Agilent 83400 Series Manual
Agilent 83400-Series
Lightwave Source and
Receiver Modules
User’s Guide
© Copyright 2000
Agilent Technologies
All Rights Reserved. Reproduction, adaptation, or translation without prior written
permission is prohibited,
except as allowed under copyright laws.
Agilent Part No. 5962-5933
Printed in USA
February 2000
Agilent Technologies
Lightwave Division
1400 Fountaingrove Parkway
Santa Rosa, CA 95403-1799,
USA
(707) 577-1400
Notice.
The information contained in
this document is subject to
change without notice. Companies, names, and data used
in examples herein are fictitious unless otherwise noted.
Agilent Technologies makes
no warranty of any kind with
regard to this material, including but not limited to, the
implied warranties of merchantability and fitness for a
particular purpose. Agilent
Technologies shall not be liable for errors contained herein
or for incidental or consequential damages in connection with the furnishing,
performance, or use of this
material.
Restricted Rights Legend.
Use, duplication, or disclosure by the U.S. Government
is subject to restrictions as set
forth in subparagraph (c) (1)
(ii) of the Rights in Technical
Data and Computer Software
clause at DFARS 252.227-7013
for DOD agencies, and subparagraphs (c) (1) and (c) (2)
of the Commercial Computer
Software Restricted Rights
clause at FAR 52.227-19 for
other agencies.
Warranty.
This Agilent Technologies
instrument product is warranted against defects in
material and workmanship for
a period of one year from date
of shipment. During the warranty period, Agilent Technologies will, at its option, either
repair or replace products
which prove to be defective.
For warranty service or repair,
this product must be returned
to a service facility designated by Agilent Technologies. Buyer shall prepay
shipping charges to Agilent
Technologies and Agilent
Technologies shall pay shipping charges to return the
product to Buyer. However,
Buyer shall pay all shipping
charges, duties, and taxes for
products returned to Agilent
Technologies from another
country.
Agilent Technologies warrants that its software and
firmware designated by Agilent Technologies for use with
an instrument will execute its
programming instructions
when properly installed on
that instrument. Agilent Technologies does not warrant that
the operation of the instrument, or software, or firmware
will be uninterrupted or errorfree.
Limitation of Warranty.
The foregoing warranty shall
not apply to defects resulting
from improper or inadequate
maintenance by Buyer, Buyersupplied software or interfacing, unauthorized modification or misuse, operation
outside of the environmental
specifications for the product,
or improper site preparation
or maintenance.
No other warranty is
expressed or implied. Agilent
Technologies specifically disclaims the implied warranties
of merchantability and fitness
for a particular purpose.
Exclusive Remedies.
The remedies provided herein
are buyer's sole and exclusive
remedies. Agilent Technolo-
ii
❍ The OFF symbols
are used to mark the
positions of the instrument power line
switch.
gies shall not be liable for any
direct, indirect, special, incidental, or consequential damages, whether based on
contract, tort, or any other
legal theory.
The CE mark is a registered trademark of
the European Community.
Safety Symbols.
CAUTION
The caution sign denotes a
hazard. It calls attention to a
procedure which, if not correctly performed or adhered
to, could result in damage to
or destruction of the product.
Do not proceed beyond a caution sign until the indicated
conditions are fully understood and met.
The CSA mark is a registered trademark of
the Canadian Standards Association.
The C-Tick mark is a
registered trademark
of the Australian Spectrum Management
Agency.
WARNING
The warning sign 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 sign until
the indicated conditions are
fully understood and met.
The instruction manual symbol. The product is marked with this
warning symbol when
it is necessary for the
user to refer to the
instructions in the
manual.
The laser radiation
symbol. This warning
symbol is marked on
products which have a
laser output.
The AC symbol is used
to indicate the
required nature of the
line module input
power.
| The ON symbols are
used to mark the positions of the instrument
power line switch.
ISM1-A
This text denotes the
instrument is an
Industrial Scientific
and Medical Group 1
Class A product.
Typographical Conventions.
The following conventions are
used in this book:
Key type for keys or text
located on the keyboard or
instrument.
Softkey type for key names that
are displayed on the instrument’s screen.
Display type for words or
characters displayed on the
computer’s screen or instrument’s display.
User type for words or charac-
ters that you type or enter.
Emphasis type for words or
characters that emphasize
some point or that are used as
place holders for text that you
type.
The Agilent 83400-Series—At a Glance
The Agilent 83400-Series—At a Glance
Agilent 83400-series sources
The Agilent 83400-series sources can be amplitude modulated by an external
RF source. They can be modulated with up to +14 dBm (about 25 mW) of RF
power.
Source
Wavelength
Unmodulated
Output Power
Modulation
Range
Optical
Fiber
Laser
Type
83402C
1300 nm
< 3.0 mW
300 kHz to 6 GHz
9/125 µm
DFB
83403C
1550 nm
< 3.0 mW
300 kHz to 6 GHz
9/125 µm
DFB
WARNING
Use of controls or adjustments or performance of procedures other
than those specified herein can result in hazardous radiation
exposure.
WARNING
Do not enable the laser when no fiber or equivalent device is attached
to the OPTICAL OUTPUT connector.
Agilent 83400-series receivers
The receivers are used to demodulate lightwave signals. With no modulation
signal, lightwave receivers produce no electrical output. If the optical power
exceeds 3 mW, the front-panel OVER ILLUMINATION indicator lights. Power must
be decreased below 2.5 mW for the indicator to turn off.
Receiver
Wavelength
Demodulation Range
(sine wave)
Optical Fiber
83410C
1300/1550 nm
300 kHz to 3 GHz
62.5/125 µm
83411C/D
1300/1550 nm
300 kHz to 6 GHz
9/125 µm
83412B
850 nm
300 kHz to 3 GHz
62.5/125 µm
iii
Laser Classification
Laser Classification
The Agilent 83402C is classified as an FDA Laser Class IIIb (IEC Laser
Class 3B). The total power of light energy radiated out of the OPTICAL OUTPUT
connector is no greater than 5 mW at a wavelength of 1300 nm. The following
figure shows the IEC and FDA labels (and their placement) on the
Agilent 83402C.
The Agilent 83403C is classified as an FDA LASER Class I (IEC LASER Class
1). The total power of light energy radiated out of the OPTICAL OUTPUT connector is no greater than 5 mW at a wavelength of 1550 nm.
No adjustments or maintenance are required to keep these products compliant with their classification. The IEC labels shown in the figure could not be
affixed at the factory. Instructions on page 1-5 explain how they are to be
attached.
WARNING
Do NOT, under any circumstances, look into the optical output or any
fiber/device attached to the output while the laser is in operation.
WARNING
Do not enable the laser when no fiber or equivalent device is attached
to the OPTICAL OUTPUT connector.
These products cannot be serviced. If service is required, return the instrument to Agilent Technologies.
iv
Laser Classification
IEC and FDA labels (and their placement) on an Agilent 83402C
v
General Safety Considerations
General Safety Considerations
This product has been designed and tested in accordance with IEC Publication 61010-1, Safety Requirements for Electrical Equipment for Measurement,
Control, and Laboratory Use, and has been supplied in a safe condition. The
instruction documentation contains information and warnings that must be
followed by the user to ensure safe operation and to maintain the product in a
safe condition.
WARNING
If this instrument is not used as specified, the protection provided by
the equipment could be impaired. This instrument must be used in a
normal condition (in which all means for protection are intact) only.
WARNING
To prevent electrical shock, disconnect the Agilent 83400-Series from
mains before cleaning. Use a dry cloth or one slightly dampened with
water to clean the external case parts. Do not attempt to clean
internally.
WARNING
This is a Safety Class 1 product (provided with a protective earthing
ground incorporated in the power cord). The mains plug shall only be
inserted in a socket outlet provided with a protective earth contact.
Any interruption of the protective conductor inside or outside of the
product is likely to make the product dangerous. Intentional
interruption is prohibited.
WARNING
No operator serviceable parts inside. Refer servicing to qualified
personnel. To prevent electrical shock, do not remove covers.
WARNING
For continued protection against fire hazard, replace line fuse only
with same type and ratings, (type T 0.315A/250V for 100/120V
operation and 0.16A/250V for 220/240V operation). The use of other
fuses or materials is prohibited. Verify that the value of the linevoltage fuse is correct.
• For 100/120V operation, use an IEC 127 5×20 mm, 0.315 A, 250 V, Agilent
part number 2110-0449.
• For 220/240V operation, use an IEC 127 5×20 mm, 0.16 A, 250 V, Agilent
Technologies part number 2110-0448.
vi
General Safety Considerations
CAUTION
Before switching on this instrument, make sure that the line voltage selector
switch is set to the line voltage of the power supply and the correct fuse is
installed. Assure the supply voltage is in the specified range.
CAUTION
This product is designed for use in Installation Category II and Pollution
Degree 2 per IEC 1010 and 664 respectively.
CAUTION
VENTILATION REQUIREMENTS: When installing the product in a cabinet, the
convection into and out of the product must not be restricted. The ambient
temperature (outside the cabinet) must be less than the maximum operating
temperature of the product by 4°C for every 100 watts dissipated in the
cabinet. If the total power dissipated in the cabinet is greater than 800 watts,
then forced convection must be used.
CAUTION
Always use the three-prong ac power cord supplied with this instrument.
Failure to ensure adequate earth grounding by not using this cord may cause
instrument damage.
CAUTION
Do not connect ac power until you have verified the line voltage is correct.
Damage to the equipment could result.
