
ETR Thresholds - Interface checks:
Pre FEC bit
error rate
check:
If enabled an alarm will be raised provided that the pre FEC BER
measured is above the demodulator threshold value associated
with the stream.
Only relevant for QAM and COFDM demodulators.
Post FEC bit
error rate
check:
If enabled an alarm will be raised provided that the post FEC BER
measured is above the demodulator threshold value associated
with the stream.
Only relevant for QAM, COFDM and SAT demodulators.
Modulation
error ratio
check:
If enabled an alarm will be raised provided that the MER measured
is above the demodulator threshold value associated with the
stream.
Only relevant for QAM demodulators.
Signal to
noise ratio
check:
If enabled an alarm will be raised provided that the SNR measured
is below the demodulator threshold value associated with the
stream.
Only relevant for demodulators.
Signal
strength
check:
If enabled an alarm will be raised provided that the signal level
measured is below the minimum signal strength threshold value or
above the maximum signal strength threshold value associated
with the stream.
Only relevant for demodulators.
SFN drift
check:
Enable or disable alarming of SFN drift errors.
Only relevant when a COFDM demodulator is present in the
chassis.
SFN drift
check -
Monitor SFN
Drift, max
drift (100ns):
Check the Monitor SFN Drift box to enable SFN drift monitoring,
and set the drift alarm threshold (in steps of 100ns, i.e. 100
indicates a threshold of 100*100ns).
Default: disabled and 100 = 10000ns
Only relevant when a COFDM demodulator is present in the
chassis.
SFN drift
check - Drift
zero adjust
(100ns):
SFN drift zero adjustment to compensate for delays in transmitter
and receiver equipment. When an optimal system is configured
the
Drift zero adjust
figure should be set to yield an
SFN drift
figure of zero in the
COFDM - Status
view.
Only relevant when a COFDM demodulator is present in the
chassis.
Center
frequency
check:
Enable or disable alarming of center frequency inaccuracy with
reference to QAM threshold settings.
PROBE USERS' MANUAL VERSION 5.0
2014 © BRIDGE Technologies Co AS - Bentsebrugata 20 - N-0476 Oslo, Norway - tel: +47 22 38 51 00
-
www.bridgetech.tv
153