Справочник Пользователя для DKS Enterprises PC Compatible Multi-Door Access Controller 1838

Speaker volume, microphone volume and feedback all interact with each other to affect the audio 
performance of the system.  Use the following steps to set these adjustments. 

 

1.  Open the 1838 controller and locate the speaker volume, microphone volume and 

feedback adjustments (see page 34). 

2.  Set the speaker volume about 1/3 from full counter-clockwise. 

3.  Set the microphone volume to 1/2. 

4.  Place a phone call from Remote Call Station.  If feedback occurs, turn the speaker 

volume counter-clockwise until it ceases.  

5.  While still on the line, ask the other party to remain silent while rubbing your finger over 

the microphone hole on the face plate.  Rotate the feedback adjustment throughout its 
range while listening to the sound coming from the speaker.  When the sound is 
minimum, this is the correct setting. 

6.  Speaker volume and microphone volume may now be adjusted to desired levels.  If both 

are set too loud, feedback may result.  For louder speaker volume, the microphone 
volume may need to be decreased.  For louder microphone volume, the speaker volume 
may need to be decreased. 

7.  Normal setting for both speaker volume and microphone volume is about 1/2. 

8.  After setting these adjustments, place some test calls.  If feedback occurs, microphone 

and/or speaker volume will need to be reduced. 

 

1.  Open the front of the 1838 controller and locate the click sensitivity adjustment. 

2.  If rotary a dial phone is not used, set the click sensitivity to full counter-clockwise to 

disable this feature.  If a rotary dial phone is used, proceed to step 3. 

3.  Place a phone call from the Remote Call Station.  After the call is answered, ask the party 

to dial 9 while you adjust the click sensitivity potentiometer (the party 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.   

4.  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. 

 

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1838-065-L-3-10