CAUTION
This instrument has autoranging line voltage input. Be sure the supply voltage
is within the specified range.
vii
Contents
The Agilent 83400-Series—At a Glance iii
Laser Classification iv
1 Getting Started
Inspecting the Shipment 1-4
Connecting a Source 1-5
Connecting a Receiver 1-8
Entering Calibration Data into an Agilent 8702D 1-9
Entering Calibration Data into an Agilent 8702A/B 1-11
2 General Information
Operating 2-2
Replaceable Parts 2-5
Front-Panel Optical Adapters 2-6
Calibration Data Information 2-7
Cleaning Connections for Accurate Measurements 2-11
Theory of Operation 2-21
Returning the Instrument for Service 2-25
Agilent Technologies Service Offices 2-28
3 Specifications and Regulatory Information
Specifications for Sources 3-3
Specifications for Receivers 3-7
Operating Specifications for Sources and Receivers 3-13
Regulatory Information 3-14
4 Performance Tests
Tests for Sources 4-4
Tests for Receivers 4-7
Contents-1
1
Inspecting the Shipment 1-4
Connecting a Source 1-5
If you encounter a problem 1-7
Connecting a Receiver 1-8
Entering Calibration Data into an Agilent 8702D 1-9
To copy the data from the disk 1-10
To manually enter data from the label 1-10
Entering Calibration Data into an Agilent 8702A/B 1-11
To install from the front panel 1-11
To install from an external disk drive 1-12
Getting Started
Getting Started
Getting Started
Getting Started
The instructions in this chapter show you how to install your Agilent 83400series source or receiver module. Because these products are key accessories
for the Agilent 8702-series lightwave component analyzers, this book emphasizes installation into the Agilent 8702D.
Calibration data describes each device
Four procedures are provided in this chapter for loading source or receiver
calibration data into an Agilent 8702-series lightwave component analyzer.
Select the appropriate procedure depending upon your situation.
Each source and receiver module comes with its own calibration data that
describes its magnitude and phase modulation response. Because no two
sources or receivers are exactly alike, the calibration data should not be used
with any other source or receiver. The calibration data is provided in three
forms:
• Coefficients printed on a label.
• Data on a DOS-formatted disk.
• Data on a LIF-formatted disk.
For more information about the calibration data, refer to “Calibration Data Information” on page 2-7.
Some notes on safety and care
Be sure to read the safety and introductory material in the front of this book
before operating your Agilent 83400-series source or receiver module. Refer
to Chapter 3, “Specifications and Regulatory Information” for information on
operating conditions, such as temperature.
If you should ever need to clean the cabinet, use a damp cloth only.
1-2
Getting Started
Getting Started
CAUTION
Exposing the Agilent 83400-series source or receiver module to temperatures
above 55°C may cause the optical fiber in the front-panel connector to shrink
and retract.
CAUTION
This product is designed for use in INSTALLATION CATEGORY II and
POLLUTION DEGREE 2, per IEC 601010 and 60664 respectively.
Measurement accuracy—it’s up to you!
Fiber-optic connectors are easily damaged when connected to dirty or damaged cables
and accessories. The Agilent 83400-series’ front-panel optical connector is no exception. When you use improper cleaning and handling techniques, you risk expensive
instrument repairs, damaged cables, and compromised measurements.
Before you connect any fiber-optic cable to the Agilent 83400-series source or receiver
module, refer to “Cleaning Connections for Accurate Measurements” on page 2-11.
1-3
Getting Started
Inspecting the Shipment
Inspecting the Shipment
1 Verify that all components ordered have arrived by comparing the shipping
forms to the original purchase order. Inspect all shipping containers.
If your shipment is damaged or incomplete, save the packing materials and
notify both the shipping carrier and the nearest Agilent Technologies sales and
service office. Agilent Technologies will arrange for repair or replacement of
damaged or incomplete shipments without waiting for a settlement from the
transportation company. Notify the Agilent Technologies customer engineer of
any problems.
2 Make sure that the serial number and options listed on the instrument’s rearpanel label match the serial number and options listed on the shipping
document. The following figure is an example of the rear-panel serial number
label.
Figure 1-1. Serial number label
1-4
Getting Started
Connecting a Source
Connecting a Source
1 For Agilent 83402C products, perform the following two steps:
a If you are located outside of the United States or Canada, locate the yellow
sheet of IEC laser classification and laser safety labels supplied with the
source. Labels are provided for most major languages.
b Select the two labels in the desired language, and place them on the source
at the two positions shown in Figure 1-2 on page 1-6. FDA labels should already be located at these positions.
WARNING
Do NOT, under any circumstances, look into the optical output or any
fiber/device attached to the output while the laser is in operation.
2 Connect a terminated fiber-optic cable or device to the source’s OPTICAL OUTPUT
connector. This protects the user from exposure to laser radiation. See
Figure 1-3 on page 1-7.
3 Connect the DC cable, supplied with the source, between the source’s rearpanel DC IN connector and a PROBE POWER jack.
You’ll find PROBE POWER jacks on the following products:
• Agilent 8702A/B/D lightwave component analyzer
• Agilent 11899A probe power supply
4 Make sure that the BNC short is connect to the rear-panel REMOTE SHUTDOWN
connector.
The source will not operate without the BNC short connected.
5 Insert the key into the source’s front panel.
6 Turn the key to turn the source on.
1-5
Getting Started
Connecting a Source
Figure 1-2. Location of laser safety labels
1-6
Getting Started
Connecting a Source
Figure 1-3. Source connections
If you encounter a problem
If the TEMP LED comes on, or the LASER ON LED goes off, one or more of the following conditions may have occurred:
• The key switch is in the OFF position (O).
• The ambient temperature is out of the specified range (25°C ±5°C).
• The remote shutdown is open.
• The power supply voltage(s) are out of spec (–12.6 V ±5% and +15 V ±5%).
• There is an internal malfunction of the unit; contact Agilent Technologies for
assistance.
These products cannot be serviced. If service is required, return the instrument to Agilent Technologies.
1-7
Getting Started
Connecting a Receiver
Connecting a Receiver
1 Connect the DC cable, supplied with the receiver, between the receiver’s rearpanel DC IN connector and a PROBE POWER jack.
You’ll find PROBE POWER jacks on the following products:
• Agilent 8702A/B/D lightwave component analyzer
• Agilent 11899A probe power supply
2 Locate the SMA RF cable supplied with the receiver.
3 Use adapters to connect the SMA RF cable between the Agilent 8702’s RF port
and the receiver’s rear-panel RF OUT connector.
4 Connect a fiber-optic cable or device to the receiver’s OPTICAL INPUT connector.
1-8
Getting Started
Entering Calibration Data into an Agilent 8702D
Entering Calibration Data into an Agilent 8702D
Agilent 83400-series lightwave sources and receivers have calibration data
which must be entered into the Agilent 8702. The data is supplied on a disk
and printed on a label. The most accurate data is contained on the disk. The
calibration data for newer lightwave sources and receivers is supplied on a
DOS formatted disk which can be read using the front-panel disk drive. On
older sources and receivers, the disk uses the LIF format.
Calibration standards come in the following forms:
• Already loaded in the Agilent 8702’s memory.
For optical transmission measurements, a thru connection (short length of
fiber-optic cable) is used. For reflection measurements, a Fresnel reflection
(3.5% reflected power) is used. This is a clean connector on the output of a
lightwave coupler. For electrical measurements, standard devices include
short circuit, open circuit, termination (for example, 50Ω load), and thru
connection. Electrical standards are packaged together as calibration kits.
• Provided with the device and must be loaded into the Agilent 8702’s memory.
For example, the Agilent 83400-series lightwave sources and receivers are
shipped with calibration data stored on a disk. This disk must be placed into
the instrument’s front-panel disk drive so that the data can be loaded into
memory.
• Calibration standards that you create for your own devices.
Loading calibration data into an Agilent 8702D
Before using your source or receiver with an Agilent 8702D lightwave component analyzer, you must load the calibration data as described in this section.
Two simple procedures are provided in this section. Although both are easy to
perform, copying from a disk is slightly faster. The data on the disk provides
the most accurate model of the frequency response of the calibration standard. As an alternative, entering the coefficients that are printed on the label
(located on the source or receiver) provides lower accuracy.
For steps on entering calibration data into an Agilent 8702A/B, refer to
“Entering Calibration Data into an Agilent 8702A/B” on page 1-11.
1-9
Getting Started
Entering Calibration Data into an Agilent 8702D
To copy the data from the disk
The following procedure is written specifically for entering source data. If you
are entering data for a receiver, simply substitute the word RECEIVER for SOURCE
and the word RCVR for SRC.
1 Locate the DOS-formatted calibration disk provided with the source.
2 Place the disk in the Agilent 8702D’s front-panel disk drive.
3 Press CAL, CAL KITS & STDS, SOURCE STANDARDS, LOAD SRC DISK MENU. This will
display the disk directory screen.
4 Use the arrow keys or front panel knob to select a cal data file.
5 Load the cal data file into either of two internal registers by pressing the
corresponding LOAD softkey.
To manually enter data from the label
The following procedure is written specifically for entering source data. If you
are entering data for a receiver, simply substitute the word RECEIVER for SOURCE
and the word RCVR for SRC.
1 Press CAL, CAL KITS & STDS, SOURCE, CAL STD:SRC COEFF and then ENTER SRC COEFF.
2 Press each softkey corresponding to the nine coefficients (A through I), using
the MORE softkey, and enter the coefficients. The coefficients are listed on a
label that is on the source. After all of the coefficients are entered, press
RETURN.
