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Keysight N774-C & 8162-C Series User’s Guide

Getting Started

Connecting the Instrument

Connecting over USB

1 Power on the instrument.
2 Connect the PC to the instrument using a USB 2.0 Type A Male to

Type B Male cable.

3 The operating system will detect and display the new instrument as a

new drive and Network Adapter.

4 Double-click on this new drive. It will show a shortcut to start the user

interface.

5 Double -click on this shortcut. This will open the user interface of the

instrument in a browser.

Содержание 8162-C Series

Страница 1: ...Keysight N774 C 8162 C Series N7742C N7743C N7744C N7745C Optical Power Meter N7747C N7748C Optical High Performance Power Meter N7749C Optical Head Interface 81620C 81623C 81624C 81626C 81628C Optica...

Страница 2: ...ent require ments beyond those set forth in the EULA shall apply except to the extent that those terms rights or licenses are explicitly required from all providers of commercial computer software pur...

Страница 3: ...specifications tables for the AC mains voltage requirements and ambient operating temperature range Temperature The instrument should be protected from temperature extremes and changes in temperature...

Страница 4: ...fumes Do Not Remove the Instrument Cover Operating personnel must not remove instrument covers Component replacement and internal adjustments must be made only by qualified personnel Instruments that...

Страница 5: ...of the Australian Communications and Media Authority This symbol is a South Korean Class A EMC Declaration with the product identification code R Identification of authorization prefix R Identificatio...

Страница 6: ...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 Safety Symbol Description This product compl...

Страница 7: ...l Information 14 Operating Environment 15 Handling the Instrument 17 Storage Carrying and Shipment 17 Rack Mount the Instrument 17 Obtaining Source Code 19 2 Getting Started N774 C and 8162 C Series I...

Страница 8: ...chnologies 33 Power Supply Requirements 35 Line Power Requirements 35 Optical Connections 37 Optical Head Adapters 37 Quad Adapter Connections 42 8100xXI Optical Module Connector Interfaces 44 Exchang...

Страница 9: ...ed Temperature 61 Ambient Temperature Range 61 Applicable fiber type 61 Averaging time 62 Constant operating conditions 62 Data logging capability 62 Drift dark 62 Dynamic range logging mode 63 Freque...

Страница 10: ...ing N774 C Instruments 74 Control Instrument Tab 74 How to Measure Power 78 How to Set the Wavelength 79 How to Set the Calibration Offset 79 How to Set the Reference Level 80 How to Remove Electrical...

Страница 11: ...Rate and Data Points 91 Reboot Device 92 How to Configure LAN 93 5 Accessories 6 Maintenance Cleaning Instructions 102 Safety Precautions 102 Why is it important to clean optical devices 102 What mat...

Страница 12: ......

Страница 13: ...Keysight N774 C 8162 C Series User s Guide 1 General Operating Considerations General Information 14 Operating Environment 15 Handling the Instrument 17 Obtaining Source Code 19...

Страница 14: ...nect the power cord either at the rear power inlet or at the AC line power source receptacle One of these must always be accessible If the instrument is in a cabinet it must be disconnected from the l...

Страница 15: ...culate through it freely Operating Position When operating the instrument choose a location that provides at least 75 mm 3 inches of clearance at the rear and at least 25 mm 1 inch of clearance at eac...

Страница 16: ...16 Keysight N774 C 8162 C Series User s Guide 1 General Operating Considerations Figure 1 Operating Position of the Instrument 25 mm 1 inch 25 mm 1 inch 75 mm 3 inches...

Страница 17: ...the instrument in a standard 19 inch rack cabinet using one of two optional kits each of which includes instructions and mounting hardware Depending on whether one or two N774 C instruments are to be...

Страница 18: ...18 Keysight N774 C 8162 C Series User s Guide 1 General Operating Considerations Figure 2 Instrument s Mounted on a Rack A Single Instrument Mounted on a Rack B Two Instruments Mounted on a Rack...

