Related Manuals for Keysight N777-C Series
Summary of Contents for Keysight N777-C Series
- Page 1 Keysight N777-C Series Tunable Laser Family N7776C Tunable Laser Source N7778C Tunable Laser Source N7779C Tunable Laser Source User’s Guide...
- Page 2 HEREIN, INCLUDING BUT NOT LIMITED TO http://www.keysight.com/find/sweula. THE IMPLIED WARRANTIES OF The license set forth in the EULA represents MERCHANTABILITY AND FITNESS FOR A the exclusive authority by which the U.S. PARTICULAR PURPOSE. KEYSIGHT SHALL Keysight N777-C Series Tunable Laser Family User’s Guide...
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Page 3: Safety Summary
Failure to comply with these precautions or with specific warnings or operating instructions in the product manuals violates safety standards of design, manufacture, and intended use of the instrument. Keysight Technologies assumes no liability for the customer's failure to comply with these requirements. Product manuals are provided on the Web. -
Page 4: Instrument Markings
Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 5: South Korean Class A Emc Declaration
Declaration of Conformity Declarations of Conformity for this product and for the Keysight products may be downloaded from the Web. Go to http://www.keysight.com/go/conformity. You can then search by product number to find the latest Declaration of Conformity. -
Page 7: Table Of Contents
Handling the Instrument Storage and Shipment Carrying the Instrument Rack Mount the Instrument Obtaining Source Code 2 Getting Started Initial Inspection Initial Inspection Claims and Repackaging Return Shipments to Keysight Technologies Deleting User Data Keysight N777-C Series Tunable Laser Family User’s Guide... - Page 8 3 Definition of Terms Definition of Terms General Definitions Absolute wavelength accuracy (continuous sweep mode) Absolute wavelength accuracy (stepped mode) Dynamic power reproducibility (continuous sweep mode) Dynamic relative power flatness (continuous sweep mode) Effective linewidth Keysight N777-C Series Tunable Laser Family User’s Guide...
- Page 9 How to set Wavelength? How to Set Power? How to Perform a Wavelength Sweep? How to Use Triggers? How to set Modulation? How to Lock/Unlock the Instrument? How to Turn ON/OFF the Laser? Keysight N777-C Series Tunable Laser Family User’s Guide...
- Page 10 How to Perform a Wavelength Sweep? How to Use Triggers? How to set Modulation? How to Lock/Unlock the Instrument? How to Turn ON/OFF the Laser Output? How to Get Current Instrument Settings? How to Configure LAN? Keysight N777-C Series Tunable Laser Family User’s Guide...
- Page 11 Cleaning Instructions Safety Precautions Why is it important to clean optical devices? What materials do I need for proper cleaning? General Cleaning Procedure Further Cleaning Information Firmware Upgrades Requirements Contact Keysight Technologies Keysight N777-C Series Tunable Laser Family User’s Guide...
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Page 13: General Operating Considerations
Keysight N777-C Series Tunable Laser Family User’s Guide General Operating Considerations / 14 Overview / 15 Laser Safety Information / 18 Operating Environment / 20 Handling the Instrument / 22 Obtaining Source Code... -
Page 14: Overview
Keysight Technologies assumes no liability for the customer’s failure to comply with these requirements. Ensure the proper usage for the instrument. The protection provided WARNING by the instrument may be impaired. -
Page 15: Laser Safety Information
163 – 500 mW 55 – 500 mW power * Max. CW output power is defined as the highest possible optical power that the laser source can produce at its output connector. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 16: Laser Safety Labels
The laser instrument has a built-in safety circuitry which will disable the optical output in the case of a fault condition. Refer servicing only to qualified and authorized personnel. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 17: Laser Safety Symbols
The apparatus will be marked with this symbol when it is necessary for the user to refer to the instruction manual in order to protect the apparatus against damage. Hazardous laser radiation. Invisible laser radiation. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 18: Operating Environment
The instrument should not be operated when resting on its rear or side panels. Figure 2 shows the correct operating position of Keysight N777-C instrument. Keysight N777-C Series Tunable Laser Family User’s Guide... - Page 19 General Operating Considerations 75 mm (3 inches) 25 mm 25 mm (1 inch) (1 inch) Figure 2 Operating Position of the Instrument Keysight N777-C Series Tunable Laser Family User’s Guide...