3 Press LABEL STD.
4 Use the front-panel knob and the SELECT LETTER softkey to write a title for the
calibration data.
5 Press STD DONE (DEFINED) and then SAVE SRC COEFF.
6 Press CAL, CALIBRATE MENU, RESPONSE, and then SOURCE.
7 When the SOURCE softkey is underlined, press DONE: RESPONSE.
1-10
Getting Started
Entering Calibration Data into an Agilent 8702A/B
Entering Calibration Data into an Agilent 8702A/B
Before using your source or receiver with an Agilent 8702A/B lightwave component analyzer, you must load the calibration data as described in this section. Two procedures are provided in this section. The first procedure is the
standard method. You will most likely use it. However, if you have an GPIB
external disk drive, you can use the second procedure. For more information
on calibration data, refer to “Entering Calibration Data into an Agilent 8702D”
on page 1-9.
To install from the front panel
The following procedure is written specifically for entering source data. If you
are entering data for a receiver, simply substitute the word RECEIVER for SOURCE
and the word RCVR for SRC.
1 On the Agilent 8702A/B, press:
PRESET
CAL, CAL KITS & STDS, SOURCE [COEFF], SRC COEFF, ENTER SRC COEFF
2 Use the available softkeys to enter the coefficients that are listed on the label
that is attached to the source.
3 Press LABEL STD, and enter a label for the calibration data.
4 Press STD DONE and then SAVE SRC COEFF.
1-11
Getting Started
Entering Calibration Data into an Agilent 8702A/B
To install from an external disk drive
If you have an HP 9122-series dual-sided disk drive connected to your
Agilent 8702A/B, use this procedure to enter the source or receiver’s calibration data.
The following procedure is written specifically for entering source data. If you
are entering data for a receiver, simply substitute the word RECEIVER for SOURCE
and the word RCVR for SRC.
1 Locate the LIF-formatted calibration disk provided with the source.
2 Place the disk in the disk drive.
3 On the Agilent 8702A/B, press:
PRESET
LOCAL, SYSTEM CONTROLLER
CAL, CAL KITS & STDS, SOURCE [COEFF], CAL STD: SRC DISK
LOAD SRC DISK, READ FILE TITLES, LOAD <filename>.
1-12
2
Operating 2-2
Replaceable Parts 2-5
Calibration Data Information 2-7
Cleaning Connections for Accurate Measurements
Theory of Operation 2-21
Returning the Instrument for Service 2-25
Agilent Technologies Service Offices 2-28
General Information
2-11
General Information
Operating
Operating
Laser sources
Front and rear panel features
The DC POWER ON light turns on whenever DC power is supplied.
The front-panel OPTICAL OUTPUT connector has a special adapter which allows
you to easily change the front-panel connector to one of many standard interfaces. Refer to “Replaceable Parts” on page 2-5 for a figure which shows each
available connector.
The front-panel RF IN connector is an SMA threaded female connector for
input of the modulation signal. The source can be modulated with a signal
which is DC offset, providing this offset does not exceed 20 volts DC.
If the environmental temperature rises above the safe operating range, the
laser source turns off, and the front-panel TEMP light turns on. Refer to “Operating Specifications for Sources and Receivers” on page 3-13 for safe operating
temperatures.
WARNING
Use of controls or adjustments or performance of procedures other
than those specified herein can result in hazardous radiation
exposure.
WARNING
Do not enable the laser when no fiber or equivalent device is attached
to the OPTICAL OUTPUT connector.
Three safety mechanisms are provided
The Agilent 83400-series sources have three safety mechanisms:
• A laser safety cap
• A key switch
• A rear-panel REMOTE SHUTDOWN BNC connector
2-2
General Information
Operating
Figure 2-1. Front and rear panels on a source
When the key is turned on, the laser is turned on and the front-panel LASER ON
light turns on. However, the rear-panel REMOTE SHUTDOWN BNC connector
must be shorted for the laser to operate. When the BNC short is removed
from the connector, the accessible radiation does not exceed the AEL for FDA
LASER Class IIIb (IEC LASER Class 3B) for the Agilent 83402C and FDA
LASER Class I (IEC LASER Class 1) for the Agilent 83403C according to IEC
Publication CE/IEC 821-1: 1993. Use your own short, switch, or other circuitry
to control the remote shutdown.
2-3
General Information
Operating
Receivers
Figure 2-2. Front and rear panels on a receiver
Front and rear panel features
While the DC IN connector provides a connection to power the receiver, the
DC OUT connector can be used to power to another source or receiver.
The front-panel OPTICAL INPUT connector has a special adapter which allows
you to easily change the front-panel connector to one of many standard interfaces. Refer to “Replaceable Parts” on page 2-5 for a figure which shows each
available connector. For Agilent 83411C/D receivers, use a single-mode 9 µm
optical fiber. For Agilent 83410C and Agilent 83412B receivers, use an
62.5 µm multimode optical fiber.
The AVG POWER connector provides an output voltage that is proportional to
the average optical power into the receiver.
The OVER ILLUMINATION light turns on whenever RF input power is too high.
The POWER ON light turns on when DC power is supplied.
The RF OUT connector provides the output for the demodulation (electrical)
signal. It is an SMA threaded female connector.
2-4
General Information
Replaceable Parts
Replaceable Parts
Table 2-1. Replaceable Parts for Sources and Receivers
Description
Agilent
Part Number
RF cable (SMA)
8120-5157
DC cable (probe power)
83400-60005
Cable clips
83400-20008
Laser shutter cover (sources)
08145-64521
Safety key (sources)
3100-1984
BNC short (m) for rear-panel REMOTE SHUTDOWN connector (sources)
1250-0774
One OPTICAL OUTPUT adapter must be ordered with the instrument. These
adapters are ordered as Option 011, 012, 013, 014, 015, or 017. These adapters
with their Agilent Technologies model numbers are shown in the following figure.
2-5
General Information
Front-Panel Optical Adapters
Front-Panel Optical Adapters
Front Panel
Fiber-Optic
Adapter
Description
Agilent Part Number
Diamond HMS-10
81000AI
FC/PCa
81000FI
D4
81000GI
SC
81000KI
DIN
81000SI
ST
81000VI
Biconic
81000WI
Dust Covers
FC connector
1005-0594
Diamond HMS-10 connector
1005-0593
DIN connector
1005-0595
ST connector
1005-0596
SC connector
1005-0597
a. The FC/PC adapter is the standard adapter supplied with the instrument.
2-6
General Information
Calibration Data Information
Calibration Data Information
The Agilent 8702-series lightwave component analyzers use the
Agilent 83400-series calibration data to mathematically remove contributing
errors from a measurement. Subsequent E/O and O/E device measurements
provide accurate measurements of your devices.
Recalibration is recommended every year
Although the Agilent 83400-series source and receiver modules are designed
to be stable, they can be returned to the factory for recharacterization (calibration) at a desired time for a reasonable fee. Agilent Technologies recommends that recharacterization be done at approximately one year intervals.
When returning the source or receiver modules for recharacterization, you
must return the original data disk. The disk and the instrument have the same
CAL DATA number. Contact an Agilent Technologies office for assistance.
Calibration data comes in two forms
Two types of calibration data are supplied with sources and receivers:
• Data points supplied on a 3.5 inch disk. For Agilent 8702A/B instruments, a
LIF-formatted disk is provided. It contains data for 101 points. For
Agilent 8702D instruments, a DOS-formatted disk is provided. This disk
contains data for 202 data points.
• 9 coefficients supplied on the source or receiver itself.
Both of these items represent the modulation transfer characteristics of your
particular source or receiver. Because no two sources or receivers are alike,
the calibration data should not be used with any other source or receiver.
The calibration data is loaded into the Agilent 8702’s memory as a calibration
kit. Your source or receiver was measured at the factory under optimal conditions and the calibration data is a model of its response under those conditions. In this manner, your source or receiver is a standard because its
response has already been characterized (modeled) and is now used to calibrate the system. Therefore, when you measure any other E/O or O/E device,
the modeled Agilent response is removed from the system, along with the
response of the optical/electrical cables and the lightwave source or receiver.
2-7
General Information
Calibration Data Information
Making a backup disk
Hewlett-Packard1 recommends that you make a backup or extra copy of the
disk data, label it properly, and make sure it is only used with the source or
receiver that its data describes.
If you need to make a backup copy of a LIF-formatted disk, you must have an
HP controller (computer). This includes all 200 and 300-series HP 9000 controllers such as, HP 9836, 9826, 310, 320, etc. In addition, the disk drive must
be an HP CS80 disk drive, such as an HP 9122C/D dual-sided model.
Refer to the computer’s User’s Guide for instructions on how to make back-up
copies or copy files.
How labeled coefficients are used
The labeled coefficient data consists of nine coefficients that are used in a
polynomial curve to describe the magnitude and phase modulation response
of the source or receiver. The curve terms (A through I) are derived from the
same data points that are on the disk.
A typical label, as shown in Figure 2-3 on page 2-9, has a CAL DATA # which
describes the data.
1. Hewlett-Packard and HP are registered trademarks of Hewlett-Packard Company.
2-8
General Information
Calibration Data Information
Interpreting filenames
Each digit in a filename has a specific meaning. For example, consider the number S2300045. The
digits, from left to right, have the following definitions:
Digit
Description
1st
S indicates single-mode fiber. M indicates multimode
fiber. D indicates diode only.
2nd
Indicates the modulation frequency range. 1 means up
to 3 GHz. 2 means up to 6 GHz.
