Rohde & Schwarz CMU-K20, Руководство по эксплуатации

Страница: 440 / 646

Signalling: POWer:ABURst CMU-K20/21/22/23/24
1115.6088.12 6.136 E-12
POWer:ABURst
The subsystem POWer:ABURst measures the MS output carrier power versus time for access bursts.
The subsystem corresponds to the measurement menu Power, application P/t Access..., and the
associated popup menu Power Configuration. It contains all commands for measurement control and
for the output of measurement results. The limit lines, however, are taken from the
POWer[:NBURst]
subsystem and adapted to the shortened access burst:
•
The central part (area no. 5 of the upper limit line and area no. 3 of the lower limit line) is 60 bits
shorter.
•
The position of areas around the falling edge is adapted to the shortened central part: Areas no. 6
to 8 of the upper limit line and area no. 3 of the lower limit line are shifted by –60 bit.
Note that access burst measurements are always made on a single burst, so no
:CONTrol
subsystem
and no display modes
[:CURRent], :AVERage, MINimum, :MAXimum
are needed.
Note:
To perform any kind of measurement and obtain a meaningful result, an appropriate test setup
is required (see application examples in chapter 2 of this manual). Consequently, for the
measurements reported in the following sections, the
Call Established (CEST) signalling state
must be reached before any of the commands retrieving test results
(READ...?,
FETCh...?
,
SAMPle...?
, or
CALCulate...LIMit?)
can be used. Test configurations,
however, can be defined any time.
Control of Measurement – Subsystem POWer:ABURst
The subsystem POWer:ABURst controls the access burst power measurement.
INITiate:POWer:ABURst[:GMSK] Start new measurement
⇒
RUN
ABORt:POWer:ABURst[:GMSK] Abort measurement and switch off
⇒
OFF
STOP:POWer:ABURst[:GMSK] Stop measurement after current stat. cycle
⇒
STOP
CONTinue:POWer:ABURst[:GMSK] Next meas. step (only stepping mode )
⇒
RUN
Description of command FW vers.
These commands have no query form. They start or stop the measurement, setting it to the status
indicated in the top right column. V3.0
CONFigure:POWer:ABURst[:GMSK]:EREPorting < Mode > Event Reporting
<Mode> Description of parameters Def. value Def. unit FW vers.
SRQ |
SOPC |
SRSQ |
OFF Service request
Single operation complete
SRQ and SOPC
No reporting
OFF – V3.0
Description of command
This command defines the events generated when the measurement is terminated or stopped (event reporting,
see chapter 5 of CMU manual).
深圳德标仪器
135-1095-0799