Adjustments
Analog Audio Level Meter
Accuracy Over Frequency
If any of the Analog A Inputs failed to meet the speci
fi
cation, (or even if they
are off by more than a few tenths of a dB) the following input adjustment can
be performed.
1.
Set the analog audio generator as follows:
Control
Setting
Frequency
1 kHz
Output Level
18 dBu Audio Tone
Output Impedance
10
Ω
2.
Connect the generator balanced (BAL) analog output to the Analog A input
that requires adjustment.
3.
Press the
CONFIG
button.
4.
Navigate to
Utilities
>
Calibration
, and then press
SEL
.
5.
Push the up or down arrow key until the desired Analog Audio input channel
is highlighted, and then press
SEL
.
6.
Follow the instructions at the bottom of the screen to Save and Exit calibration
mode.
7.
Check for an indication of 18 dBu in the newly adjusted audio bar.
8.
If multiple inputs require adjustment, repeat this procedure for each input.
9.
After all adjustments are made, you should perform a complete performance
veri
fi
cation procedure.
3–6
WVR8200 and WVR8300 Waveform Rasterizers Service Manual
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