Keithley 7037, Инструкция по эксплуатации

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Service Information
6-2
Performance verification
The following paragraphs discuss performance verificatio
procedures for the Model 7037, including channel resis-
tance, offset current, contact potential, and isolation.
CAUTION
Contamination will degrade the perfor-
mance of the card. To avoid contamina-
tion, always grasp the card by the side
edges and shields. Do not touch the con-
nectors and do not touch the board sur-
faces or components. On plugs and
receptacles, do not touch areas adjacent
to the electrical contacts.
NOTE
Failure of any performance verification
test may indicate that the switch card is
contaminated. See the Handling and
cleaning precautions paragraph to clean
the card.
Environmental conditions
All verification measurements should be made at an ambient
temperature between 18 ° and 28 ° C, and at a relative humid-
ity of less than 70%.
Recommended equipment
Table 6-1 summarizes the equipment necessary for perfor-
mance verification, along with an application for each unit.
Card connections
The following information summarizes methods that can be
used to connect test instrumentation to the connector card.
Detailed connection information is provided in Section 4.
Table 6-1
Verification equipmen
Description Model Specifications Applications
DMM Keithley Model 2000 100 Ω ; 0.01% Path resistance
Electrometer w/voltage source Keithley Model 6517A 20pA, 200pA; 1%
100V source; 0.15%
Offset current, path isola-
tion
Sensitive Digital Voltmeter Keithley Model 182 3mV; 60ppm Contact potential
Triax cable (unterminated) Keithley Model 7025  Offset current
Low thermal cable
(unterminated)
Keithley Model 1484  Contact potential