Agilent 83433A Lightwave Transmitter User’s Guide
© Copyright Agilent Technologies 2000 All Rights Reserved. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under copyright laws. Agilent Part No. 83433-90001 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.
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.
General Safety Considerations CAUTION This product is designed for use in Installation Category II and Pollution Degree 2 per IEC 61010-1 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.
General Safety Considerations Laser classification The Agilent 83433A is classified as an IEC LASER Class 3B according to IEC 825-1:1999-11, and an FDA LASER class 3B according to 21CFR 1040.10. The total power of light energy radiated out of the LASER OUT connector is 8.5 to 11 dBm. Operator precautions are necessary to maintain safety. The Agilent 83433A contains no user serviceable parts. Removal of covers may result in hazardous radiation exposure.
The Agilent 83433A—At a Glance The Agilent 83433A—At a Glance The Agilent 83433A lightwave transmitter is based on a lithium niobate modulator driven by an internal CW DFB 1552.52 nm laser. The laser and modulator are inter-connected externally with a PMF fiber. The modulator can also be used with an external laser with polarization maintaining fiber such as the Agilent 8164A, with 81680A option 071. The Agilent 83433A is designed to produce high fidelity, low jitter waveforms for 2.
Contents The Agilent 83433A—At a Glance vi 1 Getting Started 2 Using the Agilent 83433A Front-Panel Features 2-2 Rear-Panel Features 2-4 Using a Laser Source 2-5 Performing a Quick Confidence Check 2-6 Connecting the Agilent 83433A to a Bit-Error-Ratio Test Set 2-9 Connecting the Agilent 83433A to an Oscilloscope 2-11 3 Reference Options 3-2 Replacement Parts 3-3 Front-Panel Fiber-Optic Adapters 3-4 Power Cords 3-5 Cleaning Connections for Accurate Measurements 3-6 Returning the Instrument for Service 3-17
1 Step 1. Inspect the Shipment 1-3 Step 2. Check the Fuse 1-5 Step 3. Connect the Line-Power Cable 1-6 Step 4. Turn on the Agilent 83433A 1-8 Step 5. Avoid costly repairs 1-9 Step 6.
Getting Started Setting Up the Agilent 83433A Setting Up the Agilent 83433A The instructions in this chapter show you how to install your lightwave transmitter. After you’ve completed this chapter, continue with Chapter 2, “Using the Agilent 83433A”. Refer to Chapter 3, “Reference” for the following additional information: • Tips on avoiding costly repairs by proper optical connection cleaning techniques. • Lists of available accessories and power cords.
Getting Started Setting Up the Agilent 83433A Step 1. Inspect the Shipment NOTE The Agilent 83433A is supplied with an optical jumper cable. To avoid costly replacement, do not misplace this cable. ❒ Inspect the shipping container for damage. ❒ Inspect the instrument. ❒ Verify that you received the options and accessories you ordered.
Getting Started Setting Up the Agilent 83433A If anything is missing or defective, or if the lightwave transmitter does not pass the verification test, contact your nearest Agilent Technologies Sales Office. If the shipment was damaged, contact the carrier, then contact the nearest Agilent Technologies Sales Office. Keep the shipping materials for the carrier’s inspection. The Agilent Sales Office will arrange for repair or replacement at Agilent Technologies’ option without waiting for claim settlement.
Getting Started Setting Up the Agilent 83433A Step 2. Check the Fuse 1 Locate the line-input connector on the instrument’s rear panel. 2 Disconnect the line-power cable if it is connected. 3 Use a small flat-blade screwdriver to pry open the fuse holder door. 4 The fuse is housed in a small container. Insert the tip of a screwdriver on the side of the container and gently pull outward to remove the container. A spare fuse is stored below the line fuse.
Getting Started Setting Up the Agilent 83433A Step 3. Connect the Line-Power Cable 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 as described in the following paragraphs. Damage to the equipment could result. CAUTION This instrument has autoranging line voltage input.
