5 BDA (50-146608)
See section 4.2.7
4.2.11.1
UHF Duplex Channel 5 System Diagram, Drg. # 50-146688
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 59 of 86
4.2.12
UHF Duplex Channel 6 BDA (50-146612)
See section 4.2.7
4.2.12.1
UHF Duplex Channel 6 BDA System Diagram, Drg. # 50-146692
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 60 of 86
4.2.13
4.2.13.P
UHF Uplink Combiner Shelf (50-146609)
UHF Uplink Combiner Shelf Photographs
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 61 of 86
4.2.13.1
Description
This uplink combiner receives all the UHF signals from the different duplex cell enhancer shelves and
couples them together using a combination of bandpass filters and hybrids to the single Tx antenna.
This is a passive only shelf and has no need of a power supply or alarms.
4.2.13.2
Technical Specification
PARAMETER
Height:
Shelf
Width:
dimensions:
Depth:
Temperature
operational:
range:
storage:
Weight:
Impedance:
Humidity:
RF Connectors:
Environmental protection:
Case:
Heatsinks:
Finish:
Handles:
Fascia
4.2.13.3
AFL Part Nǀ.
02-007302
02-007309
02-013401
02-020001
05-000104
19-001022K
91-030002
91-130001
SPECIFICATION
4U
19" (482.6mm)
<450mm (excluding connectors & handles)
-20°C to +60°C
-40°C to +70°C
<10kg
50ȍ
5 – 95% non-condensing
N type female
IP44
Iridite NCP coating
None
Silver anodised aluminium alloy
Painted to RAL7035
Parts List
Part Description
SDF C/L5P VAR.BW TOP SMA 40 mm POST
SDF C/L5P VAR.BW TOP SMA 50mm POST
6P CL FLTR(0.5 min BW) LARGE SMA ASSY
UHF 2 LN NOTCH FILTER SMA
TRANS.HYBRD.COUPL.3 PORT 50W INT.L
4U CHASSIS KIT (450mm deep)
N ADAPTOR PANEL FEMALE:FEMALE
SMA ADAPT 'T' ALL FEMALE 3 GHz
Qty.
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 62 of 86
4.2.13.4
UHF Uplink Combiner Shelf System Diagram, Drg. # 50-146689
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 63 of 86
4.2.14
4.2.14.P
UHF Downlink Splitter Shelf (50-146610)
UHF Downlink Splitter Shelf Photographs
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 64 of 86
4.2.14.1
Description
This UHF downlink splitter shelf couples the received UHF signals to the cell enhancers via bandpass
filters and hybrids. This passive shelf has no connection to any power supply and no alarms.
4.2.14.2
Technical Specification
PARAMETER
Height:
Shelf
Width:
dimensions:
Depth:
Temperature
operational:
range:
storage:
Weight:
Impedance:
Humidity:
RF Connectors:
Environmental protection:
Case:
Heatsinks:
Finish:
Handles:
Fascia
4.2.14.3
AFL Part Nǀ.
02-007309
02-013401
02-020001
05-002603
19-001022K
91-030002
91-130001
SPECIFICATION
4U
19" (482.6mm)
<450mm (excluding connectors & handles)
-20°C to +60°C
-40°C to +70°C
<10kg
50ȍ
5 – 95% non-condensing
N type female
IP44
Alocrom 1200/Iridite NCP coating
None
Anodised aluminium alloy
Painted to RAL7035
Parts List
Part Description
SDF C/L5P VAR.BW TOP SMA 50mm POST
6P CL FLTR (0.5 min BW)LARGE SMA ASSY
UHF 2 LN NOTCH FILTER SMA
UHF 3dB SPLITTER SMA
4U CHASSIS KIT (450mm deep)
N ADAPTOR PANEL FEMALE:FEMALE
SMA ADAPT 'T' ALL FEMALE 3 GHz
Qty.
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 65 of 86
4.2.14.4
UHF Downlink Splitter Shelf System Diagram, Drg. # 50-146690
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 66 of 86
4.3
800MHz Channel Selective Cell Enhancer Rack (50-146701)
4.3.1 Description
The 800MHz cell enhancer consists of four dedicated shelves and features two, separate, IF
channels tuned by independent channel selective modules (one 5.0MHz B/W, one 3.0MHz). The
power supply shelf provides all the DC needed by the whole 800MHz system, driven from the local
mains supplies. Alarms are provided from each active device and all are ‘looped’ to form a normally
closed fail-safe alarm (locally for each shelf and globally for the whole enhancer/rack). This loop
alarm is easily configured to join any other similarly wired system. Operators should be aware that the
8U BDA shelf and the 100W amplifier shelf are at the weight limit for a one-person lift. If in doubt do
not attempt to lift these shelves alone!