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Page 20: Handling The Instrument
D01, touchscreen display). Protect the laser from temperature extremes that may cause condensation within it. The Keysight N777-C Tunable Laser System can be stored either in its operating position or on its back legs. The back legs protect the connectors on the back panel from damage. - Page 21 General Operating Considerations To rack mount a single instrument, order adapter kit N7799C-2CM. Figure 4 shows an example where an instrument is mounted on a rack: Figure 4 Instrument Mounted on a Rack Keysight N777-C Series Tunable Laser Family User’s Guide...
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Page 22: Obtaining Source Code
This product uses open source packages. To the extent required by the applicable open source license(s), Keysight makes source code available upon request. To request source code, please contact Keysight Support at www.keysight.com/main/support.jspx. Third party software acknowledgments and licenses for the N777-C series with the embedded Linux operating system are located at: www.keysight.com/find/N7776C... -
Page 23: Getting Started
Keysight N777-C Series Tunable Laser Family User’s Guide Getting Started / 24 Initial Inspection / 26 Power Supply Requirements / 28 N777-C Series of Tunable Laser Family / 30 N777-C Front and Rear Panel / 34 LAN Interface / 36... -
Page 24: Initial Inspection
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 25: Deleting User Data
• Mark shipping container FRAGILE to encourage careful handling. • In any correspondence with Keysight, refer to the instrument by model number and serial number. Deleting User Data If you need to delete all your logged data and user configurations, press and hold the LAN Reset button (approx. -
Page 26: Power Supply Requirements
The power switch allows you to switch between stand-by mode and power-on mode. Figure 5 Power LED on the Front Panel of the Instrument Keysight N777-C Series Tunable Laser Family User’s Guide... - Page 27 When the instrument is in stand-by mode, the Power LED is orange. When the instrument is powered-on, the Power LED is green. The AC power requirements are summarized on the rear panel of the instrument. Figure 6 AC Power Requirement Markings Keysight N777-C Series Tunable Laser Family User’s Guide...
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Page 28: N777-C Series Of Tunable Laser Family
The Keysight N7776C Top-Line Tunable Laser Source The new Keysight N7776C top line tunable laser source is designed to reach best-in-class accuracy and sub-picometer repeatability in static and swept operation for outstanding test efficiency. -
Page 29: The Keysight N7779C Basic Line Step-Tunable Laser Source
The N777-C option 114 covers the wavelength range from 1340 nm to 1495 nm. Combined with the other options, this allows measurements over all CWDM channels, such as for CWDM8 devices. Components for Raman amplification also use this wavelength range. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 30: N777-C Front And Rear Panel
This section provides information on the front and rear panels of the N777-C Series Tunable Laser Source. Figure 7 shows the front panel of the N777-C Series Tunable Laser Source with the optional display unit (Option D01): Figure 7 Front Panel of the N777-C Instrument with Display... -
Page 31: Input/Output Signals
Rear Panel of the N777-C Instrument Input/Output Signals Front Panel: CAUTION There is one BNC input connector on the front panel of the Keysight N777-C. An absolute maximum of ±5 V can be applied as an external voltage to the BNC connector. -
Page 32: Optical Output
Figure 10 PMF Output Connector Angled Contact Connectors The N777-C Series Tunable Laser instruments are outfitted with an angled polished connector. Angled contact connectors help you to control return loss. With angled fiber end-faces, reflected light tends to reflect into the cladding, reducing the amount of light that reflects back to the source. - Page 33 You cannot connect angled non-contact fiber end connectors with NOTE orange sleeves directly to the instrument. Keysight N777-C Series Tunable Laser Family User’s Guide...
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Page 34: Lan Interface
Pressing and holding the button for 5 seconds will reset the LAN parameters to the factory default. This includes removing the password. This is equivalent to the following sequence of programming command: :SYSTem:COMMunicate:ETHernet:RESet Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 35: Usb Interface
Getting Started USB Interface It is recommended to use the Keysight IO Libraries Suite to enable NOTE instrument communication for a variety of development environments. It is available at: http://keysight.com/find/iolibs The instrument is a USB device, with a USB Type-B connector which is available on the rear side of the instrument. -
Page 36: Powering Up The Instrument
When you power on the instrument, the LEDs on the front panel show the various stages of the instrument. Power Status Yellow Standby mode Searching for LAN Warming Up Green Connected with LAN Blinking Green Communicating over LAN / USB Not connected Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 37: Connecting The Instrument
Double-click on this new drive. It will show a shortcut to start the user interface. Double -click on this shortcut. This will open the user interface of the instrument in a browser. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 38: Connecting Over Lan
Make sure the instrument is connected to the LAN, and that the LAN LED on the front panel is green. If it is not already running, start the Keysight Connection Expert software. The Discovery Service automatically discovers LAN instruments on the same subnet as the PC on which the service is running. - Page 39 Click the Enter Address tab. c Enter the LAN address or host name and select the protocol used to communicate with the instrument. Supported protocols are VXI-11 and Socket. d Click OK. Keysight N777-C Series Tunable Laser Family User’s Guide...
