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8.2
Microwave Meter Readings
•
Connect the meter to the Microwave (μw) Noise Voltage Pins.
•
With no target motion in the pattern, read the voltage. The
background noise voltage should be steady, and should not
exceed 0.75 VDC. If it does, the cause of the disturbance should
be found and eliminated.
Remember that microwaves penetrate non-metallic
NOTE:
surfaces. Movement on the other side of walls and doors
viewed by the detector could cause unexpected background
noise readings.
9.0
Supervision Features
The supervision features function as follows:
• PIR / Microwave: The complete circuit operation of these
subsystems is checked approximately every 12 hours. If the PIR
or microwave subsystems fail, the tri-color LED will flash red
four times per cycle and the unit should be replaced.
• Default: If the microwave subsystem fails, the detector will default
to PIR technology protection. The PIR signal sensitivity will
automatically change from INT to STD.
• Trouble Clear: An intrusion alarm will reset most existing
supervision trouble conditions. There must be at least ten
seconds of no activity (no alarm) prior to the detector alarm. Self
Test failures will not be cleared; the detector must be replaced.
• Anti-masking: When enabled, the detector will indicate an Anti-
mask supervision trouble condition if a microwave reflective
material (e.g. metal, most plastics, etc.) is placed within one foot
of the detector. This feature can be used to prevent intentional
and accidental masking of the face of the detector. It is enabled
or disabled using the Motion Monitor and Anti-mask Pins.
The anti-masking feature may interpret removal and/or
NOTE:
replacement of the cover as an attempt to mask the detector
and may signal a supervision trouble condition. If this should
occur, reset the detector by removing and then re-applying
its power. The trouble condition will also be reset by the next
detector alarm after a 10 second period of no alarms from
either technology.
• Motion Monitor Supervision: This feature verifies that each
technology has a clear view of the detection area. When selected,
a supervision timer is activated which gives the detector the ability
to indicate a supervision trouble condition if the time selected by
the pins has elapsed since the last detector alarm.
If the detector does not see a detector alarm within the selected
time period, the tri-color LED will flash red two times to indicate
a supervision trouble condition and the Trouble output will
activate.
If the detector is set for 1-day motion monitor supervision, the motion
monitor timer is only active when there is no voltage applied to
terminal 8 of the detector. See Section 7.0.
10.0 Maintenance
At least once a year, the range and coverage should be verified. To
ensure continual daily operation, the end user should be instructed
to walk through the far end of the coverage pattern. This ensures an
alarm output prior to arming the system.
© 2011 Bosch Security Systems, Inc.
130 Perinton Parkway, Fairport, New York 14450
www.boschsecurity.com
11.0 Coverage Pattern
The DS950 has a standard broad coverage pattern or an optional
long-range coverage pattern. The protected coverage area is where
the microwave and PIR patterns overlap.
An optional Look Down lens is located under the detector. This
lens must be unmasked before it is operational. Use caution to
remove the black mask only. Do not attempt to remove the white
lens assembly. The Look Down lens is not recommended for
installations containing pets or small animals. The Look Down
zone is shown in black on the Coverage Pattern drawings.
Standard Broad Coverage
0
Meters
3
30
TOP VIEW
20
10
N
Q
O
0
R
P
10
20
30
Feet
10
0
SIDE VIEW
0
Meters
3
10
7.5
Q,R
0
Look-Down
0
Feet
10
Long Range Barrier Coverage
Meters
3
6
9
0
5
D
C
0
5
0
10
20
30
Feet
Meters
0
3
6
9
10
7.5
D
C
0
0
10
20
30
Look-Down
Feet
11.1 Pattern Masking
The PIR coverage pattern may be masked using masking tape or
electrical tape on the inside (grooved side) of the lens to cover the
appropriate pattern areas as shown in the following illustrations.
Always walk test for the desired coverage after masking.
A B C D E F G H I
N J Q K O L R M P
DS950 Standard Lens
Masking only eliminates the PIR portion of the coverage
NOTE:
and has no effect on the microwave pattern.
6
9
12
15
A
B
C
J
D
K
E
0
L
F
M
G
H
I
20
30
40
50
6
9
15
12
3
2.3
A-I
-5°
N-P
J-M
0
20
40
50
30
TOP VIEW
12
15
18
21
24
27
B
40
50
60
70
80
90
SIDE VIEW
12
15
18
21
24
27
B
40
50
60
70
80
90
A
B
C
D
Optional Long Range
Barrier Lens
DS950 Series Installation Instructions
P/N: F01U068629-13
9
6
3
3
6
9
30
1.5
0
A
1.5
100
30
3 Meters
2.3
A
-3°
100
2/11
Page 4
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