No battery backup is provided for this system, should the mains supply fail, the 800MHz system will
not function.
4.3.2 Technical Specification
PARAMETER
SPECIFICATION
Height: 43U Standard Eldon Vented Rack
Rack
Width: 19" (482.6mm)
Depth: 600mm
Height: See parts lists
Width: 19" (482.6mm)
Shelves:
<450mm (excluding heatsinks, connectors,
Depth:
handles and feet)
Temperature
operational: -20°C to +60°C
range:
storage: -40°C to +70°C
Weight: >100kg
Humidity: 5 – 95% non-condensing
RF Connectors: N type female
Environmental protection: IP44
Supply cable: All shelves supplied from dedicated PSU shelf
Note: Individual shelf weights not specified.
4.3.3 Parts List
AFL Part Nǀ.
50-146702
50-146703
50-146704
80-054020
80-063654
80-063655
90-100011
91-000002
91-030002
97-500175
99-000082
Part Description
800MHz CHN SELECT UL AND DL TRAY
800MHz CHN SELECT POWER AMPLIFIER
800MHz CHANNEL SELECTIVE PSU
600mm DEEP SUPPORT BRACKET
1U BLANKING PANEL (BS) RAL 7035
2U BLANKING PANEL (BS) RAL 7035
IEC MAINS LEAD '6 AMP' for USA
N PLUG RG223:U
N ADAPTOR PANEL FEMALE:FEMALE
ELDON 43U 600 x 600 RACK (VENTED LID)
PALLET 900 x 900 x 7ply FOR RACKS
Qty.
14
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 67 of 86
4.3.4 800MHz Channel Selective C.E. System Diagram, Drg. # 50-146782
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 68 of 86
4.4
Channel Selective Uplink & Downlink Shelf (50-146702)
4.4.P Uplink & Downlink Shelf Photographs
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 69 of 86
4.4.1 Uplink & Downlink Shelf Description
This 8U shelf holds all the electronics modules for the 800MHz BDA except for the downlink power
amplifier shelf and the PSU shelf. The alarms are a volt-free, relay contact pair, ‘D’ connector pins 1 &
2.
4.4.2 Uplink & Downlink Shelf Electrical Specifications
PARAMETER
800MHz tuned frequency ranges:
IF Band select downlink channels:
IF Band select uplink channels:
SPECIFICATION
851-869 MHz (downlink)
806-824 MHz (uplink)
856-861MHz
866-869MHz
811-816MHz
821-824MHz
3MHz or 5MHz
0 - 30dB (in 2dB steps)
>10Watts
>80-100Watts
Fitted in all channel selective modules
<6dB (@ maximum gain)
better than 1.5:1
50ȍ
N type, female
IF Bandwidths:
Gain Adjustment:
Uplink Power:
Downlink Power:
AGC:
Noise Figure:
VSWR:
Impedance:
RF Connectors:
Alarms Fitted:
(‘D’ connector, pins 1 & 2)
Amplifiers
4.4.3 Uplink & Downlink Shelf Mechanical Specifications
PARAMETER
SPECIFICATION
Height: 8U
Width: 19" (482.6mm)
Shelf:
<450mm(excluding heatsinks, connectors,
Depth:
handles and feet)
Temperature
operational: -20°C to +60°C
range:
storage: -40°C to +70°C
Weight: <20kg
Humidity: 5 – 95% non-condensing
RF Connectors: N type female
Environmental protection: IP44
4.4.4 Uplink & Downlink Shelf System Diagram See section 4.3.4
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 70 of 86
4.4.5 Uplink & Downlink Shelf Parts List
AFL Part Nǀ.
02-007206
05-002603
10-000701
11-005902
11-006702
12-018601
12-021901
12-023301
13-003011
14-000225
17-002101
17-002103
17-003043
17-004730
17-004733
50-012820
50-012822
50-012825
50-027720
80-008901
80-090822
91-030002
91-130001
91-130005
91-500001
91-510002
91-510032
91-600005
91-600014
91-600015
91-660001
91-700017
96-600003
96-700034
96-700035
97-400005
Part Description
900MHz 8POLE 15-25MHz B/W "SMA"
UHF 3dB SPLITTER SMA
1/4W0-30dB SWITCHED ATTENUATOR
900MHz LOW NOISE AMP WITH RELAY ASS
GA 800-1000MHz LNA 29dB (WITH RELAY)
POWER AMPLIFIER 900MHz 5W
POWER AMPLIFIER 900MHz 1W +12V
PA 851-866MHz 20W LINEARIZED +24V
DC/DC CONVERTER 24-12V 8A PCB SUB-ASS
CASE RAIL LONG R.S.A./R.F.A.
