Comtech EF Data CIM-550 Installation And Operation Manual page 56

Ip-enabled satellite modem
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CiM-550 IP Enabled Satellite Modem
Front Panel Menus
SELECT\CONFIG\TX\ON-OFF
SELECT TX OUTPUT STATE:
ON
* NEW FEATURE RTI means RECEIVE/TRANSMIT INHIBIT. When selected, it
will prevent the TX carrier from being transmitted, until the demodulator is locked.
To avoid the Tx Carrier from being turned off when the demodulator loses lock for a very
short period of time, the demodulator must be unlocked continuously for a period of 10
seconds before the transmit carrier is inhibited. This time interval is fixed and the user
cannot change it.
Note: Having this feature enabled does not affect the internal IF loopback feature. But, please
be aware that if an external IF loopback is attempted (connecting an external cable from
the Tx IF output to the Rx IF input), then this will not work! (The Tx carrier cannot turn on
until the demod is locked, and the demod cannot lock, because the Tx output is off. The
net result is that the demod will not lock, and the Tx carrier will not turn on.
PLEASE USE THE RTI FEATURE WITH EXTREME CARE!.
IMPORTANT
DISPLAY
OFF
RTI
(ENTER)
SELECTIONS/DESCRIPTION
ON
OFF
RTI*
30
Rev. 2
CD/CIM550.IOM

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