Keysight Technologies 85059A, Operating And Service Manual

Page: 24 / 65

2-2 Keysight Technologies 85059A 1.0 mm Calibration and Verification Kit
Specifications
Temperature
–
What To
Watch Out For
Due to the small dimensions and tight tolerances of the calibration and
verification devices, electrical characteristics will change with temperature.
Therefore, the operating temperature is a critical factor in their performance.
During a measurement calibration, the temperature of the calibration devices
must be stable and within the range shown in
Table 2-1 on page 2-1 .
NOTE
Remember
your fingers are a heat source, so avoid handling the devices
unnecessarily during calibration.
Performance verification and measurements of devices-under-test (DUT’s)
do not need to be performed within the operating temperature range of the
calibration devices. However, the DUT’s must be within the error-corrected
temperature range of the network analyzer (
±
1
°
C of the measurement
calibration temperature). For example, if the calibration is performed at
+20
°
C, the error-corrected temperature range is +19
°
to +21
°
C. It is then
appropriate to perform measurements and performance verifications even
19
°
is outside the operating temperature range of the calibration
devices.