5
CONTROL SETTINGS:
AUXILIARY FREQUENCY CONTROL: Minimum
AUXILIARY SELECTIVITY CONTROL: Minimum
AUXILIARY FUNCTION SWITCH:
In for Peak
POWER:
On
PRIMARY FUNCTION:
Notch
PRIMARY SELECTIVITY:
3 o'clock
PRIMARY FREQUENCY:
Maximum
ALIGNMENT PROCEDURE:
1.
Connect scope input to the speaker output or phone output of the filter.
2.
Connect signal generator to input 1 or 2 of the filter. Set the input switch on the filter
accordingly.
3.
Set signal generator for sine wave of 1V p-p and adjust generator frequency
control(s) for a null (minimum amplitude). Null should occur at about 3000 Hz.
4.
Switch Primary Function Selector to PEAK.
5.
Increase Primary SELECTIVITY control to maximum.
6.
Adjust R319 (10K) High Tracking trimmer for maximum amplitude.
7.
Set generator frequency to 500 Hz.
8.
Set primary SELECTIVITY control to 3 o'clock.
9.
Set primary filter to NOTCH and adjust primary FREQUENCY control for a null.
10.
Increase primary SELECTIVITY to maximum.
11.
Switch primary filter to PEAK and adjust R320 (500K) Low Tracking trimmer for
maximum amplitude. Reduce signal generator output level if clipping occurs.
12.
End of the alignment procedure.