CHANNEL CONTROL MODULE
26WAY RIBBON CABLE LEAD
CHAN MOD 820-870MHz 3.0MHz B/W
ATTENUATOR MOUNTING
SIMP.C.E ATTENUATOR COVER(RAL7032)
CCE RACK MOUNTED 8U CHASSIS
CCE RACK MOUNTED LID
CCE RACK MOUNTED HEATSINK BRACKET
RACK MTD CHAN C.E. MODIFIED HEATSIN
12V RELAY PCB ASSEMBLY **NO LED**
C/E 8U FRONT PANEL, AFL (RAL7035)
N ADAPTOR PANEL FEMALE:FEMALE
SMA ADAPT 'T' ALL FEMALE 3 GHz
SMA BULKHEAD ADAPTOR F/F
POWER PLG 3 PIN PNL.MOUNT NC-X
3 PIN STRAIGHT FREE SOC.NC-X.
20A SOCKET CONTACT PIN
'D' 9 WAY SOCKET S/B TERM
'D' 9 WAY SOCKET S/B (NON FILTERED)
'D' 9 WAY PLUG S/B (NON FILTERED)
2W5 MIXED D TYPE SOCKET (7 WAY)
ICD 15 WAY 0.1' CONNECTOR
INSULATING BOOT D.C.
LED RED 5mm IP67 INTEGRAL RES. 24V
LED GREEN 5mm IP67 INTEGRAL RES 24V
HANDLE TYPE H6802 3U [ALLOY]
Qty.
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 71 of 86
4.5
800MHz Downlink Power Amplifier Shelf (50-146703)
4.5.P Downlink Power Amplifier Shelf Photographs
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 72 of 86
4.5.1 Downlink Power Amplifier Shelf Description
The 100W amplifier shelf is a linearised Class A amplifier where 4 linearised power amplifiers are
combined together in a series/parallel configuration which yields approximately double the output
power per path. Its housing is a 4U 19” Rack with SMA connectors for the RF input/output, 2 DType connectors for the alarm function and 2 DC connectors with fuse for the 24 DC supply. Its
cooling is realized by fans mounted on the front panel.
It has a built in Current Fault Alarm Function with the four amplifiers in two summary alarm paths.
The summary alarm on D connector ‘A’ will show an alarm for the two amplifiers mounted on the
top of the shelf. The summary alarm on D connector ‘B’ will show an alarm for the two amplifiers
mounted at the bottom of the shelf.
4.5.2 Downlink Power Amplifier Shelf Electrical Specifications
PARAMETER
Frequency range:
Bandwidth:
Gain:
Gain Flatness:
1dB Compression Point:
3rd order intercept:
Input/Output return loss:
Connectors:
Supply:
Alarms:
SPECIFICATION
851-866MHz
<30MHz
36dB (typical)
<0.5dB
+43.5dBm (typical)
+61.5dBm (typical)
>15dB
SMA female
24V DC @ 16-18Amps
‘D’ conn. Pins 1 & 2 (x2)
4.5.3 Downlink Power Amplifier Shelf Mechanical Specification
PARAMETER
SPECIFICATION
Height: 4U
Width: 19" (482.6mm)
Shelf:
<450mm(excluding heatsinks,
Depth:
connectors, handles and feet)
Temperature
operational: -20°C to +60°C
range:
storage: -40°C to +70°C
Weight: <25kg
Humidity: 5 – 95% non-condensing
RF Connectors: N type female
Environmental protection: IP44
4.5.4 Downlink Power Amplifier Shelf System Diagram
See section 4.3.4
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 73 of 86
4.5.5 Downlink Power Amplifier Shelf Parts List
AFL Part Nǀ.
