Operating instructions

21
To calibrate the Output Level Meters:
1. With the unit powered down, remove the AC line cord.
2. Place the unit on a flat, stable area and remove top cover.
3. Attach the AC line cord and power up the unit.
With the AC cord attached to the unit there are dangerous AC
voltages present. Use extreme caution!
4. Connect the digital tone generator to the digital input of the 2192.
5. Set the digital generator to output a 1kHz sine wave at -18dB.
6. Adjust the left channel output meter using Output Meter Trim A* (see
Figure 4 below for
location) so that the -18dB segment on the meter just lights up.
7. Adjust the right channel output meter using Output Meter Trim B* (see
Figure 4 below) so
that the -18dB segment for the right channel just lights up.
*Component reference designation numbers may vary from those shown below.
The output meters are now calibrated.
Important: Do not adjust the Offset trimpots! These settings are optimized at the factory.
Figure 4: Output Level Meter Calibration Trimpots