HP HP 81551MM Manuale utente

Operating and Programming Manual

HP 81551MM Lightwave

Multimeter Source Module

SERIAL NUMBERS

This manual applies to all instruments.

ABCDE

HP Part No. 81551-90011

Printed in the Federal Republic of Germany

Second Edition

E1294

Control Serial Number: Edition 2 applies directly to all instruments.

Edition 1 : 1st May 1990 : 81551-90011 : E0590

Edition 2 : 1st November 1990 : 81551-90011 : E1190

1st August 1991 : 81551-90011 : E0891

1st December 1994 : 81551-90011 : E1294

Safety Considerations

Before operation, review the instrument and manual, including the red safety

page, for safety markings and instructions

.You must follow these to ensure safe

operation and to maintain the instrument in safe condition.

Initial Inspection

Inspect the shipping container for damage. If there is damage to the container

or cushioning, keep them until you have checked the contents of the shipment

for completeness and veried the instrument both mechanically and electrically.

The Performance Tests give procedures for checking the operation of the

instrument. If the contents are incomplete, mechanical damage or defect is

apparent, or if an instrument does not pass the operator's checks, notify the

nearest Hewlett-Packard oce.

Warning

To avoid hazardous electrical shock, do not perform

electrical tests when there are signs of shipping damage to

any portion of the outer enclosure (covers, panels, etc.).

Line Power Requirements

The HP 81551MM operates when installed into the HP 8153A Lightwave

Multimeter mainframe

Operating Environment

The HP 8153A safety information summarizes the HP 81551MM operating

environment ranges. In order for the HP 81551MM to meet specications, the

operating environment must be within the limits specied for the HP 8153A.

Storage and Shipment

The module can be stored or shipped at temperatures between



C and

+70



C. Protect the module from temperature extremes that may cause

condensation within it.

iii

Initial Safety Information for Laser Source Modules

The specications for these modules are as follows:

HP 81551MM

Laser Type

FP-Laser

InGaAsP

Laser Class

According to IEC 825-1 3A

(not USA)

(EN 60825-1 Europe)

According to 21 CFR 1040.10 1

(USA)

Output Power

-2dBm

Beam Diameter



Numerical Aperture

0.2

Wavelength

850

10nm

Sicherheitsinformation f 

ur Laser Quellen

Die Spezikationen f ur die Lasereinsch ube sind wie folgt:

HP 81551MM

Laser Typ

FP-Laser

InGaAsP

Laser Klasse

Entsprechend IEC 825-1 3A

(EN 60825-1 Europa)

Ausgangsleistung

-2dBm

Strahldurchmesser



Numerische Apertur

0.2

Wellenl 

ange

850

10nm

Informations et Consignes de S 

ecurit 

e Relatives 

a l'Utilisation

des Lasers.

Les Sp ecications des Modules Laser sont les Suivantes:

HP 81551MM

Type de Laser

FP-Laser

InGaAsP

Classe du Laser

Conforme au STD IEC 825-1 3A

(EN 60825-1 Europe)

Puissance de Sortie

-2dBm

Diam ^

etre du Faisceau



Ouverture Num 

erique

0.2

Longueur d'Onde

850

10nm

Contents

C. HP 81551MM Specications

Suppelementary Performance Characteristics .... .. .. .. C-2

Internal Digital Modulation . . . . . . . . . . . . . . . . . . C-2

Output Attenuation .. .. .. .. .. .. .. .. .. .. . C-2

Stability . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2

Spectral Bandwidth (FWHM) ................. C-2

D. HP 81551MM Performance Tests

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

Equipment Required . . . . . . . . . . . . . . . . . . . . . . D-1

Test Record .......................... D-2

Test Failure .......................... D-2

Instrument Specication .. .. .. .. .. .. .. .. .. .. D-2

Performance Tests . . . . . . . . . . . . . . . . . . . . . . . D-2

Output Power and Stability Tests .... .. .. . .. .. .. D-3

Output Power Test.... .. .. .. .. .. .. .. .. . D-3

Attenuation Function Test .... .. .. .. .. .. .. . D-4

Modulation Function Test .... .. .. .. .. .. .. . D-4

Stability Test ........................ D-4

E. Cleaning Procedures

The Cleaning Kit . . . . . . . . . . . . . . . . . . . . . . . . E-1

Other Cleaning Tools . . . . . . . . . . . . . . . . . . . . . E-3

Preserving Connectors . . . . . . . . . . . . . . . . . . . . . E-4

Cleaning Instrument Housings ................. E-4

Cleaning Procedures . . . . . . . . . . . . . . . . . . . . . . E-5

Cleaning Cable Connectors . . . . . . . . . . . . . . . . . . E-5

Cleaning Connector Adapters . . . . . . . . . . . . . . . . . E-6

Cleaning Connector Interfaces ................ E-6

Contents-1

Figures

D-1. Performance Test Setup ................... D-3

Tables

C-1. HP 81551MM Specications . . . . . . . . . . . . . . . . . . C-1

Contents-2

HP 81551MM Specications

Specications describe the instrument's warranted preformance. Supplementary

performance characteristics describe the instrument's non-warranted typical

performance.

Because of the modular nature of the instrument, these performance

specications apply only to this module.You should insert these pages into the

appropriate section of the manual.

Table C-1. HP 81551MM Specications

Laser Type

Fabry Perot Laser

Central Wavelength

850

10nm

Fiber type

multimode, 50/125



Spectral Bandwidth

1.5nm rms

Output Power

-2dBm

CW-Stability

Short Term (15min, T=constant)

0.01dB

Long Term (6h, T= 0



Cto55



1K)

0.06dB

Operating temperature



C to +55



Dimensions

75mm H, 32mm W, 335mm D (2.8

1.3

13.2

)

Weight

net 0.7kg (1.5lbs), shipping 1kg (2.2lbs)

Recalibration Period

1 year

Central Wavelength is shown on the display.

rms: root mean square.

Class 3A according to IEC 825-1 (1993), Class 1 according to FDA CFR 21 (1986)

After a warm-up time of 60 min. with output enabled. If previously stored at

the same temperature, 20 min. only.

HP 81551MM Specications C-1

Suppelementary Performance Characteristics

Internal Digital Modulation

You can select internal modulation frequencies of 270HZ, 1kHz, or 2kHz. All

outputs are pulse shaped, with a duty cycle of 50%.

Output Attenuation

The output can be attenuated from 0 to 6dB, in steps of 0.1dB.

Stability

The value of the long term CW-stability doubles with just one minute warmup

time (laser enabled).

Spectral Bandwidth (FWHM)

The spectral bandwidth is, typically, twice the specied RMS value.

C-2 HP 81551MM Specications

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