Config: Clocks  Freq-Ref; Config: Clocks  Int-Ref-Adjust - Comtech EF Data CDM-625 Installation And Operation Manual

CDM-625 Advanced Satellite Modem
Front Panel Operation
5.2.1.5.4 CONFIG: Clocks  Freq-Ref
Frequency Reference: Internal
(Internal(with O/P),1,2,5,10MHz)
Use the arrow keys to select one of the two internal reference modes – Internal and
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Internal (with Output) – and then press ENTER.
Internal (with Output) mode uses the internal reference as an output on the rear panel Ext Ref
In/Out BNC connector. This mode is useful if a user wishes to use a single frequency reference
for both the modem and another piece of equipment in the system. When selecting this mode,
an amber LED adjacent to the connector illuminates to alert you that the connector, normally
used as input, now has an output signal present.
5.2.1.5.5 CONFIG: Clocks  Int-Ref-Adjust
Internal Hi-Stability 10MHz Reference
Fine Adjust: +048 (+/-999)
Very fine adjustment of the Internal 10MHz Reference is possible when selecting the Internal 10
MHz Reference. The adjustment value is retained in EEPROM memory, and is therefore not lost
when the NVram memory is cleared.
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Use the arrow keys to select a digit to edit, and then use the
digit. Press ENTER when done.
Changes made to the adjust value are executed immediately upon entry, not after
pressing the ENTER key.
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Revision 13
MN-CDM625
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arrow keys to change that
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