Related Manuals for Keysight N77 Series N7711A
Summary of Contents for Keysight N77 Series N7711A
- Page 1 Keysight N77xx Series N7711A Single-Port Tunable Laser System Source N7714A 4-Port Tunable Laser System Source User’s Guide...
- Page 3 OR OF ANY INFORMATION hazard. It calls attention to an CONTAINED HEREIN. SHOULD Herrenberger Str. 130 operating procedure, practice, KEYSIGHT AND THE USER HAVE A or the like that, if not correctly 71034 Böblingen, Germany SEPARATE WRITTEN AGREEMENT performed or adhered to, could...
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Page 4: Table Of Contents
Contents Getting Started Overview Keysight N7711/4A Single and 4-Port Tunable Laser System Source Initial Inspection Safety Considerations Safety Considerations - Overview Safety Symbols General Operating Environment Line Power Requirements Initial Safety Information for Tunable Laser Modules Laser Safety Labels Input/Output Signals... - Page 5 Connecting over USB Finding the IP Address of an instrument Connecting over LAN Claims and Repackaging Claims and Repackaging Return Shipments to Keysight Technologies N77xx Viewer Common User Interface Functions Connecting to an Instrument Viewing Measurements and Settings Saving and Recalling Configurations...
- Page 6 Acoustic Noise Information Germany Remove all doubt Remove all doubt Keysight E-mail Updates 65 Keysight Direct Keysight Open www.keysight.com Accessories Accessories - Overview Instrument and Options - Keysight N7711A, N7714A 70 Cables Maintenance and Troubleshooting Maintenance and Troubleshooting - Overview Keysight N77xx Series...
- Page 7 How to clean connectors How to clean connector adapters How to clean bare fiber adapters How to clean optical glass plates Additional Cleaning Information Other Cleaning Hints Firmware Upgrades Error Messages SYST:ERR? Data Sanitation Memory Inventory Clearing User Data Index Keysight N77xx Series...
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Page 8: Overview
Keysight N77xx Series User's Guide Getting Started Overview This chapter helps you start using your N77-Series instrument. • “Initial Inspection” on page 8 • “Safety Considerations - Overview” on page 9 • “AC Line Power Supply Requirements - Overview” on page 15 •... -
Page 9: Getting Started
Tunable Laser data sheet, publication no. 5988-8518EN. All models can reach any wavelength point within their specified wavelength range just like all other Keysight tunable lasers. In this mode, code compatibility with existing test setups based on Agilent’s range of full-size and compact tunable lasers is a great asset. In system loading applications, it may be preferable to grid-tune the lasers like system transmitters, simply by changing the channel index. -
Page 10: Safety Considerations
Keysight Technologies Inc. assumes no liability for the customer’s failure to comply with these requirements. This product has been designed and tested in accordance with IEC... -
Page 11: General
To avoid hazardous electrical shock, do not perform electrical tests when there W A R N I N G are signs of shipping damage to any portion of the outer enclosure (covers, panels, and so on). Keysight N77xx Series... -
Page 12: Operating Environment
Options 110, 111, 210, 211, Options 101, 111, 201, 211, 222, 240 222, 204 Laser Type ECL-Laser InGaAsP ECL-Laser InGaAsP Wavelength range 1527nm-1566nm 1570nm-1609nm Max. CW output power* 50 mW 50 mW Beam waist diameter 9 µm 9 µm Keysight N77xx Series... -
Page 13: Laser Safety Labels
In order to meet the requirements of IEC 60825-1 we recommend that you stick the laser safety labels, in your language, onto a suitable location on the outside of the instrument where they are clearly visible to anyone using the instrument. Keysight N77xx Series... -
Page 14: Input/Output Signals
The type of power cable shipped with each instrument depends on the country of destination. Please refer to “Accessories - Overview” on page 69“ the part numbers of available power cables. Keysight N77xx Series... -
Page 15: Instrument Markings
• Defective, damaged, or malfunctioning laser sources must be returned to an Keysight Technologies Service Center. Do not operate the instrument in the presence of flammable gases or fumes. Operation of any electrical instrument in such an environment constitutes a definite safety hazard. -
Page 16: Ac Line Power Supply Requirements
The recycling symbol indicates the general ease with which the instrument can be recycled. Do not dispose in domestic household waste. To return unwanted products, contact your local Keysight office, or http://about.keysight.com/en/ companyinfo/environment/ takeback.shtml for more information. AC Line Power Supply Requirements... - Page 17 Do not negate this protective action by using an extension cord without a protective conductor. • Do not interrupt the protective earth connection intentionally. The AC power requirements are summarized on the rear panel of the instrument. Keysight N77xx Series...