Part Description
05-002602
05-002622
12-023301
80-008902
80-245121
80-245122
80-245123
80-245124
80-245125
80-245126
80-245128
80-245129
80-245130
80-245131
80-245132
90-010021
90-010024
90-010026
90-010027
91-130005
91-500001
91-600015
91-600019
91-640004
91-660001
91-700017
91-700036
91-700037
91-700038
91-700039
91-700040
91-700042
92-110003
92-300010
92-340001
92-700008
92-700010
92-700057
96-100004
96-110005
96-110015
96-110040
96-400002
96-400003
96-600003
96-700034
96-700035
97-400002
97-600004
97-600005
97-600008
97-600016
900MHz SPLITTER/COMBINER, 20W
SPLITTER/COMBINER AUX. MTG PLATE
PA 851-866MHz 20W LINEARIZED +24V
24V RELAY PCB ASSEMBLY **NO LED**
CLASS A LINEARIZED HEATSINK
100WTETRA LINEARIZED H'SINK MTG BKT
100WTETRA LINEARIZED SIDE PANEL
100WTETRA LINEARIZED RACK LID
100WTETRA LINEARIZED FRONT PANEL
100WTETRA LINEARIZED DUCT END PLATE
100WTETRA LINEARIZED DUCT MTG BLOCK
100WTETRA LINEARIZED LID MTG BKT
100WTETRA LINEARIZED DUCT TOP COVER
100WTETRA LINEARIZED DUCT BOT COVER
CLASS A LINEARIZED AMP CABLE TIDY
RF CABLE SUPFLEX SMA R/A MALE 100mm
RF CABLE SUPFLEX SMA R/A MALE 400mm
RF CABLE SUPFLEX SMA R/A MALE 150mm
RF CABLE SUPFLEX SMA R/A MALE 250mm
SMA BULKHEAD ADAPTOR F/F
POWER PLG 3 PIN PNL.MOUNT NC-X
'D' 9 WAY PLUG S/B (NON FILTERED)
'D'15 WAY SHELL (2W7)
LARGE PIN FOR 91-660001 D SOCKET
2W5 MIXED D TYPE SOCKET (7 WAY)
ICD 15 WAY 0.1' CONNECTOR
MISC 3 WAY PLUG HOUSING
MISC 4 WAY PLUG HOUSING
MISC PLG PIN FOR 3WAY HOUSING 14AWG
MISC 3 WAY SOCKET HOUSING
MISC 4 WAY SOCKET HOUSING
MISC SOC.PIN FOR 3WAY HOUSING 14AWG
CABLE CLIPS LARGE 13mm (WHITE)
M3 x 12 HEX SPACER BRASS N:P
M3 x 8mm 'D'CONNECTOR SCREW LOCK
M3 BLUE RING TERMINAL %
M5 BLUE RING TERMINAL
FEM 2.8 x 0.8 PUSH ON BARE TERM RED
32mm 20A (16A max load) FUSE HOLDER
315mA FUSE GLASS A/SURGE 20 x 5mm
T 15A A/SURGE FUSE 1.25'
BULGIN IN-LINE FUSEHOLDER 20mm
80 x 80mm 24V DC FAN SUNON
PLASTIC FINGER GUARD 80 x 80mm
INSULATING BOOT D.C.
LED RED 5mm IP67 INTEGRAL RES. 24V
LED GREEN 5mm IP67 INTEGRAL RES 24V
HANDLE TYPE H6803 4U.[ALLOY]
19" SUBRACK REAR RAIL
19" SUBRACK FRONT RAIL
19" SUBRACK TAPPED STRIP
19" 4U SUBRACK MOUNTING FLANGE
Qty.
32
12
12
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 74 of 86
4.6
Multiband Combiner Shelf (50-146705)
4.6.P Multiband Combiner Shelf Photographs
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 75 of 86
4.6.1 Multiband Combiner Shelf Description
The multiband combiner performs the task of receiving all three frequency bands (VHF, UHF &
800MHz), passing them through a series of crossband couplers and a hybrid combiner to the two exit
ports, DAS1 & DAS2. This is an entirely passive unit using no active devices, no power supply and
therefore no alarm interface.
4.6.2 Multiband Combiner Shelf Technical Specification
PARAMETER
VHF Frequencies:
UHF Frequencies:
800MHz tuned frequency ranges:
VSWR:
Impedance:
RF Connectors:
Alarms Fitted:
Environmental protection:
Weight:
Height:
Width:
Shelf:
Depth:
Temperature
range:
* = Duplex channel
operational:
storage:
SPECIFICATION
153.965MHz* (Ch 1)
154.755MHz
VHF downlink
154.785MHz
154.980MHz
158.925MHz* (Ch 2)
151.355MHz* (Ch 1)
154.6575MHz* (Ch 2)
VHF uplink
154.755MHz
154.785MHz
154.980MHz
453.7500MHz
465.0375 MHz
471.2625 MHz
UHF downlink
479.8375 MHz
481.0375 MHz
485.6375 MHz
458.7500 MHz
460.0375 MHz
470.7125 MHz
UHF uplink
474.2625 MHz
476.8375 MHz
484.0375 MHz
851-869 MHz
(downlink)
806-824 MHz
(uplink)
better than 1.5:1
50ȍ
N type, female
None
IP44
<10kg
3U
19" (482.6mm)
<450mm(excluding heatsinks, connectors,
handles and feet)
-20°C to +60°C
-40°C to +70°C
4.6.3 Multiband Combiner Shelf Parts List
AFL Part Nǀ.
