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 Superseded Technical Information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
Pin No Function Comment
8 PB1 5V CMOS input
7 PB2 5V CMOS input
6 Hook/monitor For quiet base
5 Mic ETH
4 Mic VF in. High or low level Set JMP22 IN for low gain
dynamic Mic
3 Mic PTT. Pulled to +5V via 10K
2 +5 volts out Current limited via 220R
1 Low level muted RX VF Fixed level out.
Table 3-6 MX800 Mic Socket Pinout
The RJ45 pins are numbered as shown in Figure 3-4 below.
1 .................. 8
Figure 3-8 RJ45 socket viewed from front of MX800
Refer circuit diagram CS001-6 sheet 6 of 6
3.11.2 Installation
CAUTION: COMPONENTS USED ARE STATIC DAMAGE SENSITIVE!
Components Required:
1. Front Panel and matching Handles. Qty-1
2. Loudspeaker. Qty-1
3. MCP6002D Integrated Circuit. Qty-3
4. TDA8551 Integrated Circuit. Qty-1
5. RJ45 PCB mounted Microphone socket. Qty-1
6. 16mm Volume Pot or SPDT momentary Volume switch. Qty-1
7. 100kohm 10turn PCB mounted squelch potentiometer. Qty-1
8. 100kohm SMD potentiometer. Qty-1
9. Jumper link connector. Qty-1
© SPECTRA ENGINEERING 2008 Revision 4.3.1B
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