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Page 18: Changing The Fuse
There is no user replaceable fuse for the instrument. Changing the fuse should be C A U T I O N carried out only by Keysight Technologies service personnel. If you need to get the fuse replaced refer to your nearest Keysight Technologies Sales/Service Office. -
Page 19: Humidity
75 mm (3 inches) of clearance at the rear, and at least 25 mm (1 inch) of clearance at each side. Failure to provide adequate air clearance may result in excessive internal temperature, reducing instrument reliability. The instrument should not be operated when resting on its rear or side panels. Keysight N77xx Series... -
Page 20: Input And Output Connectors
Getting Started Figure 4 Correct Operating Position (shown here for the Keysight N7744/5A, valid also for the N7751/2A, Keysight N7761/2/4A, N7766/68A, N773xA and the N7711/4A) Input and Output Connectors Input and Output Connectors - Overview This section provides information on: •... -
Page 21: Front Panels - Tunable Laser Source
Getting Started Front Panels - Tunable Laser Source Figure 5 Front panel of the Keysight N7711A Single-Port Tunable Laser System Source Figure 6 Front panel of the Keysight N7714A Single-Port Tunable Laser System Source Rear Panel Figure 7 Rear panel of the Keysight N77xx Series instruments... -
Page 22: Making Optical Connections
You cannot connect angled non-contact fiber end connectors with orange sleeves N O T E directly to the laser. For further details on connector interfaces and accessories, refer to "Accessories - Overview" section, described in this manual. Keysight N77xx Series... -
Page 23: Optical Output
Getting Started Optical Output Polarization Maintaining Fiber A Polarization maintaining fiber (PMF) output is standard for Keysight N7711/4A tunable laser system sources. PMF is aligned to maintain the state of polarization. A well defined state of polarization helps ensure constant measurement conditions. The fiber is of Panda type, with TE mode in the slow axis in line with the connector key. -
Page 24: Lan Interface
Private networks can reduce the possibility of tests being disrupted by unplanned or unauthorized access. Code generation for test systems on a private network is often simplified, as provisions against unauthorized users may not be required. Keysight N77xx Series... -
Page 25: Performance
LAN network is required. In addition to supporting multiple users, site LANs often offer the advantage of being maintained by IT departments. When using a site LAN, consult your IT department regarding LAN configuration and security issues. Keysight N77xx Series... -
Page 26: Connecting The Lan Cable
For private LAN networks that include a switch or router, use standard LAN cables for all network connections. Do not use a crossover cable. Site Network Connections The following figure shows a typical LAN cable connection for a site network. Keysight N77xx Series... - Page 27 There may be a delay between making the LAN link (yellow status) and getting the IP address (green status). This delay may be longer if there is no DHCP server, for example when the instrument is connected directly to a PC. Keysight N77xx Series...
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Page 28: Gpib Interface
Pressing and holding the button for 3 seconds will reset the LAN parameters to the factory default. This includes changing the password for modifying the configuration via LAN back to the default "Keysight". This is equivalent to the following sequence of programming commands: :SYSTem:COMMunicate:ETHernet:RESet... -
Page 29: Gpib Logic Levels
Connector Part Number: 1251-0293 Figure 13 GPIB Connector Keysight Technologies products delivered now are equipped with connectors C A U T I O N having ISO metric-threaded lock screws and stud mounts (ISO M3.5×0.6) that are black in color. Earlier connectors may have lock screws and stud mounts with English-threaded lock screws and stud mounts (6-32 UNC) that have a shiny nickel finish. -
Page 30: Usb Interface
The GPIB line screens are not isolated from ground. N O T E USB Interface Before connecting the instrument over USB, install the Keysight I/O Libraries N O T E Suite, which is included on a CD with the instrument. -
Page 31: Connecting To The Instrument
Keysight N7751/2A Optical Attenuator and Power Meter, or an Keysight N7761/2/4/6/8A Optical Attenuator or an Keysight N7711/4A Tunable Laser System Source or an N773x Optical Switch. 1 If it is not already running, start the Keysight Connection Expert software. Keysight N77xx Series... - Page 32 Getting Started Figure 16 Keysight Connection Expert software 2 Attach the instrument to the USB. The first time you attach the instrument, follow the instructions on the screen to select the driver for this instrument. When the instrument is connected, it is shown in the list.
