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SECTION 1
Performance Verification
1.1
INTRODUCTION
The procedures outlined in this section may be used to
verify that the Model 3930A is operating within the limits
stated in the specifications. Performance verification may
be done when the instrument is first received to ensure
that no damage or n&adjustment has occurred during
shipment. Verification may also be performed whenever
there is a question of instrument accuracy, or following
calibration, if desired.
NOTE
If the instrument is still under warranty (Less
than one year from the date of shipment), and
its performance falls outside the specified
range, contact your Keithley representative or
the factory to determine the correct course of
action.
1.2
ENVIRONMENTAL CONDITIONS
All measurements should be made at 18-28°C (65-82W
and at less than 70% relative humidity.
1.3
INITIAL CONDITIONS
The Model 3930A must be turned on and allowed to
warm up for at least one hour before beginning the verifi-
cation procedures. If the instrument has been subject to
extremes of temperature (outside the range specified in
the previous paragraph), additional time should be al-
lowed for internal temperatures to reach normal operat-
ing temperature. Typically, it takes one additional hour
to stabilize a unit that is 10°C (18'FQ outside the specified
temperature range.
1.4
LINE POWER
Be sure to set the line voltage switch for the correct volt-
age. The instrument should be operated at a voltage
within SO% of the line voltage setting and at a frequency
from 48 to 62Hz.
1.5
RECOMMENDED TEST EQUIPMENT
Table l-l lists all the test equipment needed for verifica-
tion. The procedure for performance verification is based
on using this exact equipment.
NOTE
The verification limits reflect only the accu-
racy specifications of the Model 3930A. They
do not include test equipment tolerance.
Alternate equipment may be used as long as the substi-
tute equipment has specifications at least as good as
those listed in Table l-l.
l-l
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