Functional Check
R&S
®
RT
‑
ZD10/20/30
63
User Manual 1410.4550.02 ─ 01
Measurement:
●
Set the voltage on the DC voltage source so that the DMM displays
e5.000 V
●
Check displayed values in the "Measurement Results" box:
Mean: +5 V ± 250 mV
ProbeMeter: +5 V ± 14 mV
●
Repeat procedure for −5.000 V
●
Check again the measurement results:
Mean –5 V ± 250 mV
ProbeMeter: -5 V ± 14 mV
8.4
Offset Compensation
The offset compensation is checked.
Test setup:
Same as with DC accuracy
R&S RTO settings:
●
Horizontal scale = 10 µs / div
●
Vertical scale = 1.6 V / div
●
Trigger source = Ch1, Trigger mode = Auto, Run cont
●
ACQUISITION key > Decimation = 'High res' > Waveform Arithmet-
ics = 'Average' > Average Count = 16
●
"Meas" menu > Setup > Source = 'Ch1' > Main Measurement =
'Mean' > State = 'on'
●
CH1 key > Offset = 0 V, Position = 0 div
●
"Vertical" menu > Probe Setup > Ch1 > ProbeMeter = 'on' > Micro
button action = 'Set offset to mean'
Measurement:
●
Set the voltage on the DC voltage source so that the DMM displays
e5.000 V.
●
Press the micro button: The "Offset to mean" function of the probe
automatically compensates the applied DC voltage.
●
The oscilloscope waveform should now be on the horizontal center-
line.
●
Switch measurement range:
Vertical scale = 10 mV / div
●
Check displayed values in the "Measurement Results" box:
Mean: +5 V ± 50 mV
Offset Compensation
