Chapter 2 Vertical System Setting RIGOL
MSO4000/DS4000 User’s Guide 2-9
Active Probe
1. Probe Type
Probe Type displays “Active Probe”; for example, when RIGOL RP7150 probe
is connected.
Note: When a 50 Ω active probe is connected, the input impedance of the
channel (refer to “To Specify the Input Impedance”) will be set to “50 Ω”
automatically.
2. Ratio
For active probes, the oscilloscope can identify the probe ratio automatically. If
the probe currently connected supports multiple probe ratios, press Ratio and
turn the multi-function knob
to select the desired probe ratio; or press
Ratio continuously to switch the current probe ratio.
3. Front-End
Press Front-End to select the probe front end that matches the probe actually
connected. You can select single-end or differential.
4. Probe-Cal
The oscilloscope provides the calibration function for active probes. This
function uses the fast edge signal output from the [Trig Out/Calibration]
connector at the rear panel of the instrument as the probe calibration signal.
Before performing probe calibration, press Utility AuxOutput and select
“Fast” to configure the [Trig Out/Calibration] connector at the rear panel of
the instrument to output fast edge signal.
The following part introduces how to calibrate the probe via the oscilloscope
(take CH1 as an example) using PCK100 active differential probe calibration kit
by taking RP7150 as an example. For the detailed calibration procedures, please
refer to
RP7000 Series Active Probe User’s Guide
.
1) Connect RP7150 to CH1 input terminal of the oscilloscope correctly.
2) Press CH1 Probe Probe-Cal to open the probe calibration menu. At
this time, the probe calibration prompt message is displayed.
3) Connect the calibration board to CH2 input terminal of the oscilloscope and
the [Trig Out/Calibration] connector at the rear panel respectively using
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