Comtech EF Data SDM-309B - Manual (Page 97)

M&C and Interfaces SDM-309B Satellite Modem
4-4–20 MN/U-SDM309B Rev. #
GROUND GND 1, 19, 20, 37
TX OCTET TXO-A
TXO-B 3
21
SEND DATA SD-A
SD-B 4
22
SEND TIMING ST-A
ST-B 5
23
RECEIVE DATA RD-A
RD-B 6
24
RECEIVER TIMING RT-A
RT-B 8
26
EXTERNAL CLOCK EXC-A
EXC-B 15
33
REQUEST TO SEND RTS-A
RST-B 7
25
CLEAR TO SEND CTS-A
CTS-B 9
27
TERMINAL TIMING TT-A
TT-B 17
35
RX OCTET RXO-A
RXO-B 16
34
RECEIVER READY RR-A
RR-B 13
31
DATA MODE DM-A
DM-B 11
29
4.2.1.9.3 V.35 Interface (J3)
The V.35 interface is provided of a 35 pin CNV connector accessible from the front of
the breakout panel. Screw locks are provided for mechanical security of the mating
connector.
Signal Function Name Pin Number
GROUND GND A, B
REQUEST TO SEND RST C
CLEAR TO SEND CTS D
DATA SET READY DSR E
RECEIVE LINE SIGNAL
DETECT RLSD F
SEND DATA SD-A
SD-B P
S
RECEIVE DATA RD-A
RD-B R
T
SERIAL CLOCK TRANSMIT
EXTERNAL SCTE-A
SCTE-B U
W
SERIAL CLOCK RECEIVE SCR-A
SCR-B V
X
SERIAL CLOCK TRANSMIT SCT-A
SCT-B Y
AA
EXTERNAL CLOCK EXC-A
EXC-B CC
DD
4.2.1.9.4 Engineering Service Channel