05-003001
07-004804
07-005705
09-002101
19-000922K
91-030002
Part Description
COUPLER 900MHz 4 PORT(THC-900)
500/800MHz CROSS BAND COUPLER SMA
CROSSBAND CPLR XC 250/380 SMA
50W DUMMY LOAD DC-2.5GHz N FEMALE
3U CHASSIS KIT (450mm deep)
N ADAPTOR PANEL FEMALE:FEMALE
Qty.
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 76 of 86
4.6.4 Multiband Combiner Shelf System Diagram, Drg. # 50-146785
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 77 of 86
5.
INSTALLATION
5.1
Initial Installation Record
When this equipment is initially commissioned, please use the equipment set-up record sheet in
Appendix B. This will help both the installation personnel and AFL should these figures be needed for
future reference or diagnosis.
6.
FAULT FINDING & MAINTENANCE
6.1
General Fault Finding Procedures
In the event that the performance of the system is suspect, a methodical and logical approach to the
problem will reveal the cause of the difficulty.
Transmissions from the main base stations are passed though the system to the mobile radio
equipment; this could be a handheld radio or a transceiver in a vehicle. This path is referred to as the
downlink. The return signal path from the mobile radio equipment to the base station is referred to as
the uplink.
The first operation is to check the alarms of each of the active units and determine that the power
supplies to the equipment are connected and active.
This can be achieved remotely (via CEMS, the RS232 Coverage Enhancement Management System,
if fitted), or locally with the front panel LEDs. The green LED on the front panel should be illuminated,
while the red alarm indicator should be off.
If an alarm is on, then that individual shelf/module must be isolated and individually tested against the
original test specification.
The individual amplifier units have a green LED showing through a hole in their case, which is
illuminated if the unit is working correctly.
If an amplifier is suspect, check the DC power supply to the unit. If no other fault is apparent use a
spectrum analyser to measure the incoming signal level at the input and then after reconnecting the
amplifier input, measure the output level. Consult with the system diagram to determine the expected
gain and compare result.
In the event that there are no alarms on and all units appear to be functioning it will be necessary to
test the system in a systematic manner to confirm correct operation.
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 78 of 86
5.2
Downlink
Confirm that there is a signal at the expected frequency and strength from the base station. If this is
not present then the fault may lay outside the system. To confirm this, inject a downlink frequency
signal from a known source at the master site BTS input and check for output at the remote site
feeder output.
If a signal is not received at the output it will be necessary to follow the downlink path through the
system to find a point at which the signal is lost. The expected downlink output for the given input can
be found in the end-to-end test specification.
5.3
Uplink
Testing the uplink involves a similar procedure to the downlink except that the frequencies used are
those transmitted by the mobile equipment.
5.4
Fault repair
Once a faulty component has been identified, a decision must be made on the appropriate course to
carry out a repair. A competent engineer can quickly remedy typical faults such as faulty connections
or cables. The exceptions to this are cable assemblies connecting bandpass filter assemblies that are
manufactured to critical lengths to maintain a 50-ohm system. Care should be taken when replacing
cables or connectors to ensure that items are of the correct specification. The repair of component
modules such as amplifiers and bandpass filters will not usually be possible in the field, as they
frequently require specialist knowledge and test equipment to ensure correct operation. It is
recommended that items of this type are replaced with a spare unit and the faulty unit returned to AFL
for repair.
5.5
Checking service
Following the repair of any part of the system it is recommended that a full end-to-end test is carried
out in accordance with the test specification and that the coverage is checked by survey.
It is important to bear in mind that the system includes a radiating cable network and base stations
that may be faulty or may have been damaged.
5.6
Service Support
Advice and assistance with maintaining and servicing this system are available by contacting Aerial
Facilities Ltd.
5.7
Tools & Test Equipment
The minimum tools and test equipment needed to successfully service this AFL product are as
follows:Spectrum analyser:
Signal Generator:
Attenuator:
Test Antenna:
Digital multi-meter:
Test cable x 2:
Test cable x 2:
Hand tools:
100kHz to 2GHz (Dynamic range = 90dB).
30MHz to 2GHz (-120dBm to 0dBm o/p level).
20dB, 10W, DC-2GHz, (N male – N female).
Yagi or dipole for operating frequency.
Universal Volt-Ohm-Amp meter.
N male – N male, 2M long RG214.
SMA male – N male, 1m long RG223.