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Page 33: Finding The Ip Address Of An Instrument
1 Connect to the instrument over USB, as described above. 2 Select the instrument in the list. Figure 18 Select the instrument 3 Click on “Send commands to this instrument”. The default command is the *IDN? query. Figure 19 *IDN? query 4 Enter the command :SYSTem:COMMunicate:ETHernet:IPADdress:CURRent? Keysight N77xx Series... -
Page 34: Connecting Over Lan
LED on the front panel is green. See, “ LAN Interface” on page 23 more information to connecting over LAN. 2 If it is not already running, start the Keysight Connection Expert software. 3 Select “LAN (TCPIP0)” in the list. - Page 35 4 Click on “Add an instrument” in the Task Guide. 5 Wait for the scan to finish. 6 Select the instrument in the list. Figure 22 7 To show the description of the instrument, check the box for *IDN? query and click on "Find Again". Keysight N77xx Series...
- Page 36 8 Select the instrument in the list to see the associated tasks (in the Task Guide on the left) and information (on the right). • For the N774x Multiport power meters, click on the “Instrument Web Interface” button to control the instrument directly. Keysight N77xx Series...
- Page 37 Basic configuration and functionality are available from this web page. • You can control any of the instruments from the Keysight N77xx Viewer. – Connecting and using the N77xx Viewer is described in “Connecting to the Instrument - Overview” on page...
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Page 38: Claims And Repackaging
Return Shipments to Keysight Technologies If the instrument is to be shipped to an Keysight Technologies Sales/Service Office, attach a tag showing owner, return address, model number and full serial number and the type of service required. -
Page 39: N77Xx Viewer Common User Interface Functions
When you first launch the N77xx Viewer, it is not connected to any of your instruments. 1 Click on the “Connect” icon at the top right of the window. 2 Select the instrument to which you want to connect from the list. Figure 25 Connecting to an Instrument Keysight N77xx Series... - Page 40 3 The list shows instruments that have been given a VISA address. If your instrument is not in the list, 1 Use the Keysight Connection Expert to check your instrument has a VISA address 2 Click on the “Scan Again” button.
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Page 41: Viewing Measurements And Settings
Viewing the measurement on a single channel 1 Click on the “New” button to open a window with the current measurement and parameter settings. Figure 27 Viewing the measurement on a single channel attenuator/power meter (left) or tunable laser (right) Keysight N77xx Series... -
Page 42: Saving And Recalling Configurations
You can save the current measurement configuration to either of two settings stored on the instrument. 1 In the File menu, select Save. 2 Enter or select the setting to which you want to save it. Figure 29 Saving a configuration 3 Click on the “OK” button. Keysight N77xx Series... -
Page 43: Controlling The Instrument Refresh
This is useful if, for example, more than one person can control the instrument. 2 When you have set all the values, click on the “OK” button. Keysight N77xx Series... -
Page 44: Tunable Laser Source
Overview” on page 19. The most convenient way to control one or more lasers is using the Keysight N77xx Viewer, which is a control and display graphical user interface. The details for each port are shown in a separate tab that can also be opened in a separate window with the “New”... - Page 45 Figure 31 The N77xx viewer The Viewer is also available on CD and via download from the product webpage which you can access at http://www.keysight.com/find/jet. Then select the tab “Technical Support” followed by “Drivers & Software”. On this webpage you will also find additional software tools like: •...
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Page 46: Optical Output
Use the following selector to select the scale of the tuning display. This setting is for displaying purposes only and does not affect any internal states N O T E of the laser. Check the optical power The power display shows the optical power of the laser. Keysight N77xx Series... -
Page 47: Power Control
Pset control will change to a fixed “dBm” label. Whereas this setting does not change any physical state of the laser module it N O T E changes the internal power unit software state. For details see Programmers Guide. Keysight N77xx Series... -
Page 48: The Tuning Field
Grid mode on: Tuning will first clip your set value to the supported wavelength range. After tuning the value will be changed to wavelength that corresponds to the nearest frequency of the particularly set-up grid (see grid mode parameters). Keysight N77xx Series... - Page 49 Set the channel spacing frequency (grid tuning mode only) The Ch. Spacing control allows you to set the channel spacing frequency in GHz. Changing this value will modify the Channel No. control in a way that the laser frequency remains unchanged within the new grid. Keysight N77xx Series...
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Page 50: Modulation Control
GHz. The frequency modulation feature can be used for SBS suppression. This feature might not be supported by your tunable laser module. In this case the N O T E control is disabled and grayed-out. Keysight N77xx Series... - Page 51 If enabled the laser power/frequency can be modulated by the application of an external electrical signal to the modulation input connector. This feature might not be supported by your tunable laser module. In this case the N O T E control is disabled and grayed-out. Keysight N77xx Series...