Getting Started Setting Up the Agilent 83433A Line Power Requirements Voltage Frequency nominal: 115 VAC range: 90–132 V nominal: 230 VAC range: 98–254 V nominal: 50 Hz/60 Hz range: 47–63 Hz 2 Connect the line-power cord to the rear-panel connector of the instrument. 3 Connect the other end of the line-power cord to the power receptacle. Various power cables are available to connect the Agilent 83433A to ac power outlets unique to specific geographic areas.
Getting Started Setting Up the Agilent 83433A Step 4. Turn on the Agilent 83433A • Press the front-panel LINE key. All front-panel LED’s will light momentarily. The line power indicator will remain lit. NOTE The front panel LINE switch disconnects the mains circuit from the mains supply after the EMC filters and before other parts of the instrument.
Getting Started Setting Up the Agilent 83433A Step 5. Avoid costly repairs CAUTION Fiber-optic connectors are easily damaged when connected to dirty or damaged cables and accessories. The front-panel connectors of the Agilent 83433A are no exception. When you use improper cleaning and handling techniques, you risk expensive instrument repairs, damaged cables, and compromised measurements.
Getting Started Setting Up the Agilent 83433A Step 6. Learn more about our products To learn more about this or any Agilent Technologies product, visit our website at http://www.agilent.com. To learn more about Fiber Optic Test Equipment, go to the Agilent Technologies home page listed above, and follow this path: 1 Click Products. 2 Click Test and Measurement. 3 Under Products, click Fiber Optic Test Equipment. This path will take you to the Fiber Optic Test Equipment page.
2 Front-Panel Features 2-2 Rear-Panel Features 2-4 Using a Laser Source 2-5 Performing a Quick Confidence Check 2-6 Connecting the Agilent 83433A to a Bit-Error-Ratio Test Set 2-9 Connecting the Agilent 83433A to an Oscilloscope 2-11 Using the Agilent 83433A
Using the Agilent 83433A Front-Panel Features Front-Panel Features LASER ENABLE This key disables the Internal Class IIIB laser when in the OFF position. Be sure this key is in the OFF position before making or removing any optical connections. DATA INPUT Modulation input for digital signals. The input is AC coupled. DATA PRESENT INDICATOR Lights when LASER ENABLE is ON and valid data is present. WAVELENGTH ADJUST Allows you to adjust the laser’s wavelength when the variable mode is activated.
Using the Agilent 83433A Front-Panel Features WAVELENGTH ADJUST ENABLE Toggles between preset laser wavelength and wavelength adjust mode. (Light turns on to indicate you can adjust the setting using the knob.). OPTICAL OUT Provides the modulated optical output for the instrument. A universal adapter is used that can be removed and replaced with different adapters as needed (refer to “Front-Panel Fiber-Optic Adapters” on page 3-4).
Using the Agilent 83433A Rear-Panel Features Rear-Panel Features 2-4
Using the Agilent 83433A Using a Laser Source Using a Laser Source The Agilent 83433A contains an IEC LASER Class 3B according to IEC 60825. The total power of light energy radiated out of the LASER OUT connector is 8.5 to 11 dBm. Use caution when making or breaking connections to the front panel. Three safety mechanisms are provided: • A laser safety shutter over the front-panel CLASS IIIB INTERNAL LASER OUT connector. This shutter must be opened when attaching or removing cables.
Using the Agilent 83433A Performing a Quick Confidence Check Performing a Quick Confidence Check This procedure verifies the basic functionality of the lightwave transmitter. The following equipment is used: • • • • Agilent 83433A lightwave transmitter Pattern generator Clock source Optical multimeter Note Before starting be sure to clean all connectors and optical interfaces using the procedures describe in “Cleaning Connections for Accurate Measurements” on page 3-6.
