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DS794Z Installation Instructions
P/N: F01U068930-06 Page 4
© 2011 Bosch Security Systems, Inc.
130 Perinton Parkway, Fairport, New York 14450
www.boschsecurity.com
8.0 Final Tests
NOTE
: Meter readings are very important in determining back ground
disturbance levels and catch margin sensitivity.
• Connect a 20,000 ohm/volt (or greater) DC VOM to the Noise Voltage
connector pins as shown. Set meter scale for about 3 VDC. Route
meter wiring through the slot in the base. (Use of the TC6000 is
recommended, but is not essential for meter use.)
• The base reference level for reading background noise or target
voltages is approximately 2.0 VDC. Installations in quiet
environments, therefore, will result in a steady meter reading
between 1.9 and 2.1 VDC.
Voltage changes greater than 0.75 VDC from the reference level are
desirable for good catch performance. If changes are less than
±0.75 VDC, the device may fail to respond at this distance if the
temperature difference between the intruder and the background is
very small.
• Turn on all heating and cooling sources that would normally be in
operation during times of protection. Stand away from the unit and
outside the coverage pattern, then monitor the background noise
for at least
three minutes
.
DS794Z readings should not deviate from the reference level more
than ±0.15 VDC. For readings outside these limits; eliminate the
cause, re-point the unit slightly, or mask off the affected zones.
9.0 Other Information
9.1 LED Indicator Operation
• If viewing the operation of the Alarm/Test LED indicator is not
desired
after
setup and walk tests are completed, place configuration
switch S1 in the Off position.
9.2 Sealing the Wire Entrance
• The foam plug that is provided with the unit is for sealing the wire
entrance from drafts and insects.
9.3 Maintenance
• At least once a year, the range and coverage should be checked
according to Sections 7.0 and 8.0 (Walk Testing and Final Tests).
• To ensure continued daily operation, the end user should be
instructed to daily walk through the far end of the coverage pattern.
This assures an alarm output prior to arming the system.
9.4 Mirror Module Information
• Should the mirror surfaces become soiled or dirty, clean using a soft
clean cloth and any commonly available mild window cleaner.
9.5 Masking
• Refer to the mirror module and pattern drawings for masking
information.
• Before attempting any masking, be sure the chosen mirror surface
is the correct one. When attempting to remove any masking, many
adhesives will either destroy the mirror’s surface or leave enough
residue behind to reduce coverage performance.
• Shaded areas of the mirror drawings do not affect the pattern and,
therefore, are not maskable.
10.0 Coverage Patterns
Mirror to Pattern
Reference
OA80
A
B
C
D
E
H
G
F
I
J
K
20
20
0 METERS
36
TOP VIEW
0
10
10
0 FEET
120
0 FEET
120
7.5
10
SIDE VIEW
D-F
G,H
I
0
0 METERS
36
A-C
C
A
B
G
H
F
D
E
I
OA120 Mirror Coverage
OA120
A
B
C
D
F
G
H
E
I
Mirror to Pattern
Reference
0
5
0 METERS
61
TOP VIEW
5
SIDE VIEW
0 FEET
200
0 FEET
200
0
10
200
61
0 METERS
OA200 Mirror Coverage
OA200
E
D
C
B
A
Mirror to Pattern
Reference
SIDE VIEW
0
FEET
80
0
10
K
I, J
F - H
0
METERS
24
A - E
OA80 Mirror Coverage
TOP VIEW
0
METERS
24
0
10
20
30
30
20
10
A
B
C
D
0
FEET
80
F
E
H
G
K
J
I
