If the source for signal expansion shown in the Displayed Trace field
(V) is not X-Chart I, you must redefine the expansion signal source
CHAN I (see Section 8.3).
10)
Press EXPAND B (46) in order to expand a second portion (segment)
of CHAN I.
II) Select EXPAND B for display control by pressing the SELECT push
button (44). Redefine EXPAND B to be an expansion of channel 1
necessary.
12)
Choose the segment of interest by adjusting Horizontal POSITION
control (39). The number of the selected segment is displayed
the upper right corner of the Displayed Trace field.
13) Position the expanded trace in lower grid by adjusting the vertical
POSITION control (40).
14)
Select EXPAND A for display control.
15)
Choose another segment of interest (39).
II. 125 Segment Memory Partitioning
To make a sequential recording of 125 single events, you need only
modify the value displayed in the # Segments for SEONCE line of the
Panel Status menu by pressing Modify # Segments push button (4) until
the value 125 appears in the # Segments for SEQNCE line.
Keeping all other settings as above, generate 125 triggers. The
resulting display shows the same waveform but the number of digitized
points per segment has changed from 1024 to 256.
Resulting display with 31 segments:
kJJiJJ|lJiJmdJJdJJJhJlhlJkJJiJm
I I II II II I III III IIIII IIII III III I II II
Panol
STATUS
PANEL I- ~--n---r -r- -r- r----T- 1----1--
8
I
~.I ~e>.1 V
X-Cho~ 1 24.
.] ~Ji~.5 Y
RS2S2
SETUP
Plc*.~."
OFP
L
Figure 8.5
Chant 91x
.~.~ V
Ch 4.>.’J. V~
T/dlv .t.ue Ch2 50mV
TN.O .00 d:Lv + CHANt ,,
8-7
Basic 9400A Waveform Measurements
and Operating Procedures
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