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 Superseded Technical Information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 Appendices
© SPECTRA ENGINEERING 2008 Revision 4.3.1B
88
Note When the front panel channel select option is fitted, input port should
not be used from the external connector CN3 as it is wired to the
thumbwheel switch.
7.3.1 CN4 DB9 Male RS232 Connector
RS232 serial port to the MX800. It may be optionally located on the front
panel of the MX800. Only 3 wires are required for the MX800 TXD, RXD
and ground. The function of TXD and RXD pins can be interchanged by
changing jumpers JMP10 and JMP11. Table 7-5 CN4 Connector Jumpers
below illustrates this.
Name Function JMP 10/11
(Referred to MX800) 2-3 1-2
CN4 Pin no CN4 pin no
TD Transmitted Data 3 2
RD Received Data 2 3
SG Signal Ground 5 5
Table 7-5 CN4 Connector Jumpers
Note Both JMP10 and JMP11 must be set to the same positions. In
position 2-3 the radio will require a serial cable with the TXD and
RXD lines cross-connected. In position 1-2 a one to one cable is
required.
7.3.2 CN6 Simplex Relay/External Reference
This is an N type connector, which acts as the RF I/O port for simplex
operation. Optionally the RX input for duplex operation may use this port
instead of the BNC port or if an external reference is required this port can be
used.