Страница 19: ...ent 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 Thir...

Страница 20: ......

Страница 21: ...struments 22 N774 C Series Instrument s Front and Rear Panels 27 Initial Inspection 33 Power Supply Requirements 35 Optical Connections 37 Electrical Connectors 45 Remote Interface 48 Remote Interface...

Страница 22: ...ignment applications that require an analog feedback signal the voltage on each channel s analog output port provides a linear or logarithmic representation of the optical power level Both N7742C and...

Страница 23: ...ther optimized for high measurement throughput when characterizing optical multiport components for example multiplexers PON splitters wavelength selective switches WSS and ROADMs as well as for simul...

Страница 24: ...ruments combine the optical performance of the 81634B sensor modules with the large memory fast data transfer and small footprint of the N774 C series platform Eight high sensitivity optical power met...

Страница 25: ...628C optical heads and their special calibration variants An upcoming firmware version will add support for the previous generation optical heads 81620B 81623B 81624B 81626B and 81628B Please note tha...

Страница 26: ...C optical power heads Low relative uncertainty reduces the impact of connectorizing and fiber handling and leads to a robust test setup The 5 mm large area detector is less susceptible for connector m...

Страница 27: ...N774 C Series Instrument s Front and Rear Panels This section provides information on the front panel of N774 C multiport power meters N7742C Power Meter Figure 3 Front panel of the N7742C 2 port pow...

Страница 28: ...28 Keysight N774 C 8162 C Series User s Guide 2 Getting Started N7743C Power Meter Figure 5 Front panel of the N7743C 2 port power meter Figure 6 Front panel of the N7743C 4 port power meter...

Страница 29: ...ght N774 C 8162 C Series User s Guide 29 Getting Started 2 N7744C Power Meter Figure 7 Front panel of the N7744C 4 port power meter N7745C Power Meter Figure 8 Front panel of the N7745C 8 port power m...

Страница 30: ...774 C 8162 C Series User s Guide 2 Getting Started N7747C Power Meter Figure 9 Front panel of the N7747C 2 port optical power meter N7748C Power Meter Figure 10 Front panel of the N7748C 4 port optica...

Страница 31: ...C 8162 C Series User s Guide 31 Getting Started 2 N7749C Optical Head Interface Figure 11 Front panel of the N7749C 2 port optical head interface Figure 12 Front panel of the N7749C 4 port optical he...

Страница 32: ...32 Keysight N774 C 8162 C Series User s Guide 2 Getting Started N774 C Series Instrument s Rear Panel Figure 13 Rear panel of the N774 C series instruments...

Страница 33: ...or settlement of the claim against the carrier Return Shipments to Keysight Technologies If the instrument is to be shipped to the Keysight Technologies Sales Service Office attach a tag showing owner...

Страница 34: ...C 8162 C Series User s Guide 2 Getting Started Seal shipping container securely Mark shipping container FRAGILE to encourage careful handling In any correspondence refer to instrument by model number...

Страница 35: ...power cable When connected to an appropriate AC power receptacle this cable earths the instrument cabinet The power switch allows you to switch between stand by mode and power on mode Figure 14 Power...

Страница 36: ...ting Started 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...

Страница 37: ...e or multi mode fiber or the power applied in an open parallel beam with max 5 mm diameter The wavelength and power range depends on the sensor element Figure 16 Rear view of an Optical Head with Anal...

Страница 38: ...a laser to aid positioning the system for fiber alignment tasks to monitor optical power on an oscilloscope The analog signal reacts instantaneously to the input signal Optical Input The optical inpu...

Страница 39: ...optical power up to 40 dBm however operation above 38 dBm is at the operators own risk Attaching the Heat Sink to the 81628C Optical Head Applicable Adapters Keysight adapters types 81000xx 81000BT a...

Страница 40: ...in Figure 18 Figure 18 Attaching the Rubber Ring 2 The heat sink consists of two conical metal parts the bottom part smallest diameter at the bottom and the top part largest diameter at top Slide the...

