Annex
NRP2
387User Manual 1173.9140.02 ─ 07
The figure above shows the basic structure of the trigger system. It is possible to
improve the sequence of measurement using the commands from the TRIGger com-
mand system.
A.4.3 Logic relationship of command systems SENSe, CALCulate and
UNIT
The following section provides an overview of the measurement procedure of the
R&S
NRP2. The commands are mentioned as examples. These commands are descri-
bed in detail in chapter 6, "Remote Control - Commands", on page 193.
To perform measurements with the R&S NRP2, the user should have a good under-
standing of the trigger system and be familiar with the result processing. The measured
values delivered by the sensors cannot be directly queried. As shown in figure below,
the raw data is first determined in the sensors taking into account the SENSe settings.
It is then transferred to the CALCulate blocks where the measured values of up to two
sensors are processed and made available to the user in the unit defined by UNIT.
CALC[1..8]:MATH:EXPR
- "SENSn"
- "SENSn - SENSm"
- "SENSn / SENSm"
- "REFL"
- "SWR
- "RLOS"
CALC[1..8]:REL
UNIT[1..8]:POW
UNIT[1..8]:RAT
Data output:
output queue in
REMOTE mode
or display
in LOCAL mode
Measured values
("raw data")
CALCulate UNITSENSe
SENS[1..4]:...
Fig. 1-6: Processing of measured values in the R&S
NRP2
The high-level commands and the SENSe block allow indices to be specified. These
indices refer to the connected sensors (indices 1 to 4) for the SENSe commands
whereas the indices of the high-level commands select the CALCulate blocks (indices
1 to 8). Depending on the configuration of the first CALCulate block,FETCh? (same
meaning as FETCh1?) may not deliver the measured value of sensor 1 in contrast to
the above examples. After*RST, the first CALCulate block delivers the measured
value of sensor 1 (CALC1:MATH
"(SENS1)") and the second one the measured
value of sensor 2, etc. (see
SYSTem:PRESet on page 325).
A.4.4 Measuring with low-level commands
Low-level commands allow the user to perform the most important modifications on the
measurement configuration. In the present context, low-level commands are all com-
Programming Measurements
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