HP HP 81531A User manual

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User's Guide
HP 8 153 1A Sensor Module
SERIAL NUMBERS
This manual applies to all instruments.
Fa
HEWLETT
PACKARD
HP Part No. 81531-90011
Printed in Germany
Second Edition
E0796
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Notices
This document contains proprietary
information that is protected by
copyright. All rights are reserved.
No part of this dorunlent may be
photocopied, reproduced. or
translated to another language
without the prior written consent of
Hewlett-Packard GmbH.
@ Copyright 1996by:
Hewlett-Fackard GmbH
Herrenberger Str. 130
71034 Boeblingen
Germany
Subject Matter
The information in this document is
subject to change without notice.
Warranty Exclusive Remedies
This Hewlett-Packard instrument The remedies provided herein are
product is warranted against defects Buyer's sole and exclusive remedies.
in material and workmanship for a Hewlett-Packard shall not be liable
period of one year from date of for any direct; indirect, special.
shipment. During t.he warranty incidental. or consequential
period, HP will, atits option, either damages whether based on contrart.
repair or replace products that prove tort. or any other legal theory.
to be defective. Assistance
For warranty service or repair, this
product must be returned to a service nlairltenance
facility designated by HP. Buyer shall
and Other customer assistance
prepay shipping charges to HP and agreements are available for
HP shall pay shipping ,-haws to
Hewlett-Packard products. For any
return the product to Buyer. assistance contact your nearest
However. Buyer shall pay all shipping Hewlett-Packard
and Service
charges, duties. and taxes for Office.
products returned to HP from
Hmlett-hcknrd nuke ?LO iLiarmntu another countw.
of anykir~d u~th regard to this
vrintd muterial. includina. but ~ot HP warrants that its software and
tu tlw implied unr&tim of firmware designated by HP for use
mercc, lc,, atability alu131fitlwssJm a
with an instrument will execute its
pa rcictrlnr purpose
programming instructions when
oro~erlvinstalled on that instrument.
...
Hewlett-Packard shall not be liable HP does not warrant that the
for errors contained herein or for operation of the instrument.
incidental or consequential damages software, or firmware will be
in connection with the furn~shing. uninterrupted or error free.
performance, or use of this material. Limitation of Warrantv
Printing History The foregoing warranty shall not
New editions are complete revisions apply to defects resulting from
of the guide reflecting alterations in improper or inadequate maintenance
the functionality of the instrument. by Buyer, Buyer-supplied software or
Updates are occasionally made to interfacing, unauthorized
the guide between editions. The modification or misuse, operation
date on the title page changes when outside of the environmental
an updated guide is published.
Tb specifications for the product, or
find out the current revision of the improper site preparation or
aide,or
to ourchase an uodated maintenance.
-
guide. contact your Hewlett-Fackard
representative. No other warranty is expressed or
impIied. Hewlett-Packard specifically
disclaims the implied warranties of
Merchantability and Fitness for a
Particular Purpose.
Control Serial Number: Edition 2 applies directIy to all instruments.
Edition 1
: 1st May 1990 : 81631-90011 : E0690
1st September 1000
: 81631-90011 : E0990
Edition 2
: 1st Septen~ber1991 : 81631-90011 : EM391
1st September 1892
: 81631-90011 : E0992
1st December 1994
: 81631-90011 : El294
1st July 1996: 81631-90011
: E0796
Certification
Hewlett-PackardCon~panycertifies
that this product met its published
specifications at the time of
shipment from the factory.
Hewlett-Packard further certifies
that its calibration measurements
are traceable to the Cnited States
National Institute of Standards and
'kchnology. NIST (forn~erlythe
United States National Bureau of
Standards. NBS) to the extent
allowed by the Institutes's
calibration facility, and
to the
calibration facilities of other
International Standards Organization
members.
IS0
9001 Certification
Produced to IS0 9001 international
quality system standard as part of
our objective of continually
increasmg customer satisfaction
through improved process control.
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Safety Considerations
Before operation, you should 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, you should keep it until you have checked the contents of the
shipment for completeness and verified the module both mechanically and
electrically.
The Performance Tests give procedures for checking the operation of the
module. If the contents are incomplete, mechanical damage or defect is
apparent, or
if a moduke does not pass the operator's checks, notify the nearest
Hewlett-Packard office.
Warning
To avoid hazardous electrical shock, do not perform
electrical tests when there are signs ofshipping damage to
any portion of the outer enclosure (covers, panels, etc.).
Power Requirements
The HP 81531A operates when installed into the HP 8153A Optical Multimeter
mainframe.
Operating Environment
The HP 8153A safety information summarizes the HP 81531A operating
environment ranges. In order for the HP
81531A to meet specifications, the
operating environment must be within the limits specified in this section.
InputIOutput Signals
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Caution
A maximum of 15V can be applied as an external voltage to any
II)
BNC connectors.
