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Input connections
U1271A/U1272A Service Guide
• Use shielded twisted pair Teflon- insulated cables to
reduce settling and noise errors. Keep the input cables as
short as possible. Long test leads can also act as antennas
which may pick up AC signals.
• Connect the input cable shields to earth ground.
Please ensure that the calibration standards and test
procedures used do not introduce additional errors. Ideally,
the standards used to verify and adjust the instrument
should be of an order of magnitude more accurate than each
instrument range full- scale error specification.
Test connections to the instrument are best accomplished
using the dual banana plug with a copper wire short
between the two terminals for low- thermal offset
measurement.
We recommend the use of shielded, twisted- pair, Teflon
interconnect cables of minimum length between the
calibrator and the multimeter. The cable shields should be
earth ground referenced. This configuration is recommended
to attain optimal noises and settling time performance
during calibration.
Calibration Procedures
Calibration Process
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