Monitor Speaker Volume Levels; Standard Systems Only; Listen Level (Menu Sign Microphone Sensitivity) - 3M c960 Service Information

3. Adjust the HEADSET ALERT LEVEL control to provide a comfortable alert tone level in the headset
(clockwise to increase; counterclockwise to decrease).

Monitor Speaker Volume Levels

The monitor speaker volume levels are the levels for the various functions heard through the optional monitor
speaker. All adjustment controls are located on the base station circuit board. Turn the controls clockwise to
increase the volume and counterclockwise to decrease volume.
To set the monitor speaker volume levels:
1. Set the master MON VOLUME control to the midrange position.
2. With a vehicle detected at the menu sign (alert tone sounding), adjust the MON ALERT control so that the
alert signal coming through the monitor speaker is at a suitable level.
3. Press and hold the headset Talk switch and speak into the headset microphone. Adjust the MON TALK
control so that the talk audio coming through the monitor speaker is at a suitable level.
4. Press the headset Page switch and speak into the headset microphone. Adjust the MON PAGE control so
that the page audio coming through the monitor speaker is at a suitable level.
5. While you listen to audio coming from the menu sign, adjust the MON IN control so that the menu sign
audio coming through the monitor speaker is at a suitable level.
If any monitor functions are not desired by the customer, turn the related adjustment control fully
counterclockwise to silence the function.

Standard Systems Only

The following procedures apply only to standard systems.
For Standard (half–duplex) systems jumper J6 must be placed in the STD position.

Listen Level (Menu Sign Microphone Sensitivity)

The listen level is the volume of the menu sign audio heard in the headset.
To set the listen level:
1. Turn the headset/belt pack off and then on. (This sets the volume control to midrange.)
2. Have someone drive a vehicle up to the menu sign. When the vehicle is detected, you will hear the vehicle
alert tone in the headset/belt pack.
3. Press and release the headset Talk switch to cancel the alert tone and allow you to listen to the audio from the
menu sign.
4. Adjust the MENU MIC SENS level control for the desired volume (clockwise to increase volume;
counterclockwise to decrease.)
The Listen Level should now be properly adjusted. Because the headset/belt pack volume control was set at
midrange, there will now be enough range (up/down) in the headset/belt pack volume control to allow operators
to set the headset volume to a preferred level.
*Note
*Note
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