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CONFIG: Clocks Clk-Ext Interface
G.703 Clock Extension:
Interface: T1
When you select TxLock as the mode, the transmit timing of the CDM-425 locks to the timing
presented of the interface type selected here.
When you select RxEnable as the mode, the CDM-425 generates a timing signal of the interface
type selected here.
The two interface types do not need to be the same for a particular link. For
example, if it is required to generate an E1 reference signal at the remote site,
but at the local end only a T1 reference signal is available, this is supported.
6.2.1.5.4
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
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 you select 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.
6.2.1.5.5
Internal Hi-Stability 10MHz Reference
Fine Adjust: +048 (+/-999)
Use this menu for very fine adjustment of the Internal 10MHz Reference. When you select the
Internal 10 MHz Reference, the adjustment value is retained in EEPROM memory, and is
therefore not lost when the NVRAM memory is cleared.
Use the ◄ ►arrow keys to select a digit, and then use the ▲▼ arrow keys to change that digit.
Press ENTER.
Changes made to the adjust value occur immediately upon entry, not after
Pressing the ENTER key.
Front Panel Operation
CONFIG: Clocks Freq-Ref
CONFIG: Clocks Int-Ref-Adjust
CDM-425 Advanced Satellite Modem
(T1,E1-B,E1-U)
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MN-CDM-425
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