Table of Contents
Advertisement
SECTION
U
CALIBRATION
After
referring
to the following preliminary data,
perform
calibration, as
necessary, per
Table
5-1.
If
performing
partial
calibration,
check
previous
settings
and adjustments
for
applicability.
1.
Refer
to calibration
drawing. Figure
5-2,
and
calibra-
tion chart
(Table
5-1).
2.
Unless otherwise noted,
all
measurements
made
at
the
50£2
OUT
connector should be terminated
into a
50J2 (±0.1%)
load.
3.
TPs
(Test Points)
and
adjustments
are prefixed
as
follows:
A1
—
Power Supply
A2
—
Digital
Board
A3
—
Analog Board
4.
Before connecting the
unit to
an
ac source,
check
the
ac
line circuit
to
make
sure
the
115/230 and
HI/LO
switches
are set
at
the correct position
(see Para-
graph
2.2.1).
5.
Start
the
calibration
by
setting
the front panel switches
or
program
for
the following:
Power
On
Unit
Select
Select unit to
be
calibrated
Mode
Continuous
Frequency
9.99E2
Amplitude
9.99E0
Offset
.
0.00
Function
Output On/Off
On
6.
Allow
the
unit to
warm
up
at
least
30
minutes
for
final
calibration.
Table
5-1.
CALIBRATION
CHART
Check
Tester
Calibrated Points
Program
Seq
Control
Desired Results
Remarks
Power
Voltmeter
A3TP2
(+15V),
A3TP1
See
initial
1
A1R24
+15V
±20
mV
Supply
(Gnd)
conditions.
Regulation
A3TP3
(— 15V),
A3TP1
-
-15V
±50
mV
A3TP4
(+5V),
A3TP1
-
+5V
±250
mV
Triangle
Oscilloscope
A3TP5,
A3TP1
(Gnd)
A3R59
+1
.25V
±5
mV
Amplitude
A3TP5,
A3TP1
A3R62
-1.25V
±5
mV
Symmetry
Oscilloscope
50J2
OUT
Func
JL
6
A3R16
Minimum
fre-
*While opening
and
Freq
0.1
0E4
:
quency change*
shorting
VCG
IN to
BNC
case.
7
A3R90,
Time symmetry
*Use
if
necessary
for
A3R17*
error
<1%
adjustment
of
proper
frequency.
Freq
0.01
E4
8
A3R44,
Time symmetry
*Use
if
necessary
for
A3R17*
error
<1%
adjustment
of
proper
frequency.
Repeat 7
and
8, as
necessary,
for
optimum
results.
Advertisement
Table of Contents