- Page 40 Getting Started Linux or macOS can use the zeroconf / mdns discovery service with tools like Avahi (GNU/Linux) or Bonjour (Mac). Keysight N777-C Series Tunable Laser Family User’s Guide...
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Page 41: N777-C User Interface
Getting Started N777-C User Interface Keysight offers the N777-C Tunable Laser Source instruments with an optional display. Figure 12 shows the user interface accessed in the instrument’s display: Figure 12 N777-C Instrument User Interface For details on the interface and how to access and use it, see Chapter , “N777-C Instrument’s Front Panel Display,”... - Page 42 Figure 13 N777-C Web Interface For details on the web interface and how to use it, see Chapter , “N777-C Web Interface Reference,” on page 59. Keysight N777-C Series Tunable Laser Family User’s Guide...
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Page 43: Definition Of Terms
Keysight N777-C Series Tunable Laser Family User’s Guide Definition of Terms / 44 General Definitions / 45 Absolute wavelength accuracy (continuous sweep mode) / 45 Absolute wavelength accuracy (stepped mode) / 45 Dynamic power reproducibility (continuous sweep mode) / 46... -
Page 44: Definition Of Terms
(given by start wavelength, end wavelength and sweep speed). During a continuous “ “ sweep the dynamic specifications and the Logged wavelength apply. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 45: Absolute Wavelength Accuracy (Continuous Sweep Mode)
Specifies the random uncertainty in reproducing the output power at the same actual wavelength in different sweeps. It is expressed as ± half the span between the maximum and minimum of all actual output powers. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 46: Dynamic Relative Power Flatness (Continuous Sweep Mode)
Lightwave signal analyzer, and the line-width calculated from the heterodyne spectrum. (Lightwave signal analyzer settings: resolution bandwidth 1 MHz, video bandwidth 10 kHz, sweep time 20 ms, single scan). Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 47: Linewidth
The electrical noise spectrum of the photo-detector current is measured using a Lightwave signal analyzer or Keysight Optical Modulation Analyzer, and the linewidth calculated from the heterodyne spectrum. -
Page 48: Mode-Hop Free Tunability
Using a polarization analyzer at the end of a polarization-maintaining patchcord, by sweeping the wavelength to create circular traces on the Poincaré sphere. Calculate the polarization extinction ratio from the diameters of these circles. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 49: Power Flatness Versus Wavelength
Figure 18 Power flatness vs. wavelength. Conditions: Uninterrupted tunable laser source output power, constant power setting, constant temperature. Other conditions as specified. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 50: Power Linearity
Uninterrupted tunable laser source output power, constant wavelength setting, constant temperature. Other conditions as specified. The long-term power repeatability can be obtained by taking the power NOTE repeatability and power stability into account. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 51: Power Stability
Specifies the ratio between the mean-square of the optical power Δ fluctuation amplitude within a specified frequency range f and for bandwidth B, and the square of the average optical power P RIN, if expressed as "dB/Hz", is calculated by: Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 52: Relative Wavelength Accuracy (Continuous Sweep Mode)
When randomly changing the wavelength and measuring the differences between the displayed and the actual wavelength, the relative wavelength accuracy is ± half the span between the maximum and the minimum value of all differences. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 53: Return Loss
Conditions: Tunable laser source output off. Side-mode suppression ratio The ratio of optical power in the main mode to the optical power of the highest sidemode, expressed in dB: Conditions: As specified. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 54: Signal To Source Spontaneous Emission (Sse) Ratio
1 nm bandwidth. For the low-SSE output, if applicable, with a fiber Bragg grating inserted between the tunable laser source and the OSA to suppress the signal, thereby enhancing the dynamic range of the OSA. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 55: Signal To Total Source Spontaneous Emission Ratio
The random uncertainty of the nominal wavelength of the tunable laser source at any fixed actual wavelength in repeated sweeps. The nominal wavelength of the tunable laser source is derived from the (discrete) Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 56: Wavelength Repeatability (Stepped Mode)
Using a wavelength meter, averaging time 1 s. The wavelength repeatability of the low-SSE output (if applicable) is the NOTE same as the wavelength repeatability of the high power output (guaranteed by design). Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 57: Wavelength Resolution
Time span as specified, uninterrupted tunable laser source output power, constant wavelength and power level settings, constant temperature. Other conditions as specified. ≥ Measurement: Using a wavelength meter, averaging time 1 s. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 59: N777-C Web Interface Reference
Keysight N777-C Series Tunable Laser Family User’s Guide N777-C Web Interface Reference / 60 N777-C Web Interface / 62 Controlling N777-C Instruments / 74 How to Use Auxiliary Functions... -
Page 60: N777-C Web Interface
Get Image – This tab allows you to capture a screen of the Control Instrument window. The image is saved in PNG format in your PC. For details, see How to Capture an Image of the Graph? on page 75. Keysight N777-C Series Tunable Laser Family User’s Guide... - Page 61 LAN configuration. For details, refer to How to Configure LAN? on page 80. • Help – This tab opens the instrument help. Keysight N777-C Series Tunable Laser Family User’s Guide...
