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11 Using the SCPI Server

Once the new connection has been added, you should see a display like the following
with information on the right section about the E6610A. Once the socket connection
setup has been completed one time on the PC, when you start the Keysight
Connection Expert in the future, you should see the E6610A in the list of instruments
on the left and be able to click on it to see the information shown below.

70

Keysight E6610A User and Programming Guide

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Содержание E6610A

Страница 1: ...User and Programming Guide Keysight Remote Radio Head Tester E6610A...

Страница 2: ...under the same terms by which the software is customarily provided to the public Accordingly Keysight provides the Software to U S government customers under its standard commercial license which is...

Страница 3: ...ith local AC mains connections Assume all measurement control and data I O connections are for connection to Category I sources unless otherwise marked or described in the user documentation Exercise...

Страница 4: ...Canadian Interference Causing Equipment Standard ICES 001 It also identifies the product is an Industrial Scientific and Medical Group 1 Class A product CISPR 11 Clause 4 South Korean Class A EMC Dec...

Страница 5: ...ystem Configuration 21 7 Setting up Measurements 23 Turn On Hardware 23 Connect to the E6610A with the GUI Software 23 Using the Search Function 24 Manual Entry of Host Name or IP Address 24 Configure...

Страница 6: ...nal SYSTEM Commands 75 CONTROL Subsystem Commands 76 MEASURE Subsystem Commands 77 CONFIGURE commands 77 INITIATE commands 78 FETCH commands 78 MEASURE commands 81 SOURCE Subsystem Commands 85 SENSE S...

Страница 7: ...to download and install the GUI software and set up the E6610A to conduct a simple RF loopback test to verify operation This document contains a less detailed version of the GUI software setup instruc...

Страница 8: ...8 Keysight E6610A User and Programming Guide...

Страница 9: ...2 Referenced and Related Documents Keysight E6610A User and Programming Guide 9 2 Referenced and Related Documents E6610 90001 Quick Start Poster E6610 90002 E6610A Startup Guide...

Страница 10: ...10 Keysight E6610A User and Programming Guide...

Страница 11: ...single 1U rack unit high box It was designed to satisfy the needs of manufacturing test users The E6610A contains all of the necessary RF and baseband functionality for fast repeatable and traceable t...

Страница 12: ...12 Keysight E6610A User and Programming Guide...

Страница 13: ...ve SFP2 SFP2 module status reserved for future use AxC Tx Transmit baseband configuration status orange waiting for configuration green configured AxC Rx Receiver data capture status green configured...

Страница 14: ...driving 50 no T connectors 7 SYNC IN Frame trigger input BNC female high Z LV TTL output capable of driving 50 no T connectors 8 10 MHz OUT Frequency reference output 10 MHz 0 dBm nominal 50 BNC femal...

Страница 15: ...ktop icon or by going to the Start Menu and navigating to the Keysight E6610A Remote Radio Head Tester folder and selecting E6610A User Inter face The GUI startup screen appears as follows Turn On Har...

Страница 16: ...st Name or IP Address To use the host name type the serial number of the E6610A e g KR56180110 into the box to the right of the Search button To use the IP address type the IP address of the E6610A e...

Страница 17: ...tton to update the firmware using the file that was included in the installation package shown under Released with setup If you want to install a different firmware file select the File button to brow...

Страница 18: ...stalled licenses will be shown under Installed If new licenses need to be installed click on the Software License Redemption button for a summary on how to redeem a Software Entitlement Certificate fo...

Страница 19: ...t the bottom of the window If they are not shown click the Refresh button to show the available licenses 5 Click the Install button to install the licenses into the E6610A 6 Close the License Manageme...

Страница 20: ...20 Keysight E6610A User and Programming Guide...

Страница 21: ...e DHCP functions must be used a network hub or switch without DHCP cannot be used 2 Connect AC power to the E6610A and an appropriate power supply to the RRH 3 Insert SFP or SFP transceivers into the...

