Tektronix 2230, Service Manual

Page: 49 / 483

Operating Information— 2230 Service
STORE Mode
In STORE mode, many of the crt readout displays are
associated with the parameters of stored waveforms.
PARAMETER READOUT. Displays the VOLTS/DIV,
SEC/DIV and B DELAY TIME settings of the displayed
waveforms on which the cursors are placed. The AC-
GND-DC input coupling selection is indicated in the associ­
ated VOLTS/DIV readout with a tilde symbol (~) above the
volts symbol for AC, a ground symbol (rh ) for GND, and
no extra symbol for DC input coupling. If the VOLTS/DIV
switch is switched beyond the available expansion or
compression range, the readout is tilted, indicating that the
VOLTS/DIV switch setting and the VOLTS/DIV readout no
longer agree. In 4K COMPRESS, a c is displayed in front
of the SEC/DIV readout.
CURSOR READOUT. Displays the voltage difference
(either AV 1 or AV 2) and the time difference between cur­
sors. When esither BOTH or B HORIZONTAL mode is
selected, the DELAY TIME POSITION is displayed.
Independent
fields for CH 1 VOLTS/DIV, CH 2
VOLTS/DIV, A SEC/DIV, and B SEC/DIV are provided.
When making ground referenced voltage measurements
(ground dot displayed and cursor on ground dot) the A
symbol is replaced by a ground symbol (rh).
When the acquisition record length is longer than one
screen, a bar graph is used to indicate the position of the
display window within the acquisition record.
DELAY TIME
CH 1 DELTA VOLTS ^
CH 2 DELTA VOLTS — .
DISPLAY WINDOW
INDICATOR
CH 1
VOLTS/DIV
T
CH 2
VOLTS/DIV
i T ^ i i r i ~ T ' ~ ~ n n — r
K
1 I
\ \
f *
1
hi i - i I I 1 1: t i 1 i
1— -
1 1
•
k
1
T r
v
/
T
t
/ L UI
J
\
x
■
\ / t
_
CURSOR
j
1 /
ACTIVE \
CURSOR \
SA\
ST
I E
REF
ATUS
-
1 /
TRIGG!
p o s in r
ER
*NJ . .
i-
\ \
DISPLAY
W I N D O W
-
INDIC
;
ATOR
-
?
I
'■ H I
I I - i
|
- 1 1
1
STORAGE
MODE
V
A SEC/DIV
DELTA TIME
OR
1/DELTA TIME
SAVE INDICATOR
OR
ACQUISITION LIMIT
INDICATOR
B SEC/DIV
<998-12
Figure 2-12. Crt readout display.
2-22