Data Interfaces; Automatic Uplink Power Control (Aupc) - Comtech EF Data CDM-425 Installation And Operation Manual

1.4.3

Data Interfaces

Primary Data
G.703 (Tx In, Drop Out,
Insert In, Rx Out)
Auxiliary G.703
(used for Quad D&I
modes)
External Reference In/Out As an input:
Modem Alarms
Remote Control
PMSI Interface
1:1 Control
Ethernet
1.4.4

Automatic Uplink Power Control (AUPC)

Operating Mode
Target Eb/No range
Max AUPC range
Monitor functions
Introduction
RS-422/EIA-530 DCE (Rates up to 14 Mbps)
(also supports X.21 DCE & DTE up to 2.048 Mbps)
V.35 DCE (Rates up to 14 Mbps)
1.544 Mbps T1 (Balanced 100 Ω)
2.048 Mbps E1 (unbalanced 75 Ω or balanced 120 Ω)
Note: All Drop and Insert modes are a FAST option.
Two additional 2.048 Mbps E1 ports (balanced 120 Ω)
Note: All Drop and Insert modes are a FAST option.
1, 2, 5 or 10MHz -6dBm to +10dBm (nominal 50/75 Ω)
As an output:
10MHz, 2.7 volts peak-to-peak +/- 0.4 volts, low impedance output
Relay outputs (Tx, Rx & unit faults)
Demodulator I & Q test outputs (constellation)
Demodulator Rx Signal Level output (0 to 10 volts)
External carrier off input
RS-232 or RS-485 modem control and monitoring
Pre-mapped Symbol interface
(used by DoubleTalk Carrier-in-Carrier function)
Control interface for CRS170A/CRS180 1:1 Redundancy unit
4 ports of 10/100 BaseT auto-sensing full/half duplex Ethernet
Requires Closed Network Framed mode (EDMAC, D&I++, or Enhanced D&I) for transport of
Eb/No information from remote modem (EDMAC can be enabled or disabled)
0 to 14.9 dB at remote demod (default is 4.0 dB)
0 to 9 dB (default is 3 dB)
Remote demod Eb/No
Tx power level increase
(front panel or via remote control interface)
CDM-425 Advanced Satellite Modem
1–26
Revision 0
25-pin D-sub (female)
9-pin D-sub (female)
or BNC (female)
9-pin D-sub (female)
BNC (female)
15-pin D-sub (male)
9-pin D-sub (male)
9-pin D-sub (female)
9-pin D-sub (male)
RJ-45
MN-CDM-425