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General Information
Specifications
JITTER (Options UHN, A1M, A1N,
A1P, A3L, A3V and A3N)
Results: Jitter hit count, Jitter hit
seconds, Jitter hit free seconds, +ve
peak amplitude, -ve peak amplitude,
peak-peak amplitude. Additional
Results with Options A3L, A3V and
A3N. Jitter Transfer and RMS Jitter.
Jitter Autotolerance: After a swept
jitter tolerance measurement (using
Option UHK or A3K, Jitter Generation)
the results are presented graphically to
show measured jitter against the ITU-T
mask.
Jitter Transfer (option A3L, A3V,
A3N only): After a Jitter Transfer
measurement (using Option UHK or
A3K, Jitter Generation) the results are
presented in Graph form to show Jitter
Gain against the ITU-T Pass mask and
in text form to show the result at each
frequency and amplitude point.
Alarm indication: Jitter unlock and
Jitter hits
WANDER
Results: +ve peak amplitude, -ve peak
amplitude, peak-peak amplitude, peak-
peak amplitude 15 minutes, peak-peak
amplitude 24 hours, Time interval error,
Estimated frame slips, Estimated bit
slips. The Wander measurements are
available in graphical form on the
RESULTS display. Three +ve and -ve
sliding graphs, each of ±1 UI, ±16UI
and ±256 UI are provided.
Alarms: No reference and excess
wander. If Wander is >5 UI then the
status message “Excess Wander” is
displayed and is updated once/minute.
ATM Measurement (Option UKN)
Error results Physical Layer:
2.048 Mb/s: CRC4 (ITU-T Rec.
G826), REBE (ITU-T Rec. G826).
34.368 Mb/s, 139.264 Mb/s: EM BIP
(ITU-T Rec. G826), FEBE (ITU-T Rec.
G826).
155.52 Mb/s, 622.08 Mb/s: RS B1 BIP,
MS B2 BIP, MS FEBE, Path B3 BIP,
Path FEBE, Path IEC (Opt A1T only),
per ITU-T Rec. G826.
Error Results ATM Layer:
All rates: Received cells, Corrected
HEC, Non-corrected HEC, Cell loss,
Errored cells, Non Conforming cells
Misinserted cells, Mean Cell Transfer
Delay, Maximum cell delay, pk_pk 2 Pt
cell delay variation, Maximum 1 Pt cell
delay variation, Bit.
Error analysis per ITU-T G.826:
Errored Blocks, Errored seconds,
Severely errored seconds, Unavailable
seconds, Path unavailable seconds,
Block error count, Error second ratio,
Severely errored second ratio,
Background block error ratio for
CRC4, REBE, EM BIP, FEBE, RS B1
BIP, MS B2 BIP, MS FEBE, Path B3
BIP, Path IEC and Path FEBE.
Alarm indication Physical Layer:
2.048, 34.368 and 139.264 Mb/s:
Signal Loss, Pattern Loss, AIS, Frame
Loss, Multiframe Loss, Remote Alarm/
FERF, Remote Multiframe Alarm.
155.52 Mb/s, 622.08 Mb/s: Loss of
Signal, Pattern loss, Loss of pointer,
Frame Loss, MS and path FERF, MS
and path AIS, TU path AIS, TU path
FERF.
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