The "Power" Calibration Procedure - RF Technology Eclipse Series Operation And Maintenance Manual

?
This is the same mechanism that is used in 6.5 and 6.6. The user enters +, p, or P to
increase the Line 1 gain, to increase the deviation, or, -, m, or M to decrease the gain.
The user hits the Enter key when the desired deviation is set.
Now attach the audio signal generator to Line 2
Enter + or - to increase or decrease the deviation,
and <RET> when the deviation is 3kHz
?
Again the user enters +, p, or P to increase the Line 2 gain, to increase the deviation, or,
-, m, or M to decrease the gain. The user hits the Enter key when the desired deviation
is set.
The firmware goes on to open the microphone audio path (note that the microphone
PTT switch does not need to be depressed for this). Note also that the application of a
10mV test input is a factory only test. An adequate test in field testing, would be to
speak into the microphone and see that the deviation meter responded accordingly.
Testing the microphone input.
Attach an audio signal generator to the microphone input.
Set the output to be a sine wave, 10mV rms and 1kHz.
Ensure that the deviation is between 2.7 and 3.3kHz
Enter <RET> when measurement complete.
Alert Engineering if there is a failure.
Then the Direct Audio input (with the low pass filter off) is tested.
Testing the Tone input.
Attach an audio signal generator to the Tone input.
Set the output to be a sine wave, 388mV rms, and 1kHz.
Enter + or - to increase or decrease the deviation,
and <RET> when the deviation is 3kHz
?
And then user then follows the same procedure as defined for setting the Line 1 and
Line 2 gains. Note that the digital POT does not provide the same linearity as the VCAs
used in the line input audio circuits. As such it may not be possible to set the deviation
to exactly 3kHz.
6.8

The "Power" Calibration Procedure

T50> cal pwr
All Power Amplifiers are calibrated ex-factory. All the important parameters, such as
the forward and reverse power sense adjustment, and drain bias settings are not
dependent on the exciter, and thus any factory calibrated PA50 power amplifier can be
connected to, and work correctly with any T50 exciter. The frequency range of the
amplifier is defined by three jumper settings on the external PA, which the CPU can
Page 34
6 FIELD ALIGNMENT PROCEDURE
RF Technology T50