Страница 41: ...Sink 3 Attach the upper part of the heat sink to the integrating sphere Slide the upper part over the connector adapter with the largest diameter facing opposite to the sphere Tighten the screws with...

Страница 42: ...ION When using bare fiber connections to power meters the length of fiber extending from the fiber holder must be carefully adjusted to avoid scratching the power meter optics NOTE Before you attach a...

Страница 43: ...until it clicks securely into place without pressing the release levers Removing Quad adapter Interfaces from the Power Meter Figure 22 Removing Quad Adapter Interface 1 Press the release levers on bo...

Страница 44: ...urled outer ring of the screw on interface differentiates the new adapter from the current adapters that are equipped with a metal sleeve Metallic sleeves have been considered the most abuse forgiving...

Страница 45: ...corresponds to the nominal value of the current range like 100 W in the 10 dBm range and 0 V corresponds to zero signal For logarithmic output the voltage represents the optical power independent of t...

Страница 46: ...f the optical head It outputs a voltage directly proportional to the strength of the optical signal at the optical input in the current range The analog voltage is always in the range between 0 and 2...

Страница 47: ...p the Instrument When you power on the instrument the LEDs on the front panel show the various stages of the instrument Power LAN Status Yellow Standby mode Searching for LAN Warming Up Green ON Conne...

Страница 48: ...tomatically obtain an IP address from the network using a DHCP server DHCP is set On The DHCP server will register the instrument s hostname with the dynamic DNS server The hostname as well as the IP...

Страница 49: ...will automatically choose an IP address using auto IP if a DHCP server is not present Each assigns itself an IP address from the block 169 254 nnn Note that this may take up to one minute The front pa...

Страница 50: ...ify a connection To add the instrument you can request the Connection Expert to discover the instrument If the instrument cannot be found add the instrument using its hostname or IP address You can fi...

Страница 51: ...status This delay may be longer if there is no DHCP server for example when the instrument is connected directly to a PC User Interface Keysight N774 C Ethernet Access HTTP Telnet VXI 11 SCPI telnet...

Страница 52: ...es a preset of the instrument and restores default measurement settings This is equivalent to the programming command SYSTem PRESet Pressing and holding the button for 5 seconds will reset the LAN par...

Страница 53: ...3 Getting Started 2 Deleting User Data If you need to delete all your logged data and user configurations press and hold the LAN Reset button approx 5 sec to reset the instrument and all your logged d...

Страница 54: ...C to the instrument using a USB 2 0 Type A Male to Type B Male cable 3 The operating system will detect and display the new instrument as a new drive and Network Adapter 4 Double click on this new dri...

Страница 55: ...rt 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 3 To add LAN instruments to the Co...

Страница 56: ...instruments outside of the local subnet a Click select LAN Instrument from the context list This opens the list of discovered LAN instruments b Click the Enter Address tab c Enter the LAN address or...

Страница 57: ...Keysight N774 C 8162 C Series User s Guide 57 Getting Started 2 5 Linux or macOS can use the zeroconf mdns discovery service with tools like Avahi GNU Linux or Bonjour Mac...

Страница 58: ...f N7745C multiport power meter user interface that displays the instrument s connection settings The below figure is also valid for all N774 C instruments Figure 23 N774 C User Interface For details o...

Страница 59: ...Data logging capability 62 Drift dark 62 Dynamic range logging mode 63 Frequency Response 63 Linearity 63 Maximum safe input power 64 Minimum averaging time 64 Noise pp dark 64 Noise 2 sigma dark 64 O...

Страница 60: ...de 3 Definition of Terms Return loss 67 Specification wavelength range 68 Spectral ripple power meter due to interference 68 Storage conditions 68 Total uncertainty 68 Uncertainty at reference conditi...

Страница 61: ...ormance that is usually met but not guaranteed Typical values are based on data from a representative set of instruments Generally all specifications are valid within the specified temperature range a...

