HP 37718A Installation And Verification Manual page 38

General Information
Specifications
SDH alarm seconds:
Power loss, loss of signal (LOS), loss of
frame (LOF), out of frame (OOF), AU-
LOP, MS-AIS, AU-AIS, K1K2 change,
MS-RDI, HP-RDI, H4 multiframe sync
loss, TU LOP, TU AIS, LP-RDI.
PDH payload alarm indication:
Loss of signal (LOS), AIS, pattern loss,
frame loss, multiframe loss, remote
alarm, remote multiframe alarm and
errors (any type).
PDH payload alarm seconds:
Loss of frame (140 M LOF, 34M LOF,
8M LOF, 2M LOF)), out of frame (DS1
OOF, DS3 OOF), AIS, pattern loss,
RAI, H4 multiframe sync loss, remote
multiframe alarm.
SDH Alarm Scan: Automatically scans
the SDH network hierarchy for alarms
and BIP errors or alarms only with a
graphical display of the network
hierarchy's status including the
indication of unequipped channels.
Alarms: LOP, path AIS, path RDI, H4
LOM, TU LOP, TU AIS, LP-RDI.
BIP errors: AU-4 payloads -VC-4 B3
AU-3 payloads - VC-3 B3.
TU-3 payloads - VC-4 B3 and VC-3
B3.
TU payloads - VC-4/VC-3 B3 and V5
BIP-2.
User selectable BIP error threshold -
-3 -6
Off, > 0, > 10 , > 10 .
Protection switch times:
Service disruption test measures error
burst length for measurement of
protection switch times†.
Accuracy: < 50 ms.
Results: Longest burst length, shortest
burst length, last burst length.
Resolution: 1 ms.
1-28
Frequency measurement: Frequency
displayed in Hz, 1 Hz resolution. Offset
displayed in ppm and Hz.
Pointer results: AU pointer value, AU
NDF seconds, AU missing NDF
seconds, AU +ve adjustment count/
seconds, AU -ve adjustment count/
seconds, TU pointer value, TU NDF
seconds, TU missing NDF seconds, TU
+ve adjustment count/seconds,
TU -ve adjustment count/seconds,
Implied offset.
Pointer location graph: A graphical
display that shows the variation with
time of the AU-n and TU-n pointer
location. Up to four days of pointer
location activity can be monitored.
Implied VC offset: The total positive
and negative pointer movements since
the start of the measurement period are
summed and the implied mean VC
offset calculated from this total.
Overhead sequence capture:
Any one overhead channel is selected.
After a manual or programmed trigger,
the captured byte values together with
the number of consecutive frames
containing the value, are displayed.
RSOH:
6-byte channel A1A2
3-byte channel D1 to D3
Single byte channels: J0, Z0, E1, F1,
A1A2 boundary, row2 column2, row2
col3, row3 col2, row3 col3.
MSOH:
9-byte channel D4 to D12
2-byte channels K1K2 andH1H2.
Single byte channels - S1, M1, M0†,
Z1†, Z2†, E2.
† Z1 and Z2 are not present, and M0
replaces M1, in STM-0 mode.