Manual Aritech SB 250 (page 13 of 79) (English, German, Dutch, French, Italian)

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7. Operating the alignment controller (SB51)

1. On the receiver, select the maximum SB51

sensitivity by turning the SENSITIVITY knob as

far clockwise as it will go.

2. Adjust the direction of the transmitter beam

cells until you obtain a continuous tone from

the buzzer and the maximum flashing

frequency on the LEDs. (If there is no signal,

the frequency of the LEDs and the buzzer is 1

Hz.)

3. To further refine the adjustment, reduce the

sensitivity of the SB51 on the receiver by

turning the SENSITIVITY knob anti-clockwise

to mid-range.

4. Continue as in step 2 until you obtain the

maximum signal.

Rx Tx

SB51

5. Check the received signal using a voltmeter

connected to the measurement terminals on

the alignment controller SB51 and ensure that

the alignment complies with the table in the

“Optimising reception” section (page 10.)

Rx Tx

SB51

Voltmeter

Adjusting the intruder alarm response time

Attention: Adjust the response time of the intruder alarm by turning the

response time potentiometer. In this way you can adapt the sensitivity of the

detector to its environment. A long response time reduces sensitivity.

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Aritech SB 250 Manual

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