3rd
Indicates the wavelength. 3 means 1300 nm. 5 means
1550 nm. 8 means 850 nm.
4th thru 8th
These remaining 5 digits are the specific calibration data
number for your source or receiver. This number is not
the same as the instrument’s serial number.
9th thru 10th
CR indicates a receiver. CS indicates a source. For DOS
formatted files, these digits form the filename
extension.
Figure 2-3. Calibration data label
2-9
General Information
Calibration Data Information
In the Agilent 8702D, these coefficients are applied to the following equation:
-jωB
3
2
( Ae
) ( C ( jω ) + D ( jω ) E ( jω ) + 1 )
responsivity (ω ) = -------------------------------------------------------------------------------------------------4
3
2
F ( jω ) + G ( jω ) + H ( jω ) + I ( jω ) + 1
where, ω = 2π ( frequency ) , j =
log.
– 1 , and e represents the base of the natural
In the equation, the coefficients are scaled as shown in the following table.
Although the coefficients are scaled as shown in the table, enter them exactly
as listed on the label.
Table 2-2. Coefficient Scaling in Equation
Coefficient
Scale Factor
Coefficient
Scale Factor
B
–10–9
F
10–39
C
10–30
G
–10–30
D
10–21
H
–10–21
E
10–12
I
10–12
2-10
General Information
Cleaning Connections for Accurate Measurements
Cleaning Connections for Accurate
Measurements
Today, advances in measurement capabilities make connectors and connection techniques more important than ever. Damage to the connectors on calibration and verification devices, test ports, cables, and other devices can
degrade measurement accuracy and damage instruments. Replacing a damaged connector can cost thousands of dollars, not to mention lost time! This
expense can be avoided by observing the simple precautions presented in this
book. This book also contains a brief list of tips for caring for electrical connectors.
Choosing the Right Connector
A critical but often overlooked factor in making a good lightwave measurement is the selection of the fiber-optic connector. The differences in connector types are mainly in the mechanical assembly that holds the ferrule in
position against another identical ferrule. Connectors also vary in the polish,
curve, and concentricity of the core within the cladding. Mating one style of
cable to another requires an adapter. Agilent Technologies offers adapters for
most instruments to allow testing with many different cables. Figure 2-4 on
page 2-12 shows the basic components of a typical connectors.
The system tolerance for reflection and insertion loss must be known when
selecting a connector from the wide variety of currently available connectors.
Some items to consider when selecting a connector are:
• How much insertion loss can be allowed?
• Will the connector need to make multiple connections? Some connectors are
better than others, and some are very poor for making repeated connections.
• What is the reflection tolerance? Can the system take reflection degradation?
• Is an instrument-grade connector with a precision core alignment required?
• Is repeatability tolerance for reflection and loss important? Do your specifica-
2-11
General Information
Cleaning Connections for Accurate Measurements
tions take repeatability uncertainty into account?
• Will a connector degrade the return loss too much, or will a fusion splice be required? For example, many DFB lasers cannot operate with reflections from
connectors. Often as much as 90 dB isolation is needed.
Figure 2-4. Basic components of a connector.
Over the last few years, the FC/PC style connector has emerged as the most
popular connector for fiber-optic applications. While not the highest performing connector, it represents a good compromise between performance, reliability, and cost. If properly maintained and cleaned, this connector can
withstand many repeated connections.
However, many instrument specifications require tighter tolerances than most
connectors, including the FC/PC style, can deliver. These instruments cannot
tolerate connectors with the large non-concentricities of the fiber common
with ceramic style ferrules. When tighter alignment is required, Agilent
Technologies instruments typically use a connector such as the Diamond
HMS-10, which has concentric tolerances within a few tenths of a micron. Agilent Technologies then uses a special universal adapter, which allows other
cable types to mate with this precision connector. See Figure 2-5.
2-12
General Information
Cleaning Connections for Accurate Measurements
Figure 2-5. Universal adapters to Diamond HMS-10.
The HMS-10 encases the fiber within a soft nickel silver (Cu/Ni/Zn) center
which is surrounded by a tough tungsten carbide casing, as shown in
Figure 2-6.
Figure 2-6. Cross-section of the Diamond HMS-10 connector.
The nickel silver allows an active centering process that permits the glass fiber
to be moved to the desired position. This process first stakes the soft nickel
silver to fix the fiber in a near-center location, then uses a post-active staking
to shift the fiber into the desired position within 0.2 µm. This process, plus the
keyed axis, allows very precise core-to-core alignments. This connector is
found on most Agilent Technologies lightwave instruments.
2-13
General Information
Cleaning Connections for Accurate Measurements
The soft core, while allowing precise centering, is also the chief liability of the
connector. The soft material is easily damaged. Care must be taken to minimize excessive scratching and wear. While minor wear is not a problem if the
glass face is not affected, scratches or grit can cause the glass fiber to move
out of alignment. Also, if unkeyed connectors are used, the nickel silver can be
pushed onto the glass surface. Scratches, fiber movement, or glass contamination will cause loss of signal and increased reflections, resulting in poor return
loss.
Inspecting Connectors
Because fiber-optic connectors are susceptible to damage that is not immediately obvious to the naked eye, poor measurements result without the user
being aware. Microscopic examination and return loss measurements are the
best way to ensure good measurements. Good cleaning practices can help
ensure that optimum connector performance is maintained. With glass-toglass interfaces, any degradation of a ferrule or the end of the fiber, any stray
particles, or finger oil can have a significant effect on connector performance.
Where many repeat connections are required, use of a connector saver or
patch cable is recommended.
Figure 2-7 shows the end of a clean fiber-optic cable. The dark circle in the
center of the micrograph is the fiber’s 125 µm core and cladding which carries
the light. The surrounding area is the soft nickel-silver ferrule. Figure 2-8
shows a dirty fiber end from neglect or perhaps improper cleaning. Material is
smeared and ground into the end of the fiber causing light scattering and poor
reflection. Not only is the precision polish lost, but this action can grind off the
glass face and destroy the connector.
Figure 2-9 shows physical damage to the glass fiber end caused by either
repeated connections made without removing loose particles or using
improper cleaning tools. When severe, the damage of one connector end can
be transferred to another good connector endface that comes in contact with
the damaged one. Periodic checks of fiber ends, and replacing connecting
cables after many connections is a wise practice.
The cure for these problems is disciplined connector care as described in the
following list and in “Cleaning Connectors” on page 2-18.
2-14
General Information
Cleaning Connections for Accurate Measurements
Use the following guidelines to achieve the best possible performance when
making measurements on a fiber-optic system:
• Never use metal or sharp objects to clean a connector and never scrape the
connector.
• Avoid matching gel and oils.
Figure 2-7. Clean, problem-free fiber end and ferrule.
Figure 2-8. Dirty fiber end and ferrule from poor cleaning.
2-15
General Information
Cleaning Connections for Accurate Measurements
Figure 2-9. Damage from improper cleaning.
While these often work well on first insertion, they are great dirt magnets. The
oil or gel grabs and holds grit that is then ground into the end of the fiber.
Also, some early gels were designed for use with the FC, non-contacting connectors, using small glass spheres. When used with contacting connectors,
these glass balls can scratch and pit the fiber. If an index matching gel or oil
must be used, apply it to a freshly cleaned connector, make the measurement,
and then immediately clean it off. Never use a gel for longer-term connections
and never use it to improve a damaged connector. The gel can mask the extent
of damage and continued use of a damaged fiber can transfer damage to the
instrument.
• When inserting a fiber-optic cable into a connector, gently insert it in as
straight a line as possible. Tipping and inserting at an angle can scrape material
off the inside of the connector or even break the inside sleeve of connectors
made with ceramic material.
• When inserting a fiber-optic connector into a connector, make sure that the fiber end does not touch the outside of the mating connector or adapter.
• Avoid over tightening connections.
Unlike common electrical connections, tighter is not better. The purpose of
the connector is to bring two fiber ends together. Once they touch, tightening
only causes a greater force to be applied to the delicate fibers. With connectors that have a convex fiber end, the end can be pushed off-axis resulting in
misalignment and excessive return loss. Many measurements are actually
improved by backing off the connector pressure. Also, if a piece of grit does
happen to get by the cleaning procedure, the tighter connection is more likely
to damage the glass. Tighten the connectors just until the two fibers touch.
2-16
General Information
Cleaning Connections for Accurate Measurements
• Keep connectors covered when not in use.
• Use fusion splices on the more permanent critical nodes. Choose the best connector possible. Replace connecting cables regularly. Frequently measure the
return loss of the connector to check for degradation, and clean every connector, every time.
All connectors should be treated like the high-quality lens of a good camera.
The weak link in instrument and system reliability is often the inappropriate
use and care of the connector. Because current connectors are so easy to use,
there tends to be reduced vigilance in connector care and cleaning. It takes
only one missed cleaning for a piece of grit to permanently damage the glass
and ruin the connector.
Measuring insertion loss and return loss
Consistent measurements with your lightwave equipment are a good indication that you have good connections. Since return loss and insertion loss are
key factors in determining optical connector performance they can be used to
determine connector degradation. A smooth, polished fiber end should produce a good return-loss measurement. The quality of the polish establishes
the difference between the “PC” (physical contact) and the “Super PC” connectors. Most connectors today are physical contact which make glass-to-glass
connections, therefore it is critical that the area around the glass core be clean
and free of scratches. Although the major area of a connector, excluding the
glass, may show scratches and wear, if the glass has maintained its polished
smoothness, the connector can still provide a good low level return loss connection.