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Page 62: Controlling N777-C Instruments
Control Instrument Tab The Control Instrument tab is used to control the N777-C instruments: The Control Instrument tab provides the following features: Display Wavelength and Power Displays the instrument’s current wavelength and power. Keysight N777-C Series Tunable Laser Family User’s Guide... - Page 63 Wavelength Vs. Power Graph The Control Instrument tab displays a graph that shows the relationship between the wavelength and power. The power is represented by x axis while the Y axis represents the wavelength. Keysight N777-C Series Tunable Laser Family User’s Guide...
- Page 64 You are allowed to set multiple markers. Hovering the cursor over the marker causes the wavelength and power display. To save the marker, click on the Save Current Markers option. To remove all saved markers, click on the Remove All Marker option. Keysight N777-C Series Tunable Laser Family User’s Guide...
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Page 65: How To Set Wavelength
Watts (W) are the SI unit for power measurement. You can also measure power in dBm. Values displayed in these units are derived from measurement in Watts. By selecting dBm, the following calculation is made: Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 66: How To Perform A Wavelength Sweep
A wavelength sweep is performed when the instrument changes the optical wavelength of the optical output across a user-defined wavelength range. You can use a wavelength sweep to measure the wavelength-dependent loss of an optical component. Keysight N777-C Series Tunable Laser Family User’s Guide... - Page 67 Sweep Stop - the wavelength at which the sweep ends, • Sweep Step - the size of the change in the wavelength for each step of a sweep, • Run/Stop Sweep - to run and start the sweep. Keysight N777-C Series Tunable Laser Family User’s Guide...
- Page 68 Select Oneway, if you want to start every sweep cycle at [λ Start] and to end every sweep cycle at [λ Stop]. Figure 28 illustrates how these modes work for a three-cycle wavelength sweep. Keysight N777-C Series Tunable Laser Family User’s Guide...
- Page 69 NOTE Tunable Laser front panel, while a wavelength sweep is running. You can press Stop and, then, press the Active hardkey on the Tunable Laser front panel, to turn off the laser. Keysight N777-C Series Tunable Laser Family User’s Guide...
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Page 70: How To Use Triggers
Input Trigger Connector. A maximum of 5 V can be applied as an external voltage to the Input CAUTION Trigger connector. Do not apply an external voltage to these connectors. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 71: How To Set Modulation
If you choose Step Finished and a Continuous sweep, the wavelength NOTE interval between hardware triggers is set by the Step parameter, although, the sweep is not stepped. How to set Modulation? Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 72: How To Lock/Unlock The Instrument
This helps in avoiding accidents that are caused due to laser. To lock a device; On the Control Instrument page, click to Settings > Measurement Settings and then go to Device Locked option. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 73: How To Turn On/Off The Laser
Click on the Shutter Open button the turn ON/OFF the high-power laser. Ensure that your device is unlocked. Additionally, you can also click on the Laser ON/OFF button available on the Control Instrument page. Laser OFF Laser ON Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 74: How To Use Auxiliary Functions
• LAN Details – Displays LAN configuration details of the current instrument. Please note that the Home tab does not allow the user to change the NOTE displayed instrument settings. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 75: How To Identity A Particular Instrument
You can only capture the screen if you are in the Control Instrument tab. NOTE How to Save/Recall the Web Interface Settings? The Save/Recall tab on the N777-C web interface allows you to save and recall the web interface settings. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 76: Logging In/Out Of The N777-C Web Interface
Change Password button. For details, see How to Create/Change the Password? on page 77. To log out the N777-C web interface, click on Log out icon available on the top right of the web interface. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 77: How To Create/Change The Password
To get the specified performance, ensure that the warm-up time has NOTE passed before starting realignment. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 78: Lambda Zeroing
It is advisable to run this after warm-up. Also, periodic use, perhaps daily, during continuous operation or if sweeps are missing points is recommended. To perform a wavelength zero: Go to Settings and click Lambda Zeroing. The following Lambda Zeroing dialog will appear: Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 79: Update Rate
To perform an update rate: Go to Settings and click Update Rate. An Update Rate dialog will appear: Enter the new refresh rates in milliseconds for the instrument settings and arrow. Click on Save button. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 80: Reboot Device
The Configure LAN tab on the N777-C web interface displays the currently used LAN settings. It display the following networking parameters: • IP address configuration • IP address • Subnet mask • Default gateway Keysight N777-C Series Tunable Laser Family User’s Guide... - Page 81 Your connection to the instrument may be broken after executing either WARNING of the operations below. If so, reconnect to the instrument using the new hostname or IP address. Keysight N777-C Series Tunable Laser Family User’s Guide...
