Chapter 2 Vertical System Setting RIGOL
DS4000E User’s Guide 2-7
Passive Probe
1. Probe Type
Probe Type displays “Nor-Probe”; for example, when RIGOL RP3300A probe is
connected.
2. Ratio
For some normal passive probes, the oscilloscope can identify the probe ratio
automatically. If not, press Ratio and turn the multi-function knob to select
the corresponding probe ratio; or press Ratio continuously to switch the current
probe ratio. The probe ratios available are listed in
Table 2-1.
Table 2-1 Probe Attenuation Coefficient
Probe Ratio
(waveform display amplitude : actual waveform amplitude)
0.02X
0.05X
0.1X
0.2X
0.5X
1X
2X
5X
10X
20 X
50 X
100 X
200 X
500 X
1000 X
0.02:1
0.05:1
0.1:1
0.2:1
0.5:1
1:1
2:1
5:1
10:1
20:1
50:1
100:1
200:1
500:1
1000:1
3. Bias Voltage
The oscilloscope provides the bias voltage adjustment function for normal
probes. This function is used to adjust the signal under test that exceeds the
measurement range of the probe to an appropriate range to ensure the integrity
of the signal under test. Press Bias Voltage and turn the multi-function knob
to adjust the DC bias voltage. The range is from -4*Vertical Scale+Vertical
Position to 4*Vertical Scale+Vertical Position.