Using the Agilent 83433A Performing a Quick Confidence Check 5 Connect the data output of the pattern generator to the DATA INPUT of the 83433A. 6 Use the ruggedized optical cable with Panda polarization maintaining fiber to connect the 83433A CLASS IIIB INTERNAL LASER OUTPUT to the EXTENAL LASER INPUT. 7 Connect the 83433A CLASS I OPTICAL OUT to the input of an optical multimeter. 8 Set the pattern generator as follows: Clock output frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Agilent 83433A Performing a Quick Confidence Check If the verification check fails If the lightwave transmitter does not pass the verification check, you should review the procedure being performed when the problem occurred. A few minutes spent performing some simple checks may save waiting for your instrument to be repaired.
Using the Agilent 83433A Connecting the Agilent 83433A to a Bit-Error-Ratio Test Set Connecting the Agilent 83433A to a Bit-Error-Ratio Test Set The following procedure describes how to connect the lightwave transmitter to a bit-error-ratio test set (BERT). The following equipment is used: • • • • Agilent 83433A lightwave transmitter Lightwave receiver or Agilent 83434A Bit error ratio tester or Agilent 71612B error performance analyzer Optical attenuator 1 Connect the equipment as shown in Figure 2-2.
Using the Agilent 83433A Connecting the Agilent 83433A to a Bit-Error-Ratio Test Set Figure 2-2. Connecting the Agilent 83433A to a bit-error-ratio test system. 2 Use the optical cable with Panda polarization maintaining fiber to connect the Agilent 83433A CLASS IIIb INTERNAL LASER output to the EXTERNAL LASER INPUT. 3 Adjust the optical attenuator so the power to the receiver is between 0 dBm and –16 dBm.
Using the Agilent 83433A Connecting the Agilent 83433A to an Oscilloscope Connecting the Agilent 83433A to an Oscilloscope The following procedure describes how to connect the lightwave transmitter to an oscilloscope.
3 Options 3-2 Replacement Parts 3-3 Front-Panel Fiber-Optic Adapters 3-4 Power Cords 3-5 Cleaning Connections for Accurate Measurements Returning the Instrument for Service 3-17 Agilent Technologies Service Offices 3-20 Reference 3-6
Reference Options Options Accessories supplied The Agilent 83433A lightwave transmitter is shipped with: • FC/PC connector adapter on the optical output of the lightwave transmitter unless a different option was ordered. Refer to Table 3-1, “Agilent 83433A Options,” on page 3-2 for a complete list of the available connector interfaces. • Optical jumper cable, Agilent part number 5022-1843. • Agilent 83433A Lightwave Receiver User’s Guide, Agilent part number 83434-90001.
Reference Replacement Parts Replacement Parts Table 3-2. Replaceable Parts Description Agilent Part Nmmber APC 3.5 F-to-F (connector saver) 5061-5311 APC 3.
Reference Front-Panel Fiber-Optic Adapters Front-Panel Fiber-Optic 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.
Reference Power Cords Power Cords Plug Type Cable Part No.
Reference 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.
Reference Cleaning Connections for Accurate Measurements Figure 3-1. 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.
Reference Cleaning Connections for Accurate Measurements 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 3-3. Figure 3-3. 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.
Reference Cleaning Connections for Accurate Measurements Inspecting Connectors Because fiber-optic connectors are susceptible to damage that is not immediately obvious to the naked eye, bad measurements can be made without the user even being aware of a connector problem. Although microscopic examination and return loss measurements are the best way to ensure good connections, they are not always practical.
Reference Cleaning Connections for Accurate Measurements Figure 3-4. Clean, problem-free fiber end and ferrule. Figure 3-5. Dirty fiber end and ferrule from poor cleaning. Figure 3-6. 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.
Reference Cleaning Connections for Accurate Measurements nectors, 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.
Reference Cleaning Connections for Accurate Measurements duce 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.
Reference Cleaning Connections for Accurate Measurements 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.
