CDM-570A/570AL Satellite Modem with Optional Packet Processor
Revision 5
Front Panel Operation 6–35 MN-CDM570A
You may define an alarm point value where, if the E
b
/N
0
falls below this value, the modem
generates a receive traffic fault.
The valid range of values is from 0.1 to 16.0 dB.
To edit the E
b
/N
0
Alarm Point, use the ◄ ► arrow keys to select a digit, and then use the
▲▼arrow keys to change that digit. Press ENTER.
When either ACM mode is active, the CONFIG:Rx menu changes the E
b
/N
0
option to SNR.
6.3.2.4.12 (CONFIG: Rx) SNR (IP-ACM (VersaFEC ACM) or
V2-ACM (VersaFEC-2 ACM) Modes Only)
SNR Alarm Point:
02.0 dB (◄ ►,▲ ▼,ENT)
When either ACM mode is active, the CONFIG:Rx menu changes the E
b
N
0
option to SNR.
Edit the SNR Alarm Point by using the ◄ ► arrow keys to select a digit, and then use the ▲▼
arrow keys to change that digit. The allowable range is from 00.1 to 16.0 dB. Press ENTER.
6.3.2.4.13 (Config: Rx) α (Rx Alpha Filter Rolloff Factor)
Rxα: .35 .12
(◄ ►,ENT)
Use the
◄ ► arrow keys to select an Rx Alpha Filter Rolloff Factor (Rxα) of .35 or .12. Press
ENTER.
• .35 is the default Rx Alpha Filter Rolloff Factor (Rxα).
• Set the Rxα to .35 when the Txα of the received signal is 0.25 or 0.35.
• Set the Rxα to .12 when the Txα of the received signal is .05, .10, .15, or .20.
• When operating in CDM-570 Compatible Mode, the Rxα is fixed to the
default value of .35. Selection of this feature and its options becomes
disabled and unavailable. See Section 6.2 for further information.
6.3.2.5 CONFIG: CEx (G.703 Clock Extension)
G703 Clock Extend: None
TxLock RxEnable (◄ ►,ENT)
Use the
◄ ► arrow keys to select None, TxLock, or RxEnable. Press ENTER. When you select
TxLock or RxEnable, the modem displays the following submenu:
Clk Extend Interface: T1
E1Bal E1Unbal (◄ ►,ENTER)
Use the
◄ ► arrow keys to select T1, E1Bal, or E1Unbal as the G.703 Clock Extension interface.
Press ENTER.
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