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Agilent Technologies

Agilent E8257D

Option HAR

User’s and Service Guide

Notices

No part of this manual may be reproduced

in any form or by any means (including

electronic storage and retrieval or transla-

tion into a foreign language) without prior

agreement and written consent from Agi-

lent Technologies, Inc. as governed by

United States and international copyright

laws.

Manual Part Number

E8251-90319

Edition

October 2007

Printed in USA

Agilent Technologies, Inc.

1601 California Street

Palo Alto, CA 94304 USA

Warranty

The material contained in this docu-

ment is provided “as is,” and is sub-

ject to being changed, without notice,

in future editions. Further, to the max-

imum extent permitted by applicable

law, Agilent 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 par-

ticular purpose. Agilent shall not be

liable for errors or for incidental or

consequential damages in connection

with the furnishing, use, or perfor-

mance of this document or of any

information contained herein. Should

Agilent 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 sep-

arate agreement shall control.

Technology Licenses

The hardware and/or software described in

this document are furnished under a

license and may be used or copied only in

accordance with the terms of such license.

Restricted Rights Legend

If software is for use in the performance of

a U.S. Government prime contract or sub-

contract, Software is delivered and

licensed as “Commercial computer soft-

ware” 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 Agilent Technologies’ standard

commercial license terms, and non-DOD

Departments and Agencies of the U.S. Gov-

ernment will receive no greater than

Restricted Rights as defined in FAR

52.227-19(c)(1-2) (June 1987). U.S. Govern-

ment 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.

Safety Notices

CAUTION

A CAUTION notice denotes a haz-

ard. It calls attention to an operat-

ing procedure, practice, or the like

that, if not correctly performed or

adhered to, could result in damage

to the product or loss of important

data. Do not proceed beyond a

CAUTION notice until the indicated

conditions are fully understood and

met.

WARNING

A WARNING notice denotes a

hazard. It calls attention to an

operating procedure, practice, or

the like that, if not correctly per-

formed or adhered to, could result

in personal injury or death. Do not

proceed beyond a WARNING

notice until the indicated condi-

tions are fully understood and met.

iii

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

Contents-1

E8257D Option HAR

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

Verifying the Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

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

Phase Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Maximum Level Output Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Typical Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Phase Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Amplitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Modulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Frequency Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Phase Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Amplitude Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Pulse Modulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

ALC Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Ramp Sweep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

E8257D Option HAR Using the E5500 Phase Noise Measurement Subsystem . . . . . . . . . 8

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Performance Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Setting up the E5500 Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

10 MHz Phase Noise Test Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

10 MHz Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Making the 10 MHz Measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

100 MHz Phase Noise Test Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

100 MHz Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Making the 100 MHz Measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Modifying Synthesizer Self Test Limits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Safety and Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Cleaning the Instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Connector Care and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Statement of Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Shipping Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Compliance with Canadian EMC Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Compliance with German FTZ Emissions Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Compliance with German Noise Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

General Safety Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Safety Earth Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Before Applying Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Electrostatic Discharge Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Instrument Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Contacting Agilent Sales and Service Offices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Contents-2

Contents

User’s and Service Guide 1

E8257D Option HAR

2User’s and Service Guide

E8257D Option HAR Description

Description

The E8257D Option HAR is a frequency divider designed to provide improved phase noise

in the 0.98 MHz to 500 MHz frequency range of the E8257D Signal Generator.

The Option HAR uses frequency division as a replacement for heterodyne mixing to create

frequencies in the 0.98 to 500 MHz range. This provides improved phase noise in this

mode. The mode will be referred to as “Divider Mode” throughout this document.

Verifying the Shipment

After the unit has been unpacked, keep the original packaging materials so it can be

used if you need to transport the instrument.

After the test set has been unpacked, keep the original packaging materials so they can be

used if you need to transport the instrument.Inspect the test set and all accessories for any

signs of damage that may have occurred during shipment. If your test set or any

accessories appear to be damaged or missing refer to “Contacting Agilent Sales and Service

Offices” on page 26.

Block Diagram

Figure 1 Block Diagram

/ 2N

Output Board

p/o Frac N board

0.25-3.2

GHz

ALC

/ 2NRamp Swp

Scan

1GHz from

Ref board

Divider assembly

/ 2N/ 2N

Opt 1EH

Filters

1 - 250 MHz

Digital Control

TC226

From ALC

board

ALC

P1 P2 P4

User’s and Service Guide 3

E8257D Option HAR Specifications

Specifications

The E8257D Option HAR provides improved absolute phase noise in the 0.98 to 500 MHz

frequency range. To achieve these improvements the Divider Mode must be turned On.

See “Operation” on page 8.

The E8257D Option HAR impacts standard instrument performance for frequencies

≤3.2 GHz. Standard operation for frequencies above 3.2 GHz has not been affected. If

Divider Mode is left on for frequencies outside of 0.98 to 500 MHz the “ALC Bandwidth”

will be limited to 100 Hz.

Phase Noise

Divider Mode On

Divider Mode Off

Standard performance per the E8257D data sheet.

Maximum Level Output Power

Divider Mode On

Typical performance see Table 4 and Table 5 on page 5.

Divider Mode Off

Table 1 E8257D Option HAR Specifications1(25 °C)

1. +16 dBm

Frequency 1 Hz 10 Hz 100 Hz 1 kHz 10 kHz 100 kHz

10 MHz −93 −120 −142 −152 −158 −158

100 MHz −73 −100 −122 −140 −145 −145

Table 2 Maximum Power Specification Impacts

Frequency Delta

250 kHz to 3.2 GHz −3 dB from Standard specification

> 3.2 GHz no change from standard specifications

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