MEDC DB3 Manual Tecnico página 3

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(b) Connecting as a 3 wire common +ve system and switching between the 2 -ve lines.
NOTE: – with T1 (+ve), T2 (-ve) Tone 1 is produced (as set by DIL switch 'TONE 1').
– with T1 (+ve), T3 (-ve) or T1(-ve), T2(+ve) Tone 2 is produced (as set by DIL switch 'TONE 2').
The unit is fitted with volume control which is fitted adjacent to the DIP switches for dc units and is mounted on
the transformer for ac. Maximum volume is obtained when this control is turned fully clockwise.
2.1 Tones
For all versions, a 5-way DIL switch selects the tone required, the settings shown in table 1 below.
TABLE 1
TONE FREQ/DESCRIPTION
1
Alt Tones 800/970 Hz at 1/4 sec
2
Sweeping 800/970 Hz at 7Hz
3
Sweeping 800/1000 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
Slow Whoop
8
Sweep 1200-500 Hz at 1 Hz
9
Alt. Tones 2400/2850 Hz at 2 Hz
10
Int. Tone of 970 Hz at 1 Hz
11
Alt. Tones 800/970 Hz at 7/8 Hz
12
Int. Tone at 2850 Hz at 1Hz
13
970Hz at 1/4 sec on 1 sec off
14
Continuous at 970 Hz
15
554Hz for 100ms / 440 Hz for 400ms
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
Continuous 660 Hz
20
Alt 554/440 Hz at 1 Hz
21
Int. 660 Hz at 7/8 Hz
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
3 970Hz pulses 0.5on/0.5off, 1.5 off
26
3 2850Hz pulses 0.5on/0.5off, 1.5 off
27
Int. 3100 Hz 0.32s on / 0.68s off
28
Spare/Customer Tone
29
Spare/Customer Tone
30
Spare/Customer Tone
31
Spare/Customer Tone
32
Spare/Customer Tone
© MEDC 2010
See Table 1
SWITCH SETTING
12345
11111
11110
11101
11100
11011
11010
11001
11000
10111
10110
10101
10100
10011
10010
10001
10000
01111
01110
01101
01100
01011
01010
01001
01000
00111
00110
00101
00100
00011
00010
00001
00000
TONE
DESCRIPTION
Fast Sweep(LF)
Med Sweep(LF)
Fast Sweep
Slow Whoop
Din Tone
Back-Up Alarm(LF)
Back Up Alarm(HF)
French Fire Sound
Swedish Fire Alarm
Swedish Fire Alarm
Swedish Fire Alarm
Swedish Fire Alarm
Swedish Fire Alarm
Swedish Fire Alarm
Pelican Crossing
Low Freq. Buzz
High Freq. Buzz
Nom O/P
(dB(A) @ 1M)
114
114
114
109
114
114
115
115
111
114
114
109
114
114
101
106
106
104
106
100
106
109
113
112
113
109
110
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