If you test your cables and accessories for insertion loss and return loss upon
receipt, and retain the measured data for comparison, you will be able to tell in
the future if any degradation has occurred. Typical values are less than 0.5 dB
of loss, and sometimes as little as 0.1 dB of loss with high performance connectors. Return loss is a measure of reflection: the less reflection the better
(the larger the return loss, the smaller the reflection). The best physically
contacting connectors have return losses better than 50 dB, although 30 to
40 dB is more common.
2-17
General Information
Cleaning Connections for Accurate Measurements
Visual inspection of fiber ends
Visual inspection of fiber ends can be helpful. Contamination or imperfections
on the cable end face can be detected as well as cracks or chips in the fiber
itself. Use a microscope (100X to 200X magnification) to inspect the entire
end face for contamination, raised metal, or dents in the metal as well as any
other imperfections. Inspect the fiber for cracks and chips. Visible imperfections not touching the fiber core may not affect performance (unless the
imperfections keep the fibers from contacting).
WARNING
Always remove both ends of fiber-optic cables from any instrument,
system, or device before visually inspecting the fiber ends. Disable all
optical sources before disconnecting fiber-optic cables. Failure to do
so may result in permanent injury to your eyes.
Cleaning Connectors
The procedures in this section provide the proper steps for cleaning fiberoptic cables and Agilent Technologies universal adapters. The initial cleaning,
using the alcohol as a solvent, gently removes any grit and oil. If a caked-on
layer of material is still present, (this can happen if the beryllium-copper sides
of the ferrule retainer get scraped and deposited on the end of the fiber during
insertion of the cable), a second cleaning should be performed. It is not
uncommon for a cable or connector to require more than one cleaning.
CAUTION
Agilent Technologies strongly recommends that index matching compounds
not be applied to their instruments and accessories. Some compounds, such as
gels, may be difficult to remove and can contain damaging particulates. If you
think the use of such compounds is necessary, refer to the compound
manufacturer for information on application and cleaning procedures.
Table 2-3. Cleaning Accessories
Item
Agilent Part Number
Pure isopropyl alcohol
—
Cotton swabs
8520-0023
Small foam swabs
9300-1223
Compressed dust remover (non-residue)
8500-5262
2-18
General Information
Cleaning Connections for Accurate Measurements
Table 2-4. Dust Caps Provided with Lightwave Instruments
Item
Agilent Part Number
Laser shutter cap
08145-64521
FC/PC dust cap
08154-44102
Biconic dust cap
08154-44105
DIN dust cap
5040-9364
HMS10/dust cap
5040-9361
ST dust cap
5040-9366
To clean a non-lensed connector
CAUTION
Do not use any type of foam swab to clean optical fiber ends. Foam swabs can
leave filmy deposits on fiber ends that can degrade performance.
1 Apply pure isopropyl alcohol to a clean lint-free cotton swab or lens paper.
Cotton swabs can be used as long as no cotton fibers remain on the fiber end
after cleaning.
2 Clean the ferrules and other parts of the connector while avoiding the end of
the fiber.
3 Apply isopropyl alcohol to a new clean lint-free cotton swab or lens paper.
4 Clean the fiber end with the swab or lens paper.
Do not scrub during this initial cleaning because grit can be caught in the
swab and become a gouging element.
5 Immediately dry the fiber end with a clean, dry, lint-free cotton swab or lens
paper.
6 Blow across the connector end face from a distance of 6 to 8 inches using
filtered, dry, compressed air. Aim the compressed air at a shallow angle to the
fiber end face.
Nitrogen gas or compressed dust remover can also be used.
2-19
General Information
Cleaning Connections for Accurate Measurements
CAUTION
Do not shake, tip, or invert compressed air canisters, because this releases
particles in the can into the air. Refer to instructions provided on the
compressed air canister.
7 As soon as the connector is dry, connect or cover it for later use.
If the performance, after the initial cleaning, seems poor try cleaning the connector again. Often a second cleaning will restore proper performance. The
second cleaning should be more arduous with a scrubbing action.
To clean an adapter
The fiber-optic input and output connectors on many Agilent Technologies
instruments employ a universal adapter such as those shown in the following
picture. These adapters allow you to connect the instrument to different types
of fiber-optic cables.
Figure 2-10. Universal adapters.
1 Apply isopropyl alcohol to a clean foam swab.
Cotton swabs can be used as long as no cotton fibers remain after cleaning. The
foam swabs listed in this section’s introduction are small enough to fit into
adapters.
Although foam swabs can leave filmy deposits, these deposits are very thin, and
the risk of other contamination buildup on the inside of adapters greatly outweighs the risk of contamination by foam swabs.
2 Clean the adapter with the foam swab.
3 Dry the inside of the adapter with a clean, dry, foam swab.
4 Blow through the adapter using filtered, dry, compressed air.
Nitrogen gas or compressed dust remover can also be used. Do not shake, tip,
or invert compressed air canisters, because this releases particles in the can
into the air. Refer to instructions provided on the compressed air canister.
2-20
General Information
Theory of Operation
Theory of Operation
Agilent 83402C and Agilent 83403C sources
The lightwave sources consist of a laser diode, bias circuitry, and control circuitry. An attenuator and impedance matching network blocks the DC component from the RF input that modulates the laser light. The laser diode is made
from InGaAsP (Indium Gallium Arsenide Phosphide) and has a corresponding
back-face diode that is used to control or stabilize the lightwave output.
Notice that the laser creates light in both directions. The back-face diode
senses the laser output and sends a proportional current into the level control
circuit. This level control circuit sends more or less current through the coil to
adjust the bias current that controls the laser output.
The thermal control circuit uses a temperature sensor and a thermal electric
cooler to keep the laser at a steady ambient temperature. If the temperature
of the laser deviates from the present temperature by more than 5 degrees,
the thermal control circuit sends a signal to the level control circuit, which
then shuts down the laser. When this happens, the TEMP LED on the front
panel goes on.
The source also has a remote shut-down connector (BNC short) that, when
removed, turns off the laser. If properly used, this feature allows you to turn
the laser off from a distance. You will have to provide your own coaxial cable
with BNC connectors and, if desired, an appropriate switch or circuit. A typical example would be a laser setup in a room where you do not want anyone
entering while the laser is on. You could control the laser so that when the
door is opened, the remote shut-down connector is opened, and the laser
automatically turns off.
The DC IN connector provides power to the instrument from the
Agilent 8702A/B/D front-panel PROBE POWER connector or by a separate compatible power supply.
2-21
General Information
Theory of Operation
Figure 2-11. Source block diagram
Agilent 83410C, 83411C/D, and 83412B receivers
The lightwave receivers consist of an optical input connector and fiber, launch
objects, a PIN diode detector, a thin-film hybrid amplifier, and one DC circuit
board. The receiver’s input is a keyed HMS 10 connector with a graded index
fiber (9 µm for the Agilent 83411C/D receivers, 62.5 µm for the
Agilent 83410C and 83412B receivers) that is terminated into a graded index
lens. The design provides good environmental sealing and allows a low loss
and low reflection signal coupling to the diode.
The PIN diode has high linearity, wide bandwidth, and low dark current.
Notice that it is directly coupled into the first amplifier stage. This physically
small low impedance connection limits the effect of standing waves and diode
capacitance on the frequency response of the receiver. Three AC (capacitor)
coupled 50 ohm amplifiers follow the first amplifier stage.
2-22
General Information
Theory of Operation
Active bias circuitry is used in the first amplifier stage to hold its DC bias
fixed, while the DC photocurrent from the PIN diode varies. A combination
threshold/hysteresis function on the DC board monitors the output of the
active bias current and uses the signal to light the OVER ILLUMINATION LED if
the average optical input power exceeds 3.5 mW. If the input power continues
to increase, the receiver goes into an unspecified state and measurement data
will be invalid. If average power exceeds 5 mW, permanent damage could
result.
Figure 2-12. Agilent 83411C/D block diagram
2-23
General Information
Theory of Operation
Figure 2-13. Agilent 83410C and 83412B block diagram
2-24
General Information
Returning the Instrument for Service
Returning the Instrument for Service
The instructions in this section show you how to properly return the instrument for repair or calibration. Always call the Agilent Technologies Instrument
Support Center first to initiate service before returning your instrument to a
service office. This ensures that the repair (or calibration) can be properly
tracked and that your instrument will be returned to you as quickly as possible. Call this number regardless of where you are located. Refer to “Agilent
Technologies Service Offices” on page 2-28 for a list of service offices.
Agilent Technologies Instrument Support Center. . . . . . . . . . . (800) 403-0801
If the instrument is still under warranty or is covered by an Agilent Technologies maintenance contract, it will be repaired under the terms of the warranty
or contract (the warranty is at the front of this manual). If the instrument is
no longer under warranty or is not covered by an Agilent Technologies maintenance plan, Agilent Technologies will notify you of the cost of the repair after
examining the unit.
When an instrument is returned to a Agilent Technologies service office for
servicing, it must be adequately packaged and have a complete description of
the failure symptoms attached. When describing the failure, please be as specific as possible about the nature of the problem. Include copies of additional
failure information (such as the instrument failure settings, data related to
instrument failure, and error messages) along with the instrument being
returned.
Preparing the instrument for shipping
1 Write a complete description of the failure and attach it to the instrument.
Include any specific performance details related to the problem. The following
2-25
General Information
Returning the Instrument for Service
information should be returned with the instrument.
• Type of service required.
• Date instrument was returned for repair.
• Description of the problem:
• Whether problem is constant or intermittent.
• Whether instrument is temperature-sensitive.
