- 5 -
SPECIFICATIONS
Range:
25' (7.6 m) maximum
No minimum range
Operating Temperature:
32
o
to 120
o
F (0
o
to 49
o
C)
Storage: -4
o
to 122
o
F
(-20
o
to 50
o
C)
Alarm Duration:
5 seconds (unaffected by
alarm LED latching)
Alarm Relay:
Form C
125 mA maximum
25 VDC maximum
Tamper Switch:
Combination cover and
wall tamper
25 mA maximum
24 VDC maximum
Power Requirements:
8 - 14 VDC; 25 mA typical at
12 VDC, 35 mA max
AC Ripple: 4 Volts peak to peak
at Nominal 12 VDC
RF Immunity:
30 V/m, 10 MHz - 1000 MHz
ESD Immunity:
10 kV;
Discharges of either polarity to
exposed surfaces
Thickness
Type
Minimum
Maximum
Plate
3/32" (2.4 mm)
1/4" (6.4 mm)
Tempered
1/8" (3.2 mm)
1/4" (6.4 mm)
Laminated
1
1/8" (3.2 mm)
9/16" (14.3 mm)
Wired
1/4" (6.4 mm)
1/4" (6.4 mm)
Coated
2
1/8" (3.2 mm)
1/4" (6.4 mm)
Sealed Insulating
1
1/8" (3.2 mm)
1/4" (6.4 mm)
1
Laminated and sealed insulating glass types are protected only if both plates of the unit are
broken.
Protected Glass:
Minimum size for all types is 11"
(28 cm) square; Glass must be
framed in the wall of the room or
mounted in a barrier of 36" (0.9 m)
minimum width.
Dimensions:
4.25" OD x 0.88" THK
(108 mm x 22.4 mm)
Weight:
4.5 oz., (128 g)
Packaged Product: 7.5 oz, (213 g)
Command Input/
Remote LED Enable:
Active low (0 - 1.5 V)
High impedance for inputs less
than 5.6 V. Draws less than 1 mA
for inputs up to 16 V.
2
For glass coated on the inner surface with 3M scotchshield type RE35NEARL or Hard Glass
Security Film, reduce maximum range to 15 feet (4.6 m).
Patents:
U.S. and International Patents
Applied For
Approvals/Listings:
Accessories:
FG-701 Glass-Break Simulator
FG-SP2 Spacer Plate
Trouble Output:
Open collector, active high; 1K
series resistor; 20 mA/16 V max
Note: The FG-1025Z Glass-Break Detector is designed for primary
perimeter security. For a complete security system, additional
interior protection devices are recommended.
FCC Notice: This equipment has been tested and found to comply with
the limits for a Class B digital device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harm-
ful interference in a residential installation. This equipment generates, uses
and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures: 1) Reorient or
relocate the receiving antenna, 2) Increase the separation between the
equipment and receiver, 3) Connect the equipment into an outlet on a cir-
cuit different from that to which the receiver is connected. The installer can
also consult an experienced radio/television technician for additional sug-
gestions, if necessary.
In addition, a booklet on interference, prepared by the Federal Communi-
cations Commission, is also available for reference. Order "Interference
Handbook" from the U.S. Government Printing Office, Washington D.C.
20402, stock no. 0004-000-00450-7.
SELF-TESTS (Continued)
If any self-test fails, the unit will signal trouble by flashing the LED's
alternately about once per second. Protection will continue if pos-
sible. If the trouble condition clears, the LED's will return to the
normal state. Always return the unit for repair if there is any indica-
tion of trouble, even if the trouble is temporary.
TECHNICAL INFORMATION
The FG-1025Z is a directional glass-break detector. It has
precisely-defined protected and excluded zones. There is no
reduction in sensitivity at the edges of the protected zone, and
the device completely rejects sounds in the excluded zone, no
matter how loud they are, or how similar to glass-break they are.
This performance is achieved through the use of two micro-
phones and time-of-arrival (TOA) processing. When a sound is
generated in the room the microphone nearest the sound will
receive it first. The microcontroller in the unit monitors all sound
events received by the microphones and processes only those
received first at the "front" microphone, which is pointed toward
the protected zone. Sounds arriving at the "back" microphone
first are simply ignored.
Because of the symmetry of the unit, the space surrounding the
front and back microphones is divided evenly between protected
and excluded zones. A region 20 degrees wide on each side of
the unit is the keep-out zone. In this region sound may or may
not be processed. Glass to be protected should never be within
the keep-out zone. However, false alarm immunity is at least as
good in the keepout zones as it is in the protected zone.
