XITRON 2000I, Руководство пользователя

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Calibration and Maintenance 67
1.
Attach the 2000I or 2000M instrument to a recently zeroed nullmeter.
Measure the actual output level of the 2000 instrument using the
nullmeter. Adjust the instrument, using the arrow
keys, until the output
level is measured to
0.0
µµ
V
, within
0.1
µµ
V, 0.2
µµ
V, 1
µµ
V
and
10
µµ
V
respectively.
9. Calibrate to an output level of
+10.00000mV
. Adjust the output level of
the 2000 instrument to within
0.2
µµ
V
of
10mV
as described in step 2.
This output level may be measured directly by using:
ü
A high precision DMM, or;
ü
A nullmeter to monitor the deviation between this instruments' output
level and that of a precision calibrated
10mV
source, or;
ü
The preferred method of using a nullmeter to monitor the deviation
between this instrument’s output level and the output of a high
precision
100:1
attenuator whose input is obtained from a precision
calibrated
1V
source.
2000
Nullmeter
2000
Nullmeter
100:1 Divider
1V DC
Source