Handbook
Table Of Contents
- AMENDMENT LIST RECORD SHEET
- INTRODUCTION
- 1.SAFETY CONSIDERATIONS
- 2.OVERVIEW/SYSTEM DESCRIPTION
- 3.SPECIFICATION
- 3.150-063701 Parts Lists
- 3.1.1Base Antenna Side UHF Duplex/PA Shelf 50-063702 Parts List
- 3.1.2Downlink UHF 5 Channel Shelf 50-063703 Parts List
- 3.1.3Uplink UHF 4 Channel Shelf 50-063704 Parts List
- 3.1.4Tunnel side UHF Duplex/PA Shelf 50-063705 Parts List
- 3.1.5UHF Simplex Shelf 50-063706 Parts List
- 3.1.6Power Supply Shelf 50-063707 Parts List
- 3.2Technical Specification
- 3.3Mechanical Specification
- 3.150-063701 Parts Lists
- 4.SYSTEM DRAWINGS
- 4.1Drg. No. 50-063751, Channelised Cell Enhancer Rack Layout Drawing
- 4.2Drg. No. 50-063781, Channelised Cell Enhancer System Diagram
- 4.3Drg. No. 50-063792, Base Side Duplex Shelf Outline Drawing
- 4.3Drg. No. 50-063793, Downlink Channels Shelf Outline Drawing
- 4.4Drg. No. 50-063794, Uplink Channels Shelf Outline Drawing
- 4.5Drg. No. 50-063795, Tunnel Side Duplexer Shelf Outline Drawing
- 4.6Drg. No. 50-063796, UHF Simplex Shelf Outline Drawing
- 4.7Drg. No. 50-063797, Power Supply Shelf Outline Drawing
- 5.SUB-UNIT MODULES
- 5.1UHF Duplex Shelf 50-063702
- 5.25 Channel UHF Downlink Shelf 50-063703
- 5.3UHF Uplink 4 Channel Shelf 50-063704
- 5.4UHF Duplex/PA Shelf 50-063705
- 5.5UHF Simplex Channel Shelf 60-063706
- 5.6Power Supply Shelf 50-063707
- 6.INSTALLATION
- 7.MAINTENANCE
- APPENDIX AINITIAL EQUIPMENT SET-UP CALCULATIONS
Denver Channelised CE
User/Maintenance Handbook
Handbook Nō.-50-063708HBKM Issue No:-2
Date:-03/11/2003
Page:-
41 of 51
5.2.5 12V Relay Board (20-001601)
5.2.5.1 Description
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 RL1 and RL2, 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.
Note that the board is available for different voltages (12 or 24V) depending on the type of
relays fitted at RL1 and RL2.
5.2.5.2 Technical 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
7
operations
Relay approval: BT type 56
Connector details: Screw terminals
operational: :-30°C to +60°C
Temperature range
storage: :-40°C to +70°C