Comtech EF Data RCF6001 User Manual

Page 19

RCF6001 Satellite Terminal

Installation

TM082 - Rev. 1.0

Page 2-7

Demod Fault - Open
Collector

Output

CS-B

Clear to Send B (+)

Output

11*

DM-A

Data Mode A (-)

Output

29*

DM-B

Data Mode B (+)

Output

RR-A

Receiver Ready A (-)

Output

RR-B

Receiver Ready B (+)

Output

BAL EXC-
A

External Clock A (-)

Input

BAL EXC-
B

External Clock B (+)

Input

RX-0-A

Receive Octet A (-)

Output

RX-0 B

Receive Octet B (+)

Output

TT-A

Terminal Timing A (-)

Input

TT-B

Terminal Timing B (+)

Input

1, 19, 20, 37

GND

Signal Ground

*NOTE: The DMD2401 Satellite Modem has the capability of constantly outputting the DM/DSR
signal. (DSR and DM are actually the same signal). The modem is always in the condition of
being able to pass data. DTR input to the modem is not necessary. The DM/DSR output of the
modem is located on pins 11 and 29 as shown above.

J6 – Ext. Ref. IN

This port is used for injecting an External Reference Frequency into the modem. The DMD2401
master oscillator is locked to this source. All internally generated frequencies within the modem
will attain the stability of the applied external reference. The external reference must meet the
following parameters:

Frequency:

256 KHz to 10 MHz in multiples of 8 KHz

Amplitude:

0.2 V p-p to 5 V p-p

Type:

Sinewave or Squarewave