- Page 82 The Configure LAN tab also allows you to reset all LAN parameters to the factory default. To do so; Click the Advance Options button available on Configure LAN tab. The Advance Network Options page will appear. Keysight N777-C Series Tunable Laser Family User’s Guide...
- Page 83 Click on the Reset button to reset all LAN parameters to the factory default. Your browser connection to the instrument may be broken after WARNING executing the reset network configuration operation. If so, reconnect to the instrument using the new hostname or IP address. Keysight N777-C Series Tunable Laser Family User’s Guide...
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Page 85: N777-C Instrument's Front Panel Display
Keysight N777-C Series Tunable Laser Family User’s Guide N777-C Instrument’s Front Panel Display / 86 N777-C Instrument’s Front Panel Display / 88 Controlling N777-C Instruments... -
Page 86: N777-C Instrument's Front Panel Display
For details, refer to Controlling N777-C Instruments on page 88. More This button opens More Information window which displays the instrument How to Get Current Instrument INFORMATION settings. For details, refer Settings? on page 101 Keysight N777-C Series Tunable Laser Family User’s Guide... - Page 87 LAN configuration and allows you to edit the current LAN configuration. For How to Configure LAN? details, refer to on page 103 Help This button opens the instrument’s help. Home This button navigates you to the home screen (the default screen). Keysight N777-C Series Tunable Laser Family User’s Guide...
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Page 88: Controlling N777-C Instruments
Controlling N777-C Instruments Control Instrument Window To access the instrument settings and to manually control the instrument, click Control Instrument present on the user interface. The following Control Instrument window will appear: Keysight N777-C Series Tunable Laser Family User’s Guide... - Page 89 Allows you to change the instrument’s current wavelength, power and their respective units. The procedure for changing wavelength, power and their units are similar. The following example provides steps to change the wavelength and its unit. Keysight N777-C Series Tunable Laser Family User’s Guide...
- Page 90 The white curve on the graph denotes the maximum power curve. Setting an output power above the maximum power curve is indicated with EXP on the power display. For details, see How to Avoid Excessive Power? page 93 Keysight N777-C Series Tunable Laser Family User’s Guide...
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Page 91: How To Set Wavelength
Every Tunable Laser instrument has a permitted wavelength range. This range is greater than the specified range. The permitted wavelength range varies for each Tunable Laser instrument. You can set the wavelength to any value within the permitted wavelength range. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 92: How To Set Power
Watts. input Power, in units of dBm, is measured relative to 1 mW, it is an absolute power measurement. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 93: How To Perform A Wavelength Sweep
You can use a wavelength sweep to measure the wavelength-dependent loss of an optical component. How to Set the Wavelength Sweep? The wavelength sweep can be set up through the Sweep VIEW tab. Keysight N777-C Series Tunable Laser Family User’s Guide... - Page 94 Run/Stop Sweep - to run and start the sweep. For a Continuous sweep, Step sets the wavelength interval between NOTE output triggers, if you have set Output Trigger Mode to Step Finished, on page 99. How to Use Output Triggering Keysight N777-C Series Tunable Laser Family User’s Guide...
- Page 95 Select Oneway, if you want to start every sweep cycle at [λ Start] and to end every sweep cycle at [λ Stop]. Figure 31 illustrates how these modes work for a three-cycle wavelength sweep. Figure 31 Repeat Modes Keysight N777-C Series Tunable Laser Family User’s Guide...
