Annex
NRP2
382User Manual 1173.9140.02 ─ 07
Trace measurement:
MEAS:XTIMe? (<scope_size>),
<capture_time>
Measurement in the ContAv mode with data buffering:
MEAS:ARRay?
<tslot_width>,<no_slots>,<start_exclude>,<stop_exclude>
In the Timeslot mode, the trigger source is set to EXTernal. In the "BurstAv" mode, it
is not modified but ignored. Triggering in response to the signal is performed as if
TRIGger:SOURce INTernal were set.
These commands have the specified parameters, whose meanings are explained in
the operating manual. In addition, parameters DEF, <resolution>, <source_list>
can be optionally specified as for the MEAS? command.
Example:
MEAS:TSLot?
577
us, 8, 18 us, 18 us
A timeslot measurement of a GSM signal is performed (8 timeslots with a length of
577 µs each). 18 µs at the beginning and the end of the timeslots are ignored. The
measurement is carried out with sensor 1 (default). The instrument is triggered by an
external signal, which must be routed to the R&S NRP2 rear panel via the trigger input.
The measurement result is a list of 8 measured values separated by a comma for the
timeslots.
Example:
MEAS:BURSt? 5 us, 10 us, 0 us, DEF, 3, (@2)
Sensor 2 measures in the BurstAv mode. Triggering (in response to a rising edge) is
internal. At the beginning of the power pulse, 10 µs are ignored to avoid overshoots in
the signal, which could distort the measurement result. If the power falls below the trig-
ger level but does not exceed 5 µs (dropout time) the measurement will not be stop-
ped. The measurement result is noise-free within the first 3 places and it is measured
with sensor 2 ((@2)).
Example:
MEAS:XTIMe? (256), 577 us
Within the next 577 µs, 256 measured values are recorded and displayed with respect
to time in te same manner as with an oscilloscope in order to display the power charac-
teristics. There is no triggering (TRIG:SOUR IMM); the measurements are started after
the command is received from the R&S NRP2. After a partial measurement has been
completed, the next one is started. If the trigger source setting is to be changed,
MEAS:XTIMe? must be replaced by the CONF:XTIMe and READ:XTIMe? commands,
between which user-defined settings can be performed. Dividing MEAS? into the CONF
and READ? commands is described further down. The measurement result is a list of
256 measured values separated by a comma.
Programming Measurements
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