User's Manual
Table Of Contents
- 1. General Description
- 2. Installation and Operation
- 3. Options
- 3.1 T01 Programmable Channel Spacing
- 3.2 T02 Programmable CTCSS encoder/decoder
- 3.3 T03 Programmable DCS/CTCSS encoder/decoder
- 3.4 T05 Balanced and Isolated VF plus E&M
- 3.5 T06 Simplex Changeover Relay
- 3.6 T08 VF Delay
- 3.7 T09 300Hz Upgrade HPF Filter
- 3.8 T10 Power Save Mode
- 3.9 T11 Combined Options
- 3.10 T12 External Reference Oscillator Input
- 3.11 T13 Local Speaker, Mic Socket and Front Panel Mute
- 3.12 T14 Local Channel Change
- 3.13 T16 1PPM Frequency Stability
- 3.14 U69 Extended Temperature Range Verification
- 3.15 T19/26 Line Interface Board.
- 3.16 T29 Balanced and Isolated VF plus E&M
- 3.17 T31 Network Adapter
- 3.18 T34 Ethernet option
- 3.19 T36 Option - TX Ref Oscillator input and Modulator
- 6. MX800 Base Station Fault Finding Procedure
- 7. Appendices
- 7.1 MX800 Interface Connections
- 7.2 CN2 DB9 Female Monitor Connector
- 7.3 CN3 DB25 Female Digital I/O Connector
- 7.4 MX800 Specifications
- 7.5 Channel Select DIP Switch Settings
- 7.6 MX800 Model Number Configuration Guide
- 7.7 MX800 System Applications
- 7.7.1 Conventional base station/repeater
- 7.7.2 Link transceiver
- 7.7.3 Data transceiver
- 7.7.4 Paging transmitter
- 7.7.5 Trunking Base Station
- 7.7.6 Systems base
- 7.7.7 Repeater with Morse ID
- 7.7.8 Simplex base station
- 7.7.9 Duplicated base station
- 7.7.10 Power Save base station
- 7.7.11 Tone key base station
- 7.7.12 Voting base station
- 7.7.13 Simulcast base station
- 8. Superseded Technical Information
- 9. Drawings
Technical Manual Options
Method:
1. Remove the cover to the MX800 radio.
2. Remove the rear connector label from the back panel of the MX800.
3. Punch out the small indented rectangle on the rear LHS of the MX800.
4. Remove the connectors from the Motherboard headers SKE, SKF and
SKH.
5. Carefully locate the T04 or T05 option board into position at the rear
RHS of the radio with the RS232 cable lying underneath the option
board.
6. Secure the option board with the qty3 3x5mm machine screws
7. Install the 10way Monitor cable to SK4 on the option board.
8. Install the 10way cable Assy to SK3 on the option board and to SKE on
the Motherboard.
9. Install the 16way VF cable to SK2 on the option board.
10. Install the 16way cable Assy to SK1 on the option board and to SKH on
the Motherboard.
11. Reconnect the 25way Digital Interface cable to SKF on the Motherboard.
12. Install the rear connector layout label onto the PA heatsink underneath
the RF ‘N-type’ connector
MX800 Testing:
1. Connect a Communications Test Set via the RIB to the MX800 balanced
audio RJ45 connector as per paragraph 3.4 of the MX800 Technical
Manual.
2. Set the switches on the RIB to measure balanced audio and E&M.
3. Set the test set to measure Rx line level and adjust RV5 or RV5B for the
level that is require if necessary.
4. Set the test set to measure TX modulation level and set the audio
generator output level as per the required line level.
5. PTT the MX800 and measure the TX modulation depth. Adjust RV4 or
RV4A for the modulation depth that is require if necessary.
6. To check the Rx isolated mute output, switch the RF level on the
Comm.’s test set to ON. The Mute LED on the RIB should be ON. The
LED should go OFF when the RF output from the test set is switched
OFF.
7. Replace the MX800 cover.
© SPECTRA ENGINEERING 2008 Revision 4.3.1B
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