Sdh (Option Us1) - HP 37717C Calibration Manual

General Information
Specifications
minutes, code error seconds, elapsed
(including Annex D for bit errors)
M.2100, M.2101, M.2110 and M2120
analysis: Tx ES, Tx SES, Rx ES, Rx
SES, unavailability
M.2110 bringing into service test:
2 hour, 24 hour and 7 day PASS/-?-/
FAIL indication. Run a 24 hour out-of-
service test using a PRBS. After 24
hours the instrument compares ES, SES
and UAS results against the S1 and S2
thresholds derived from the path
llocation and flags either PASS/-?-/
FAIL. The 7 day test is then performed
on uncertain paths (-?-) during the 24
hour test, i.e. run contiguously for a
further 6 days.
M.2120 in-service test for
maintenance: Contiguous 15 minute
(T1) and 24 hour (T2) periods with
TR1 and TR2 threshold reports. Based
on the user entered path allocation and
maintenance factors, the T1-ES, T1-
SES, T2-ES and T2-SES thresholds are
calculated. A single threshold report
(TR1 for 15 minute, TR2 for 24 hour) is
generated when any of the relevant
thresholds are exceeded within each 15
minute or 24 hour period.
Signaling monitor: DS1: Signaling bit
state is displayed. ABCD format for
ESF andAB for SF/SLC-96. SLC-96
can display one of three states; 0,1 or
alternating. E1: Graphical display,
simultaneously showing the ABCD
signalling status of all 30 channels is
available.
Alarm scan: Alarms at the Interface
Rate and at all lower levels in the
hierarchy are scanned continuously. A
graphical picture of the hierarchy is
shown which displays the alarm state
for all streams.

SDH (Option US1)

Error results: RSOH BIP-8 (B1),
MSOH BIP-24 (B2), POH BIP-8 (B3),
Path FEBE, VC-3 Path BIP, VC-3
FEBE, VC-5 BIP-2, VC-5 FEBE, Bit
(PDH Payload), Frame (A1,A2), MS
FEBE, AU-4 path IEC, TU-2 path
FEBE, TU-2 path BIP.
Error analysis per ITU-T G.826: For
all the errors listed above. Errored
seconds, Errored seconds ratio,
Severely errored seconds, Errored
blocks, Unavailable seconds, Block
error count, Severely errored seconds
ratio, background block error ratio.
(G.821 and M.2100/M.2110/M.2120
for PDH payload)
Alarm indication: Loss of signal
(LOS), loss of frame (LOF), loss of
pointer (LOP), MS and path AIS,
pattern loss, MS FERF, Path FERF, TU
path AIS, TU path FERF, clock loss
and errors (any type).
Alarm seconds: Loss of power, Loss of
Signal, Loss of frame, Out of frame,
Loss of pointer, MS and path AIS, K1/
K2 change, MS and path FERF, H4
multiframe, TU loss of pointer, TU path
AIS, TU path FERF.
Pointer results: AU pointer value,
NDF seconds, Missing NDF seconds,
+ve Adjustment count, +ve
Adjustment seconds, -ve Adjustment
count, -ve Adjustment seconds, Implied
offset; for both AU and TU.
Overhead BER measurement: Error
count, error ratio, error free seconds
and% error free seconds.
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