DS1520/30 Installation Instructions
Copyright © 1995-97 Detection Systems, Inc.
Page 7
7.0 Testing the Installation
7.0.1 Manual Tests
Check each installation for proper mounting and wiring.Apply power to the
detectors and connect an ohm-meter to terminals 4 and 5 of each detector
to ensure a closed alarm loop.
Perform the following tests:
• Scratch the protected surface directly around each de-
tector with a screwdriver. Depending on the strength of
the signal you generate, it may take 20 to 45 seconds to
generate an alarm. This test simulates an attack with a
drill or diamond disk.
• Strike firmly with a hammer on the protected sur-
face directly around each detector. Wait two sec-
onds between strikes. After five strikes, the
DS1520 will alarm. To protect the surface
from damage, use a small aluminum plate
between the hammer and the surface. This
test simulates an attack with a hammer and
chisel or hydraulic jack. This test is only val-
id for the DS1520.
• Give one powerful blow to the protected
surface directly around each detector.
The detector will alarm immediately. This
test simulates an attack with explosives.
• Check the background signal level of the
detector. This will aid in determining what
ambient noise may cause nuisance alarms.
Connect a DC volt-meter to terminal 2 and
the test point of the detector. Put the meter
in the 3 or 10 volt range. Make sure all pos-
sible causes for ambient noise/vibrations
are present and operating. Check the output voltage and refer to the
following chart:
DS1530
0.7 V
DS1520
1.4 V
2.5 V
0.0 V
2.0 V
O.K.
reduce range
or
remove source
alarm
Preferably, the source of ambient noise should
be removed first. If this is unsuccessful, then
the range should be reduced.
3.5 V
• Replace the covers on the detectors. Check for a closed-loop condition
on the tamper loop.
• Connect the alarm and tamper loops to the control panel of the security
system. Perform a functional test of both the alarm and tamper signals
according the the panel specifications.
8.0 The Test System
8.1 The VS A14 Test Transmitter
This remote test system allows you to test the detectors by activating the
VS A14 Self-contained Test Transmitter.
The Test Transmitter is mounted inside the detector. It is activated by sup-
plying it with 12 volts. Upon activation, it will transmit signals that will alarm
the detector.
• Mount the test transmitter inside the detector. Make sure it does not
touch the detector or mounting plate.
• The Test Transmitter has only two wires. A Red (+) lead and a Black (-)
lead.
- Refer to the following wiring example for installations with a Junction
Box.
- Refer to the examples on the previous pages for other wiring options.
1+ 2-
3
4
5
6
7
8
LED
Al arm
Tamper
Power
EOL
Test
Al arm
Loop
Power
+
-
Ground
VS A 10
VS A14
+
-
DS1520
DS1530
Tamper
Loop
8.2 The VS A15 Hand Held Test Transmitter
This Transmitter allows you to test the detector's range and functionality.
This testing accessory is required for all installations. This test must be
performed at all installations.
The VS A15 may be used with the DS1520 and DS1530 detectors or it can
be used with the VS A16 Movable Test Unit.
• Testing Procedure
- Hold the VS A15 to the protected sur-
face.
- Start the testing at the end of the pro-
tection radius.
- Press the red button on the VS A15 to
activate the alarm causing oscillations
(remember to hold the tester firmly against the protected surface).
- An alarm should occur within 45 seconds.
- If an alarm does not occur, move the VS A15 closer to the detector or
test unit.
- If an alarm does not occur at all, even while holding the VS A15 right
next to the detector or test unit, check the system wiring.
8.3 The VS A16 Movable Test Unit
The Movable Test Unit allows you to test the detector's range (range is
equal to a G ref setting) in conjunction with the VS A15 Hand Held Test
Transmitter. Make sure both units contain fully charged batteries.
The VS A16 is for use on steel or metal surfaces only.
The VS A16 mounts to the protected surface with a magnet in its base.
• Testing Procedure
- Place the VS A16 onto the
protected surface where the
real detector would go and turn it
on. The LED will come on steady.
- Activate the VS A15 Hand Held
Tester at the end of the protec-
tion radius.
- The LED on the VS A16 will turn
off within 45-60 seconds to sim-
ulate an alarm.
- If an alarm is not indicated, move
either the Test Unit or the Test
Transmitter until optimum cover-
age is verified.
VS A16
Movable Test Unit
VS A15
Hand Held Tester
1
2
3
4
5
6
7
8
+
G max
G min
1
2
3
4
5
G ref
