Comtech EF Data CST-5000 - Manual (Page 52)

Single Thread System Installation CST-5000 C-Band Satellite Terminal
2–24 Rev. 9
2.5.6 Serial Remote Control (J6)
The remote connector on the RFT is used to interface the M&C functions to a remote
location. This interface can be either EIA-232 or EIA-485.
When using an EIA-485 interface, the transmit and receive signals are able to
accommodate either type of remote equipment pinouts. As long as the polarities of the
remote equipment TX and RX signals are correct, this remote interface will be
completely compatible.
Refer to Table 2-3 for a list of pinouts for the J6 connector.
For standard EIA-232 or EIA-485 applications, an adapter cable must be used to connect
the 26-pin connector (J6) to a standard 9-pin D.
Refer to Figure 2-5 for an illustration of the adapter cable and pinouts.