Keysight 478A Service-Handbuch

Keysight 478A Option H83

Thermistor Mount Manual

Modifications

Operating and

Service Manual

Use this manual with the following document:

Operating and Service Manual

Part Number 00478-90021

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Warranty Statement

THE MATERIAL CONTAINED IN THIS DOCUMENT IS PROVIDED “AS IS,” AND IS SUBJECT

TO BEING CHANGED, WITHOUT NOTICE, IN FUTURE EDITIONS. FURTHER, TO THE

MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, KEYSIGHT DISCLAIMS ALL

WARRANTIES, EITHER EXPRESS OR IMPLIED WITH REGARD TO THIS MANUAL AND

ANY INFORMATION CONTAINED HEREIN, INCLUDING BUT NOT LIMITED TO THE

IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

PURPOSE. KEYSIGHT SHALL NOT BE LIABLE FOR ERRORS OR FOR INCIDENTAL

OR CONSEQUENTIAL DAMAGES IN CONNECTION WITH THE FURNISHING, USE, OR

PERFORMANCE OF THIS DOCUMENT OR ANY INFORMATION CONTAINED HEREIN.

SHOULD KEYSIGHT AND THE USER HAVE A SEPARATE WRITTEN AGREEMENT WITH

WARRANTY TERMS COVERING THE MATERIAL IN THIS DOCUMENT THAT CONFLICT

WITH THESE TERMS, THE WARRANTY TERMS IN THE SEPARATE AGREEMENT WILL

CONTROL.

DFARS/Restricted Rights Notice

If software is for use in the performance of a U.S. Government prime contract or

subcontract, Software is delivered and licensed as “Commercial computer software” as

defined in DFAR 252.227-7014 (June 1995), or as a “commercial item” as defined in FAR

2.101(a) or as “Restricted computer software” as defined in FAR 52.227-19 (June 1987) or

any equivalent agency regulation or contract clause. Use, duplication or disclosure of

Software is subject to Keysight Technologies’ standard commercial license terms, and

non-DOD Departments and Agencies of the U.S. Government will receive no greater than

Restricted Rights as defined in FAR 52.227-19(c)(1-2) (June 1987). U.S. Government users

will receive no greater than Limited Rights as defined in FAR 52.227-14 (June 1987) or

DFAR 252.227-7015 (b)(2) (November 1995), as applicable in any technical data.

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Safety Notes

The following safety notes are used throughout this document. Familiarize yourself with

each of these notes and its meaning before performing any of the procedures in this

document.

WARNING

Warning denotes a hazard. It calls attention to a procedure

which, if not correctly performed or adhered to, could result in

injury or loss of life. Do not proceed beyond a warning note

until the indicated conditions are fully understood and met.

CAUTION

Caution denotes a hazard. It calls attention to a procedure that, if not

correctly performed or adhered to, could result in damage to or

destruction of the instrument. Do not proceed beyond a caution sign

until the indicated conditions are fully understood and met.

Definitions

•Specifications describe the performance of parameters covered by the product warranty

(temperature –0 to 55 °C, unless otherwise noted.)

•Typical describes additional product performance information that is not covered by the

product warranty. It is performance beyond specification that 80% of the units exhibit

with a 95% confidence level over the temperature range 20 to 30 °C. Typical

performance does not include measurement uncertainty.

•Nominal values indicate expected performance or describe product performance that is

useful in the application of the product, but is not covered by the product warranty.

•Characteristic Performance describes performance parameter that the product is

expected to meet before it leaves the factory, but is not verified in the field and is not

covered by the product warranty. A characteristic includes the same guard bands as a

specification.

Contents

Thermistor Mount Manual Modifications Contents-1

General Information

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Mount Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Zero Set. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Operating Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . 6

Maintenance .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Safety and Regulatory Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Connector Care and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Before Applying Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . 9

Shipping Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Compliance with Canadian EMC Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Compliance with German Noise Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Statement ofCompliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Cautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . 12

Instrument Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 13

Contacting Keysight .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . 14

Thermistor Mount Manual Modifications 1

General Information

2 Thermistor Mount Manual Modifications

478A Option H83General Information

Description

The 478A Option H83 is a standard 478A Coaxial Thermistor Mount modified to measure

microwave power from 1 µW to 10 mW over the frequency range of 1 MHz to 1 GHz. The

unit is then sent to the Keysight Standards Lab for calibration at the following

frequencies: 1, 3, 10, 30, 50, 100, 300 and 1000 MHz. The 478A Option H83 is tested to

have a VSWR ≤1.05 at the frequency of 50 MHz. The calibration is ISO compliant but

does not inlcude 17025 accredited cal. The calibration report will include Cal Factor and

RHO data with uncertainties.

The lower frequency is accomplished by the design of the RF input connector

(00478-62004) and thermistor assembly (00478-62005), which utilize a 0.1 µF cap for C1

and C2.

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