Reference Cleaning Connections for Accurate Measurements Table 3-3. Cleaning Accessories Item Agilent Part Number Any commercially available denatured alcohol — Cotton swabs 8520-0023 Small foam swabs 9300-1223 Compressed dust remover (non-residue) 8500-5262 Table 3-4.
Reference Cleaning Connections for Accurate Measurements 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.
Reference Cleaning Connections for Accurate Measurements 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.
Reference 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.
Reference Returning the Instrument for Service 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 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.
Reference Returning the Instrument for Service rugated 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.
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.
4 Agilent 83433A Specifications and Characteristics Regulatory Information 4-6 4-3 Specifications and Regulatory Information
Specifications and Regulatory Information Specifications and Regulatory Information Specifications and Regulatory Information This chapter lists specification and characteristics of the instrument. The distinction between these terms is described as follows: • Specifications describe warranted performance over the temperature range 0°C to +45°C and relative humidity <95% non-condensing (unless otherwise noted).
Specifications and Regulatory Information Agilent 83433A Specifications and Characteristics Agilent 83433A Specifications and Characteristics OPERATING SPECIFICATIONS Digital Data Input Data rate compatibility Amplitudea Return loss 0.1 to 5000 MHz 5000 to 10,700 MHz Impedance Mark density Maximum run of consecutive “ones” or “zeros” Polarity 2.4 to 10.7 Gb/s 0.5 to 1.
Specifications and Regulatory Information Agilent 83433A Specifications and Characteristics Modulated Optical Output Modulator insertion loss Optical power outpute Output return loss Extinction ratiof Jitter generationg OC-192 data ratef Eye mask OC-192 data rate OC-48 data rate 3 to 7 dB 0 to +5.5 dBm 27 dB minimum 12 dB minimum 0.15 UI pk-pk max.
Specifications and Regulatory Information Agilent 83433A Specifications and Characteristics EMI Radiated and conducted emissions are in compliance with the requirements of CISPR Publication 11, Class A and immunity in compliance with IEC 61326-1 a. AC coupled. b. Input power greater than +10 dBm may cause modulated optical output power to exceed Class I level. c. Class IIIB laser output. d. Wavelength adjustment disabled. e. Average power with internal laser modulated with 231-1 PRBS. f.
Specifications and Regulatory Information Regulatory Information Regulatory Information • Laser Classification: This product contains an IEC LASER Class 3B according to IEC 60825-1 Title 21 Part 1040. • This product contains an FDA laser Class IIIb according to 21CFR 1040.10. • This product is designed for use in INSTALLATION CATEGORY II and POLLUTION DEGREE 2, per IEC 61010-1 and 664 respectively.
Specifications and Regulatory Information Regulatory Information Declaration of Conformity 4-7
Index A E accessories, 3-2 adapters, 2-3 fiber optic, 3-4 adjusting wavelength, 2-2 Agilent offices, 3-20 external laser input, 2-3 B BERT connecting to, 2-9 bit-error-ratio test set, 2-9 C cabinet, cleaning, iii calibration cycle, 4-2 care of cabinet, iii class IIIB internal laser out, 2-3 classification laser, v, 4-6 product, iii cleaning adapters, 3-15 cabinet, iii fiber-optic connections, 3-6, 3-14 non-lensed connectors, 3-14 compressed dust remover, 3-14 connecting to a BERT bit-error-rate test s
Index M maintenance contract, 2-8 measurement accuracy, iv N sales and service offices, 3-20 shipping procedure, 3-18 spare fuse, 1-5 specifications definition of terms, 4-2 swabs, 3-14 noise declaration, 4-6 U O using a laser source, 2-5 optical out connector, 2-3 oscilloscope connecting to, 2-11 V P verification test failing, 2-8 verifying operation, 2-6 packaging for shipment, 3-18 power cable requirements, 1-6 preset wavelength, 2-3 W Q quick confidence check, 2-6 R radiation exposure, v r
