(# #,#'&+
*.# &-$
1Ć3
The signal acquisition system provides fullĆfeatured vertical channels (four
on the TDS 640A and 644A, two on the TDS 620A) with calibrated vertical
scale factors from 1 mV to 10 V per division. All four channels can be acĆ
quired simultaneously.
Each of the four channels can be displayed, vertically positioned, and offset,
can have their bandwidth limited (100 MHz or 20 MHz) and their vertical
coupling specified. Fine gain can also be adjusted.
Besides these channels, up to three math waveforms and four reference
waveforms are available for display. (A math waveform results when you
specify dual waveform operations, such as add, on any two channels. A
reference waveform results when you save a live waveform in a reference
memory.)
There are three horizontal display modes: main only, main intensified, and
delayed only. You can select among various horizontal record length setĆ
tings.
A feature called Fit to Screen" allows you to view entire waveform records
within the 10 division screen area. In other words, waveforms are comĆ
pressd to fit on the screen. (see TableĂ1Ć1)
$132'* &!," .*+-+ #.#+#'&+ (* '* %($+
(* #.#+#'& & #. )-&
#.#+#'&+ (* '*
*
&
,"
%($#.#+#'& #. )-&
#, ,' *&
#, ,' *&
500 10 divs 10 divs
1000 20 divs 10 divs
2000 40 divs 10 divs
Both the delayed only display and the intensified zone on the main intensiĆ
fied display may be delayed by time with respect to the main trigger. Both
can be set to display immediately after the delay (delayed runs after main
mode). The delayed display can also be set to display at the first valid
trigger after the delay (delayedĆtriggerable mode).
The delayed display (or the intensified zone) may also be delayed by a
selected number of events. In this case, the events source is the delayedĆ
trigger source. The delayed trigger can also be set to occur after a number
of events plus an amount of time.
#!&$ )-#+#,#'&
/+,%
'*#0'&,$ /+,%
To Next Page
Loading...
