GE SB250 Installation Manual page 12

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 8.)
Adjusting the intruder alarm response time
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.
Response
50 ms
time
Align. Channel
B1 B2
Delay
50 600
RECEIVER
S ms
I
G
Alarm
N
A
L
Disq.
100 ms
Rx
Potentiometer for adjusting
the intruder alarm
response time
200 ms
11
SB51
Voltmeter
400 ms
Tx
600 ms