HP 37718A Installation And Verification Manual page 30

General Information
Specifications
Alarm seconds: Power loss, AIS,
signal loss, pattern loss, 140 Mb/s
frame loss, 34 Mb/s frame loss,8
Mb/s frame loss, 2 Mb/s frame loss,
RAI, multiframe loss, remote
multiframe alarm, minor alarm,
DS3 out of frame,
DS2 out of frame, DS1 out of
frame, FEAC, DS1 excess zero's,
DS3 excess zero's, idle signal.
Trouble Scan: Up to four prioritised
non-zero error results are displayed in
extra-large characters.
Alarm Scan: The interface rate and all
lower levels in the hierarchy are
scanned for occurrences of AIS, LOF
and RAI. Any occurrence of these
alarms is displayed in graphical form.
Frequency measurement: Frequency in
Hz, resolution 1 Hz
Offset from internal clock rate (ppm),
(Hz)
Round trip delay: Measures up to 2
seconds delay between transmit and
receive.
Autosetup: Detects line rate, signal
structure and test pattern of the received
signal.
SDH Electrical: Options 001 & 002
SDH rate: 51.84 Mb/s, 155.52 Mb/s
STM-1 Output
Line code: CMI.
Output level: ±0.5V ±10%
Pulse shape: As per ITU-T G.703
mask.
1-20
Ω
Connector: BNC, 75
Return Loss:
Typically >15dB 8 MHz to 240 MHz.
STM-0 Output
Line code: B3ZS.
Pulse shape:
STM-0 450 ft: 530 mV peak nominal. As
per Draft Rec. ITU-R F.750, Appendix
1.
STM-0 HI: 1.1V peak nominal
STM-0 900 ft: 350 mV peak nominal.
Power level: -2.7 dBm to +4.7 dBm
when measured, at the STM-0 450 ft
output, using a low pass filter with a
3dB cutoff frequency of at least 200
MHz.
Ω
Connector: BNC, 75
Clock synchronization:
.
Maximum offset: The selected reference
must be < ±110 ppm.to allow lock to be
achieved.
Internal: 10 MHz ±4.5 ppm
Recovered: Recovered from the SDH
receive signal.
External MTS Clock: Timing reference
as per ITU-T G.811.
External 64 kb/s Clock: 64 kb/s
centralized clock as per ITU-T G.703
Section 1.2.2.
External 10 MHz Clock
Frequency Offset: up to ±999 ppm.
Accuracy: 0.02 ppm of selected offset.
unbalanced.
unbalanced