Tektronix TDS420A User Manual

Command Descriptions

TDS Family Oscilloscope Programmer Manual

might return 

, which indicates that there is no bandwidth limiting on

channel 1.

Sets or queries the input attenuator coupling setting of the specified channel.
This is equivalent to setting Coupling in the Vertical menu.

Vertical

CH<x>:IMPedance

 !   "   "   #

 sets the specified channel to AC coupling.

 sets the specified channel to DC coupling.

 sets the specified channel to ground. Only a flat ground-level waveform will
be displayed.

 
establishes AC coupling on channel 1.

might return 

, indicating that channel 3 is set to DC coupling.