System Sensor SpectrAlert Advance MH Series Quick Start Manual page 2

to twice as long as it would be for circuits that are not
fault tolerant.
Wiring
Figure 1. Non-Synchronized devices; any combi-
nation of models powered by a 2-wire circuit
Horn Horn/strobe
(+)
(+)
Horn Horn/strobe
(+)
(+)
(–)
(–)
(–)
(–)
Figure 2. Synchronized devices; any combina-
tion of models powered by a 2-wire circuit
Horn Horn/strobe
(+)
(+)
Horn Horn/strobe
(+)
(+)
(–)
(–)
(–)
Synchronization Module
(–)
NOTE: For further information on synchronization see
Synchronization Module
MDLA, panel, or power supply installation manual.
NOTE: For 24 volt applications, the total number of
horns on a single NAC must not exceed 85 with a
maximum loop resistance of 120 ohms. For 12 volt
applications, the total number of horns must not
exceed 85 with a maximum loop resistance of 120
ohms.
Sounder Selection
Sounder setting selection is accomplished by using
the rotary switch on the back (see Figure 3). The
sound measurements for the various settings are
shown in Table 1A. The current draw for the various
settings are shown in Table 1B. Directional character-
istics are shown in Table 1C.
Table 1A.
MHRA/MHWA SOUNDER OUTPUT (dBA) IN
ANECHOIC ROOM
Switch Sound Pattern Volume
Position
1 Temporal High
2 Temporal Low
3 Non-Temporal High
4 Non-Temporal Low
D690-07-00
Strobe Only
(+)
(+)
Strobe Only
Two Wire System
E
(+)
(+) Any Mix of Models
O
Wired for Tandem
L
Two Wire System
Operation
E
Any Mix of Models
O
(–)
(–)
Wired for Tandem
L
Operation
(–)
(–)
Strobe Only
(+)
(+)
Strobe Only
Two Wire System
E
(+)
(+) Any Mix of Models
O
Wired for Tandem
L
Two Wire System
Operation
E
Any Mix of Models
O
(–)
(–)
Wired for Tandem
L
Operation
(–)
(–)
Power Voltage
Supply
8 12 16 24
DC 87 91 94 95
FWR 90 93 94 95
DC 86 89 91 93
FWR 88 92 93 92
DC 86 88 90 92
FWR 86 89 90 92
DC 85 88 89 91
FWR 85 88 89 90
MHRZA/MHWZA SOUNDER OUTPUT (dBA) IN
ANECHOIC ROOM
Switch Sound Pattern
Position
1 Temporal
2 Temporal
3 Non-Temporal
4 Non-Temporal
Table 1B.
MHRA/MHWA CURRENT DRAW (mA RMS)
A0111-01
Switch Sound Pattern
Position
1 Temporal
2 Temporal
3 Non-Temporal
4 Non-Temporal
MHRZA/MHWZA CURRENT DRAW (mA RMS)
Switch Sound Pattern
Position
1 Temporal
2 Temporal
3 Non-Temporal
4 Non-Temporal
33
Table 1C.
95
95
DIRECTIONAL CHARACTERISTICS (90° REFERENCE)
93
90
Model
93
94
MHRA/ Horizontal
92
MHWA
Vertical
91
MHRZA/ Horizontal
MHWZA
Vertical
2
Volume Power Voltage
Supply
16 24
High DC 89 90
FWR 92 91
Low DC 87 89
FWR 90 89
High DC 89 90
FWR 87 89
Low DC 86 87
FWR 86 86
Volume Power
Supply
8 12
High DC 6 9
FWR 6 8
Low DC 5 8
FWR 5 6
High DC 7 11
FWR 6 9
Low DC 6 9
FWR 5 8
Volume Power Voltage
Supply
16 24
High DC 18 17
FWR 18 15
Low DC 16 13
FWR 16 13
High DC 21 19
FWR 20 17
Low DC 17 15
FWR 17 14
Axis -3dBA
Angle
40°, 140° 37°, 145°
37°, 140° 34°, 142°
35°, 142° 32°, 145°
40°, 140° 37°, 150°
©2006 System Sensor
33
91
91
89
89
90
90
86
89
Voltage
16 24 33
13 16 18
10 14 21
11 13 15
9 12 14
15 19 21
12 16 19
12 15 17
11 14 16
33
13
12
11
10
14
14
11
11
-6dBA
Angle
I56-3027-000