Programming examples
R&S
®
NRPM
192
Mannual 1425.8663.02 ─ 08
11.3
Performing measurements in list mode
This section briefly introduces the list mode operation, and describes a program-
ming example for measuring average power sequentially at predefined RF fre-
quency points with the R&S
NRPM OTA Power Measurement Solution in list
mode. The example represents the execution of a R&S
NRPM OTA power sensor
measurement under VISA environment in pseudo code.
About list mode
The list mode enables you, to define a series of measurements at different fre-
quency points in advance. The factors and values, that must be recalculated for
each frequency point, are determined and saved internally before the measure-
ment starts. Both, the R&S
NRPM3(N) sensor module, and the DUT get the list of
frequency points, and the R&S
NRPM3(N) pre-calculates the corresponding
parameters required for the measurement.
Synchronized by an initial RF pulse and a short delay time, the DUT and the
R&S
NRPM OTA power sensor measurement system perform the measurement
for each frequency point automatically. They switch to the next frequency point
controlled by a defined time interval.
t
1
2
3
4
3
1
2
...n
5
Figure 11-1: Time scheme in list mode processing
1 = Start burst
2 = Initial delay
3 = Single measurement time X
4 = Measurement period
5 = Frequency points n
Related list mode parameters
●
Start burst
= RF pulse of at least 10 µs minimum length, sent by the DUT
●
Initial delay
= time after the start burst until the measurement starts
Performing measurements in list mode
