Technical data

200 Agilent Infiniium 9000 Series Oscilloscopes Programmer's Reference
12 Channel Commands
:CHANnel<N>:INPut
Command :CHANnel<N>:INPut <parameter>
The :CHANnel<N>:INPut command selects the input coupling, impedance,
and LF/HF reject for the specified channel. The coupling for each channel
can be AC, DC, DC50, or DCFifty when no probe is attached. If you have
an 1153A probe attached, the valid parameters are DC, LFR1, and LFR2
(low- frequency reject).
<N> An integer, 1-4.
<parameter> The parameters available in the command for Infiniium are:
• DC: DC coupling, 1 MOhm impedance
• DC50 | DCFifty: DC coupling, 50 Ohm impedance
• AC: AC coupling, 1 MOhm impedance
• LFR1 | LFR2: AC 1 MOhm input impedance
Example This example sets the channel 1 input to DC50.
myScope.WriteString ":CHANNEL1:INPut DC50"
Query :CHANnel<N>:INPut?
The :CHANnel<N>:INPut? query returns the selected channel input
parameter.
Returned Format
[CHANnel<N>:INPut] <parameter><NL>
Example This example puts the current input for channel 1 in the string variable,
strInput. The program then prints the contents of the variable to the
computer's screen.
myScope.WriteString ":SYSTEM:HEADER OFF"
myScope.WriteString ":CHANNEL1:INPUT?
strInput = myScope.ReadString
Debug.Print strInput