JRC JSS-2150 Instruction Manual page 55

DSC alarm specifications
The following table summarizes the alarm characteristics when communicating particularly in the
DSC mode.
Reason for the alarm
Receiving a new distress
event
Acknowledging a received
distress event
Acknowledging a sent own
distress event
Receiving a new urgency
event
Acknowledging a sent
urgency event
Receiving a new safety or
routine event
Acknowledging a sent safety
or routine event
Receiving a DSC message
pertinent to an ongoing event
Pressing the dedicated
distress button
If receiving a DSC message with the ECC error, the alarm is stopped automatically.
Note
However if the same DSC messages are received repeatedly and the every error is
corrected at last, the original alarm may be sounded.
Sound
Two tones of
2200Hz(250ms) and 1300Hz(250ms)
Two tones of
2200Hz(500ms) and 1300Hz(500ms)
Two tones of
2200Hz(500ms) and 1300Hz(500ms)
Intermittent tones of
2200Hz(250ms) and silence(250ms)
Intermittent tones of
2200Hz(500ms) and silence(500ms)
Two tones of
784Hz(1s) and 392Hz(1s)
Intermittent tones of
784Hz(1s) and silence(1s)
Intermittent tones of
494Hz(100ms), silence(100ms) and
494Hz(1s)
An intermittent tone of
2000Hz(500ms) and silence(500ms)
Operation
Increase Shutdow n
Yes Manually
No Manually
No Manually
Yes Manually
No Manually
Yes Automatically
(10s)
No Automatically
(10s)
No Automatically
(1 cycle)
No ---
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