Eia-449/Eia-422 Mil-188-114A Specification; G.703 (Optional With Overhead Card - Comtech EF Data SDM-300A Installation And Operation Manual

Specifications
C.7.2.3

EIA-449/EIA-422 Mil-188-114A Specification

Circuit Supported
Amplitude (RD, RT, ST, DM, RR)
Impedance (RD, RT, ST, DM, RR)
Impedance (SD, TT, MC)
Phasing (RD, RT)
Symmetry (ST, TT, RT)
SD-A, SD-B
ST-A, ST-B
RD-A, RD-B
RS-A, RS-B
RT-A, RT-B
CS-A, CS-B
DM-A, DM-B
RR-A, RR-B
TT-A, TT-B
MC-A, MC-B
MF
DF
C.7.2.4

G.703 (Optional with Overhead Card)

Primary Data Circuits Supported
Interface Type
Data Rates
Pulse Width
SD Amplitude
RD Amplitude
Pulse Mask
Jitter Attenuation
Line Code
C–44
EIA-449/EIA-422 Mil-188-114A Specification
SD, ST, TT, RD, RT, DM, RR, RS, CS, MC
± 2V differential into 100Ω
Less than 100Ω, differential
4kΩ
True when B is positive with respect to A
False when A is positive with respect to B
False-to-true transition of RT nominally in center of RD data
bit
50%, ± 5%
Circuit Assignments
Send Data
Send Timing
Receive Data
Request to Send
Receive Timing
Clear to Send
Data Mode
Receiver Ready
Terminal Timing
Master Clock
Mod Fault (ttl)
Demod Fault (ttl)
G.703 Specification
T1 SD, RD
E1 SD, RD
Transformer coupled symmetrical pair
T1 1544 kbit/s, ± 100 bit/s
E1 2048 kbit/s, ± 130 bit/s
T1 324, ± 50 Ns
E1 244, ± 25 Ns
T1 3V +0.3/-1.5V-pk into 100Ω
E1 3V +0.3/-1.5V-pk into 120Ω
T1 3V +0.3/-1.5V-pk into 100Ω
E1 3V +0.3/-1.5V-pk into 120Ω
T1 G.703.2
E1 G.703.6
T1 G.824
E1 G.823
AMI (T1 or E1)
B8ZS (T1 only)
HDB3 (E1 only)
SDM-300A Satellite Modem
Rev. 4