User manual

Configuring the AM700
3-4
AM700 Audio Measurement Set User Manual
Input Range and Auto. The gain range for the analog inputs defaults to Auto enabled
to provide auto ranging on the applied signal. This avoids possible overloading of
the A/D converters and is the recommended setting for normal operation. When you
know the amplitude of the signal being measured, you can choose to make a manual
gain setting. Follow these steps when changing the input range setting:
1. Turn off the Auto enabling (check goes away) by touching the Auto soft key.
2. Make the new gain range setting by either rotating the large control knob to the
new setting and again touching the soft key or make a direct keypad entry of the
new number and press enter.
Figure 3-4: Input Configuration control panel
The gain ranges of the AM700 have fixed upper limits for each step; therefore,
when a number is entered that is not exactly one of the available range numbers, the
gain switches to the next highest valid setting above the number you entered.