Chapter 15. Summary Of Specifications; Modulator - Comtech EF Data CDM-600 Operating Instructions Manual

15.1

Modulator

Modulation
Symbol rate range
Data rate range
Operating modes
Transmit filtering
Chapter 15. SUMMARY OF
BPSK, QPSK, OQPSK, 8-PSK, 8-QAM and 16-QAM
4.8 ksps to 10.0 Msps
See Section 14.9
Open Network, per Intelsat IESS-308/309/310/314 (IDR, IBS/SMS)
E1/T1 Drop and Insert
Transparent, Closed Network, IESS-315 (VSAT Turbo)
Proprietary EDMAC framed mode:
* 5% overhead - all modes except BPSK Turbo, Rate 1/2 OQPSK Turbo, and data rates < 2.048 Mbps
* 1.5% overhead - Rate 21/44, 5/16 Turbo, Rate 1/2 OQPSK Turbo, and all other rates >2.048 Mbps
R-S Outer Codec
Turbo Product Codec – Low Rate, 1
* Rate 5/16 BPSK
* Rate 21/44 BPSK
* Rate 3/4 QPSK/OQPSK/8-PSK/16-QAM
Turbo Product Codec – High Rate, 2
* Rate 21/44 BPSK
* Rate 5/16 BPSK
* Rate 1/2 QPSK/OQPSK (exact Code Rate is actually 0.477)
* Rate 3/4 QPSK/OQPSK/8-PSK/16-QAM
* Rate 7/8 QPSK/OQPSK/8-PSK/16-QAM
* Rate 0.95 QPSK/OQPSK/8-PSK (exact Code Rate is actually 0.944)
LDPC Codec (optional – includes all 2
* Rate 1/2 BPSK/QPSK/OQPSK
* Rate 2/3 QPSK/OQPSK/8-PSK/8-QAM
* Rate 3/4 QPSK/OQPSK/8-PSK/8-QAM/16-QAM
Automatic Uplink Power Contol (AUPC) mode
High Rate ESC (FAST, with Firmware version. 1.3.1 or higher)
ESC++ (with firmware version 2.0.1 or higher)
Drop & Insert ++ (with firmware version 1.5.0 or higher)
Per INTELSAT IESS-308 (FIR digital filter implementation)
SPECIFICATIONS
st
Generation (optional):
nd
Generation (optional):
nd
Generation TPC modes):
15–1