Operating instructions

J
B3 .
CHECK/ADJUST MAGNIFIER
GAIN
AND REGISTRATION (R430,R445)
a . Set the time-mark generator for 0 .1-millisecond
markers .
b . Set the MAG switch
to
X10
and set the POSITION
controls to midrange . Set
the mainframe intensity
controls for the desired
display .
c . Check for 1 marker/division over the center
8
divisions of display (position as necessary) .
d . ADJUST---13430 (Mag Gain) for 1 marker/division
over the center 8 divisions of display .
e . Set the time-mark generator for
0 .5-millisecond
markers . Align the center time marker with
graticule
center .
J f . CHECK----Set the MAG switch to X1 and check
that
the center time marker is at graticule center
within
0 .5 division .
g . ADJUST-----13445 (Mag Reg) to align the center time
marker with graticule center .
h .
INTERACTION---Set the MAG switch to X10 and
repeat parts e, f,
and g as necessary .
J B4 . CHECK VARIABLE
TIME/DIVISION
AND VARIABLE HOLD OFF
a . Press and release the VARIABLE TIME/DIV control
for uncalibrated sweep rates . Set the VARIABLE
control
fully
clockwise and note 3 time markers in
10
graticule divisions .
J b . CHECK---Set the VARIABLE control fully counter-
clockwise and check for 2 divisions or less between 5-
millisecond markers
.
c . Press the VARIABLE control in for calibrated
sweep
rates .
d . Set the LEVEL control for a free-running
display
(TRIG'D light off) .
e . Set the HOLD OFF control fully counterclockwise
.
V f .
CHECK----Rotate the HOLD OFF control slowly
clockwise throughout
its range and check that the
display
(3 time
markers
in 10 divisions) will stabalize
at least 3 times throughout the range
of the HOLD
OFF control (disregard any slow drift) .
g . Set the HOLD OFF control counterclockwise to MIN
and set the LEVEL control for a stable display .
J PerformanceRequirement check ; see introductory information .
Performance Check and Adjustment---71387
B5 . ADJUST
50 ns SWEEP TIMING (C330)
a . Set the TIME/DIV switch to 50 ns and set the time
mark generator for 50-nanosecond markers .
b . Check for 1 marker/division over the center
8
divisions of display (position as necessary) .
c . ADJUST---C330 (50 ns Timing) for 1 marker/
division
over the center 8 divisions of display (position
as necessary) .
V
B6 .
CHECK
INTERNAL CLOCK FREQUENCY
RANGES
a . Set the 71381 TIME/DIV switch to
10
,us .
b
.
Connect the frequency counter I IX probe tip to
TP673 and the ground lead to the GND test point
.
V c . CHECK ----That the clock frequency
is 10.240 MHz,
within the limits of 10 .230 to 10 .250 MHz .
Check that
the repetition rate output for each TIME/DIV
switch
setting is approximately the same as that
shown in
Table 5-2 .
d . Set the AQS CLOCK/AQR switch
to I NT
=
1000, the
TIME/DIV switch to
50
ors, and
the MAG switch to X1
(in) .
TIME/DIV
TABLE 5-2
Acquire Clock Repetition
Rate Output
MAG X10
(Button Out)
5 ms
~~~ 10 ms
20
ms
__
50 ms
.1 s
.5 s
1 s
------- - --------
2 s
5_S
MAG X1
.1 ms
2 ms
5 ms
1 ms
2 .048 MHz

20 .48
MHz T
1` .024^M-Hz
~ 10 .24 MHz
_L
. . . .m- ._ .-_----------
512 .0 kHz
2 04 .8 kHz
102 .4 kHz
5 .12 MHz
-------------
2.048 MHz
1 .024 MHz ' _^vW
5- 1 1
51 .2 kHz
20 .48 kHz
0 .24Hz
-k-__
.__ .__
-------
512 .0 ~kHz
__
_
.__ . .~
204 .8 kHz
_-' 102- .4
-_
kHz
_ 5
.12 . . . kHz
_ . . . . . _- . 5 _ 1 _ .2 _
._kHz
_
2 .048 kHz 20 .48 kHz-
.
.
_ __ ._
1 - .024 kHz
-__
. . .__ . ._
10 .24 W kHz
512 .0 Hz
--5
.12
.-------- _ . _ .
kHz
W 204  8 - . Hz 2 .048 kHz
-
11 __
102 .4 Hz
1 .024 kHz
512H?
512 .0 Hz
_ -_ .
20 :
48 _
.H?-
T ._ ._ ._ .- . .__ ._ _ . ._ . .--------- __-
204
.8 Hz