- Page 52 Tunable Laser Source If supported, the type of modulation depends on your laser model. N O T E Keysight N77xx Series...
- Page 53 Tunable Laser Source Keysight N77xx Series...
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Page 54: Specifications And Regulations Compliance
The electrical noise spectrum of the photodetector current is measured with Keysight lightwave signal analyzer, and the linewidth is calculated from the heterodyne spectrum. Alternatively, Using a heterodyning technique: The output of the laser... - Page 55 Specifications and Regulations Compliance bandwidth photodetector. The electrical noise spectrum of the photodetector current is measured with Keysight Lightwave signal analyzer, and the linewidth is calculated from the heterodyne spectrum. (Lightwave signal analyzer settings: resolution bandwidth 1 MHz, video bandwidth 10 kHz, sweep time 20 ms, single scan).
- Page 56 Power flatness versus wavelength Specifies ± half the span (in dB) between the maximum and the minimum actual power levels of the tunable laser source when changing the wavelength. Keysight N77xx Series...
- Page 57 N O T E and power stability into account. Power stability Specifies the change of the power level of the tunable laser source over time, expressed as ± half the span (in dB) between the highest and lowest actual power. Keysight N77xx Series...
- Page 58 B, and the square of the average optical power P RIN, if expressed as “dB/Hz”, is calculated by: Conditions: As specified. Measurement: Using an Keysight Lightwave signal analyzer and bandwidth set to 3 MHz. Relative wavelength (frequency) accuracy When randomly changing the wavelength (frequency) of the tunable...
- Page 59 Conditions: Within a distance from 0.1 to 6 GHz to the signal's optical frequency. Measurement: Using the Keysight Lightwave signal analyzer, by analyzing the heterodyning between the main signal and the highest sidemode. Signal to source spontaneous emission ratio Specifies the ratio between signal power and maximum spontaneous emission (SSE) power.
- Page 60 TLS until the tuning operation has finished. Wavelength range The range of wavelengths for which the power meter is calibrated, or that can be set at the laser and for which the specifications apply (if not differently stated). Keysight N77xx Series...
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Page 61: Literature
Warm-up time Time after power-up of the acclimated instrument after which the specifications and characteristics apply. Literature 1 Fiber Optic Test and Measurement, Hewlett Packard Professional Books, edited by Prentice Hall, ISBN 0-13-534330-5 Keysight N77xx Series... -
Page 62: Technical Specification - Tunable Laser Sources
Specifications and Regulations Compliance Technical Specification - Tunable Laser Sources The following specifications apply to wavelengths on the 50 GHz ITU-T grid, after warm up. Keysight N77xx Series... - Page 63 Specifications and Regulations Compliance Keysight N77xx Series...
- Page 64 Specifications and Regulations Compliance Keysight N77xx Series...
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Page 65: Declarations Of Conformity
Specifications and Regulations Compliance Declaration of Conformity The latest version of the Declaration of Conformity can be found here http://www.keysight.com/go/conformity Keysight N77xx Series... -
Page 66: Regulations Information
You will always have the utmost confidence in your measurements. Keysight offers a wide range of additional expert test and measurement services for your equipment, including initial start- up assistance, onsite education and training, as well as design, system integration, and project management. -
Page 67: Keysight Direct
I/O and global support, which are combined to more easily integrate test system development. www.keysight.com/find/open LXI is the LAN-based successor to GPIB, providing faster, more efficient connectivity. Keysight is a founding member of the LXI consortium. www.lxistandard.org Keysight N77xx Series... -
Page 68: Www.keysight.com
Specifications and Regulations Compliance www.keysight.com For more information on Keysight Technologies products, applications and services, please contact your local Keysight office. The complete list is available at: www.keysight.com/find/contactus Keysight N77xx Series... - Page 69 Specifications and Regulations Compliance Keysight N77xx Series...
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Page 70: Accessories
Keysight N77xx Series User's Guide Accessories Accessories - Overview The instruments are available in various configurations for the best possible match to the most common applications. This chapter provides information on the available options and accessories. -
Page 71: Instrument And Options - Keysight N7711A, N7714A
Accessories Instrument and Options - Keysight N7711A, N7714A Keysight N77xx Series... -
Page 72: Cables
GPIB Adapter, 10834A, 2.3 cm extender. Use this adapter if there is no space to connect your GPIB cable directly to a GPIB interface. • USB Cable, 8121-1243, 2 m (6.6 feet) • Cross-over LAN cable, 5061-0701, 2.1 m (7 feet) Keysight N77xx Series... - Page 73 Accessories Keysight N77xx Series...
