R&S 1129.7246.03, Operating Manual

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R&S ESU Remote Control – Programming Examples
More Complex Programming Examples
7.22 Operating Manual 1302.6163.12 - 03
Fig. 7.48 Block diagram illustrating signal processing by the R&S ESU
Either the root-mean-square power or the peak power is measured, depending on
whether the RMS detector or the PEAK detector is selected. The function always
uses TRACE 1 of the selected screen.
The following parameters are to be set for this measurement:
• Analyzer frequency
• Resolution bandwidth
• Measurement time per single pulse
• Trigger source
• Trigger threshold
• Trigger offset
• Type of power measurement (PEAK, MEAN)
• Number of pulses to be measured
During the measurement, each pulse is mapped into a pixel of the screen, i.e. any
change of the trace can be detected only at the left-hand edge of the screen. Maxi-
mum measurement speed is as usual achieved with the display switched off.
In the example below, a GSM pulse sequence of 8 pulses is measured with 5
µ
s
trigger offset, 434
µ
s measurement time/pulse, video trigger with 50% trigger thresh-
old, and peak detection:
REM ************************************************************************
Public Sub MultiBurstPower()
result$ = Space$(200)
'--------- R&S ESU default setting -------------------------
CALL SetupStatusReg
'Configure status register
status = viWrite(analyzer, "*RST", 4, retCnt)
'Reset instrument
status = viWrite(analyzer, "INST:SEL SAN", 12, retCnt)
'Change into analyzer mode
status = viWrite(analyzer, "INIT:CONT OFF", 13, retCnt)
t
Trigger
Signal
Trigger
Offset
Measurement
Time
Trigger
Signal
Trigger
Offset
Measurement
Time
Trigger
Signal
Trigger
Offset
Measurement
Time
Trigger
Threshold