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 Superseded Technical Information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
MX800 Transceiver Options
© SPECTRA ENGINEERING 2008 Revision 4.3.1B
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Note that this options PCB is also used for T08, VF Delay and T10, the Low
Standby Current Mode and all three are independent and may be used
separately or together. If the option PCB is ordered for one particular option
it may or may not be populated for the other options.
JMP Function/Description Option Active Option Disabled
JMP 1 Low standby current mode
switched exciter power
Out In
JMP 2 Low standby current mode
switched receiver power
Out In
JMP 3 300Hz Elliptic filter 1-2 2-3
JMP 4 RX audio delay 2-3 1-2
Table 3-3 Option PCB Link Settings
3.7.2 Installation
Components Required:
1. Option board ‘MXOPT’ fitted for 300Hz HPF Option. Qty-1
2. 16way female-to-female IDC Cable Assy. Qty-1
3. 3x20mm Standoff posts. Qty-4
Test Equipment Required:
1. Communications Test Set
2. MX800 Radio Interface Box
Method:
1. Remove the cover to the MX800 radio.
2. Remove qty4 of the Motherboard securing screws as shown.
3. Install the qty 4 3x20mm standoff posts into the vacant screw positions.
4. Remove the Link jumpers off connector SKK.
Motherboard
3x5mm machine
screws to be removed