Premier Mounts CDM-600 specifications Data Interfaces

CDM-600 Satellite Modem				Revision 7
Summary of Specifications				MN/CDM600.IOM
LDPC CODEC BER		8-PSK Rate 2/3 LDPC	8-PSK Rate 3/4 LDPC
Rate 2/3 8-PSK		Guaranteed Eb/No:	Guaranteed Eb/No:
Rate 3/4 8-PSK		(typical value in	(typical value in
(With two adjacent	For:	parentheses)	parentheses)
carriers, each 7 dB	BER=10-5
higher than the desired		-	5.7 dB (5.3 dB)
carrier)	BER=10-9	5.7 dB (5.2 dB)	6.0 dB (5.6 dB)
LDPC CODEC BER		8-QAM Rate 2/3 LDPC	8-QAM Rate 3/4 LDPC
Rate 2/3 8-QAM		Guaranteed Eb/No:	Guaranteed Eb/No:
Rate 3/4 8-QAM		(typical value in	(typical value in
(With two adjacent	For:	parentheses)	parentheses)
carriers, each 7 dB	BER=10-5
higher than the desired		4.6 dB (4.2 dB)	5.2 dB (4.7 dB)
carrier)	BER=10-9	5.0 dB (4.6 dB)	5.7 dB (5.3 dB)
LDPC CODEC BER		16-QAM Rate 3/4 LDPC
Rate 3/4 16-QAM		Guaranteed Eb/No:
(With two adjacent		(typical value in
carriers, each 7 dB	For:	parentheses)
higher than the desired	BER=10-5
carrier)		6.8 dB (6.2 dB)
	BER=10-5	7.1 dB (6.8 dB)
Plesiochronous/	Selectable size of	64 to 262,144 bits, in 16-bit steps (with added limitations for G.704 frame
Doppler Buffer	boundaries)
	Size selection is displayed in bytes and milliseconds
	Supports asymmetric operation - when buffer is clocked from Tx clock, Rx and Tx rates do not need to
	be identical
Monitor Functions	Eb/No estimate, 2 to 16 dB (± 0.25 dB accuracy)
	Corrected Bit Error Rate, 1E-3 to 1E-10
	Frequency offset, ± 32 kHz range, 100 Hz resolution
	Buffer fill state, in percent
	Receive signal level (-20 to -60 dBm, accuracy is ± 2.5 dB)

15.3Data Interfaces

Primary Data	RS-422/EIA-530 DCE (Rates up to 10 Mbps)	25-pin D-sub (female)
(3 selectable modes)	(also supports X.21 DCE & DTE and 8k ESC orderwire for IDR)
	V.35 DCE (Rates up to 10 Mbps)
	Synchronous EIA-232 (Rates up to 300 kbps)
	LVDS serial (Rates up to 20 Mbps)
	HSSI - Requires optional CIC-20 Converter (Rates up to 20 Mbps)
G.703 (Tx In, Drop Out,	1.544 Mbps T1 (Balanced 100 Ω)	15-pin D-sub (female)
Insert In, Rx Out)	6.312 Mbps T2 (unbalanced 75 Ω or balanced 110 Ω)	or BNC (female)
	2.048 Mbps E1 (unbalanced 75 Ω or balanced 120 Ω)
	8.448 Mbps E2 (unbalanced 75 Ω)
	Note: All Drop and Insert modes are a FAST option.
External Reference In	2.4 kHz - 10 MHz, in 1 Hz steps (locks baseband clocks only)	BNC (female)
	TTL level (unbalanced) or sine wave @ 0dBm nominal
Overhead Data	RS-422 octet clocks for IDR ESC & IBS	25-pin D-sub (male)
	RS-422 IDR 64 kbps ESC data & clock
	RS-232 IBS ESC data & clock
	RS-422 External Clock input
	IDR BWA Inputs
	RS-232 High Rate ESC data (FAST, with Firmware V. 1.3.1 or higher)
	RS-232 ESC++ data ( with Firmware V. 2.0.1 or higher)

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