Performance
Check-7M13
9. Select
a
n
y
character or
symbol
f
o
r
display
in
th
e first character
position.
10.
Press
and
hold the
MODIFY pushbutton
w
h
i
le
selecting,
at
random,
sev
e
r
a
l
different characters or
symbols.
The character
selected in s1ep
9
should
change
to each
successively
selected
character
or
symbol
without
shifting
to
the next
display
position.
11. Release the
MODIFY
pushbutton
and
repeat
steps
9 and
10
for
each
of
the remaining character
display positions.
This
check
is
not necessary for
the tenth (Jast)
character position.
12.
Press
the ERASE pushbu
tt
o
n
.
13. Select
the
chan net
2
WRITE
position by pressing the LOWER pushbutton.
14.
Repeat
steps
2
through
12
for
channel
2.
15.
Select
the
CAMERA
COUNTER
by pressing
the
ON·OFF pushbutton.
16.
Zero the
c
a
me
r
a
counter display by
pressing
and re
l
e
a
s
i
ng
the (P)RESET
pushbutton.
The display
should
read
00
in ch
a
nn
e
l
2.
17.
Press
and
hold
th
e
(P)RESET
pushbutton
while
pressing
two
of
the
number pushbuttons. The
numbers
selected
should
now appear
as
the
camera count. For
example,
if
n
u
m
be
r
s
2 & 3
are
pressed in
that order,
the
d
i
sp
l
a
y
will read 23.
18.
Press
the ADVANCE
pushbutton. The camera
count
should increase by one u
n
i
t
each
t
i
m
e
this
button
is
pressed
a
n
d released.
19. Connect
the
shutter of
a
Tektronix
C·50
series
camera
to th
e SYNC IN jack on the front panel of
the
Readout Unit using
the
remote advance cable supplied
with
the
instrument.
20.
Operate the
sh
u
tt
e
r
(the camera
sh
ou
l
d
not contain film
for
this
check) and check that
the
camera
count
i
s
advanced
by one unit
each
time
the
shutter operates.
NOTE
If a
C-50
series camera is not available
for
this check, step
20
can be made by shorting the
shutter
connector
prongs
of
the remote advance cable together. This will simulate the camera
shutter action and cause
the camera count to advance.
4-2