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 Superseded Technical Information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
3.16 T29 Balanced and Isolated VF plus E&M
3.16.1.1 Description
Option T29 provides the balanced and isolated VF I/O as well as isolated E
(PTT) and M (Mute) leads, as per option T05. The option has been design to
be compatible with Omitronics™ interface connections.
Note Jumpers referred to in the table below are those on this option PCB.
The E lead is opto isolated and may be asserted by applying a DC voltage
between 5V and 48V with any polarity between CN9 Pins 1&2 (JMP1 in
position 2-3).
Provision is also made to internally source the activation voltage (+12V DC)
in which case the E lead is asserted by grounding CN9 Pin2 (JMP1 in
position 1-2)
The M lead is relay isolated and the common and normally open contacts are
brought out via CN9. If the internal +12V DC is being used as the activation
voltage for the E lead (JMP3 in position 1-2) then the normally closed contact
is also available at CN9 pin 8. The relay contacts are rated at 500mA.
Figure 3-9 MX800 T29 otpion board
© SPECTRA ENGINEERING 2008 Revision 4.3.1B
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