Visonic GLASSTECH Installation Instructions

GLASSTECH
Glass Break Detector
1. INTRODUCTION
The GlassTech is a revolutionary, microprocessor-controlled
glass-break detector using original sound image recognition
methods that differ from those used by other glass break
detectors. Sophisticated techniques are applied in the GlassTech
for reliable distinction between the sound pattern created when
breaking glass framed in an outer wall, and the sound patterns
created when breaking unframed glass, bottles, plates, etc.
The GlassTech's remarkable qualities were achieved by
systematic analysis of the acoustic effects in the frequency, time
and amplitude domains. Diverse room reverberations were also
studied, to discover how local acoustics affected the recognition
of true as well as false alarms.
The digital signal processing carried out by the GlassTech relates
to several time phases, from the initial impact on the glass
window to the final sound of falling fragments. Sounds undergo
statistical analysis based on 18 different sound signatures. A
2. SPECIFICATIONS
Supply Voltage: 9 - 16 VDC
Current Consumption: 20 mA approx. (standby), 25 mA approx.
(on alarm).
Maximum Detection Range: 10 m (30 ft) radius at 170° if glass
size is 30 x 60 cm (1 x 2 ft) to 3 x 3 m (10 x 10 ft);
7m (21 ft) radius at 170° if glass size is 30 x 30 cm (1 x 1 ft) to
30 x 60 cm (1 x 2 ft).
Glass Types: Plate, tempered, wired & laminated.
Glass Size: 0.3 x 0.3 m (1 x 1 ft) to 3 x 3 m (10 x 10 ft).
Glass Thickness: Plate: 2.4 to 6.4 mm (3/32 to 1/4");
tempered: 3.2 to 6.4 mm (1/8 to 1/4 in.); laminated: 3.2 to 6.4 mm
(1/8 to 1/4 in.); wired: 6.4 mm (1/4 in.).
Room Size: Not larger than 15 x 15 m (45 x 45 ft);
not smaller than 3 x 3 m (10 x 10 ft).
Min. Distance from Protected Glass: 1.2 m (4 ft).
Sensor Type: Electret Microphone.
Relay Output: Normally closed (fail-safe) contacts with 18Ω
resistor in series. Rating - 0.1A resistive / 30 VDC.
Alarm Duration: Relay contacts open for about 3 sec.
Alarm Indications: GREEN LED flickers in response to audio
sounds; lights steadily while in TEST mode.
RED LED - lights for 3 seconds on alarm, and latches ON if the
LATCH jumper is set to ON.
Power-Up Self Test Indication: Green and red LEDs flash
alternately.
Trouble Indication: Green and red LEDs light steadily.
Trouble (TRB) Output: Open collector type, 100 mA max.
3. INSTALLATION
3.1. Mounting - General Guidelines
The GlassTech is suitable for inclusion in perimeter loops that
protect occupied and unoccupied sites.
The protected pane should measure at least 30 x 30 cm (1 x 1 ft).
Optimum results will be obtained with glass panes sized 30 x 60
cm (1 x 2 ft) to 3 x 3 m (10 x 10 ft). Glass types and thickness are
given in Section 2.
The detection range of the GlassTech is exemplified in Figure 1,
where two windows are protected by a single detector. Since
room acoustics influence the effective detection range, typical
rather than maximum ranges are shown.
DE1896

Installation Instructions

sound that does not qualify as a true alarm is not automatically
identified as a false alarm unless positively recognized as such.
The GlassTech has an alarm memory that can be enabled or
disabled with a jumper. If the alarm memory is enabled, the red
alarm LED illuminates and latches upon alarm (see para. 3.7).
An important feature of the GlassTech is that upon power up, it
automatically runs self-test diagnostic routines (see para. 4.3A),
and checks the local ambient conditions. The diagnostic self-test
is repeated periodically, to verify trouble-free operation of the
electronic circuitry. Models with the -AM suffix also run an anti-
masking routine (see Para. 4.3B) at 30 minute intervals, to verify
that the microphone is neither masked nor damaged.
The GlassTech can take part in perimeter zone protection,
without worrying about occasional shattering of glassware, bottles
and food plates or other sounds produced by common appliances
and utensils.
Test Period Timeout: 5 minutes.
Tamper Switch: Normally closed. Rating - 50 mA resistive / 30
VDC. Do not wire in series with the alarm relay contacts.
RFI Immunity: >30 V/m up to 1 GHz (not verified by UL).
Mounting: Surface and flush mounting on walls and ceilings.
Compatible Single-Gang Boxes: Carlon models B108B, B118A,
B120A, A58381D for new construction prewires; B114R for
existing construction.
Optional Mounting Accessories:
BR-1: swivel bracket, adjustable 30° down and 45° left, 45° right.
BR-3: same as BR-1, with ceiling adapter.
Operating Temp.: -10°C to 50°C (14°F to 122°F).
Storage Temp.: -20°C to 60°C (-4°F to 140°F).
Dimensions (H x W x D): 68 x 51 x 23 mm (2-11/16 x 2 x 7/8 in.).
Weight: 50 gr (1-3/4 oz).
Color: White.
Patents: U.S. Patents 5,515,029 and 5,608,377.
MODELS AVAILABLE
GLASSTECH (UL-Listed): Surface-mounted model.
GLASSTECH -F: Flush-mounted model.
GLASSTECH-AM (UL-Listed): Surface mounted model with
anti- masking.
GLASSTECH-AM/F: Flush mounted with anti-masking model.
Compliance with Standards: EN 50131-1 Grade 2, Class II
Note:
For glass panes between
30 x 30 cm (1 x 1 ft) and
30 x 60 cm (1 x 2 ft), the
range is limited to 7 m. (21 ft).
Figure 1. Coverage Pattern
170°
Window Window
1 2
GlassTech
1