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Graphics and printing
Graphic display and printout
Barchart (results v 1920 time
periods) for current or stored
measurement period. Showing,
for telecom: bit error count, code
error count, frame error count,
CRC error count, REBE (remote
end block error – E-bits) error
count, M2100 ES, SES count,
alarms;
or datacom, any of: bit error
count, block error count, alarms.
Bar resolution: 1, 15, 60 minutes.
Printer and remote control
Connector: 25-pin female
RS-232-C.
Printing: Results, time, date and
instrument control settings to
external printer.
Remote control: Full duplex
RS-232 control via a terminal or a
computer.
Results and settings
storage
Internal results storage
Automatic, for up to 10 periods
with a maximum of 80 days
capacity or total capacity of
approximately 5,000 events. Data
retained when instrument
switched off.
Results stored at end of
measurement period
Telecom and datacom error
results, ITU-T G.821/M.2100 error
analysis, alarm seconds.
Instrument settings storage
All current settings and results
saved when the instrument
switched off. In addition, up to
five complete telecom and five
complete datacom setups, with
names, stored for recall.
General
Dimensions mm (inch): 190
(7.5) high, 340 (13.4) wide, 208
(8.2) deep including front panel
cover or datacom module.
Weight: HP 37722A 4.5 kg (10 lb);
HP 37732A 5.9 kg (12.5 lb).
ac Supply: 90 to 260 V, 60 VA, 48
to 66 Hz.
Temperature: 0 to +50°C
operating, −40 to +70°C storage.
Telecom measurements
All measurements are simultaneous.
Errors
At 2048 kb/s have error count, average error ratio, error free
seconds, % error free seconds of: bit (64 and 2048 kb/s), code,
frame bit, CRC4, REBE (remote end block error – E bits).
ITU-T M.2100 analysis
ES, SES and availability for maintenance monitoring of transmit
and receive directions. Receive only for out-of-service testing
(includes PRBS defects and anomalies).
ITU-T G.821 error analysis
SES, %SES, ES, %ES, UAV and %UAV (telecom only), percent
availability (datacom only), US, DM, %DM, long term mean error
ratio. Also G.821 Annex D and user-defined thresholds.
Alarms
Alarm seconds and LED display of: AIS, LOS, LOF, CAS MFM
loss, CRC4 MFM loss, remote alarm, remote MFM alarm, pattern
sync loss, octet loss, power loss.
Frequency
Range: 0 to 9 MHz.
Resolution: 1 Hz.
Slips and COFAs
Number of pattern slips in available time and changes of frame
alignment (COFA) are detected and counted.
Round trip delay
For 2
23
− 1 PRBS at 2 Mb/s.
Range: 0 to 1023 ms ± 3% (nominal).
Resolution: 1 µs.
Datacom measurements
All measurements are simultaneous.
Errors
Bit error count/ratio, block count (the block length
can be either 10
3
bits or PRBS length), block error count/ratio,
asynchronous ES, %EFS, clock slips.
ITU-T M.2100 analysis
As for telecom measurements.
ITU-T G.821 error analysis
As for telecom measurements.
Alarms
Alarm seconds and LED display of: data loss, power loss,
pattern sync loss, clock slip.
Frequency (synchronous mode only)
Range: 0 to 2.048 MHz.
Resolution: 1 Hz.
Control-circuit timing analysis
Graphic display of the status of control circuits RTS, CTS,
DTR, DSR, DCD and Mon (monitor in V.24 mode only).
Delay
Between user-defined start and stop events.
Start and stop events: Transitions of RTS, CTS, DTR, DSR,
DCD and Mon (user-connected monitor point for V.24 only).
Ranges: 100 ms, 1 s, 10 s.
Resolution: 0.1 ms up to 1 s, 1 ms above 1 s.
Specifications common to the HP 37722A and 37732A analyzers
Telecom and datacom measurements