User's Manual Part 2
Table Of Contents
- Maintenance
- Introduction
- Scheduled Maintenance
- Unscheduled Maintenance
- Introduction
- Tools, Materials and Test Equipment Required
- T6T VHF Amplifier Procedures
- Top and Bottom Covers
- Removing and Refitting the Interface Module
- Removing and Refitting the PSU Regulation Module
- Removing and Refitting the Power Supply Modules
- Removing and Refitting the Combiner BIT Module
- Removing and Refitting the PA Modules
- Removing and Refitting the Front Panel PCB
- Removing and Refitting the Cooling Fans
- T6T VHF Drive Assembly Procedures
- Removing the Top Cover
- Removing and Refitting the Processor Module
- Removing and Refitting the PSU Regulation Module
- Removing and Refitting the Drive Module
- Removing the Bottom Cover
- Removing and Refitting the PA Control Module
- Removing and Refitting the Power Supply
- Removing and Refitting the Front Panel PCB
- Virtual Front Panel (VFP)
T6T 300 Watt VHF Transmitter Page 91 Installation
MARC Data Connector
The MARC Data connector is an 8-way RJ48 socket. It can be used as an alternative to the MARC
connector for data connections. The connector pin-out is shown below and detailed in Table 20.
Table 20 MARC Data Connector
Pin Number Signal Characteristic
1
2
Data in (-)
Data in (+)
RS422 differential asynchronous data, 9600 baud,
8 data bits, 1 stop bit, no parity, no handshaking.
3 Not connected -
4
5
Data out (+)
Data out (-)
RS422 differential asynchronous data, 9600 baud,
8 data bits, 1 stop bit, no parity, no handshaking.
6 Remote supply on/off 0 V to switch off.
Note: Rear panel switch must be in the On position for
this function to operate.
7 Ground 0 V.
8 Output supply This output is between 21.6 and 32 Vdc (nominally
28 V) fused at 500 mA.
Pin 1
RJ48 Plug
Numbering is shown looking from the top of the connector.
The top is being viewed when the lever is on the bottom.