Bell View Video Entry System
16
Lock Release Adjustment
540 Power Supply
Adjust the preset VR1 to the required time, turning clockwise to increase the time.
Shorting ‘Z’ to ‘12V -’ will operate the internal lock relay, for the preset time (and an
audible click heard).
LT88 Lock Timer PCB (supplied in a cabinet)
Adjust the preset VR1 to the required time, turning clockwise to increase the time.
Shorting the TRIG terminals together will operate the LT88 lock relay, for the preset
time (and an audible click heard).
Adjustments on 2 door systems ( 819S Switching Unit)
Refer to DIP switch settings in the table overleaf.
Lock Release Time
The time the lock release operates for when a telephone lock button, exit button, fire
switch or trades facility is used. The time can be set between 3 and 20 seconds
according to the DIP switch setting.
Call / Active Time
The time the entrance remains active (display and speech) when a call is made. The
time must be set to the same as the telephones’. Set between 30 and 120 seconds
according to the DIP switch setting.
Speech Adjustments
Make sure the Speech Unit is fitted tight against the front grill to avoid possible
feedback effects. The speech volume may be adjusted by carefully applying a small
screwdriver to the back of the Speech Unit; 'A' (speaker symbol) adjusts the speech
level at the panel and 'B' (microphone symbol) adjusts the speech level at the
telephone.
