TABLE
6-10
Alternate RMS Voltage Measurement Accuracy
VOL
TS-mA/DIV
Amplitude
Setting
Calibrator
(blue scale)
Settings
Limits
0.1
0.2 V
This reading should .
1
2V
be
the
same
as
the
Digital
Voltmeter
10
20 V
for
the
same
number
100
100 V
of
digits
13.
CHECK
RMS
CURRENT
MEASUREMENT
ACCURACY
@
NOTE
To
verify the specified accuracy
of
therms
current ranges with the procedure below,
re-
quires the use
of
the
AC
Calibration Standard
(see footnote 3
in
Table
6-1
).
If
all previous
calibration steps have been accomplished, each
circuit function involved
in
rms current
measurement has been checked and adjusted;
therefore, further measurement accuracy
checks
may
not
be necessary
for
the instru-
ments intended
use.
a.
Set
mA
pushbutton
in.
b. Connect the
AC
Calibration Standard (Current con-
figuration)
to
the
mA
-
D.
and
common jacks using
two
banana-plug
to
BNC adapters
and
a cable.
Cal
ibration-213
Service
c.
Set
VOL
TS
-
mA/D
IV
and
the Standard
as
shown in
Table6-11.
CHECK-Reading
is
within
limits
shown in Table 6-11.
e.
Disconnect Standard.
TABLE6-11
RMS Current Measurement Accuracy
VOLTS-mAIDIV
AC
Calibration
Setting Standard
(blue scale)
Setting
Reading
Limits
(set at
40
kHz)
0.1
0.200
mA
0.200
.1950
to
.2050
1 2.00
mA
2.000 1.925
to
2.075
10
20.00
mA
20.00
19.25
to
20. 75
100 200.0
mA
200.0
192.5
to
207.5
1000 1000
mA
1000
0925
to
1075
END OF
PROCEDURE
6-17
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