Technical data

Channel Commands 12
Agilent Infiniium 9000 Series Oscilloscopes Programmer's Reference 227
:CHANnel<N>:PROBe:EXTernal:OFFSet
Command :CHANnel<N>:PROBe:EXTernal:OFFSet <offset_value>
The :CHANnel<N>:PROBe:EXTernal:OFFSet command sets the external
vertical value for the probe that is represented at the center of the display
for the selected channel. Offset parameters are probe and vertical scale
dependent.
When using the 113xA series probes, the CHANnel<N>:PROBe:STYPe
command determines how the offset is applied. When
CHANnel<N>:PROBe:STYPe SINGle is selected, the
:CHANnel<N>:PROBe:EXTernal:OFFset command changes the offset value of
the probe amplifier. When CHANnel<N>:PROBe:STYPe DIFFerential is
selected, the :CHANnel<N>:PROBe:EXTernal:OFFSet command changes the
offset value of the channel amplifier.
<N> An integer, 1-4.
<offset_value> A real number for the offset value at center screen. Usually expressed in
volts, but can be in other measurement units, such as amperes, if you have
specified other units using the :CHANnel<N>:PROBe:EXTernal:UNITs
command.
Example This example sets the external offset for the probe on channel 1 to 0.125
in the current measurement units:
myScope.WriteString ":CHANNEL1:PROBE:EXTERNAL ON"
myScope.WriteString ":CHANNEL1:PROBE:EXTERNAL:OFFSET 125E-3"
Query :CHANnel<N>:EXTernal:PROBe:OFFSet?
The :CHANnel<N>:PROBe:EXTernal:OFFSet? query returns the current
external offset value for the probe on the specified channel.
Returned Format
[CHANnel<N>:PROBe:EXTernal:OFFSet] <offset_value><NL>
Example This example places the external offset value of the probe on the specified
channel in the variable, Offset, then prints the contents of the variable to
the computer's screen.
myScope.WriteString ":SYSTem:HEADer OFF"
myScope.WriteString ":CHANNEL1:PROBE:EXTERNAL ON"
myScope.WriteString ":CHANNEL1:PROBE:EXTERNAL:OFFSET?"
varOffset = myScope.ReadNumber
Debug.Print FormatNumber(varOffset, 0)
NOTE
CHANnel<N>:PROBe:EXTernal command must be set to ON before issuing this command
or query or this command will have no effect.