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Operating
Instructions-7M13
OPERATION
The
7M13
Readout Unit will operate in any plug-in
compartment
of a Tektronix 7000-series
oscilloscope equipped with
a
readout system. The
7M13
Readout Unit is activated by pressing
it
firmly into
position in
a
compartment of the oscilloscope mainframe. The display will
appear
on the CRT in the
position
associated
with the selected plug·in slot.
Channel Selection
The
WRITE pushbuttons provide
channel
selection.
Channel
1
is
selected
by pressing the UPPER
pushbutton and
channel
2 by pressing the LOWER pushbutton. These pushbuttons illuminate (in
compatible mainframes)
to
indicate the position selected.
Erase
The ERASE pushbutton
must
be
pressed before entering data for display. This clears
the
selected
channel of any previously entered
data
and resets the
7M13
circuits to accept new data.
The
ERASE
pushbutton does not affect the
camera
counter display.
Data Display
Both channels have
a
d
i
s
pl
a
y capacity of
ten characters
or
sp
a
ce
s
.
Each character,
induding the decimal
point, requires one
space
in the display.
Each ch
a
ra
cter
pushbutton
switch
is labeled with the character
it selects.
Pressing
any of these switches
causes
its
associated character
to
be
d
i
s
p
l
a
y
ed
on the CRT. Spacing between characters or words is provided
by the SPACE pushbutton. Pressing this switch
causes
the
display to skip one
space.
Subsequent pressing of
a
character
switch
when
all ten display
spaces
are filled will cause the tenth
space
character to be
replaced
with the newly
selected
one.
Modify
The
M
O
D
I
F
Y
pushbutton allows the last entered character to
be
changed
without
erasing
the display.
This switch must be
pressed and
held while
the
new character switch is pressed. The last entered character
will then
be
rep
l
ac
ed
with the newly entered one.
Camera Counter Operation
The CAMERA COUNTER
is
activated
by pressing the PUSH ON switch. The switch locks
in and
illuminates when the CAMERA COUNTER
is
selected. This causes the 2-digit camera count to
be
displayed
in channel 2.
The camera counter display is set to zero by pressing the (P)RESET switch.
Once
this is done,
two
zeros
will appear in the display
as
the camera count. If it is desired to set the
camera
count to some number other
than
zero,
the
(PIRESET switch must be pressed
and
held while the desired number
is
entered. When
presetting the CAMERA COUNTER, the first number pressed will
be
entered
as
the tens
digit and the
second
as
the units digit.
1-2