Agilent Technologies N5507A Guida all'applicazione

Agilent Technologies

Agilent N5507A

Microwave

Downconverter

Hardware Reference

First edition, June 2004

Notices

Nopart of thismanual maybereproduced

in anyform or by any means(including

electronic storage andretrieval or transla-

tion intoa foreign language) without prior

agreement andwrittenconsent fromAgi-

lentTechnologies,Inc. asgovernedby

UnitedStates and international copyright

laws.

Manual Part Number

N5507-90001

Edition

Firstedition, June2004

Printed in USA

Agilent Technologies, Inc.

1400 Fountaingrove Pkwy

Santa Rosa, CA 95403

Warranty

The material contained in this docu-

ment is provided “as is,” and is sub-

ject to beingchanged, without notice,

infuture editions. Further, to the max-

imum extent permitted by applicable

law, Agilent disclaims all warranties,

eitherexpress orimplied,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 inconnection

withthe furnishing, use, or perfor-

mance of this document orof any

information contained herein. Should

Agilent andthe user have aseparate

written agreement with warranty

terms coveringthe material in this

document that conflict with these

terms, the warranty terms in thesep-

arate agreement shall control.

Technology Licenses

Thehardwareand/orsoftwaredescribedin

this document arefurnishedundera

licenseandmay beusedor copied only in

accordancewith theterms of such license.

Restricted Rights Legend

If softwareis for usein the performance of

a U.S. Government primecontractor sub-

contract, Software is deliveredand

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

computersoftware” as definedin FAR

52.227-19 (June 1987) or any equivalent

agency regulationor contract clause. Use,

duplication ordisclosureof Softwareis

subject to Agilent Technologies’ standard

commercial licenseterms, and non-DOD

DepartmentsandAgenciesofthe U.S. Gov-

ernmentwill receive no greaterthan

RestrictedRights as defined in FAR

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

ment users will receiveno greaterthan

Limited Rightsas definedinFAR52.227-14

(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 callsattention to an operat-

ing procedure, practice, or the like

that, if notcorrectlyperformed or

adhered to, could result in damage

to the product or loss of important

data. Do not proceed beyond a

CAUTION notice untiltheindicated

conditionsare fullyunderstoodand

met.

WARNING

A WARNING notice denotesa

hazard. It calls attention to an

operating procedure, practice, or

the like that, if not correctly per-

formedor adhered to, couldresult

in personal injury or death. Do not

proceed beyond a WARNING

notice until the indicated condi-

tions are fullyunderstoodandmet.

