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CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier®
Front Panel Operation
5.4.2.6
CONFIG: Tx
Tx Output State:
RxTxInhibit Common (◄ ►,ENT)
For the Transmit On./Off Control (Output State), select On, Off, RxTxInhibit, or Common
using the
When Rx-Tx Inhibit (RTI) is selected, it prevents 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 is not user-changeable.
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
IMPORTANT
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. USE THE RTI FEATURE WITH
EXTREME CARE!
CONFIG: Tx
Tx Common Output State:
Off On
For master control of all modulators – i.e., the complete transmit path – select Off or On using
the ◄ ► arrow keys, then press
5.4.2.7
CONFIG: Tx
Output Power Level Mode:
Manual AUPC (◄ ►,ENT)
To set the Transmit Power Level Mode, select either Manual or AUPC using the
keys, then press
CONFIG: Tx
Tx Output Power Level:
-03.9 dBm
Edit the Transmit Output Power Level by first using the
to be edited; the value of the digit is then changed using the
when done.
CONFIG: Tx
Selecting AUPC without Framed Mode selected results in display of the following message:
Warning! AUPC needs
Framed Mode (ENT or CLR)
On/Off
On
arrow keys, then press
ENTER
On/Off
(◄ ► ENT)
ENTER
PWR
.
ENTER
Pwr
Manual
(◄ ►, ▲ ▼,ENT)
Pwr
AUPC
Off
.
Common
.
5–17
Revision 7
MN/CDMQX.IOM
arrow
◄ ►
arrow keys to select the digit
arrow keys. Press
ENTER
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