Functional Check
R&S
®
RT
‑
ZD10/20/30
61
User Manual 1410.4550.02 ─ 01
8.2
DC Offset
The zero error of the probe-oscilloscope system and the zero error of the R&S
ProbeMeter are checked.
Test setup:
●
Probe connected to CH1 of the R&S RTO oscilloscope
●
Signal and ground terminal of the probe shortened by mini clip;
make sure that there is no other ground connection.
R&S RTO settings:
●
Horizontal scale = 10 µs / div
●
Vertical scale = 10 mV / 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 = 'Auto zero'
Measurement:
●
Check displayed values in the "Measurement Results" box:
Mean: 0 V ± 10 mV
ProbeMeter: 0 V ± 4 mV
●
Press the micro button: The Auto Zero function automatically com-
pensates the zero error of the probe-oscilloscope combination.
●
Check again the measurement results:
Mean: 0 V ± 2 mV
DC Offset
