Controlled-products-systems-group 1812-087 User Manual download pdf (Page 33)

SECTION 3 – ADJUSTMENTS

Speaker Volume

The speaker volume potentiometer is labeled SPEAKER VOL on the control board. The speaker

volume should be adjusted for adequate sound. Adjusting the speaker volume too loud will cause

feedback from the microphone.

1. Open the front of the telephone entry system and locate the speaker volume adjustment.

2. Push the "Push To Call" button to place a call to the resident. While they are talking,

adjust the speaker volume potentiometer for adequate sound. To increase the volume

rotate the potentiometer clockwise, to decrease the volume rotate the potentiometer

counter clockwise.

Feedback 1

The feedback 1 potentiometer is labeled FB1 on the control board. This adjustment minimizes

feedback from the microphone to the speaker when the system is connected to the resident

telephone.

1. Open the front of the telephone entry system and locate the feedback adjustment.

2. Push the "Push To Call" button to place a call to the resident. After they answer, ask the

resident to remain silent.

3. While rubbing your finger across the microphone hole, rotate the feedback potentiometer

clockwise, and then counter clockwise. When the noise from the speaker is minimum,

this is the correct adjustment for the feedback potentiometer.

Feedback 2

The feedback 2 potentiometer is labeled FB2 on the control board. This adjustment minimizes

feedback from the microphone to the speaker when the system has placed a call to an outside phone

line. NOTE: Feedback 2 is not used when the 1812 is programmed in the intercom mode.

1. Open the front of the telephone entry system and locate the feedback adjustment.

2. Enter one of the preprogrammed phone number directory codes (01, 02, 03) on the

system keypad to place a call to an outside number (see 2.5.3 to program an outside

number). After the party answers, ask them to remain silent.

3. While rubbing your finger across the microphone hole, rotate the feedback potentiometer

clockwise, and then counter clockwise. When the noise from the speaker is minimum,

this is the correct adjustment for the feedback potentiometer.

Master Code Switch

The master code switch is left in the off position for normal operation. Turn the master code switch on

when setting the system master code. See programming instructions to set the system master code.

If the master code switch is turned on and a new master code is not entered, the system will sound a

short tone after approximately 30 seconds. This tone will continue every 30 seconds until a new

master code is entered, or until the switch is turned off. After the switch is turned off, the display will

remain lit for approximately 30 seconds, and then will go off.

1812-065-M-3-07 Page 33

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Controlled-products-systems-group 1812-087 User Manual Page 33