Comtech EF Data MD2401 - Manual (Page 82)

MD2401 L-Band Multi Demod Installation and Operation Manual Rear Panel Interfaces
MN-MD2401 5–2
Revision 7
5.2 Power
The unit is powered from a 100 – 240 VAC, 50 – 60 Hz, 1A source. The switch located on the left
hand side (as viewed from the rear of the unit) turns power on and off to the unit. A chassis
ground connection can be made at the #10-32 threaded stud located to the lower right of the AC
Power Connector.
5.3 Terrestrial Data & Terminal Control Interface (J1)
The J1 Interface supports RS-422 synchrounous Terrestrial Data and RS-232 Remote Terminal
Communications. It is a Female 25-Pin D-Sub Connector. Refer to Table 5-1 for connector
pinouts and Section 4.2 terminal setup and menu descriptions.
Radyne supplies an interfacing Y cables that standardize the terrestrial interface to RS-530 or
RS-449 connection. The Y cable includes a DB 9 connector for Terminal communications that
allows the user to connect to a computer or terminal interface.
• RS530 Y cable is CAR5941
• RS449 Y cable is CA/4263
Table 5-1A. Terrestrial Data Interface Port (J1) - 25-Pin ‘D’ Female
Pin No. Signal Name Description Direction
1 Shield ---
3 RXD-A Receive Data Output
6 DSR Data Set Ready (Always True) Output
7 GND ---
8 CD-A Demod is Phase Locked Output
9 RXC-B Receive Clock Output
10 CD-B Demod is Phase Locked Output
16 RXD-B Receive Data Output
17 RXC-A Receive Clock Output
Table 5-1B. Terminal Interface Port (J1) - 25-Pin ‘D’ Female
Pin No. Signal Name Description Direction
18 TX-232 RS-232 (Terminal) Input
20 Unused ---
21 RX-232 RS-232 (Terminal) Output
22 Unused ---
23 GND ---
25 Unused ---