Comtech EF Data CDM-625A User Manual

Page 485

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CDM-625A Advanced Satellite Modem

MN-CDM625A

CDM-625A ODU (Transceiver, BUC, LNB) Operation

Revision 3

10–17

Selection

Setting

Fault-Logic:

Summary or No-Summary. This controls whether or not an LNA Current-

Window fault activates the Summary Fault Relay, and further permits you to

select whether or not to switch the Online/Offline CSAT in the event of an LNA

Current-Window fault.

Press ENTER when done.

10.3.3.3.3.1.1.4 ODU: FSK-control CSAT (2CSATs CSAT #X)

Configuration Misc

Misc: Cold-Start=Disabled AFR=Enable

Xref=No Ref-Adj=087 Sync-Clk=Y ()

Use the

◄ ►

arrow keys to select a setting, and then use the

▲▼

arrow keys to change that

setting:

Selection

Setting

Cold-Start

If enabled, when the CSAT is powered on, the IF and RF outputs remain muted for 15

minutes.

AFR

(Auto Fault Recovery) This defines how a CSAT reacts to momentary fault conditions:
Off: CSAT mutes when faulted and remain muted.
On: CSAT mutes when faulted, but unmute after the fault goes away.

Xref

(External Reference) The CSAT automatically locks to an external 5 or 10 MHz

reference independent of the state of this selection. This selection determines whether

or not the Summary Fault Relay activates if the CSAT loses lock with the external

reference.

Ref-Adj

Select a value for the Internal 10MHz Reference setting from 000 to 255.
NOTE: The Internal Reference is set in the factory to be very accurate with the default

setting of 087. This setting is provided to compensate for the long-term frequency drift

of the oscillator.

Sync-Clk

(Default is NO.) Selecting YES and pressing ENTER causes the CSAT RTC (Real-

Time Clock) to be synchronized to the Modem RTC.

Press ENTER when done.

10.3.3.3.3.1.2 ODU: FSK-control CSAT (2CSATs CSAT #X) Monitor

Monitor:

Tx Rx Misc Power-Supplies

()

To view these read-only displays, use the

◄ ►

arrow keys to select Tx, Rx, Misc, or Power-

Supplies, and then press ENTER.

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