• Whether instrument is vibration-sensitive.
• Instrument settings required to reproduce the problem.
• Performance data.
• Company name and return address.
• Name and phone number of technical contact person.
• Model number of returned instrument.
• Full serial number of returned instrument.
• List of any accessories returned with instrument.
2 Cover all front or rear-panel connectors that were originally covered when you
first received the instrument.
CAUTION
Cover electrical connectors to protect sensitive components from electrostatic
damage. Cover optical connectors to protect them from damage due to physical
contact or dust.
CAUTION
Instrument damage can result from using packaging materials other than the
original materials. Never use styrene pellets as packaging material. They do not
adequately cushion the instrument or prevent it from shifting in the carton.
They may also cause instrument damage by generating static electricity.
3 Pack the instrument in the original shipping containers. Original materials are
available through any Agilent Technologies office. Or, use the following
guidelines:
• Wrap the instrument in antistatic plastic to reduce the possibility of damage
caused by electrostatic discharge.
• For instruments weighing less than 54 kg (120 lb), use a double-walled, corrugated cardboard carton of 159 kg (350 lb) test strength.
• The carton must be large enough to allow approximately 7 cm (3 inches) on
all sides of the instrument for packing material, and strong enough to accommodate the weight of the instrument.
• Surround the equipment with approximately 7 cm (3 inches) of packing material, to protect the instrument and prevent it from moving in the carton. If
packing foam is not available, the best alternative is S.D-240 Air Cap™ from
2-26
General Information
Returning the Instrument for Service
Sealed Air Corporation (Commerce, California 90001). Air Cap looks like a
plastic sheet filled with air bubbles. Use the pink (antistatic) Air Cap™ to
reduce static electricity. Wrapping the instrument several times in this material will protect the instrument and prevent it from moving in the carton.
4 Seal the carton with strong nylon adhesive tape.
5 Mark the carton “FRAGILE, HANDLE WITH CARE”.
6 Retain copies of all shipping papers.
2-27
General Information
Agilent Technologies Service Offices
Agilent Technologies Service Offices
Before returning an instrument for service, call the Agilent Technologies
Instrument Support Center at (800) 403-0801, visit the Test and Measurement
Web Sites by Country page at http://www.tm.agilent.com/tmo/country/English/
index.html, or call one of the numbers listed below.
Agilent Technologies Service Numbers
Austria
01/25125-7171
Belgium
32-2-778.37.71
Brazil
(11) 7297-8600
China
86 10 6261 3819
Denmark
45 99 12 88
Finland
358-10-855-2360
France
01.69.82.66.66
Germany
0180/524-6330
India
080-34 35788
Italy
+39 02 9212 2701
Ireland
01 615 8222
Japan
(81)-426-56-7832
Korea
82/2-3770-0419
Mexico
(5) 258-4826
Netherlands
020-547 6463
Norway
22 73 57 59
Russia
+7-095-797-3930
Spain
(34/91) 631 1213
Sweden
08-5064 8700
Switzerland
(01) 735 7200
United Kingdom
01 344 366666
United States and Canada
(800) 403-0801
2-28
3
Specifications for Sources 3-3
Specifications for Receivers 3-7
Operating Specifications for Sources and Receivers
Regulatory Information 3-14
3-13
Specifications and Regulatory
Information
Specifications and Regulatory Information
Specifications and Regulatory Information
Specifications and Regulatory Information
This chapter lists specifications and characteristics of the instruments and
also includes regulatory information pertaining to the instruments. Specifications describe warranted performance over the temperature range 25°C ±5°C
and relative humidity <95% (unless otherwise noted). All specifications apply
after the instrument’s temperature has been stabilized after 1 hour of continuous operation, and that the optical connector adapter used is an HMS 10 Diamond.
Specifications
Specifications describe warranted performance.
Characteristics
Characteristics provide useful, but nonwarranted, information about the
functions and performance of the instrument. Characteristics are printed in
italics.
Calibration cycle
Agilent Technologies warrants instrument specifications over the recommended calibration interval. To maintain specifications, periodic recalibrations
are necessary. We recommend that Agilent 83411C/D receivers be calibrated
at an Agilent Technologies service facility every 24 months. We recommend
that all other sources and receivers be calibrated every 12 months.
3-2
Specifications and Regulatory Information
Specifications for Sources
Specifications for Sources
The following section includes specifications and characteristics of the
Agilent 83400-series sources.
Specifications and Characteristics for Sources (1 of 2)
Specification/Characteristic
83402C
83403C
1310 ±30 nm
1550 ±30 nm
WAVELENGTH
Center Wavelength a,b
0.3% per year
0.3% per year
Spectral Width (maximum) a,b
POWER
< 50 MHz
< 50 MHz
Average Power Out a,b
Optical Port Match (return loss) c(characteristics)
2000 µW – 3000 µW
2000 µW – 3000 µW
≥ 35.0 dBo
≥ 35.0 dBo
+11 dBm
20 V
+11 dBm
20 V
≥ 11 dB
≥ 11 dB
Modulation Frequency Response
300 kHz to 6 GHz
Corrected (disk)
Corrected (polynomial) (characteristic)
Uncorrected (characteristic)
Responsivity at 140 MHz Modulation Frequency
(characteristics)
±0.5 dBe
±1.5 dBe
+0.2/–4.8 dBe
±0.5 dBe
0.038 W/A
(–28 dBe)
±1.5 dBe
+0.2/–4.8 dBe
0.038 W/A
(–28 dBe)
Modulation (harmonic) Distortion e (characteristics)
RF power +10 dBm
300 kHz to 1 GHz
1 GHz to 3 GHz
3 GHz to 6 GHz
25.0 dBc
25.0 dBc
f
f
Center Wavelength Stability
b
MODULATION
RF Input Power (maximum) (characteristics)
DC into RF Port (maximum)
Electrical Input Port Match (return loss) d
a
Third Order Intercept (minimum) e (characteristics)
8.0 dBc
23 dBm
8.0 dBc
23 dBm
3-3
Specifications and Regulatory Information
Specifications for Sources
Specifications and Characteristics for Sources (2 of 2)
Specification/Characteristic
83402C
83403C
Equivalent Input Noise (characteristics)
0.01 to 5 GHz
5 to 6 GHz
–124 dBm/Hz
–119 dBm/Hz
–124 dBm/Hz
–119 dBm/Hz
±0.04 dBe
±0.04 dBe
FDA Laser Class III according
to 21 CFR 1040.10.
IEC Laser Class 3B according
to IEC 60825.
FDA Laser Class I according
to 21 CFR 1040.10.
IEC Laser Class 1 according to
IEC 60825.
Reflection Sensitivity g (characteristics)
300 kHz to 6 GHz
LASER CLASSIFICATION
a.
b.
c.
d.
e.
f.
g.
Factory test system.
No intensity modulation applied.
Measured with Agilent 8153A and Agilent 81534A return loss module.
Measured on Agilent 8703 from 130 MHz to 6 GHz.
Measured with +10 dBm RF input power, 0.01 to 6 GHz.
Changes linearly from 25 dBc at 1 GHz to 8 dBc at 3 GHz.
To a Fresnel reflection using a 9:1 optical coupler, averaging factor = 16.
Note
For the following graphs, all X-axis data begins at 0.0003 GHz.
3-4
Specifications and Regulatory Information
Specifications for Sources
Agilent 83402C: Modulation frequency response (characteristic)
Agilent 83402C: Electrical input port return loss (characteristic)
3-5
Specifications and Regulatory Information
Specifications for Sources
Agilent 83403C: Modulation frequency response (characteristic)
Agilent 83403C: Electrical input port return loss (characteristic)
3-6
Specifications and Regulatory Information
Specifications for Receivers
Specifications for Receivers
In the following table, demodulation frequency response values are determined as defined by the following equation:
linear responsivity
1 dB (A/W) = 20 log ---------------------------------------------------1 (A/W)
Specifications and Characteristics for Receivers (1 of 2)
Specification/Characteristic
OPTICAL PORT
Optical Port Match (return loss)a
(characteristic)
Maximum Average Optical Input Power
Responsivity (characteristic)
850 nm
1300 nm and 1550 nm
1300 nm
1550 nm
ELECTRICAL PORT
Electrical Input Port Match (return loss)
300 kHz to 3 GHz
300 kHz to 6 GHz
DC into RF Port (maximum)
Reverse RF Power Into RF OUT
DEMODULATION
Dynamic Accuracy (characteristics)
300 kHz to 2 GHz
0 to 30 dB Optical Attenuation
0 to 40 dB Optical Attenuation
83410C
83411C
83411D
83412B
≥ 30 dB
≥ 30 dB
≥ 30 dB
≥ 30 dB
5 mW
5 mW
5 mW
5 mW
–
20 dB, 10 A/W
–
–
–
–
–7 dB, 0.45 A/W
–8 dB, 0.40 A/W
–
–
17.0 dB, 7.0 A/W
16.0 dB, 6.3 A/W
16.5 dB, 6.5 A/W
–
–
–
≥ 13 dB
≥ 13 dB
–
–
≥ 13 dB
≥ 9.0 dB
20 V
20 dBm
20 V
20 dBm
–
20 V
20 dBm
±1.5 dB b
–
–
–
c
–
–
± 1.5 dB
–
20 V
20 dBm
±1.5 dB
3-7
Specifications and Regulatory Information
Specifications for Receivers
Specifications and Characteristics for Receivers (2 of 2)
Specification/Characteristic
83410C
83411C
83411D
83412B
300 kHz to 3 GHz
0 to 20 dB Optical Attenuation
–
± 1.5 dB b
0 to 25 dB Optical Attenuation
–
–
–
c
–
0 to 30 dB Optical Attenuation
2 GHz to 3 GHz
0 to 40 dB Optical Attenuation
–
± 1.5 dB
–
–
± 1.5 dB
–
± 2.0 dB c
± 2.0 dB c
3 GHz to 6 GHz
0 to 20 dB Optical Attenuation
–
± 2.0 dB
–
–
0 to 25 dB Optical Attenuation
–
–
± 1.5 dB c
–
Demodulation Frequency Response
Corrected (disk)
300 kHz to 2.5 GHz
2.5 GHz to 3 GHz
300 kHz to 3 GHz (characteristic)
300 kHz to 6 GHz
±0.5 dBe c
±0.6 dBe c
–
–
–
–
–
±0.5 dBe c
–
–
–
±0.5 dBe c
–
–
±0.5 dBe (Char.)
