Measurements Of The Signal By Oscilloscope - AVS Electronics BM60HP Mode D'emploi

Measurements of the signal by oscilloscope

In the drawing below, the points where to connect
the oscilloscope are shown:
Punto A
Indicates the range
of the received
Punto C
Indicates the alarm
threshold
Punto B
E
N
Indicates the quality
of the received
G
In the graphic here below the wave shapes concerning the signal quality are shown:
1- the beam is in quiet condition and there is no passage of people or any perturbation due to
moving objects, the level is fix . Check that the quiet condition is as described.
2- the beam is disturbed or we are crossing a sensitive area (partial darkening)
3- the beam has been darkened and there is an alarm situation
.2 s
0.5 V
.2 s
0.5 V
Sensitivity
range
0 V
.2 s
2
.1 V DC
3
.1 V DC
(ss)
signal
(SO)
(SI)
signal
x
10
x
10
ON
SW2
ON
SW1
1
8
DA DB
B
C
- 48 -
LEVEL
SS
SO
SI
USB
Point B shows the quality
of the signal received
Point C shows the alarm
threshold (trimmer sens.).
In this case the sensitivity
is adjusted at the half