Controlled Products Systems Group 1802-082 - Manual (Page 21)

2.4 Adjustments
2.4.1 Speaker Volume
1. Open the front of the telephone entry system and locate the speaker volume adjustment.
2. Place a phone call from the telephone entry system to a 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. See Feedback adjustment (2.4.3 step 4).
2.4.2 Microphone Volume
1. Open the front of the telephone entry system and locate the microphone volume
adjustment (Rev H boards and higher only).
2. Place a phone call from the telephone entry system to a resident. Talk to the resident in
a normal voice while adjusting the microphone volume potentiometer. Ask the resident to
let you know when the sound in their telephone is adequate. To increase the volume
rotate the potentiometer clockwise, to decrease the volume rotate the potentiometer
counter clockwise. See Feedback adjustment (2.4.3 step 4).
2.4.3 Feedback
1. Place a phone call from the telephone entry system to a resident. After they answer, ask
the resident to remain silent.
2. Open the front of the telephone entry system. Remove the jumper from the TONE OFF
terminals and place it on the TONE ON terminals. A tone will be heard in the speaker.
3. Rotate the feedback potentiometer clockwise, and then counter clockwise. When the
tone from the speaker is minimum, this is the correct adjustment.
4. Move the jumper back to the TONE OFF terminals when complete.
5. High microphone and speaker volume levels may cause feedback. It may be necessary
to reduce the speaker volume if the microphone volume is set too high. Likewise, it may
be necessary to reduce the microphone volume if the speaker volume is set too high.
2.4.4 Click Sensitivity
1. Open the front of the telephone entry system and locate the click sensitivity adjustment.
2. Place a phone call from the telephone entry system to a resident with a rotary dial type
phone. After they answer, ask the resident to dial 9 while you adjust the click sensitivity
potentiometer (the resident may have to dial 9 several times for you to obtain the correct
adjustment). When the door or gate opens, this is the correct adjustment for the click
sensitivity.
3. NOTE: Adjusting the click sensitivity too high (potentiometer fully clockwise) could cause
the system to respond to loud noises while it is in use. If this happens, rotate the click
sensitivity potentiometer counter clockwise 1/8 turn and re-test the system. You may
have to perform this step several times to find the correct adjustment.
2.4.5 Display Contrast
1. Open the front of the telephone entry system and locate the contrast adjustment.
2. Turn the master code switch on. The display will read MST CODE. While the display is
lighted, turn the contrast potentiometer clockwise and then counter clockwise until the
display is satisfactory.
3. Turn the master code switch off.
4. NOTE: Approximately 30 seconds after the master code switch is turned on, the system
will signal a long tone. This is normal and can be ignored. After the master code switch is
turned off, the display will read MST CODE for approximately 30 seconds.
1802-065-C-1-08 Page 21