Tektronix TDS420A User Manual

Command Groups

TDS Family Oscilloscope Programmer Manual

Calibration and Diagnostic commands let you start the self-calibration and
diagnostic routines that are built into the oscilloscope. The diagnostic test
operation includes selecting the test sequence, executing the sequence, and
viewing the results. Table 2–7 lists these commands.

Perform an internal self-calibration

Return diagnostic tests status

Return diagnostic test sequence results

$$

Acquisition system diagnostic test sequence

$

Diagnostic test sequence for Acquisition,
Processor, Display, and Front panel

$

Processor diagnostic test sequence

$ !&

Display system diagnostic test sequence

$

Front panel diagnostic test sequence

Control of diagnostic tests

Cursor commands provide control over cursor (caliper) display and readout.
Table 2–8 lists these commands.

"

Return cursor settings

"$

Cursors on or off; select cursor type

" "#

Return H bar settings

" "#

Return distance between H bars

" "#%

Position a horizontal cursor

" "#%$
(TDS 400A)

Position a horizontal cursor in units of % of
vertical range

" "# $

Set which cursor the knob controls

" "#$#

Set H bar units

"

Set cursor tracking mode