Instructions

RIGOL Chapter 2 Command System
2-42 MSO7000/DS7000 Programming Guide
:CHANnel<n>:SCALe
Syntax
:CHANnel<n>:SCALe <scale>
:CHANnel<n>:SCALe?
Description
Sets or queries the vertical scale of the specified channel. The default unit is V.
Parameter
Name
Type
Range
Default
<n>
Discrete
{1|2|3|4}
——
<scale>
Real
Related to input impedance and probe
ratio:
when the input impedance is 1 MΩ, the
probe ratio is 1X: 1 mV to 10 V
when the input impedance is 50 Ω, the
probe ratio is 1X: 1 mV to 1 V
100 mV
Remarks
You can use the :CHANnel<n>:VERNier command to enable or disable the fine
adjustment setting for the vertical scale of the specified channel. By default, the fine
adjustment is Off. At this time, you can set the vertical scale at 1-2-5 step, i.g. 10 mV, 20
mV, 50 mV, 100 mV……100 V (probe ratio is 10X). When the fine adjustment is enabled,
you can further adjust the vertical scale within a relatively smaller range to improve
vertical resolution. If the amplitude of the input waveform is a little bit greater than the
full scale under the current scale and the amplitude would be a little bit lower if the next
scale is used, fine adjustment can be used to improve the amplitude of waveform display
to view signal details.
Return
Format
The query returns the vertical scale in scientific notation.
Example
:CHANnel1:SCALe 1 /*Sets the vertical scale of CH1 to 1 V.*/
:CHANnel1:SCALe? /*The query returns 1.*/
:CHANnel<n>:IMPedance
Syntax
:CHANnel<n>:IMPedance <impedance>
:CHANnel<n>:IMPedance?
Description
Sets or queries the input impedance of the specified analog channel. The default unit is
Ω.
Parameter
Name
Type
Range
Default
<n>
Discrete
{1|2|3|4}
——
<impedance>
Discrete
{OMEG|FIFTy}
OMEG
Remarks
 OMEG: 1 MΩ. This indicates that the input impedance of the oscilloscope is rather
high, and the current flowing from the circuit under test to the oscilloscope can be
ignored.
 FIFTy: 50 Ω. This indicates that the oscilloscope shall be matched with a device
whose output impedance is 50 Ω.
Return
Format
The query returns OMEG or FIFT.
Example
:CHANnel1:IMPedance FIFTy /*Sets the input impedance of CH1 to FIFTy.*/
:CHANnel1:IMPedance? /*The query returns FIFT.*/