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Page 74: Maintenance And Troubleshooting
If you are unsure of the correct cleaning procedure for your optical device, we recommend that you first try cleaning a dummy or test device. Keysight Technologies assume no liability for the customer’s failure to comply with these requirements. - Page 75 Dust and other particles, however, can range from tenths to hundredths of microns in diameter. Their comparative size means that they can cover a part of the end of a fiber core, and as a result will reduce the performance of your system. Keysight N77xx Series...
- Page 76 • Compressed air Dust and shutter caps All of Keysight Technologies’ lightwave instruments are delivered with either laser shutter caps or dust caps on the lightwave adapter. Any cables come with covers to protect the cable ends from damage or contamination.
- Page 77 Maintenance and Troubleshooting If you need further dust caps, please contact your nearest Keysight Technologies sales office. Isopropyl alcohol This solvent is usually available from any local pharmaceutical supplier or chemist's shop. If you use isopropyl alcohol to clean your optical device, do not immediately dry the surface with compressed air (except when you are cleaning very sensitive optical devices).
- Page 78 When spraying compressed air, hold the can upright. If the can is held at a slant, propellant could escape and dirty your optical device. First spray into the air, as the initial stream of compressed air could contain Keysight N77xx Series...
- Page 79 An ultrasonic bath will gently remove fat and other stubborn dirt from your optical devices. This helps increase the life span of the optical devices. Only use isopropyl alcohol in your ultrasonic bath, as other solvents may damage. Keysight N77xx Series...
- Page 80 Take care never to look into the end of a fiber or any other optical component, when they are in use. This is because the laser can seriously damage your eyes. Keysight N77xx Series...
- Page 81 All of Keysight Technologies’ lightwave instruments and accessories are shipped with either laser shutter caps or dust caps. If you need additional or replacement dust caps, contact your nearest Keysight Technologies Sales/Service Office. Immersion Oil and Other Index Matching Compounds Where it is possible, do not use immersion oil or other index matching compounds with your device.
- Page 82 This depends on the degree of dirtiness, or the depth of the scratches. This is a difficult procedure and should only be performed by skilled personal, and as a last resort as it wears out your connector. Keysight N77xx Series...
- Page 83 1 Hold the tip of the connector in the bath for at least three minutes. 2 Take a new, dry soft-tissue and remove the alcohol, dissolved sediment and dust, by rubbing gently over the surface using a small circular movement. 3 Blow away any remaining lint with compressed air. Keysight N77xx Series...
- Page 84 They can deposit dissolved dirt in the groove, which can then dirty the surface of an inserted fiber. Preferred Procedure Use the following procedure on most occasions. 1 Blow away any dust or dirt with compressed air. Keysight N77xx Series...
- Page 85 The end of a fiber can often be scratched. You make a new cleave. To do this: 1 Strip off the cladding. 2 Take a new soft-tissue and moisten it with isopropyl alcohol. 3 Carefully clean the bare fiber with this tissue. Keysight N77xx Series...
- Page 86 Firmware Upgrades Updated versions of the firmware for your instrument may be released from time to time. These will then be available from the Keysight web page (www.keysight.com/find/octfirmware) and will include the update application and instructions.
- Page 87 Clearing User Data Clearing the DRAM All data in the DRAM is cleared by powering the instrument off. Clearing the Flash ROM The user data can be cleared from the Flash ROM by: Keysight N77xx Series...
- Page 88 VISA Assistant (for example over USB). Send the command: SYSTem:COMMunicate:ETHernet:RESet b With the instrument connected over the LAN (the LAN LED is green), press and hold the LAN Reset button for more than 3s. In either case, the instrument reboots. Keysight N77xx Series...
- Page 89 Maintenance and Troubleshooting Keysight N77xx Series...
- Page 90 Line Power Requirements, 11 accuracy, 57 DRAM, 86 Linewidth, 53 Safety, 9 EEPROM, 86 Maximum output power, 54 Safety Considerations, 7, 9 Electrical Connectors, 7, 22 Microscope, 78 Safety Information for Tunable Laser Modules, 11 Safety Symbols, 9 Keysight N77xx Series...
- Page 91 58 repeatability, 60 Standard Cleaning Equipment, 75 Wavelength (frequency) stability, 60 Storage conditions, 59 Wavelength range, 59 Straight contact connectors, 21 Wavelength resolution, 60 Ultrasonic baths, 78 USB Interface, 7 Technical Specification - Tunable Laser Sources, 61 Keysight N77xx Series...
- Page 93 This information is subject to change without notice. © Keysight Technologies 2015 Edition 3.0, January 2015 www.keysight.com...