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 Superseded Technical Information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
2. JMP2 OUT
3. JMP3 OFF (2-3)
4. JMP4 OFF (1-2)
MX800 Controller Setup:
1. The Power Save option is activated in the MXTOOLS ‘Configuration’
heading. Within the ‘Power Save Mode Settings’ folder select ‘Power
Save Option Board Installed’.
2. Setup the power save mode settings as required.
3. Download the Configuration change to the MX800.
MX800 Testing:
1. Connect a Communications Test Set via the RIB to the MX800.
2. Set the switches on the RIB to Line Audio and E&M.
3. Check that all the Transmit parameters (i.e. TX power, modulation, freq.
error) are correct. Correct any anomalies where necessary.
4. Set the test set to measure Rx parameters and ensure that the Receiver is
operating correctly.
5. Replace the MX800 cover.
3.9 T11 Combined Options
This option combines the functions and features of T08, and T10
3.10 T12 External Reference Oscillator Input
Please also see section 3.19 and 3.13
3.12.1 Description
The MX800 receiver and transmitter modules have separate reference
oscillators. In normal operation to achieve a low frequency transmitter
modulator frequency response to DC, the MX800 normally uses a two-point
modulation method. For two-point modulation, the TX reference oscillator
and the VCO are both modulated together and in phase. Option T12 provides
for the TX reference frequency to be externally injected. An SMB connector
is fitted to the exciter and an internal cable is provided from there to a chassis
mount N Type connector into which the external reference frequency is
injected. As two-point modulation is not possible with this configuration, the
transmitter frequency response is only specified to 67Hz for this option.
The N Type connector will be required to be used for the RX I/P in which
case the BNC becomes the external reference I/P.
© SPECTRA ENGINEERING 2008 Revision 4.3.1B
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