Agilent Technologies 85052D, Руководство пользователя и сервисное руководство, Страница: 8 / 62

1-2 85052D
General Information
Calibration Kit Overview
Calibration Kit Overview
The Agilent 85052D 3.5 mm calibration kit is used to calibrate Agilent network analyzers
up to 26.5 GHz for measurements of components with 3.5-mm connectors.
Kit Contents
The 85052D calibration kit includes the following items:
• user’s and service guide
• offset opens and shorts, and broadband loads
• three 3.5 mm adapters
• 5/16 in, 90 N-cm (8 in-lb) torque wrench
• 7 mm open-end wrench
• data disks that contain the calibration constants of the devices in the calibration kit.
NOTE
A backup copy of each data disk and printout should be made immediately
upon receipt of the calibration kit. Refer to your analyzer user’s guide for
instructions on duplicating a disk.
For measurement convenience, the kit also contains three 3.5 mm adapters. The adapters
are primarily intended for use in measuring non-insertable devices, but can also be used as
a connector saver.
Refer to Chapter 6 , “Replaceable Parts.” for a complete list of kit contents and their
associated part numbers.
Broadband Loads
The broadband loads are metrology-grade terminations that have been optimized for
performance up to 26.5 GHz. The rugged internal structure provides for highly repeatable
connections. A distributed resistive element on sapphire provides excellent stability and
return loss.
Offset Opens and Shorts
The offset opens and shorts are built from parts that are machined to the current
state-of-the-art in precision machining.
The offset short’s inner conductors have a one-piece construction, common with the
shorting plane. The construction provides for extremely repeatable connections.
The offset opens have inner conductors that are supported by a strong, low-dielectric
constant plastic to minimize compensation values.
Both the opens and shorts are constructed so that the pin depth can be controlled very
tightly, thereby minimizing phase errors. The lengths of the offsets in the opens and shorts
are designed so that the difference in phase of their reflection coefficients is approximately
180 degrees at all frequencies.