-
2
-
121101
Figure 12 shows the pattern for the maximum range in the
optimum position (see Figure 10). Masking the top section
of the lens reduces the range to 20m.
Figure 13 shows the pattern for the minimum range (10m).
In this case masking the top section of the lens reduces the
range to 6 meters.
Figures 14 and 15 illustrates alignment recommendations
for when the detector is mounted close to a wall.
The alignment shown in Figure 14 is not recommended. If
the detector module is orientated at an angle of 90° to the
perimeter, the mounting wall may cut off short and medium
range beams. The long range beam will still detect an
intruder, however the wall can cause false alarms when
heated by sunlight.
Figure 15 shows the recommended alignment. The detector
module is orientated at a 55° angle to the perimeter. As a
result, short and medium range beams are parallel to the
perimeter, but the detection range along the perimeter is
reduced to 25 metres.
The user can individually programme a number of
configurable settings, as illustrated in the programming
chart.
Programming
4. Press the programme button twice to change the
setting to ON.
5. The indicator blinks twice and the changes are
stored in the D-Tect 1's non volatile memory.
Walk Test
In walk test mode, the detection LED option is set to ON,
and the pulse count option is set to 1. The detection LED
lights each time the D-Tect 1 detects your presence.
To enter the walk test mode, press the programming button
once. The detection LED lights and pulse count 1 is
automatically selected. The unit can then be aligned.
The test mode ends automatically five minutes after last
detection. Alternatively, press the program button three
times, or remove and then reapply power to cancel the walk
test mode.
Note: When you conduct a walk test, make sure that the
front cover is in place. Do not conduct walk tests with
the cover removed.
The range of the detector increases without the protective
front cover. Therefore the front cover must be fitted to
establish the correct beam pattern. Use programming chart
to adjust the range as necessary. Pan and tilt the lens
module over the field of view to obtain the correct coverage
area.
SETTING
1
2
3
O
P
T
I
O
N
S
1
Range (m)
10
20
30
2
Pulse Count
1
2
3
LED
Off
On
A
U
X
7
Press 7 times to flash out your selected settings
8
Press 8 times to reset to GJD factory settings
Shaded settings are factory defaults
To change any of the D-Tect 1 settings:
1. Press the programme button, as shown in figure
16, for the number of the Option to be changed, i.e.
once for range, twice for pulse count and three
times for LED.
2. Wait until the blue LED indicator goes off (typically
four seconds).
3. The indicator will then flash out the existing
settings.
4. To change the settings for that option, press the
programme button the number of times for the
required new setting.
8. The indicator blinks twice and the changes are
stored in the D-Tect 1's non volatile memory.
Example: To change the LED setting from OFF to ON:
1. Press the programme button twice.
2. Wait until the blue LED indicator goes off (typically
four seconds).
3. The indicator will then flash once, indicating the
current LED setting is OFF.
Programming Options Definitions
Pulse Count
This is the number of times the unit has to detect on both of
its sensors before signalling an output.
LED
LED Off – LED disabled.
LED On – LED signals a detection.
Programming Chart
GJD is able to supply the following accessories to aid
installation:
GJD304
Conduit cable entry adaptor ring
GJD305
Pole mount clamp
GJD380
D-Tect Walk Tester
Accessories
Specifications
Detection Area
Programmable between 10 & 30
metres.
Coverage
10-70 degrees detection angle, 30m x
30m coverage max.
Adjustment
180 degree pan + 90 degree tilt.
Fresnel Lens
28 zones for each Pyro pair, which can
be masked with curtain sliders and
special masking tape (supplied).
Customised Optics
Double silicon shielded quad element
eliminates 50,000 Lux of white light.
Outputs
Silent solid state magnetically immune.
No. 1
N / OPEN
Volt free relay signal contact 24VAC/DC
@ 50mA with an integral 25Ω
Alarm time 5 seconds