The CONTRA output channel is toggled ON or OFF by press-
ing the CONTRA ON/OFF softkey.
The desired PRESSURE MUX or MIC MUX input can
be selected for measurement by pressing the MUX INPUTS
softkey.
The MUX Input menu will be displayed at the
bottom of the LCD.
Pressing the PRESSURE MUX or MIC MUX softkey displays UP and DOWN
ARROW softkeys that can be used to select a MUX source.
The PRESSURE MUX sources are shown in the upper-left portion of the LCD.
This example shows the CONTRA SPKR source selected as the input for the PRES-
SURE MUX.
Grason-Stadler
Chapter 4
CONTRA ON/OFF Pressing the EXIT softkey displays the Hardware Diagnostic
Mode menu at the bottom of the screen.