Philips #1&2 tip screwdriver.
3mm flat bladed screwdriver.
SMA spanner and torque setter.
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 79 of 86
5.8
General Maintenance Procedures
Many of the active modules contain semiconductor devices utilising MOS technology, which can be
damaged by electrostatic discharge. Correct handling of such modules is mandatory to ensure their
long-term reliability.
To prevent damage to a module, it must be withdrawn/inserted with care. The module may have
connectors on its underside, which might not be visible to the service operative.
5.9
Module Removal (LNAs, general procedure)
The following general rules should be followed to remove a module:
Remove power to the unit
Remove all visible connectors (RF, DC & alarm)
Release module retaining screws.
Slowly but firmly, pull the module straight out of its position. Take care not to twist/turn the
module during withdrawal. (When the module is loose, care may be needed, as there may be
concealed connections underneath).
5.10
Module Replacement (general)
Carefully align the module into its location then slowly push the module directly straight into its
position, taking care not to twist/turn it during insertion.
Reconnect all connectors, RF, alarm, power etc., (concealed connectors may have to be
connected first).
Replace retaining screws (if any).
Double-check all connections before applying power.
5.11
Power Amplifiers
1)
Remove power to the unit. (Switch off at the mains/battery, or remove DC in connector)
2)
Remove alarm wires from alarm screw terminal block or disconnect multi-way alarm
connector.
3)
Carefully disconnect the RF input and output coaxial connectors (usually SMA)
If alarm board removal is not required, go to step 5.
4)
There is (usually) a plate attached to the alarm board which fixes it to the amplifier, remove its
retaining screws and the alarm board can be withdrawn from the amplifier in its entirety. On
certain types of amplifier the alarm board is not mounted on a dedicated mounting plate; in this
case it will have to firstly be removed by unscrewing it from the mounting pillars, in most
cases, the pillars will not have not have to be removed before lifting the amplifier.
5)
If the amplifier to be removed has a heatsink attached, there may be several different ways it
can have been assembled. The most commonly used method, is screws through the front of
the heatsink to threaded screw holes (or nuts and bolts), into the amplifier within the main
case. If the heatsink is mounted on the rear of the main case (e.g., against a wall in the case
of wall mounted enclosures), then the fixing method for the heatsink will be from within the
case, (otherwise the enclosure would have to be removed from the wall in order to remove the
heatsink).
When the heatsink has been removed, the amplifier may be unscrewed from the main casing by its
four corner fixings and gently withdrawn.
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 80 of 86
Fitting a new power amplifier module will be the exact reverse of the above.
Note: Do not forget to apply fresh heatsink compound to the heatsink/main case joint and also
between the amplifier and the main case.
5.12
Low Power Amplifier Replacement
Disconnect the mains power supply and disconnect the 24V dc supply connector for the LPA.
Disconnect the RF input and output cables from the LPA.
Disconnect the alarm connector.
Remove the alarm monitoring wires from (D type connector) pins 9 and 10.
Remove the LPA module by removing the four retaining screws, replace with a new LPA module and
secure it with the screws.
Connect the RF cables to the LPA input and output connectors. Reconnect the wires to the alarm
board connector pins 9 and 10.
Reconnect the DC supply connector and turn the mains switch on.
Note: Tighten SMA connectors using only a dedicated SMA torque spanner. If SMA connectors are
over-tightened, irreparable damage will occur. . Do not use adjustable pliers to loosen/tighten SMA
connectors.
Also take care not to drop or knock the module as this can damage (or misalign in the case of tuned
passive modules) sensitive internal components. Always store the modules in an environmentally
friendly location
5.13
Module Transportation
To maintain the operation, performance and reliability of any module it must be stored and
transported correctly. Any module not installed in a whole system must be kept in an anti-static bag or
container. These bags or containers are normally identified by being pink or black, and are often
marked with an ESD label. Any module sent back to AFL for investigation/repair must be so
protected. Please contact AFL’s quality department before returning a module.
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 81 of 86
APPENDIX A
Amendment List Record Sheet
Issue No.
Date
18/10/2006
Incorporated by
Page Nos.
Amended
Reason for new issue
CMH
1st Draft
CMH
1st Issue
Document Ref.: 80-283501HBKM
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 82 of 86
Glossary of Terms
Repeater or
Cell Enhancer
A Radio Frequency (RF) amplifier which can simultaneously
amplify and re-broadcast Mobile Station (MS) and Base
Transceiver Station (BTS) signals.
Band Selective
Repeater
A Cell Enhancer designed for operation on a range of channels
within a specified frequency band.
