Internal Adjustments; Sidetone Volume And Handset Receiver Volume - GAI-Tronics 701-902 SmartSeries User Manual

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701-902 S S H
MART ERIES
To adjust the VLC Level:
1. Force the station into the VLC mode by having someone execute a page from a station programmed
by the MCU to activate the VLC function.
2. During the page, turn the User Adjustment Control fully counterclockwise, and listen for two beep
tones through the page speaker indicating the VLC Adjustment mode has been activated.
3. After the two beep tones, turn the User Adjustment Control to the desired speaker level using the live
paging signal to adjust the level. The station automatically exits the VLC Adjustment mode and
reverts to normal operation 5 seconds after the last pot adjustment.

Internal Adjustments

Although they typically require no adjustments, the following volume levels can be set internally:

Sidetone Volume and Handset Receiver Volume

To make an adjustment, remove the assembly from its enclosure and make a temporary connection
between the assembly and the enclosure. Refer to Figure 2 for the reference numbers and locations of the
adjustment controls. Turn a control clockwise to increase the volume or threshold; turn it
counterclockwise to decrease the volume or threshold. Use a small flat-blade screwdriver with an
insulated shaft to make adjustments.
To access the controls, perform the following steps:
1. Loosen the four screws that secure the front panel.
2. Remove the assembly from the enclosure. If the enclosure is equipped with an optional EOL Module
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or SmartSeries station RTU, be careful to not disconnect the ribbon cable on J2 of the Speaker
Amp/Power Supply PCBA.
3. Connect the assembly to the enclosure using a 10440-002 maintenance cable between P1 on the
assembly and J1 on the enclosure.
4. Locate and adjust the control on the appropriate PCBA.
5. When you are finished with the adjustment:
a) Disconnect the 10440-002 maintenance cable.
b) Insert the assembly into the enclosure.
c) Tighten the four screws.
Handset Receiver Volume
Use the control labeled RCVR VOL (Ref. 7, on the Handset/FSK/P PCBA) to adjust to the desired level
the handset receiver volume for voice signals from a party line.
Sidetone Volume
The control labeled SIDETONE (Ref. 4, on the Handset/FSK/P PCBA) adjusts the handset/headset
sidetone.
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