Keysight VXI Bus 75000 C Series, Руководство по обслуживанию

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38 Keysight E1463A 32-Channel Form C Switch Service Guide
Verification Tests Performance Test Record
Performance Test Record
Table 2-1 is a form you can copy and use to record performance verification test
results for the Switch Module. Information concerning test limits, measurement
uncertainty, and test accuracy ratio (TAR) is provided below.
Test Limits
Test limits are defined for Closed Channel Resistance Test and DC Isolation Test
using the specifications in Appendix A of the Keysight E1463A 32-Channel Form
C Switch Module User’s Manual. The specifications are single-sided, (i.e., there is
an upper limit or a lower limit, but not both). In the Performance Test Record, the
Minimum or Maximum column will be blank.
Measurement Uncertainty
For the performance verification tests in this manual, measurement uncertainties
are calculated based on the Keysight 3458A Digital Multimeter. The
measurement uncertainty shown in Table 2-1 is the accuracy of the Keysight
3458A using 90-day specifications. The calculations follow.
Closed Channel Resistance Test
Conditions:
– 4-wire ohms function, 10

range
– 90-day specifications
– Worst-case reading = 2.0

M.U. = (15 ppm of Reading + 5 ppm of Range)
= (15x10
-6
* 2.0x10
9
) + (5x10
-6
* 10)

= 8.0x10
-5

DC Isolation Test
Conditions:
– 2-wire ohms function, 1 G ? range
– 90-day specifications
– Worst-case reading = 1.2 G ? (highest resistance that can be measured
with the Keysight 3458A)
M.U. = (0.5% of R 10ppm of Range)
= (0.005 * 1.2x10
9
) + (10x10
-6
* 1x10
9
)

= 6.1x106