Страница 62: ...y subject to variation Data logging capability Maximum number of power readings per port that can be captured during a logging operation Drift dark Specifies the maximum deviation from zero of the mea...

Страница 63: ...ft dark see Drift dark on page 62 RSS is calculated in linear units Watts Frequency Response Specifies the frequency fresp up to which the power meter s transfer function is above a defined cutoff lev...

Страница 64: ...2 for the N7744C and the N7745C only Powers expressed in Watts Conditions All ports dark Averaging time as specified Other conditions as specified Measurement As for Drift dark From the measured Pi an...

Страница 65: ...re Temperature range for which the specifications apply if not differently stated The instrument must not be operated outside this range If previously stored beyond this range wait for acclimation bef...

Страница 66: ...eparation dynamic Specifies the difference between step power input Pstep with positive or negative slope applied to one port and the maximum measured power change Dchng positive or negative on any ot...

Страница 67: ...port to port uncertainty Specifies half the maximum difference between the measured powers of different ports when applying the same stimulus Measured powers expressed in dBm the relative port to por...

Страница 68: ...P Connector as specified Other conditions as specified Measurement Using a laser source without spectral ripple or with known monitored spectral ripple and linewidth 100 MHz and stepping the wavelengt...

Страница 69: ...ibration chain from the national calibration laboratory to the test meter expressed in percent Powers expressed in Watts U 100 M P 1 Conditions Reference conditions as specified Wavelength range The r...

Страница 70: ......

Страница 71: ...Keysight N774 C 8162 C Series User s Guide 4 User Interface Reference N774 C Series User Interface 72 Controlling N774 C Instruments 74 How to Use Auxiliary Functions 88...

Страница 72: ...us tabs that help the user to control the instrument Home This tab displays the various instrument settings For details refer How to Get Current Instrument Settings on page 88 Control Instrument This...

Страница 73: ...s For details refer to How to Save Recall the User Interface Settings on page 89 Configure LAN This tab displays the current LAN configuration of the instrument In addition this tab also allows you to...

Страница 74: ...he user interface will show the measured power of all available 4 or 8 channels depending upon the N774 C instrument type The blue highlighted region on the channel scale denotes the measured power le...

Страница 75: ...ay Wavelength and Power Displays the instrument s current power wavelength and power unit of the selected channel For further details on power and it s unit refer to How to Measure Power on page 78 Fo...

Страница 76: ...r unit 1 Click on the wavelength button 2 Use the left or right arrows to move the position of the cursor pointer to the either left or right 3 Use the up or down arrows to increase or decrease the wa...

Страница 77: ...terval Start Stop Graph Measurement You can start or stop the graph measurement at any point of time To do so go to Settings and then click on the Start Stop toggle button By default this option is en...

Страница 78: ...o wait for external software or hardware triggers How to Set the Power Unit The Power Unit setting allows you to select either W dBm or dB as the units in which power is displayed or returned For retu...

Страница 79: ...critical There are two ways to set the wavelength value You can set the wavelength directly on clicking the Wavelength button see Display Wavelength and Power on page 75 or You go the Settings Measur...

Страница 80: ...the following equations are used to calculate the power level in dB or where PdB is the returned relative power Pmeasured is the absolute power level see How to Set the Calibration Offset on page 79...

Страница 81: ...current power level If you choose this mode the reference of the channel continuously updates to the current power value measured by the other channel The following equations describe how the power i...

Страница 82: ...ctrical offset level for the current environmental conditions For the best results you must Allow the instrument time to acclimatize around 24 hours Allow the instrument time to warm up around 20 minu...

Страница 83: ...r the Power Meter receives ambient light because the input connector is uncovered When zeroing is finished the busy display stops You can now proceed with your measurements When environmental conditio...

Страница 84: ...e returned power value This means that the measured power is greater than the Maximum Power Readback Value You must increase the Range value For more details see the following table Upper Power Limit...

