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:CHANnel<n> Commands 10

Agilent InfiniiVision 3000 X-Series Oscilloscopes Programmer's Guide 271

:CHANnel<n>:PROBe

(see page 1138)

Command Syntax

:CHANnel<n>:PROBe <attenuation>

<attenuation> ::= probe attenuation ratio in NR3 format

<n> ::= 1 to (# analog channels) in NR1 format

The obsolete attenuation values X1, X10, X20, X100 are also supported.

The :CHANnel<n>:PROBe command specifies the probe attenuation factor

for the selected channel. The probe attenuation factor may be 0.1 to

10000. This command does not change the actual input sensitivity of the

oscilloscope. It changes the reference constants for scaling the display

factors, for making automatic measurements, and for setting trigger levels.

If an AutoProbe probe is connected to the oscilloscope, the attenuation

value cannot be changed from the sensed value. Attempting to set the

oscilloscope to an attenuation value other than the sensed value produces

an error.

Query Syntax

:CHANnel<n>:PROBe?

The :CHANnel<n>:PROBe? query returns the current probe attenuation

factor for the selected channel.

Return Format

<attenuation> ::= probe attenuation ratio in NR3 format

See Also • "Introduction to :CHANnel<n> Commands" on page 262

• ":CHANnel<n>:RANGe" on page 277

• ":CHANnel<n>:SCALe" on page 278

• ":CHANnel<n>:OFFSet" on page 270

Example Code

' CHANNEL_PROBE - Sets the probe attenuation factor for the selected

' channel. The probe attenuation factor may be set from 0.1 to 10000

myScope.WriteString ":CHANnel1:PROBe 10" ' Set Probe to 10:1.

See complete example programs at: Chapter 40, “Programming Examples,”

starting on page 1147

Agilent Technologies InfiniiVision 3000 X-Series Programmer's Guide

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