Filter
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8-4
Channel Commands
OFFSet
Example The following example places the current setting of the filter in the string variable, Filter$
10 DIM Filter$[50] !Dimension variable
20 OUTPUT 707;":CHANNEL1:FSELECT?"
30 ENTER 707;Filter$
See Also CHANnel:FDEScription?
OFFSet
Command :CHANnel<N>:OFFSet <offset_value>
This command sets the voltage that is represented at the center of the display for the
selected channel. Offset parameters are probe and vertical scale dependent. For TDR and
TDT applications, when the TDR stimulus is set to differential or common mode, the instru-
ment will change offset to magnify offset. This command is used to set the magnify offset as
well as the offset. <N> represents the channel number and is an integer 1 to 4.
NOTE In Jitter Mode, channel scale and offset controls are disabled. Do not use this command in Jitter Mode. It
generates a “Settings conflict” error.
<offset _value> Offset value at center screen. Usually expressed in volts, but could be in other measurement
units, such as amperes, if you have specified other units using the CHANnel:UNITs command.
Example This example sets the offset for channel 1 to 0.125 in the current measurement units.
10 OUTPUT 707;":CHANNEL1:OFFSET 125E-3"
Query :CHANnel<N>:OFFSet?
The query returns the current offset value for the specified channel.
Returned Format [CHANnel<N>:OFFSet] <offset value><NL>
Example This example places the offset value of the specified channel in the string variable, Offset$.
10 OUTPUT 707;"SYSTEM:HEADER OFF"
20 OUTPUT 707;"CHANNEL1:OFFSET?"
30 ENTER 707;Offset
PROBe
Command :CHANnel<N>:PROBe <attenuation factor>[,{RATio | DECibel}]
This command sets the channel attenuation factor and units. It provides the equivalent func-
tion of the Attenuation Factor setting under the Setup menu’s Channel command. The
default attenuation factor is 1:1 and the default units are ratio. When the TDR stimulus is set
to differential or common mode, the instrument will change offset to magnify offset. This
command is used to set the magnify offset as well as the offset. <N> represents the channel
number and is an integer 1 to 4.
Query :CHANnel<N>:PROBe?
Returned Format [:CHANnel<N>:PROBe] <attenuation factor>, {RATio | DECibel}<NL>
PROBe:CALibrate
Command :CHANnel<N>:PROBe:CALibrate