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 Superseded Technical Information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
Technical Manual Options
MX800 Testing – Rx Mute:
1. Connect a Communications Test Set (CTS) and the necessary MX800 I/O
connection.
2. Set the test set to measure SINAD and reduce the RF generator until 8db
SINAD is reached.
3. Adjust the front panel Mute control so that the RX just goes into the
muted condition.
Testing in now complete.
3.12 T14 Local Channel Change
3.12.1 Description
For applications needing a user interface at the base station the MX800 is
available with the Local Control option. The full implementation is described
in section 1.1.1.2, this section describes the part fitted under option T14.
Channel Change Control
Twin push wheel switches can be optionally fitted to the front panel to allow
selection of the operating channel. When fitted this switch is wired to the
channel select pins on SKF/E, the rear channel select port, and replaces the
channel select function normally accessible on the rear digital I/O connector.
99 channels are selectable. Refer to section 2.2.2.3 for more details on
alternative channel select methods.
3.12.2 Installation
Components Required:
1. Local Channel Change Switch and Cable Assembly. Qty-1
2. Front Panel and matching Handles. Qty-1
Test Equipment Required:
1. Communications Test Set
2. MX800 Radio Interface Box
© SPECTRA ENGINEERING 2008 Revision 4.3.1B
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