Operating instructions
Performance
Check
and
Adjustment--71387
INDEX
TO
PERFORMANCE
CHECK
AND
ADJUSTMENT
PROCEDURE
PAGE
A
.
TRIGGERING
SYSTEM
1
.
Adjust
DC
Balance
and
Slope Balance
B
.
HORIZONTAL/AQS
SYSTEM
1
.
Set Basic
Sweep
Calibration
. . . . . . . . . . . . . . .
5-10
J
2
.
Check
Sweep
Length
and
Positioning
Range
. . . . . . . . . . .
.
. . . . . . . . . . . . . . . . . . . . . . . . . . .
5-10
J
3
.
Check/Adjust
Magnifier
Gain
and
Registration
(R430,R445)
. . . . . . . . . . . . . . . . . . .
.
.
5-11
V 4
.
Check
Variable
Time/Division
and
Variable
J
Performance
Requirement
check
;
see
introductory
information
.
5-
4
PRELIMINARY
PROCEDURE
1
.
Install
a
7A16A
Amplifier
unit
in
the
left
vertical
compartment,
and
a
7A19
Amplifier
unit
in
the
right
vertical
compartment
of
the oscilloscope
mainframe
.
2
.
Install
the
067-0580-00
plug-in
extender
in
the
B
horizontal
compartment
of
the
mainframe
.
Remove
the
side
covers
and
install
the
71387
in
the
plug-in
extender
.
3
.
Set
the
mainframe
vertical
mode
switch
to
display
the
left
vertical
unit
and
the
horizontal
mode
switch
to
display
the B
horizonal
unit
.
Set
the
mainframe
intensity
controls
fully
counterclockwise
and
set
the
trigger
source
switches
to
vertical
mode
.
4
.
Turn
on
the
mainframe
and
allow
at
least
20
minutes
warmup
before
beginning the
procedure
.
NOTE
The
performance
of
this
instrument
can
be
checked
at
any
ambient
temperature
within
the
0
°
to
+50
°
C
range
unless
stated
otherwise
.
This
instrument
must
be
adjusted
at
an
ambient
temperature
of
+20°
to
+30°
C
for
quoted
accuracy
.
Hold
Off
. . . . . . .
.
.
.
. . . . . . . . . . . . . . . . . . . . . . . . . . .
5-11
5
.
Adjust
50
ns
Sweep
Timing
(C330)
. . . . . . .
5-11
V 6
.
Check
Internal
Clock
Frequency
Ranges
. . .
5-11
J
7
.
Check
External
Clock
Input
. . . . . . . . . . . . . . . .
5-12
8
.
Adjust
Delay
Start
and
Pickoff
Bias
(R305,R530)
.
.
.
.
.
. . . . . . . . . . . .
.
. . .
.
. . .
.
. . . . . . . .
5-12
9
.
Adjust
DVM
Zero
and
Scaling
(R550,R538)
. . . .
.
. . . . . . . .
.
. . .
.
. . .
.
. . .
.
. . . . . . .
.
5-12
10
.
Adjust
10 ps
and
10
ms
Sweep
Timing
(R710,R715)
. . . . . . .
. . .
. . .
.
. . .
.
. . .
.
. . .
.
. . .
.
. . .
.
5-13
V
11
.
Check
Delay
Time Accuracy
.
.
. . . . . . . . . . . .
5-13
J
12
.
Check
Sweep
Timing
.
. . .
.
. . .
.
. . .
.
. . .
.
. . . .
5-14
V
13
.
Check
Magnified
Sweep
Timing
. . . . . . . . . .
5-14
J
14
.
Check
Special
Readout
Encoding
.
. . .
.
. . .
.
5-15
(R85,R80)
.
.
. . .
.
.
.
.
.
. . . . . . . . . . . . . . . . . . . . . . . . . . .
5-5
J
2
.
Check
Triggering
Modes
. . .
.
. . . . . . . . . . . . . . . .
5-5
V
3
.
Check
External
Level
Range
.
.
.
.
. . .
.
. . . . . . .
.
5-6
4
.
Adjust
Trigger
Sensitivity
(R49)
. .
.
.
.
. . . . . . .
.
5-6
J
5
.
Check
External
Triggering
Sensitivity
. . . . . . . .
5-6
J
6
.
Check
Internal
Triggering
Sensitivity
. . . . . . . .
5-7
J
7
.
Check
Internal
Trigger
Jitter
. . .
.
. . .
.
.
.
. . .
.
.
.
5-9
V
8
.
Check
Line
Triggering
.
.
. . .
.
. . .
.
. . .
.
.
.
.
.
. . .
.
5-9