User`s manual

100-M0056X2B 13 of 28
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RF, audio, video, power and RS-232 signals. An optional LCD control front panel is also available.
Inline camera mount is shown in Figure 3.
6.2.1.1 RF Output
The MDT in line camera enclosure uses a female N type connector (flange mount) for its
‘RF Output’ port.
Note: Transmitters should not be powered on without a load. Doing so could
cause the output PA to stop working.
6.2.1.2 I/O
The ‘I/O’ connector is a female, DB-15. It is used to provide the interface for RS-232
signals (control and monitoring). GMS MDLB Configurator software program (as
explained in section 6) makes use of the RS232 control lines, pins 2, 3 and 5 of the DB-15
connector. The RS-232 channel utilizes a 3-wire configuration. The pin out for I/O
connector is shown in Table 2.
A USB connector is currently provided with the external serial cable for future update
capabilities which are currently under development. The USB will be an alternate
method of interfacing to the PC if DB-9 connectors are not available.
Table 3 - I/O DB-15 Connector Pin Out
Pin Signal Notes
1 +12Vdc
2 RS232-Rx (CTRL) Relative to MDT (i.e., control data is input on this pin)
3 RS232-Tx (CTRL) Relative to MDT (i.e., control data is output on this
pin)
4 Not connected
5 RS232-GND Common ground for both RS232 Data and Control
lines
6 I^2C_D
7 I^2C_C
8 USB Reset
+5V
9 USB Data -
10 USB Data+
11 USB GND
12 Not connected
13 RS232-Tx (DATA)
14 RS232-Rx (DATA)
15 RS232-GND
6.2.1.3 Video Input
The MDT –B in-line camera enclosure uses female BNC connectors for video input.
Component, Composite or S-Video input is accepted (see section 6 for setting video
input type). J3 BNC connector marked “Y/COMP” is a dual use input connector; a)
Composite Video or b) Luminance when used with Component video. J2 BNC connector
marked “C/Pr” is a dual use input connector; a) Chroma when used with S-Video or b) Pr,
the red component minus the luminance information used with Component Video. J8