Operation - MEDC DB3B Technische Bedienungsanleitung

4.0 OPERATION

The sounder is available in various AC input voltage versions and a single DC input voltage version.
For AC versions, the nominal operating voltage is stated on the unit label and the supply voltage tolerance is ±10%.
For DC versions, the absolute input voltage range is 11.0Vdc to 57.6Vdc.
If using an EOL resistor with a value between 700Ω and 2KΩ the maximum voltage should be limited to 28.8Vdc, if
using an EOL resistor with a value between 470Ω and 700Ω the maximum voltage should be limited to 26Vdc.
The unit is fitted with a volume control which is positioned on the top face of the electronics assembly PCB.
Maximum volume is obtained when this control is turned fully clockwise. When turned fully anti-clockwise the unit
will emit no sound.
Warning: Do not attempt to turn the volume control past its limits of movement as this may cause damage to the
unit.
Stages
For all versions, a 5-way DIP switch selects the stage required for each stage. The settings for the standard stages
are shown in the table below:
Tone table 1:
TONE
TONE FREQ/DESCRIPTION
No.
1 Alt Stages 800/970 Hz at 1/4 sec
2 Sweeping 800/970 Hz at 7 Hz
3 Sweeping 800/970 Hz at 1 Hz
4 Continuous at 2850 Hz
5 Sweeping 2400-2850 Hz at 7 Hz
6 Sweeping 2400-2850 Hz at 1 Hz
7
8 Sweep 1200-500 Hz at 1 Hz
9 Alt Stages 2400/2850 Hz at 2 Hz
10 Int Stage of 970 Hz at 1 Hz
11 Alt Stages 800/970 Hz at 7/8 Hz
12 Int Stage at 2850 Hz at 1Hz
13 970 Hz at 1/4 sec on 1 sec off
14 Continuous at 970 Hz
15 554 Hz for 0.1S/440 Hz for 0.4S
16 Int 660 Hz 150 mS on 150 mS off
17 Int 660 Hz 1.8 sec on 1.8 sec off
18 Int 660 Hz 6.5 sec on 13 sec off
19
20 Alt 554/440 Hz at 1 Hz
21
22 Int 2850 Hz 150 mS on 100 mS off
23 Sweep 800-970 Hz at 50 Hz
24 Sweep 2400 -2850 Hz at 50 Hz
25 3x970 Hz pulses 0.5 off, 1.5 off
26 3x2850 Hz pulses 0.5on/0.5off, 1.5 off
27 Int 3100 Hz 0.32s on/0.68s off
28
29
30
31
32
Note: If special tones were requested at the time of ordering, please see the separate tones list supplied with the unit
for details of these special tones and their respective switch settings.
06/16
Slow Whoop
Continuous 660 Hz
Int 660 Hz at 7/8 Hz
Continuous 1400 Hz
Spare / Custom tone
Spare / Custom tone
Spare / Custom tone
Spare / Custom tone
SWITCH
SETTING TONE DESCRIPTION
12345
11111
11110 Fast Sweep (LF)
11101 Medium Sweep (LF)
11100
11011 Fast Sweep
11010
11001 Slow Whoop
11000 Din Stage
10111
10110 Back-up Alarm (LF)
10101
10100 Back-up Alarm (HF)
10011
10010
10001 French Fire Sound
10000 Swedish Fire Alarm
01111 Swedish Fire Alarm
01110 Swedish Fire Alarm
01101 Swedish Fire Alarm
01100 Swedish Fire Alarm
01011 Swedish Fire Alarm
01010 Pelican Crossing
01001 Low Freq. Buzz
01000 High Freq. Buzz
00111
00110
00101
00100
00011
00010
00001
00000
Nominal SPL
(dB(A) @ 1m)
112
111
113
111
112
113
113
117
111
112
112
112
112
112
113
108
108
109
108
113
108
111
109
111
112
112
105
125
© MEDC 2016