Installation and Commissioning SWT 3000 Equipment Manual
Setting options for the SWT 30
00 <Alarms>
Figure 56: The SWT 3000 Alarms control form
Table 62: Setting options for the SWT 3000 alarm control
Selection Setting options Comments
Threshold for receive level alarm -30 to -10 dB in steps of
5 dB
When the PU3 input level drops about the
adjusted value, this is causing receive
alarm
Threshold for S/N alarm -20 to -10 dB in steps of
5 dB
In case of an worse SNR then adjusted
this is causing S/N alarm. -20 dB is the
most sensitive adjustment.
S/N Time 1 up to 30 sec in steps of
1 sec.
Measuring time for the signal to noise ratio
Force receiver alarm on S/N and/or
BE alarm
;
Receive alarm relay is activated in case of
S/N alarm or bit error alarm
Function deactivated
Blocking outputs on S/N and/or BE
alarm
;
Command output disabled in case of S/N
alarm or bit error alarm
Function deactivated
Switch NU relay in case of GAL
;
Pre-alarm relay is additional activated in
case of general alarm
Function deactivated
Alarm output EALR used for Receive alarm EALR
Unblocking UNBL
Input limitation alarm
IMPLIM
Allocation of the receive alarm to the alarm
output EALR
Allocation of the unblocking impulse to the
alarm output EALR (for unbl. impulse ref.
to table
48 page 52)
Allocation of the input limitation alarm to
the alarm output EALR (adjustment of the
input limitation see table
49 page 53)
Page - 64 Edition p3_3_2x 08/09 © SIEMENS AG 2008
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