Tektronix TDS420A User Manual

Page of 433
Command Groups
TDS Family Oscilloscope Programmer Manual
2–37
Vertical Commands
Vertical commands control the display of channels and of main and reference
waveforms. Table 2–22 lists these commands.
The 
SELect:<wfm> command also selects the waveform many commands in
other command groups use.
You may replace VOLts for SCAle in the vertical commands. This provides
program compatibility with earlier models of Tektronix digitizing oscilloscopes.
Table 2–22: Vertical Commands 
Header
Description
CH<x>?
Return vertical parameters
CH<x>:BANdwidth
Channel bandwidth
CH<x>:COUPling
Channel coupling
CH<x>:DESKew (TDS 500C, 600B, & 700C)
Channel deskew time
CH<x>:IMPedance
Channel impedance
CH<x>:OFFSet
Channel offset
CH<x>:POSition
Channel position
CH<x>:PROBE?
Return channel probe attenuation
CH<x>:PROBECal? 
(TDS 500C, 600B, & 700C)
Return channel probe cal status
CH<x>:PROBEFunc:EXTAtten
(TDS 500C & 700C)
Sets the state of the external attenuation for
the specified channel to the specified value
CH<x>:PROBEFunc:EXTDBatten
(TDS 500C & 700C)
Sets the state of the attenuation for the
specified channel to the specified value, in dB
CH<x>:SCAle
Channel volts per div
CH<x>:VOLts
Same as CH<x>:SCAle
MATH<x>?
Return math waveform definition
MATH<x>:DEFine
Define math waveform
MATH<x>:NUMAVg
(TDS 510A, 500C, 600B, & 700C, 
some models require Option 2F)
Acquisition number at which to begin
exponential averaging
MATH<x>:PROCessing
(TDS 510A, 500C, 600B, & 700C, 
some models require Option 2F)
Math waveform averaging on or off
SELect?
Return selected waveform
SELect:CONTROl
Front-panel channel selector
SELect:<wfm>
Set selected waveform