User guide

AMP2A-10S User Guide

Technical Functional Diagram

2. Locate P2 on the 919030 bar graph driver PCB(s) you wish to

adjust. The P2 trim pot faces upward from the PCB edge. Of the

two trim pots visible (P1 and P2) it is the farthest from the front

panel as mounted to the chassis.

3. Connect an analog audio signal of an amplitude of approximately

1 kHz of the amplitude desired to give a “Peak” indication on the

bar graph (top segment) to the input of the bar graph you wish to

adjust.

4. Turning the P2 pot clockwise increases the displayed level

(sensitivity) of the associated bar graph meter. For example, to set

the Peak LED Segment level at +10.5 dBu (rather than the factory

default setting of +9.5 dBu), feed an analog audio signal of +10.5

dBu amplitude (as in Step 3) into the input on the rear panel, then

turn the P2 pot counter-clockwise as you visually monitor the

associated bar graph meter on the front panel until the desired

display setting (top segment) is achieved for the increased input

level. To peak the meters for a lower input level, you would turn

the pots clockwise to increase the displayed level for any

decreased input level.

Technical Functional Diagram

Figure 1–5 illustrates the overall functionality of the AMP2A-10S.