HP 37717C, Calibration Manual, Page: 59 / 399

1-38
General Information
Specifications
(Not available if SDH option is US1):
A single or multibyte overhead channel
can be monitored. After a manual or
programmed trigger, the captured byte
values are displayed together with the
number of consecutive frames
containing the value.
RSOH: A1A2, E1, F1, C1, (for STM-1
under test), D1-D3
MSOH: H1H2, K1K2, D4-D12, S1,
E2, Z1 & Z2 (for STM-1 under test),
M1 (when STM-1 number3 selected for
test)
High order POH: J1, C2, G1, F2, H4,
Z3, Z4, Z5 (for STM-1 under test)
STM-4 overhead BER measurement
(Not available if SDH option is US1):
Any RSOH, MSOH or POH channel
listed under STM-4 overhead sequence
capture can be selected and a BER
measurement performed using the 2
9
-1
PRBS provided by the transmit
overhead BER test function.
Error count, error ratio, error free
seconds, percentage error free seconds
and pattern loss seconds are calculated.
STM-0/STM-1/STM-4
OPTICAL INTERFACE (1310
nm) with STM-4c Overhead
Option 131
Rate: 51.84 Mb/s, 155.52 Mb/s
Line code: NRZ
Connectors: Adaptors to which a range
of interfaces can be attached.
Transmit:
Wavelength: 1280 - 1330 nm
Spectral width: 2.5 nm rms nominal
Extinction ratio: <8.2dB nominal
Fibre power output: -10dBm nominal
Safety classification: Class 3A, FDA
21 CFR Ch.1 1040.10 and EN 60825
Clock timing: Internal, recovered from
received STM-0, STM-1 or STM-4
optical, electrical or binary signal,
external MTS - data or clock format (as
ITU-T G.811)
Frequency offset generation: Up to
±
999 ppm in 0.1 ppm steps
VC-4-4C error add: B3 BIP, HP REI,
HP IEC - 10
-4
to 10
-9
, Bit - 10
-3
to 10
-9
.
VC-4-4C alarm generation: AU-AIS,
HP-RDI, AU-LOP, Path Unequipped
STM-4 error add: Frame - single and
N in 4 frame words, B1 BIP - 10
-4
to
10
-9
, B2 BIP and RS REI - 10
-3
to 10
-9,
STM-4 alarm generation: Loss of
signal, loss of frame, out of frame,
multiplexer section AIS, multiplexer
section RDI.
STM-4 thru mode:
Transparent mode: The STM-4
signal is passed through the HP 37717B
without being altered. The BIP’s are not
recalculated.
Overhead overwrite STM-4 mode:
The test features associated with the
section overhead can be enabled in
order to control one single or multi byte
overhead channel. The B1 and B2 bytes
are recalculated.
Overhead overwrite STM-4-4C
mode: The test features associated with
the section overhead and path overhead
can be enabled in order to control one
single or multi byte overhead channel.
The B1, B2 and B3 bytes are
recalculated.
AU-4 overwrite mode: Overwrite the
complete AU-4 with the internally
generated payload. This enables the