Страница 85: ...tic Gain for Averaging Modulated Signals A fast Auto Gain switching is used to achieve the high dynamic range in the N7744C and N7745C In some applications like determining the average power of signal...

Страница 86: ...s The power meter ports can be configured individually to respond to an input trigger by Ignore IGN The trigger is ignored Single Measurement SME The trigger causes a single power measurement to be ma...

Страница 87: ...774 C 8162 C Series User s Guide 87 User Interface Reference 4 Trigger configuration can also be done using the commands For information on trigger commands refer to the Keysight N774 C Series Program...

Страница 88: ...plays the following settings Description Displays the instrument description such as instrument s model no serial no firmware version and description of the current instrument VISA Instrument Address...

Страница 89: ...n indicator available on the N774 C Home tab The Status LED on the front panel of the connected module will start flashing How to Capture an Image of the Graph The Get Image tab on the N774 C user int...

Страница 90: ...file and click Open The settings will be loaded in the instrument Logging In Out of the N774 C User Interface The login screen allows the authorized users to control the N774 C instruments When the u...

Страница 91: ...he default password is blank 3 Enter the new password 4 Click the Change Password button The password will be changed Use the new password for logging in to the N774 C web page What If You Forget Your...

Страница 92: ...ings 3 Click on Save button Reboot Device A firmware reboot is required if it becomes unresponsive or returns errors To perform a reboot 1 Go to Settings and click Reboot A Reboot Device dialog will a...

Страница 93: ...s 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 Edit LAN Settings The Conf...

Страница 94: ...roken after executing either of the operations below If so reconnect to the instrument using the new hostname or IP address NOTE For IP address and DNS server configuration you can select the Use Auto...

Страница 95: ...o do so 1 Click the Advance Options button available on Configure LAN tab The Advance Network Options page will appear 2 Click on the Reset button to reset all LAN parameters to the factory default WA...

Страница 96: ......

Страница 97: ...Keysight N774 C 8162 C Series User s Guide 5 Accessories...

Страница 98: ...ight optical heads only The connector adapters are needed to attach connecterized fibers Optical head adapters with integral D shape attachment for 8162xx optical head except 81628 see threaded versio...

Страница 99: ...ectors It allows you to establish a precise reference for reflection measurements Return loss is 0 18 dB 0 1 dB 96 2 81000PI E 2000 Connector interface For non physical contact connections Recommended...

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Страница 101: ...Keysight N774 C 8162 C Series User s Guide 6 Maintenance Cleaning Instructions 102 Additional Cleaning Information 106 Firmware Upgrades 107 Contact Keysight Technologies 108...

Страница 102: ...edures To prevent electrical shock disconnect the instrument from the mains before cleaning Use a dry cloth or one slightly dampened with water to clean the external case parts Do not attempt to clean...

Страница 103: ...standard equipment Dust and shutter caps Isopropyl alcohol Cotton swabs Soft tissues Compressed air Dust and shutter caps All of Keysight Technologies lightwave instruments are delivered with either...

Страница 104: ...ressure may scratch the surface and could cause your device to become misaligned It is advisable to rub gently over the surface using only a small circular movement Swabs should be used straight out o...

Страница 105: ...the instrument housing Do not open the instruments as there is a danger of electric shock or electrostatic discharge Opening the instrument can cause damage to sensitive components and in addition you...

Страница 106: ...ies User s Guide 6 Maintenance Additional Cleaning Information For additional information on cleaning and safety matters for optical devices refer the following document https literature cdn keysight...

Страница 107: ...for the N774 C multiport power meters 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 Firmware U...

Страница 108: ...rmware update file on your local PC After the firmware has been updated the instrument will automatically restart itself with the new software During the update process the Status and the Active LED w...

Страница 109: ......

Страница 110: ...This information is subject to change without notice Keysight Technologies 2021 Edition 2 0 April 2021 www keysight com...

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