Tektronix 2245A Operator's Manual page 172

Appendix A
FRONT-PANEL CONTROL
VERTICAL MODE
CH 1, CH 2, and ADD
CH 3 and CH 4
CHOP/ALT
CH 2 INVERT
VERTICAL POSITION
CH 1
(Channel turned on)
CH 2
(Channel turned on)
CH 3
(Channel turned on)
CH 4
(Channel turned on)
CH 1 and CH 2 VOLTS/DIV
(Channel turned on)
CH 3 and CH 4 VOLTS/DIV
(Channel turned on)
A SEC/DIV
a Trace and readout are displayed if channel is active when AUTO SETUP button is pressed,
A-2
Table A-1 (con t.)
AUTO-SETUP C ontrol Settings
CH 1 and CH 2, if ADD only was selected;
otherwise only CH 1, CH 2, or both as
selected.
As selected.
CHOP. If A sweep is 0.1 ms/div or slower,
ALT of 50 |is/div or faster.
Off.
Ground level aligned with 3rd graticule
line from top.3
Ground level aligned with 5th graticule
line from top.3
Ground level aligned with 1st graticule
line from top.3
Ground level aligned with 7th graticule
line from top.3
The VERTICAL POSITION controls do not
affect the position of the trace until
moved through the point corresponding
to the trace position set by AUTO SETUP.
Lowest setting for which all waveform values
are within +2 divisions of ground.3
0.5 V (plus probe factor if applicable) 3
One speed slower than the fastest speed
that displays one complete cycle of the
triggering signal, within the range 2 ms
to 20 ns.
Depending on input signal characteristic, if
more than one complete cycle can be dis­
played at 20 ns the A sweep may be set to
either 50 ns or 20 ns.
AUTO-SETUP ACTION
2245A Operators