the REMOTE position will enable the re-
mote control circuits and should be in RE-
MOTE position for normal operation. In
addition to enabling the remote inputs, the
transmitter will mute the RF Oscillator
when in an OFF condition.
Note: The PA Voltmeter deflects upward
when shut off in the Remote mode. This is
a normal function of the RF drive being
removed when PA voltage is present.
2.7.3.
Application of Audio
Apply audio to the transmitter, and ob-
serve the resulting modulation level on the
monitor. The audio input sensitivity is fac-
tory set for +10dBm, but is continuously
adjustable down to -10dbm. If you desire to
increase the sensitivity, you may adjust R21
on the PDM Generator.
Audio polarity is important, especially if
you operate in stereo. Observe the results on
your monitor, and change the audio polarity
if the need is indicated.
2.7.4.
Remote Meter Calibration
The remote sample outputs of the trans-
mitter are designed to be compatible with
most modern day remote control units, with
less than 5 volts dc of output into a 10K ohm
impedance. There are no internal adjust-
ments for these voltages.
Set the remote control unit’s calibration
adjustments to match the transmitter’s me-
ter readings.
Note: The remote current reading is Supply
Current, which is not the same as PA Current.
The remote Supply current reading should be
calibrated against the Supply Current reading
on the transmitter multimeter.
Supply Current actually reads lower than
PA Current in normal operation due to the
manner in which the PDM system operates.
This concludes the initial turn on procedure.
Refer to sections A through K for individ-
ual board controls and indicators.
Rev. AC: 2/29/00
888-2314-001
2-7
WARNING: Disconnect primary power prior to servicing.
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