4
DATEQ Silence detector user manual
Settings
EN
Settings
To adjust the internal jumper-settings the SD-1 has to be opened. First loosen the bolds at the front
and at the back of the SD-1 one turn. Next unscrew three the screws of the top-lid completely. Now
the lid can be folded of the SD-1.
With the internal dip-switches some extra settings can be made. In the drawing below the dip-
switches are shown.
Pilot alarm
When this function is enabled the backup-device will be activated when the pilot-tone (19kHz) is not
active or when the audio at the main-input stops. When this switch is disabled (default) the backup
device will only start when no audio is present at the main input. The pilot-tone detection level can be
adjusted with trimmer RT1.
Inverted outputs
By activating this switch the alarm outputs will be inverted.
Pulsed outputs
When this switch is active the start and stop output will generate a 100mSec pulse to start and stop
the backup-device. This function can be combined with the ‘inverted outputs’ function.
Timing mode
With this switch the detection-mode can be adjusted.
When the switch is in the ON-position the start and stop timers will reset as soon as an audio-signal
is detected.
When the switch is in the OFF-position the timers will count up and down according to the presence
of the detected signal.
•
The advantage of disabling this function: The backup device will not stop when there are only
short sporadic signals or noises on the line.
•
The advantage of enabling this function: When in an interview a natural silence occurs the timers
will immediately reset when a person starts to speak.
RP1
RP2
RP3
RP4
XT
1
R27
O
N
4
3
2
1
U12
D11
D10
D
3
D2
D1
P6
U9
C35
C34
C33
C37
C36
C24
U
6
R2
6
R45
R25
R24
R2
3
R22
Vcc
Switch number
Function
1
Pilot alarm
2
Inverted outputs
3
Pulsed outputs
4
Timing mode