Storage and Shipment
The module can be stored or shipped at temperatures between -40°C and
+ 70°C. The module should be protected from temperature extremes that may
cause condensation within it.
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Contents
C . HP 81531A Specifications
...........
Supplementary Performance Characteristics C-3
.......................
Analog output: C-3
D . Performance Tests
..........................
Introduction D-1
.....................
Equipment Required D-1
..........................
Test Record D-2
..........................
Test Failure D-2
....................
Instrument Specification D-2
.......................
Performance Test D-3
.................
Accuracy and Linearity Test D-3
.........................
Test Setup D-3
......................
I . Accuracy Test D-4
.......................
I1 . Linearity Test D-5
........................
. I11 Noise Test D-8
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
....
How to clean instruments with a recessed lens interface E-7
.........................
Light dirt E-7
........................
Heavy dirt E-7
Index
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Figures
.............. D.1 . Accuracy and Linearity Test Setup
D-4
D.2 . Addition of results (example) .................
D-7
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HP 8 153 1A Specifications
Specifications describe the instrument's warranted performance. Supplementary
performance characteristics describe the instrument's non-warranted typical
performance.
Because of the modular nature of the instrument, these performance
specifications apply only to this module. You should insert these pages into the
appropriate section of the manual.
HP 81 53lA Specifications C-1
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HP 81531A Specifications
Sensor Element
1 In GaAs
Wavelength range
Power range
Display resolution
dBm, dB
Watt
-
Applicable fiber type
Uncertainty (Accuracy)
Total Uncertainty
0.001
0.0001 on printout
0.01 to 10
(depending on power range)
91125pm
- 100/140pm, NA50.3
h2.5
% (1000-l650nm)[lI
h5
% & 1.5oW (1000-l650nm)[']
Linearity
18" to 28OC const. temp
I peak-peak, avg. time lsec
Dimensions
175mm H, 32mm W, 336mm D (2.8"~1.3"x13.2")1
I Weight
Recalibration period
war mu^ time
net O.Gkg (1.31bs), shipping lkg (2.21bs)
2 years
20 min.
Information on the traceability of power meters is available on request
[I] at the following reference conditions:
w Power level 10pW (-BOdBm),Continuous Wave (CW).
w Fiber 50pm graded index, NA=0.2, fully excited.
w Ambient temperature 23OCh5K.
w Connector Diamond HMS-1OIHP.
w At day of calibration (add 0.3%for aging over one year, add 0.6% over
two years).
w Spectral width of source < 10nm.
[2] at the following operating conditions:
rn Fiber <50pm, NA 50.2.
w For NA >0.2 add 1 %.
C-2 HP 81 531 A Specifications
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rn Ambient temperature 0 to 5s0C,non-condensing.
rn Within 1year after calibration, add 0.3% for second year.
rn For Biconic Connector add +Z 1 % .
Supplementary Performance Characteristics
rn Add 1 % to total uncertainty for the full wavelength range.
Outside the specified wavelength range, the noise increases by up to
5 times
the value shown above.
Analog output:
Bandwidth: >DC, 5300 to 400Hz, depending on range and sensor module.
Output voltage: 0 to 2V into open.
Output impedance: 6000 typical.
Max. input voltage: +Z10V.
HP 81 53 1A Specifications
C-3
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Performance Tksts
Introduction
The procedures in this section test the performance of the instrument.
The complete specifications to which the HP 81531A is t,ested are given in
Appendix
C. All tests can be performed without access to the interior of the
instrument. The test equipment given corresponds to tests carried out with
Diamond
HMS- 1O/HP conectors.
Equipment Required
Equipment required for the performance test is listed in the table below. Any
equipment which satisfies the critical specifications of the equipment given in
the table, may be substituted for the recommended models.
lnstrument/Accessory Recommended Model Required Characteristics
Power Meter Standard HP 8153A Mainframe with Uncertainty
KO1 HP 81533A Optical Head
f 1.5%
Interface Module with
HP 81524A Optical Head
Multimeter Mainframe HP 8153A
CW Laser Sources HP 81552SM and HP 81553SM or Wavelength
HP 81554SM Uncertainty
f l.5nm
Optical Attenuator HP 8156 Option 101
ConnectorAdapter (head) HP 8lOOOAA
Connector Interface HP 81000AI 4ea (08154-61701)
Singlemode Fiber HP 81101AC 2ea
Plastic Cap 5040-9351 2ea
Performance Tests 0-1
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I
D *st Record
Results of the performance test may be tabulated on the Test Record provided
at the end of the test procedures. It is recommended that you fill out the Test
Record and refer to it while doing the test. Since the test limits and setup
information are printed on the Test Record for easy reference, the record can
also be used as an abbreviated test procedure (if you are already familiar with
the test procedures). The Test Record can also be used as a permanent record
and may be reproduced without written permission from Hewleti-Packard.
