Keysight Technologies 85058E User's And Service Manual

Contents

1- 4 85058B/EGeneral InformationCalibration Kit Overview85058E Data-Based.ckt85058EP Polynomial.ckt❏ OSL❏ “Broadband” definition of broadband termination, open, and Short 185058B (Standard) Kit ContentsThe 85058B (Standard) calibration kit contains the following:• one pair (male and female) of an offset open• one pair (male and female) of a lowband load• four pairs (male and female) of offset shorts• three adapters• a 5/16 inch, 90 N–cm (8 in–lb) torque wrench for use on the 1.85 mm connectors• an open–end wrench for the 8mm flats on some of the components• two gage sets• a 10x magnifying glassRefer to Table 6-1 on page 6-3 and Figure 6-1 on page 6-5 for a complete list of kit contentsand their associated part numbers.Lowband LoadsThe best operating region of the load is from DC to 35 GHz. Performance degrades quicklyabove 35 GHz.Offset Opens and ShortsThe offset opens and shorts are built from parts that are machined to the currentstate-of-the-art in precision machining. The offset short’s inner conductors have a one-piececonstruction, common with the shorting plane. This construction provides for extremelyrepeatable connections. The offset opens have inner conductors that are supported by astrong, low-dielectric plastic to provide repeatability and reliability. Both the opens and shortsare constructed so that the pin depth can be controlled very tightly, thereby minimizing phaseerrors. The length of the offset opens is designed so that the difference in phase of theirreflection coefficients is approximately 180 degrees at all frequencies, with respect to offsetShort 1.Different combinations of offset shorts using three different lengths are used to calibratefrequency ranges from 35 to 50 GHz and from 50 to 67 GHz. The calibration coefficients forthese offset shorts are optimized for their applicable bandwidths.How to Identify Devices The shorts, opens, and loads in the kit are identified by the numberof rings (or bands) around the body of the device.• lowband loads have no rings or bands• 5.4 mm offset short has 1 ring or band and is identified as Short 1