Specifications

SDM-300L3 Satellite Modem Revision 0
Specifications MN/SDM300L3.IOM
15–32
15.12.2 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 100Ω
Amplitude (SCT, SD, RTS, LL, MC)
± 0.2V Minimum into 100Ω
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.