HP 37718A Installation And Verification Manual page 26

General Information
Specifications
:
M.2120
TX 15 minute threshold report,
RX 15 minute threshold report, TX 24
hour threshold report, RX 24 hour
threshold report.
ITU-T G.826: Errored seconds, severely
errored seconds, unavailable seconds,
path unavailable seconds, errored
second ratio, severely errored second
ratio.
In addition errored blocks and
background block error ratio if 2 Mb/s
line rate is selected.
If framed all above for NEAR end and
FAR end.
Alarm indication: Signal loss, pattern
loss, AIS, frame loss, multiframe loss
remote alarm, remote multiframe
alarm.
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.
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.
1-16
Autosetup: Detects line rate, signal
structure and test pattern of the received
signal.
DSn/PDH (Option 011 with Option
002)
Bit rates: 1.544, 2.048, 34.368,
44.736 Mb/s.
Interface: Electrical: To ANSI T1.102-
1993; ITU-T O.171, G.703.
Connectors:
DS1 (1.554 Mb/s): WECO bantam, 100
Ω
balanced.
E1 (2.048 Mb/s): BNC, 75
unbalanced and WECO bantam, 120
balanced.
E3 (34.368 Mb/s), DS3 (44.736 Mb/s):
Ω
BNC, 75 , unbalanced.
Output level:
DS1: DSX-1, DS1-LO.
DS3: DS3-HI, DSX-3, DS3-900'
Clock timing: Internal ±4.5 ppm.
Loop Timed - recovered from receiver.
Clock output: Selected transmitter clock
(internal or looped receiver clock) used
to generate DS1/DS3/E1/E3 test output
signal. (BNC connector, externally
Ω
terminated 50 to ground).
Test signal rates: N X 64 kb/s, 64 kb/s,
2.048 Mb/s, 8.448 Mb/s and 34.368
Mb/s. N X 56 kb/s, 56 kb/s, DS1 and
DS2.
Line coding:
DS1: B8ZS, AMI.
DS3: B3ZS.
E1: AMI, HDB3.
E3: HDB3.
Ω
,
Ω