Страница 22: ...setup for a dual channel Tx Rx system testing two antenna paths in the RRH If you are setting up a single channel system omit the connections between Tx2 and Rx2 on the E6610A and the RRH Your equipm...

Страница 23: ...n the RRH has obtained an IP address and the E6610A has captured the information the STS LED will change to steady green Note that in some cases the STS LED may not turn steady green even though the R...

Страница 24: ...e complete list Select the desired instrument and click the Connect button You will see a mes sage when the connection is done and the connection status displayed in the bar at the bottom of the GUI w...

Страница 25: ...able settings and measurements see GUI Menus and Displays Tooltip help hints are available for each parameter on the GUI Place the mouse cursor in the data entry field and a pop up will appear with he...

Страница 26: ...e effect If you will be changing the CPRI line rate also both parameters can be changed befor clicking on the Re sync button 4 Set the CPRI line rate The default value of Auto Negotiate will allow the...

Страница 27: ...7 Setting up Measurements Keysight E6610A User and Programming Guide 27 Configure CPRI Tx and Rx Click the CPRI tab to configure settings for the two CPRI transmitters and receivers...

Страница 28: ...lications requires valid Signal Studio licenses for download to the E6610A To load waveform files into the E6610A go to the menu bar in the GUI and select Instru ment Waveform Manager See this topic i...

Страница 29: ...the RF Rx port which is the RRH s Tx output frequency Note Both RF RX 1 and RF RX 2 are automatically set to the same frequency Length ms Set the length of the data capture Default is one LTE frame w...

Страница 30: ...allowed range of values is 80 00 to 5 00 dBm Input check box Enable or disable the RF Rx capture channel Configure RF TX Ports Click on the RF TX tab to configure settings for the RF TX outputs which...

Страница 31: ...6610A will use this information com bined with the Level dBm setting to set the power level transmitted from the RF Tx port The range is 0 to 80 00 dB Level dBm Enter the power level to be applied at...

Страница 32: ...Configure Measurement Windows You can open multiple measurement windows to display the results from any of the 4 CPRI or RF Rx data captures To open a new window go to the menu bar and select New Win...

Страница 33: ...le it to use the CPRI data stream for RF signal generation and transmission of digital IQ data from the receiver This requires knowledge of the configuration commands for the RRH which are unique for...

Страница 34: ...the command CONTrol INST HOST KR12345678 where KR12345678 is replaced by the serial number of the desired E6610A Note that this command must be sent as a query with the question mark and the SCPI ser...

Страница 35: ...commands to configure the Tx and Rx parameters of the RRH Enable operation of the RRH transmitter and receiver Initiate E6610A Measurements Click the green arrow to the right of the Trigger type sele...

Страница 36: ...36 Keysight E6610A User and Programming Guide...

Страница 37: ...ment windows Note that any settings changes must be committed to the E6610A before they will be saved as part of the instrument state Recall State Measurement Opens a file explorer window to allow use...

Страница 38: ...ll appear when the software is done and a list of discovered instruments will appear in the box to the right of the Search button Use the drop down arrow to see the complete list Connect This serves t...

Страница 39: ...frame Reference source Specifies the source of the reference signal Choices are automatic internal external External reference status Indicates whether an external reference has been detected at the...

Страница 40: ...installed by clicking the File button to select a different firmware file Licensing Opens the License Management window shown below which displays the licenses currently installed in the instrument a...

Страница 41: ...icenses are installed in the E6610A These files are selected by choosing TM 1 1 TM 3 1 or FRC A3 from the Waveform drop down menu in the CPRI Tx or RF Tx settings Any unused waveform files may be dele...

Страница 42: ...point numbers between 1 and 1 To avoid clipping and overdriving the RRH the IQ data should be scaled so that the highest power that would be transmitted in the waveform is scaled to 18 dB To delete f...

Страница 43: ...information from the E6610A click the Clear button New Window Menu The New Window menu allows the user to open new windows to display various measurements from the CPRI Rx or RF Rx captures and also...