Agilent N5507A Hardware Reference 3

Contents

1GeneralInformation

Overview 8

Figure 1. N5507A microwave downconverter 8

Front-PanelInterfaces 9

Figure 2. N5507A front panel 9

ACT (STATUS) 9

AM NOISE(OUTPUT) 9

ERR (STATUS) 10

IF (OUTPUT) 10

LSN (GPIB) 10

POWER 10

RF ANALYZER (OUTPUT) 11

RMT (GPIB) 11

SIGNAL (INPUT) 11

SRQ(GPIB) 12

TLK (GPIB) 12

mW LO (OUTPUT) 12

mW LO (OUTPUT) 13

VOLTAGE CONTROL (INPUT) 13

Rear-PanelInterfaces 14

Figure 3. N5507A rear panel 14

10MHzIN 14

10MHzOVENOUT 15

100 MHz OUT: -2 dBm 15

100 MHz OUT: +8 dBm 15

600 MHz OUT: 0 dBm 16

600 MHz OUT: +20 dBm 16

Buffered 10 MHz Out 16

GPIB 16

IF LEVEL 16

Power Connector(~ LINE) 17

MULTIPLEXER: OUT 17

SPECTRUM ANALYZER: IN 17

TUNE SPAN OUT 17

4Agilent N5507A Hardware Reference

2 Technical Data

Specifications 20

Table 1.Environmental andmechanicalspecifications 20

Table2.RFspecifications 20

Spectral Purity 21

Configuration 1: all oscillatorslocked 21

Table 3.Configuration1: all oscillatorslocked 21

Configuration 2: 100 and 600 MHz oscillators locked 22

Table 4.Configuration 2: 100 and 600 MHz oscillators locked 22

Configuration 3: 600 MHz free-running oscillator 23

Table5.Configuration3: 600 MHz free-running oscillator 23

RF input supplemental characteristics 24

Table6.RFinput supplementalcharacteristics 24

IF Output 25

Table7.IF output specifications 25

Mixingspurious signals 25

Table8.Mixing spurious 25

IF output supplemental characteristics 26

Table 9. IF output supplemental characteristics 26

Local Oscillator 27

Table 10. Local oscillator specifications 27

Table 11.Local oscillatorsupplemental characteristics 27

AM Noise Detection 28

Table 12. AM noisedetection specifications 28

Table 13.AM detector noise floorspecifications(+15 dBm) 28

Power Requirements 29

Table 14. N5507A power supply requirements 29

Power line module 29

Fuse 29

3MicrowaveSource

General Specifications 32

Table 15.Environmental andmechanical specifications 32

RFOutput 33

Table16.RFoutputspecifications 33

Spectral Purity 33

Configuration 1: all oscillatorslocked 34

Table 17.Source configuration 1: all oscillatorslocked 34

Configuration 2: 100 and 600 MHz oscillators locked 35

Agilent N5507A Hardware Reference 5

Table 18. Source configuration 2: 100 and 600 MHz oscillators locked 35

Configuration 3: 600 MHz free-running oscillator 36

Table 19.Source configuration 3: 600 MHz free-running oscillator 36

AM Noise 37

Table 20.AM detector noise floorspecifications(+10 dBm) 37

Table 21. AM noise supplemental characteristics 37

Maximum output power 38

Figure 4.AM noise maximum output power 38

Output supplementalcharacteristics 38

Figure 5. 10 MHz output typical performance 38

Figure 6. 100 MHz output typical performance 39

Figure 7. 600 MHz output typical performance 39

4 Preventive Maintenance

Using, Inspecting,and CleaningRF Connectors 42

Repeatability 42

RF cable andconnectorcare 42

Proper connector torque 43

Table22.Properconnectortorque 43

Connector wear and damage 43

SMAconnectorprecautions 44

Cleaning procedure 44

Table 23.CleaningSuppliesAvailable from Agilent 45

General ProceduresandTechniques 46

Figure 8. GPIB, 3.5 mm, Type-N, power sensor, and BNC connectors 46

Connector removal 47

Instrument Removal 49

Half-Rack-Width instrument 49

Figure9.Instrument lock links, front and rear 50

Benchtop instrument 50

Instrument Installation 51

Half-Rack-Width instrument 51

Benchtop instrument 52

6Agilent N5507A Hardware Reference

N5507A Microwave Downconverter

Hardware Reference

Agilent Technologies

General Information

Overview 8

Front-PanelInterfaces 9

Rear-PanelInterfaces 14

8Agilent N5507A Hardware Reference

1General Information

Overview

The Agilent N5507A microwave downconverter is part of the Agilent E5505A

Phase Noise Measurement System It is a half-rack-width System II unit The

N5507A downconverter translates microwave signals to RF frequencies with

minimal phase and AM noise contribution State-of-the-art phase noise

performance gives the user t he capability to lower the microwave noise floor of

the phase noise measurement system

The N5507A accepts signals between 5 MHz and 26 5 GHz at levels from –30

dBm to +30 dBm Signals above 1 5 GHz are mixed with an internal low-noise

oscillator (LO), which tunes by 600 MHz steps, resulting in an intermediate

frequency (IF) between 300 and 900 MHz The input signal goes from the

SIGNAL connector to a 0 to 35 dB step attenuator (5 dB steps) before being

mixed with the LO An adjustable IF amplifier follows the mixer The gain

range of the IF amplifier is –10 to 45 dB in 5 dB steps Input signals below

1 5 GHz, go through the input attenuator and to the IF amplifier, bypassing the

mixer

The N5507A can also serve as a source in the E5505A system It includes the

functionality of the Agilent N5508A microwave source As a source, the unit

can be tuned to a specific frequency and power (When the unit serves as a

downconverter, the internal source hardware functions as an LO ) Chapter 3

contains specifications for the N5507A as a source For instructions on using it

as a source, refer to the E5505A Phase Noise Measurement System User’s

Guide

Figure 1 N5507A microwave downconverter

General Information 1

Agilent N5507A Hardware Reference 9

Front-Panel Interfaces

This section describes the function of the front-panel interfaces on the

N5507A downconverter Figure 2 shows the front panel The interface

descriptions appear in alphabetical order

ACT (STATUS)

This LED is not used for phase noise measurement

AM NOISE (OUTPUT)

The signal at this connector is the output of the downconverter’s RF AM

detector or the IF AM detector The downconverter has an AM noise mode that

routes the input signal to an input attenuator and then to an RF AM detector

The detected output is routed to the AM NOISE connector

Figure 2 N5507A front panel

n5507a_front_pnl

27 Apr 04 rev 1

+23 dBm

OUTPUT POWER

PO IBLE

+30 dBm

OUTPUT POWER

PO IBLE

AM NOI E

OUTPUT

RF ANALYZER

2.4 - 25.8 GHz

W LOIF

5 -1500 MHz10 VOLT MAX

CONTROL

VOLTAGE

5 MHz - 26.5 GHz

IGNAL

INPUT

RMT L N TLK RQ ERRACT

TATUGPIB

ATTENUATOR

+30 dBm MAX WITH

+10 dBm + ATTEN

MAXIMUM POWER

0 VDC MAX

IGNAL INPUT

POWER

N5507A 5 MHz -26.5 GHz

Microwave Downconverter

NOTE Some interfaces onthe front and rear panelsare not used for phase noise measurement,as

their descriptions indicate.Their primary function is forfactory testing andtroubleshooting.

10 Agilent N5507A Hardware Reference

1General Information

Characteristics (RF AM detector only)

•Output impedance: ~500 Ω, but designed to drive a 50 Ω load

•Output bandwidth: 1 Hz to 40 MHz into a 50 Ω load

ERR (STATUS)

The error message LED illuminates when a communication error occurs and

indicates that an error message is available

IF (OUTPUT)

The signal at this connector is the downconverter’s output

Limits

•Nominal output level: 0 to +5 dBm (input signal ≥ –30 dBm)

•Maximum output level: +15 dBm

•Frequency (RF input 5 to 1500 MHz): 5 to 1500 MHz

•Frequency (RF input 5 to 26 5 GHz): 300 to 900 MHz

Characteristics

•Output impedance: 50 Ω

LSN (GPIB)

The listen LED illuminates when the system addresses the instrument to

listen

POWER

This switch puts the instrument in active operation or standby mode It is a

standby switch and not a LINE switch The detachable power cord is the

instrument’s disconnecting device It disconnects the mains circuits from the

mains supply before other parts of the instrument or system

NOTE The IF amplifiersfrequencyresponse startsrolling off above1200 MHz.Avoid usingIF

frequency between 1200 and 1500 MHz.

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