–
Corrected (polynomial) (characteristic)
300 kHz to 2 GHz
2 GHz to 3 GHz
300 kHz to 6 GHz
±1.5 dBe c
±1.5 dBe c
–
–
–
±1.5 dBe c
–
–
±1.5 dBe c
±2.5 dBe
±1.5 dBe
–
Uncorrected (characteristic)
300 kHz to 2 GHz
2 GHz to 3 GHz
300 kHz to 6 GHz
±3.0 dBe c
+3.0/–12.0 dBe c
–
–
–
+2.0/–3.0 dBe c
–
–
±3.0 dBe c
±3.0 dBe
+3.0/–13.0 dBe
–
25 dBc
–
–
25 dBc
–
25 dBc
25 dBc
–
> 1 mW
–
> 5 mW
> 1 mW
2 V/mW
50 mW
– 135 dBm/Hz
2 V/mW
1 mW
–135 dBm/Hz
2 V/mW
1 mV
–85 dBm/Hz
2 V/mW
50 mW
– 135 dBm/Hz
Harmonic Distortion (with –5 dBm output
power) (characteristic)
300 kHz to 3 GHz
300 kHz to 6 GHz
Compression Level (characteristic)
(1 dB) (electrical output power)
300 kHz to 2 GHz
Average Power Out (characteristic)
Scale
Offset
Average Output Noise (characteristic)
a. Measured on an Agilent 8702 system using time domain
b. 1550 nm
c. 1300 nm
3-8
± 2.0 dB
c
–
Specifications and Regulatory Information
Specifications for Receivers
Agilent 83410C: Demodulation frequency response (characteristic)
Agilent 83410C: Electrical output port return loss (characteristic)
3-9
Specifications and Regulatory Information
Specifications for Receivers
Agilent 83411C: Demodulation frequency response (characteristic)
Agilent 83411C: Electrical output port return loss (characteristic)
3-10
Specifications and Regulatory Information
Specifications for Receivers
Agilent 83411D: Demodulation frequency response (characteristic)
Agilent 83411D: Electrical output port return loss (characteristic)
3-11
Specifications and Regulatory Information
Specifications for Receivers
Agilent 83412B: Demodulation frequency response (characteristic)
Agilent 83412B: Electrical output port return loss (characteristic)
3-12
Specifications and Regulatory Information
Operating Specifications for Sources and Receivers
Operating Specifications for Sources and
Receivers
Use
Indoor
Voltage (DC power input)
–12.6 V ±5%
+15 V ±5%
Temperature Limits
Operating a
Non-operating
0°C to +55°C
–40° to +55°C
Maximum relative humidity
< 95%
Weight
1.5 kg (3.3 lb)
Dimensions (H x W x D)
8.5 x 8.5 x 23 cm (3.3 x 3.3 x 9.1 in)
a. This temperature range describes the operating limits of the instrument. Specifications and
characteristics apply over the reduced temperature range as described on page 3-2.
3-13
Specifications and Regulatory Information
Regulatory Information
Regulatory Information
• Laser Classification:
• The Agilent 83402C is classified as an FDA LASER Class IIIb (IEC LASER
Class 3B).
• The Agilent 83403C is classified as an FDA LASER Class I (IEC LASER Class
1).
• The lightwave sources comply with 21 CFR 1040.10 and CE/IEC 825-1: 1993.
• The products described in this manual are designed for use in INSTALLATION
CATEGORY II and POLLUTION DEGREE 2, per IEC 61010 and 60664 respectively.
Notice for
Germany: Noise
Declaration
This is to declare that this instrument is in conformance with the German Regulation on Noise Declaration for Machines (Laermangabe nach der Maschinenlaermverordnumg –3.GSGV Deutschland).
Acoustic Noise Emission
Geraeuschemission
LpA < 70 dB
Operator position
Normal position
per ISO 7779
LpA < 70 dB
am Arbeitsplatz
normaler Betrieb
nach DIN 45635 t.19
3-14
Specifications and Regulatory Information
Regulatory Information
Declaration of conformity (sources)
3-15
Specifications and Regulatory Information
Regulatory Information
Declaration of conformity (receivers)
3-16
4
Tests for Sources 4-4
1. Center Wavelength and Spectral Width 4-4
2. Average Output Power 4-5
3. Electrical Input Port Match 4-6
Tests for Receivers 4-7
1. Demodulation Frequency Response 4-7
2. RF Port Match 4-7
3. Dynamic Accuracy 4-8
Performance Tests
Performance Tests
Performance Tests
Performance Tests
The procedures in this section test the Agilent 83400-series performance
using the specifications listed in Chapter 3, “Specifications and Regulatory
Information” as the performance standard. None of these tests require access
to the interior of the instrument. Before beginning any tests, be sure to
observe the following points:
• Use an optical cable with a Diamond HMS-10 connector. Other connector types
may have greater return loss or may cause reflections resulting in measurement errors.
• Be sure that all optical connections are clean. Refer to “Cleaning Connections
for Accurate Measurements” on page 2-11.
• Allow the source or receiver to warm up for 1 hour before doing any of the performance tests.
WARNING
Do NOT, under any circumstances, look into the optical output or any
fiber/device attached to the output while the laser is in operation.
Calibration cycle
Agilent Technologies warrants instrument specifications over the recommended calibration interval. To maintain specifications, periodic recalibrations
are necessary. We recommend that Agilent 83411C/D receivers be calibrated
at an Agilent Technologies service facility every 24 months. We recommend
that all other sources and receivers be calibrated every 12 months.
4-2
Performance Tests
Performance Tests
71450 series
Polarization Controller
11896A
Lightwave Component Analyzer
8702
8702 Option 006
•
•
•
•
•
APC 7 mm to 3.5 mm Adapter
•
•
•
•
•
•
•
Lightwave Power Meter
8153A
Optical Attenuator
8156A
•
•
Lightwave Source
1300 nm
1550 nm
850 nm
83400/2
83403
83404
•
•
•
•
Reference Receiver
83412B
Optical Spectrum Analyzer
83411C/D
Recommended Agilent
Technologies Model
83410C
Instrument
83402C
83403C
Table 4-1. Required Equipment for Performance Tests
a
•
•
•
•
a. Characterized using a dual heterodyne YAG system (available only at the factory).
4-3
Performance Tests
Tests for Sources
Tests for Sources
1. Center Wavelength and Spectral Width
To perform this test, you need an Agilent 71450A/B-series optical spectrum
analyzer. These optical spectrum analyzers come with an advanced measurement program which automatically characterizes DFB lasers. Do not modulate
the source during this procedure.
1 Connect the equipment as shown in Figure 4-1.
Figure 4-1. Center wavelength and spectral width test setup
2 Turn on the Agilent 83400-series source and the optical spectrum analyzer,
and allow them to warm up for 1 hour.
3 Connect the output of the source to the optical spectrum analyzer’s input using
a 9 µm fiber-optic cable.
4 On the optical spectrum analyzer, press the AUTO MEAS key.
4-4
Performance Tests
Tests for Sources
5 Compare the measured values to the specified values listed in Chapter 3,
“Specifications and Regulatory Information”.
2. Average Output Power
Do not modulate the source during this procedure.
1 Connect the equipment as shown in Figure 4-2.
Figure 4-2. Average output power test setup
2 Turn on the Agilent 83400-series source and an optical power meter, and allow
them to warm up for 1 hour.
3 Calibrate the optical power meter, and then measure the output power of the
source. Compare the measured value to the specified power level listed in
Chapter 3, “Specifications and Regulatory Information”.
4-5
Performance Tests
Tests for Sources
3. Electrical Input Port Match
1 Connect the equipment as shown in Figure 4-3.
Figure 4-3. Electrical input port match test setup
2 Turn on the equipment, and allow them to warm up for 1 hour.
3 Use the Agilent 8702D’s “Guided Setup” feature to perform an electrical-toelectrical response test. Use the following settings:
Start frequency: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 kHz
Stop frequency (Agilent 83403C): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 GHz
Stop frequency (Agilent 83402C): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 GHz
Stimulus power: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 dBm
IF bandwidth: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Hz
4 The guided setup routine will step you through an S11, 1-port, electrical
calibration.
5 Place the Agilent 8702D in single-sweep mode, and use the marker functions
to locate the peak of the response.
6 Compare the measurement with the specification listed in Chapter 3,
“Specifications and Regulatory Information”.
4-6
Performance Tests
Tests for Receivers
Tests for Receivers
1. Demodulation Frequency Response
This performance test requires the use of a special lightwave reference
receiver that is calibrated using a dual-hetrodyne YAG system. Since these reference receivers are not commercially available, your instrument must be
returned to the factory to verify this specification.
