Comtech EF Data SDM-300L3 - Manual (Page 338)

SDM-300L3 Satellite Modem Revision 0
Specifications MN/SDM300L3.IOM
14–32
14.12.2 V.35 Specification V.10, V.11 Specification, Circuit Supported
Circuit Supported SD, SCT, SCTE, RD, SCR, DSR, RLSD, RTS, CTS, MC,
DSR, LL
Driver Amplitude (RD, SCR, SCTE, CTS,
RLSD, DSR, SCTE) ± 0.5V-PK, ± 20% differential, into 100 Ω
Amplitude (SCT, SD, RTS, LL, MC) ± 0.2V Minimum into 100 Ω
Polarity (SD, SCT, SCTE, RD, SCR) 1 (True) when B positive with respect to A
0 (False) when A positive with respect to B
Polarity (RTS, CTS, DSR, RLSD) 1 (True) when < -0.2V with respect to ground
0 (False) when > +0.2V with respect to ground
Phasing (SCTE, SCR) 0 to 1 (False-to-True) transition nominally in center of
data bit
Symmetry (SCT, SCTE, SCR) 50%, ± 5%
SD-A, SD-B Send Data
SCT-A, SCT-B Serial Clock Transmit
RD-A, RD-B Receive Data
SCR-A, SCR-B Serial Clock Receive
SCTE-A, SCTE-B Transmitter Signal Timing
MC-A, MC-B Master Clock
RTS Request to Send
CTS Clear to Send
DSR Data Set Ready
RLSD Receive Line Signal Detect
LL Local Loopback
MF Mod Fault (ttl)
DF Demod Fault (ttl)
Note: All other specifications are per CCITT V.10 and V.11.