Channel Selective
Repeater
A Cell Enhancer, designed for operation on specified channel(s)
within a specified frequency band. Channel frequencies may be
factory set or on-site programmable.
AC
Alternating Current
AGC
Automatic Gain Control
BBU
Battery Backup Unit
BTS
Base Transceiver Station
CEMS
Coverage Enhanced Management System
C/NR
Carrier-to-Noise Ratio
DC
Direct Current
Downlink (D/L)
RF signals TX from the BTS to the Master Site
FO
Fibre Optic
GND
Ground
ID
Identification Number
LED
Light Emitting Diode
LNA
Low Noise Amplifier
LPA
Low Power Amplifier
MOU
Master Optical Unit
M.S.
Mobile Station
MTBF
Mean Time Between Failures
N/A
Not Applicable
N/C
No Connection
OFR
On Frequency Repeater
OIP3
Output Third Order Intercept Point = RFout +(C/I)/2
PA
Power Amplifier
RF
Radio Frequency
RSA
Receiver/Splitter Amplifier
RX
Receiver
S/N
Serial Number
TX
Transmitter
Uplink (U/L)
RF signals transmitted from the MS to the BTS
VSWR
Voltage Standing Wave Ratio
WDM
Wave division multiplex
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 83 of 86
Handbook Number: 80-283501HBKM
Bronx Justice Centre Radio Repeaters
Page: 84 of 86
GD
APPD
10/05/00
DA TE
RF
A LL DIM E NS IONS A RE IN m m
UNLE S S OTHE RWIS E S TA TE D
MB
CHK D
PL
DRA WN
RF
FR E QU E N C Y P R OG R A MMI N G D A TA
B / W=30 t o 200kH z
BTS
HI
IN
OUT
R.S .A
LE E K Y FE E DE R
E A RTH S TUD
HY B RID COMB INE R
IS OLA TOR
NOTCH FILTE R
CA V ITY RE S ONA TOR
B A ND P A S S FILTE R
MIS C
CROS S B A ND COUP LE R
DIRE CTIONA L COUP LE R
O u tp u ts to r e ce ive r s
IN
IN
COM
COUP LE D
NO DE CIM A L P LA CE ± 1mm
ONE DE CIM A L P LA CE ± 0.3m m
TWO DE CIM A L P LA CE S ± 0.1mm
TOLE RA NCE S
S CA LE
NTS
THIS IS A P ROP RIE TA RY DE S IGN OF A E RIA L FA CILITIE S LTD.
RE P RODUCTION OR US E OF THIS DE S IGN B Y OTHE RS IS
P E RM IS S IB LE ONLY IF E X P RE S S LY A UTHORIS E D IN WRITING
B Y A E RIA L FA CILITIE S LTD.
FIB RE OP TIC
CONNE CTOR
FC/A P C
P LUG
S OCK E T
P LUG & S OCK E T
DE M ODULA TOR
FIB RE -OP TIC
MODULA TOR
FIB RE -OP TIC
CHA NNE L M ODULE
OUT
10dB DIRE CTIONA L COUP LE R
C1 0
6dB DIRE CTIONA L COUP LE R
6 dB DIRE CTIONA L COUP LE R
10dB COUP LE R
COUP LERS
C6
C10
LOW
B A S E TRA NS CE IV E R
S TA TION
TA P P E R/COUP LE R
MIS C
E X P A NS ION HUB
FIB RE M A IN HUB
HUBS
EH
FMH
dB
dB
LO C A L O S C I LLA TO R
MO DEM
CA B LE S
dB
DC
OUT
MISC
FUS E
THIRD ANGLE PROJECTION
CUS TOME R
TITLE
RE LA Y
A NTE NNA S
BS IC (BA S IC S ITE
IDE NTITY CODE )
No
AA
2B
2A
1A
DRA WING.No
90-000001
IS S UE
DE S CRIP TION
TEXT CORRECTION
ECN3165
BLADE ANTENNA ADDED
ORIGINAL ISSUE
-73 = B ELOW A CCE PTA B LE
S IGNA L LE V E L(dB m)
LE V EL (dBm)
-72 = A CCE P TA BLE S IGNA L
-83 = B E LOW ACCE P TAB LE
S IGNA L LE V E L(dBm)
-82 = A CCE P TA B LE S IGNA L
LE V E L (dB m)
22 =
B CCH (B ROADCA S T
CONTROL CHA NNEL)
= RE A DING P OS ITION
SIGNAL KEY
B LA DE A NTE NNA
P A NE L A NTE NNA
RE MOTE A NTE NNA UNIT
A NTE NNA
DIRE CTIONA L A NTE NNA
FLA T P LA TE A NTE NNA
(M OUNTE D A T HIGH LE V E L)
Y A GI A NTE NNA
OM NI A NTE NNA
602 =
RAU
AFL - STANDARD SYMBOLS
DC TO DC CONV E RTE R
A C TO DC P S U
S P LITTE R
N.C. (FILLE D CONTA CT)
Tel : 01494 777000
Fax : 01494 777002
DC
O u tp u ts
( u p to
1 6 wa y)
HY B RID S P LITTE R
S PLITTE RS
N.O. (CLE A R CONTA CT)