2. RF Port Match
1 Connect the equipment as shown in Figure 4-4.
Figure 4-4. RF port match test setup
2 Turn on the equipment, and allow them to warm up for 1 hour.
4-7
Performance Tests
Tests for Receivers
3 Use the Agilent 8702D’s “Guided Setup” feature to perform an electrical-toelectrical response test. Use the following settings:
Start frequency: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 kHz
Stop frequency (Agilent 83410C/2B): . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 GHz
Stop frequency (Agilent 83411C/D): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 GHz
Stimulus power: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 dBm
IF bandwidth: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Hz
4 The guided setup routine will step you through an S11, 1-port, electrical
calibration.
5 Place the Agilent 8702D in single-sweep mode, and use the marker functions
to locate the peak of the response.
6 Compare the measurement with the specification listed in Chapter 3,
“Specifications and Regulatory Information”.
3. Dynamic Accuracy
Dynamic accuracy is not a specified performance parameter. However, this
procedure is provided for comparison with the characteristic value.
1 Connect the system as shown in Figure 4-5.
2 Turn on the equipment, and allow them to warm up for 1 hour.
3 Set the Agilent 8702D to the following settings:
Start frequency: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 kHz
Stop frequency:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 GHz
Stimulus power: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 dBm
IF bandwidth: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Hz
4 When adjusting the power level in the previous step, set the optical attenuator
so that the maximum E/E trace shown on the Agilent 8702D is –5 dBm
(±0.2 dBm). This is the 0 dBm optical attenuation level.
5 Set the optical attenuator to –10 dB (optical) below the 0 dB level. On the
Agilent 8702D, read the E/E trace as 20 dB below the trace level set in the
previous step.
4-8
Performance Tests
Tests for Receivers
Figure 4-5. Dynamic accuracy test setup
6 Use the Agilent 8702D’s “Guided Setup” feature to begin an optical bandwidth
(transmission) test.
During the isolation calibration portion of the guided setup routine, temporarily set the attenuator to 0 dB attenuation. Also, turn on averaging, and set its
value to 10 averages. After calibration, turn averaging off.
7 After completing the guided setup procedure, step the optical attenuator in
10 dB increments starting at 0 dB. At each step, adjust the Agilent 8702D’s
reference level as shown in the following list:
0 dB level: ref level = +20 dB
10 dB optical attenuation: ref level = 0 dB
20 dB optical attenuation: ref level = –20 dB
30 dB optical attenuation: ref level = –40 dB
40 dB optical attenuation: ref level = –60 dB
(1300 nm wavelength only)
Determine the maximum difference between the trace and the reference line
at each 10 dB increment. Compare the measured value with the specification
listed in Chapter 3, “Specifications and Regulatory Information”. On the –40 dB
step, add 1% smoothing. Use up to 20 averages, if necessary.
4-9
Performance Tests
Tests for Receivers
Additional Steps
for 83411C/D
Repeat the procedure using a start frequency of 3 GHz and a stop frequency of
6 GHz. Insert a polarization controller between the lightwave source and the
optical attenuator as shown in Figure 4-6.
Figure 4-6. Dynamic accuracy test setup for 6 GHz modulation frequency range
4-10
Index
A
D
Agilent offices, 2-28
average output
noise, 3-8
power test, 4-5
average power out, 3-3, 3-8
damaged shipment, 1-4
data label, 2-9
DC cable, 2-5
DC IN connector, 2-21
DC power input voltage, 3-13
declaration of conformity, 3-15–3-16
demodulation frequency response, 3-8
test procedure, 4-7
DFB lasers, 4-4
dimensions of instrument, 3-13
disk, back-up data, 2-8
DOS-formatted disk, 2-7
dual-hetrodyne YAG system, 4-7
dust caps, 2-19
dynamic accuracy, 3-7, 4-8
B
back-up data disk, 2-8
BNC short, 2-5
C
cabinet, cleaning, vi, 1-2
cable clips, 2-5
cable, optical, 4-2
cal data number, 2-7
calibration
cycle, 3-2, 4-2
data, 1-2, 2-7
data label, 2-9
care
of cabinet, vi
care of cabinet, 1-2
center wavelength, 3-3
procedure, 4-4
stability, 3-3
characteristics
receivers, 3-7
sources, 3-3
classification
product, vi
classification, laser, 1-5, 3-14
cleaning
adapters, 2-20
cabinet, vi, 1-2
fiber-optic connections, 2-11, 2-19
non-lensed connectors, 2-19
coefficients, scaling, 2-10
compressed dust remover, 2-18
compression level, 3-8
connecting a receiver, 1-8
connecting a source, 1-5
connector
care, 2-11
cotton swabs, 2-18
E
electrical input port match
receivers, 3-7
sources, 3-3
test procedure, 4-6
electrical output power, 3-8
equipment required
receiver tests, 4-3
F
Fabry-Perot lasers, 4-4
FC/PC adapter, 2-5
fiber
adapters, 2-6
fiber optics
cleaning connections, 2-11
connectors, covering, 2-26
filenames, interpreting, 2-9
foam swabs, 2-18
frequency response, 3-3, 3-8
test procedure, 4-7
front panel
adapters, 2-6
receiver, 2-4
source, 2-3
fuse
values, vi
Index-1
Index
H
harmonic distortion
receivers, 3-8
sources, 3-3
humidity, 3-13
I
IEC Publication 61010-1, vi
IEC Publication 825, 2-21
input
connector, 2-11
RF power, 3-3
voltage, 3-13
input port match, 3-7
electrical, 3-3
electrical test, 4-6
inspecting
instrument, 1-4
installing, 1-2
instrument
dimensions, 3-13
returning for service, 2-25
weight, 3-13
interpreting filenames, 2-9
L
label, laser safety, 1-5
laser
classification, 1-5, 3-14
Fabry-Perot/DFB, 4-4
radiation protection, 1-5
safety label, 1-5
shutter cover, 2-5
turning off, 2-21
LASER ON LED, 1-7
LED, 1-7
OVER ILLUMINATION, iii, 2-23
TEMP, 2-21
LIF-formatted disk, 2-7
frequency response, 3-3
N
noise declaration, 3-14
non-operating temperature, 3-13
O
operating
a receiver, 1-8
a source, 1-5
temperature, 3-13
optical cable, 4-2
OPTICAL INPUT connector, 1-8
OPTICAL OUT connector, 1-5
optical port match, 3-3
receivers, 3-7
output
noise, 3-8
power, 3-8
power test, 4-5
OVER ILLUMINATION LED, iii, 2-23
P
packaging for shipment, 2-26
performance tests, 4-2
average output power, 4-5
center wavelength, 4-4
demodulation frequency response, 4-7
dynamic accuracy, 4-8
electrical input port match, 4-6
RF port match, 4-7
spectral width, 4-4
warm-up time, 4-2
polynomial curve, 2-8
port match, 3-3, 3-7
electrical input test, 4-6
port RF match test, 4-7
power input voltage, 3-13
power output, 3-3, 3-8
PROBE POWER connector, 2-21
M
maximum relative humidity, 3-13
measurement accuracy, 1-3
modulation
distortion, 3-3
Index-2
R
radiation, laser protection, 1-5
rear panel
Index
receiver, 2-4
remote shutdown connector, 2-5
source, 2-3
recalibration, 2-7
receiver
characteristics, 3-7
connecting and operating, 1-8
declaration of conformity, 3-16
front and rear panel, 2-4
performance tests, 4-7
reference, 4-7
replaceable parts, 2-5
required test equipment, 4-3
specifications, 3-7
theory of operation, 2-22
receiver performance tests
demodulation frequency response, 4-7
dynamic accuracy, 4-8
RF port match, 4-7
recharacterization, 2-7
reference receiver, 4-7
regulatory duration, 3-2
relative humidity, 3-13
REMOTE SHUTDOWN connector, 1-5, 2-5
replaceable parts, 2-5
required equipment
receiver tests, 4-3
responsivity
receivers, 3-7
sources, 3-3
returning for service, 2-25
RF cable, 2-5
RF input power, 3-3
RF OUT connector, 1-8
RF port match test, 4-7
S
safety, vi
key, 2-5
laser classification, vi
laser label, 1-5
sales and service offices, 2-28
scaling coefficients, 2-10
serial number of instrument, 1-4
service, 2-25
returning for, 2-25
sales and service offices, 2-28
shipping
damage, 1-4
procedure, 2-25
size of instrument, 3-13
source
characteristics, 3-3
connecting and operating, 1-5
declaration of conformity, 3-15
front and rear panel, 2-3
performance tests, 4-4
replaceable parts, 2-5
specifications, 3-3
theory of operation, 2-21
source performance tests
average output power, 4-5
center wavelength, 4-4
electrical input port match, 4-6
spectral width, 4-4
specifications, 3-2
definition of terms, 3-2
receivers, 3-7
sources, 3-3
spectral width, 3-3
performance test, 4-4
stability, center wavelength, 3-3
swabs, 2-18
T
TEMP LED, 1-7, 2-21
temperature limits, 3-13
test equipment
receiver tests, 4-3
theory of operation, 2-21
turning off the laser, 2-21
typical center wavelength, 3-3
typical dynamic accuracy, 4-8
V
voltage, 3-13
W
warm-up time
performance tests, 4-2
wavelength test procedure, 4-4
weight, 3-13
Index-3
Index
width (spectral) procedure, 4-4
Y
YAG system, dual-hetrodyne, 4-7
Index-4
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