- Page 96 Tunable Laser front panel, while a wavelength sweep is running. You can press Stop Sweep and, then, press the Active hardkey on the Tunable Laser front panel, to turn off the laser. Keysight N777-C Series Tunable Laser Family User’s Guide...
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Page 97: How To Use Triggers
The trigger level at the external trigger connectors is by default active high, this means when a trigger rises above the high TTL level (rising edge), a trigger is accepted. You can use the Trigger Config drop-down menu to select the triggering mode. Keysight N777-C Series Tunable Laser Family User’s Guide... - Page 98 Ignore, input triggers are ignored. • Next Step, an input trigger will cause the next step of a stepped sweep to be performed. • Run Sweep, an input trigger will start a single sweep cycle. Keysight N777-C Series Tunable Laser Family User’s Guide...
- Page 99 Sweep Started, a trigger is output after a sweep cycle starts. If you choose Step Finished and a Continuous sweep, the wavelength NOTE interval between hardware triggers is set by the Step parameter, although, the sweep is not stepped. Keysight N777-C Series Tunable Laser Family User’s Guide...
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Page 100: How To Set Modulation
BNC connector on the front panel of your Tunable Laser instrument.This enables you to fine tune the output wavelength within a limited wavelength range. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 101: How To Lock/Unlock The Instrument
How to Get Current Instrument Settings? You can get the currently used LAN settings through the More INFORMATION window. To open this window, click on the More INFORMATION button available on the N777-C user interface. Keysight N777-C Series Tunable Laser Family User’s Guide... - Page 102 • VISA Instrument Address – Displays VISA instrument addresses of the current instrument. • LAN Details – Displays LAN configuration details of the current instrument. Keysight N777-C Series Tunable Laser Family User’s Guide...
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Page 103: How To Configure Lan
The Configure LAN window displays the currently used LAN settings. It display the following networking parameters: • IP address configuration • IP address • Subnet mask • Default gateway • DNS server(s) • Hostname • Domain Keysight N777-C Series Tunable Laser Family User’s Guide... - Page 104 • Enter the descriptions for the following LAN configuration parameters: • IP Address • Subnet Mask • Default Gateway • Once done, click Apply Changes button for these settings to take effect. Keysight N777-C Series Tunable Laser Family User’s Guide...
- Page 105 This process might take up to 30 seconds for the changes to take effect. NOTE Your browser connection to the instrument may be broken after WARNING executing the reset network configuration operation. If so, reconnect to the instrument using the new hostname or IP address. Keysight N777-C Series Tunable Laser Family User’s Guide...
- Page 107 Keysight N777-C Series Tunable Laser Family User’s Guide Maintenance / 108 Cleaning Instructions / 112 Further Cleaning Information / 113 Firmware Upgrades / 114 Contact Keysight Technologies...
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Page 108: Maintenance
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. Safety Precautions Please follow the following safety rules: •... -
Page 109: What Materials Do I Need For Proper Cleaning
• 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. All cables come with covers to protect the cable ends from damage or contamination. - Page 110 Use only clean, fresh soft tissues and never apply them twice. Any dust and dirt from the air which collects on your tissue, or which has gathered after initial cleaning, may scratch and pollute your optical device. Keysight N777-C Series Tunable Laser Family User’s Guide...
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Page 111: General Cleaning Procedure
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. Blow away any remaining lint with compressed air. Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 112: Further Cleaning Information
Maintenance Further Cleaning Information For further information on cleaning and safety matters for optical devices, refer the following document: https://literature.cdn.keysight.com/litweb/pdf/5989-4473EN.pdf Keysight N777-C Series Tunable Laser Family User’s Guide... -
Page 113: Firmware Upgrades
Updating the firmware will not affect your annual instrument calibration. NOTE Requirements To upgrade firmware for the N777-C series tunable laser instruments, you require a PC, running Windows 10 on it. To update the firmware you need to download the current firmware which consist of two components: •... -
Page 114: Contact Keysight Technologies
Check the firmware version. Go to instrument’s user interface Home tab and check for the firmware version. Contact Keysight Technologies To locate a sales or service office near you, go to www.keysight.com/find/contactus. Keysight N777-C Series Tunable Laser Family User’s Guide... - Page 116 This information is subject to change without notice. © Keysight Technologies 2021 Edition 2.1, February 2021 www.keysight.com...