*st Failure
If the HP81531A fails any performance test, return the instrument to the
nearest Hewlett-Packard SalesIService Office for repair.
Instrument Specification
Specifications are the performance characteristics of the instrument which
are certified. These specifications, listed in Appendix C, are the performance
standards or limits against which the HP 81531A can be tested. Appendix C
also lists some supplemental characteristics of the HP 81531A. Supplemental
characteristics should be considered as additional information.
Any changes in the specifications due to manufacturing changes, design, or
traceability to the National Institute of Standards and Technology (NIST),will be
covered in a manual change supplement, or revised manual. Such specifications
supercede any that were previously published.
0-2 Performance Tests
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Performance Test
The performance test given in this section includes the Accuracy Test, the
Linearity Test, and the Noise Test. Perform each step in the order given, using
the corresponding test equipment.
Note
Make sure that all optical connections of the test setups given
in the procedure are dry and clean. DO NOT USE INDEX
MATCHING OIL.
The optical cables from the laser source to and from the HP
8156A Attenuator to the power meter must be fixed on the
table to ensure minimum cable movement during the tests.
Accuracy and Linearity Test
Specifications HP 81531A
Uncertainty : f :!.8%1 (1000-1650nm)
Linearity
: f 0.015dBf lpW
t includes aging.
Test Setup
1. Make sure that cable connector, detectors and adapters are clean.
2. Connect the equipment as shown in Figure D-1. Ensure that the cables to
and from the attenuator are fixed on the table and that both the optical head
and the DUT are close together so that minimum cable movement is required
when connecting the cable to the head or to the DUT.
Performance Tests D-3
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HP 8153A
Std. & Source Modules
El00000
000000
HP 815W Attenuator
with HP 81 WOAI
Connector
Interfaces
STD. HEAU
Figure D-1. Accuracy and Linearity Test Setup
3. Turn the instruments on, enable the laser source and allow the instruments
to warm up for at least 20 minutes.
Note
The linearity test must only be performed at either 1300nm or
3
155Onm. The accuracy test must be performed in the -20dBm
range at 10pW at both 1300nm and 1550nm.
I. Accuracy Test
1. On both power meters:
a. Set the calibration factor to zero.
b. Set the wavelength to the wavelength of the laser source.
c. Set the instruments into MEAS mode. Make sure AUTOranging is off and
select the -20dBm range.
d. Set the averaging time to 500ms.
2. Make sure that the HP 8156A output is disabled. ZERO the DUT.
3. Connect the HP 8156A output cable to the standard head and ZERO the
standard meter.
4. Enable the HP 8156A output. Change the HP 8156A attenuation until the
power meter standard displays 10.OOpW.
5. Connect the attenuator output cable to the DUT. Check the DUT display and
note the result in the test record.
6. Repeat steps 1 to 5 at the second wavelength with the corresponding source.
D-4 PerformanceTests
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11. Linearity Test
1. Make sure that the HP 8156A output is disabled. ZERO the DUT.
2. Enable the HP 8156A output.
3. On the DUT, switch off' autoranging and select the -20dBm range. Set the
display to show results in dBm.
4. Alter the attenuation until the DUT displays -17.4dBm.
5. Press
tDisp--Ref), then (dB).
6. Press to select the -1OdBm range.
7. Note the deviation, displayed in dB, as Rl on the test record.
a. In the -10dBm range. Set the display to show results in dBm.
b. Alter the attenuation until the DUT displays -7.4dBm.
c. Press (jj), then (dB).
d. Select the OdBm range.
e. Note the deviation, displayed in dB, as R2 on the test record.
8. Repeat the steps a to e at all the range and level settings shown in the test
record.
9. Calculate the non-linearity using the formulae in the test record.
Performance Tests D-5
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Example Results for the Linearity test
rest Description
Linearity Test
Range Power (dBm)
-20dBm -17.4
Disp--Ref
- 10dBm
- 10dBm -7.4 Disp-Ref
OdBm
-30dBm -37.4
Disp-Ref
-40dBm
-40dBm -47.4
Disp-Ref
-50dBm
Minimum
3pec. Result
dB
0.004 =R1
-0.008 =R2
-0.008
,= RR?
-0.004 =R4
0.02 =R5
Measurement
Uncertaintv
D-6 Performance Tests
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Test
No.
--
Example Calculated Results for the Linearity Test
Test Description
Non-Linearity
Range Formula
OdBm R1 +R2
- 1OdBm R 1
-20dBm
-30dBm R3
-40dBm R3
+ R4
-50dBm R3
+ R4 + R5
Minimum
Spec.
-0.015dB
-0.015dB
-0.015dB
-0.015dB
-0.015dB
Result Maximum Measurement
Spec. Uncertainty
t
Shown graphically, these results look as shown in the following figure:
4 RANGE +
OdBm -1QdBm
I I I I I I
Figure D-2. Addition of results (example)
Performancs Tests D-7
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