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FREQUENCY Controls

The FREQUENCY controls allow control of frequency-based

parameters. Exactly which parameter is controlled by the

FREQUENCY controls depends on which panel is displayed, and what

parameters are selected.

For example, in the Main panel, the FREQUENCY controls adjust the

frequency of the generator. In the Sweep panel, the FREQUENCY

controls adjust the start and stop frequencies of the sweep.

The x10 and ÷10 keys will cause the selected frequency parameter to

increase or decrease by a factor of 10.

The INC and DEC keys will increment or decrement the frequency

parameter by a certain step size. The user can program the step size,

choosing either a specific linear step size or choosing ISO, which will

step among the ISO-standard 1/3 octave values. This setting is made

on the Setup panel. Pressing the top right Soft key in this panel will

select between ISO and a specific value. When a specific value is

selected, the frequency controls can be used to adjust the step value.

The FREQUENCY knob can be turned clockwise or counterclockwise

for fine adjustment of the frequency parameter. The knob controls the

frequency with resolution of 0.04%. One full rotation will change the

frequency by about 15%. This may be different for other parameters.

AMPLITUDE Controls

The AMPLITUDE controls allow control of amplitude-based

parameters. Exactly which parameter is controlled by the

AMPLITUDE controls depends on which panel is displayed, and what

parameters are selected.

For example, in the Main panel, the AMPLITUDE controls adjust the

amplitude of the generator. In the Sweep panel, if an amplitude-based

measurement function is selected, the AMPLITUDE controls adjust the

top and bottom amplitude values of the sweep.

The +10 dB and 10 dB keys will cause the selected AMPLITUDE

parameter to increase or decrease by a factor of 10 dB.

& For more

information on the

Setup panel, see page

3-10.

3 Operation

Front Panel Controls and Connectors Operational Overview

3-2 ATS-1 Access User's Manual

Audio Precision ATS-1 Access User Manual

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