COM
IN
OUT
Aerial Facilities Limited
England
LOCA L OS CILLA TOR
DUMM Y LOA D
B I-DIRE CTIONA L A MP LIFIE R
(CE LL E NHA NCE R)
M ODE M
M ONITORING CONTROLLE R
A .G.C
A TTE NUA TOR (FIX E D)
A TTE NUA TOR (V A RIA B LE )
A M P LIFIE R
MIS C
C0-A X CA B LE
7/8" DIA
C0-A X CA B LE
1/2" DIA
CA T 5 CA B LE
RA DIA TING CA B LE
JUM P E R
CA B LE 1/2"
24/FIB RE OP TIC CA B LE /LINK
8/FIB RE OP TIC CA B LE /LINK
MO NITO RING
CO NTRO L L ER
AG C
DA TE
28/07/04
26/01/04
21/06/00
23/05/00
STANDARD FOR
ALL AIRPORTS
BY
PL
PL
PL
PL
STANDARD EXCEPT
FOR AIRPORTS
(SEE BELOW )
Key to AFL Drawing Symbols
EC Declaration of Conformity
In accordance with BS EN ISO/IEC 17050-1&-2:2004
Aerial Facilities Limited
Aerial House
Asheridge Road
Chesham
Buckinghamshire HP5 2QD
United Kingdom
DECLARES, UNDER OUR SOLE RESPONSIBILITY THAT THE FOLLOWING PRODUCT:
PRODUCT PART NO[S]: 50-146501, 50-146601, 50-146701
PRODUCT DESCRIPTION: Radio Repeater Equipment
IN ACCORDANCE WITH THE FOLLOWING DIRECTIVES:
1999/5/EC
and
The Radio & Telecommunications Terminal Equipment Directive Annex V
its amending directives
HAS BEEN DESIGNED AND MANUFACTURED TO THE FOLLOWING STANDARD[S] OR
OTHER NORMATIVE DOCUMENT[S]:
BS EN 60950
Information technology equipment.
Safety. General requirements
ETS EN 301 489-1 EMC standard for radio equipment and services.
Part 1. Common technical requirements
I hereby declare that the equipment named above has been designed to comply with the relevant
sections of the above referenced specifications. The unit complies with all essential requirements
of the Directives.
SIGNED
B S BARTON
TECHNICAL DIRECTOR
DATE: 12/01/2007
Registered Office: Aerial House, Asheridge Road, Chesham, Buckinghamshire, HP5 2QD England Registered No. 4042808 (England)
www.aerialfacilities.com
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 85 of 86
APPENDIX B
Initial Equipment Set-Up Calculations
General Information
Site Name:
Date:
Client Name:
AFL Equip. Model No.
Antenna Systems
Model
Gain
Azimuth
Comments
Type
Loss
Length
Comments
A - Service Antenna
B – Donor Antenna
C – Service Feeder
D – Donor Feeder
Initial Parameters
E – CE Output Power
F – Antenna Isolation
G – Input signal level from donor BTS
Operating Voltage
dBm
dB
dBm
Downlink Calculations
Parameter
Input signal level (G)
CE max. o/p power (E)
Gain setting
Isolation required
Service antenna gain (A)
Service antenna feeder loss (C)
Effective radiated power (ERP)
Attenuator setting
Comments
Value
dBm
dBm
dB
dB
dB
dB
dBm
dB
E-G
(Gain + 10dB)
E+A-C
CE gain-gain setting
If the input signal level in the uplink path is known and steady, use the following calculation table to
determine the gain setting. If the CE features Automatic Gain Control the attenuator should be set to
zero and if not, then the attenuation setting for both uplink and downlink should be similar.
Uplink Calculations
Parameter
Input signal level
CE max. o/p power (E)
Gain setting
Required isolation
Donor antenna gain (B)
Donor antenna feeder loss (D)
Effective radiated power (ERP)
Attenuator setting
Comments
Value
dBm
dBm
dB
dB
dB
dB
dBm
dB
E+B-D
(CE gain-gain setting)
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM
Page: 86 of 86

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