Страница 44: ...t windows for the enabled RF Rx receiver inputs for testing the downlink transmit paths in the RRH The available measurements are described below Analysis Measurement Windows Time Domain IQ This windo...

Страница 45: ...itude scale of the IQ samples in the captured frame with the sample number on the x axis The screenshot shows an example measurement of an LTE TDD signal The window also shows these numeric results Sa...

Страница 46: ...measurements the y axis is in dBFS and the x axis is labeled relative to the center frequency as 0 Hz The window also shows these numeric results Sample rate of measurement Resolution bandwidth Occupi...

Страница 47: ...lays the adjacent channel power for the transmitted signal with preconfigured offsets and integration bandwidths based on the RAT Config settings The following numeric results are available Sample rat...

Страница 48: ...displayed in red and the data trace is in green The mask choices are 3GPP 36 141 Cat A 1 GHz E UTRA 3 GHz 3GPP 36 141 Cat A E UTRA 1 GHz 3GPP 36 141 Cat B2 default mask The following numeric results a...

Страница 49: ...on the y axis and the peak to average ratio PAR is on the x axis The gray trace represents a Gaussian distribution for reference The following numeric results are available Sample rate Signal capture...

Страница 50: ...s the reference for the CPRI Rx1 Rx2 measurements respectively When automated measurements are performed using the SCPI server the appropriate SCPI commands need to be sent to define the reference wav...

Страница 51: ...EVM for all symbols Peak EVM over all symbols Signal to noise ratio calculated from EVM result Number of QPSK 64QAM symbols analyzed RMS EVM Frequency error Time sync IQ offset IQ gain error IQ quadr...

Страница 52: ...rated TM 3 1 signal as an example EVM vs Sub carrier This measurement displays a graph of the EVM in percent vs subcarrier number It also displays the same numeric results as the EVM vs Constellation...

Страница 53: ...displays a graph of the EVM in percent vs symbol number It also displays the same numeric results as the EVM vs Constellation measurement The screenshot below shows an example LTE TDD measurement wher...

Страница 54: ...Displays SCPI Command Log This selection opens a window that displays the SCPI commands being sent to the E6610A and can be used to help create a software program for test automation 54 Keysight E6610...

Страница 55: ...ns the CPRI Diagnostics window The CPRI tab shows information about the CPRI link status including the current CPRI line rate and status of alarms This information is updated continuously until the di...

Страница 56: ...measurement displays This may be useful for grouping measurement results The screenshot below shows the main GUI frame containing RF Rx1 measurements along with a new parent frame containing CPRI 1 m...

Страница 57: ...8 GUI Menus and Measurement Displays Keysight E6610A User and Programming Guide 57 Window Menu Close child window Closes the selected active measurement window...

Страница 58: ...l frame Next Selects the next measurement window as the active window Previous Selects the previous measurement window as the active window Close All Windows Closes all open windows within the main so...

Страница 59: ...10A User and Programming Guide 59 Select Measurement This menu allows you the change the measurement type in the currently selected window The list of available measurements varies depending on whethe...

Страница 60: ...il testing for category A for E UTRA bands between 1 and 3 GHz and E UTRA bands below 1 GHz and for category B2 The default mask is 3GPP 36 141 Cat B2 Calculate BER This selection is available when op...

Страница 61: ...e the y axis scaling for the selected measurement display These settings are not available for the EVM Constellation measurement Set REF level Sets the reference level Set Num Div Sets the number of d...

Страница 62: ...d Measurement Displays I O Menu This menu allows the user to export the captured IQ data for the selected measurement as a CSV file for use with other analysis software 62 Keysight E6610A User and Pro...

Страница 63: ...no user calibration procedures for the E6610A Keysight recommends sending the E6610A to a Keysight Service Center for periodic calibration The recommended calibration interval is one year For more inf...

Страница 64: ...64 Keysight E6610A User and Programming Guide...

Страница 65: ...plastic plug from the front connectors on the SFP Insert SFP into E6610A until it clicks in place Take precautions to prevent damage from electrostatic discharge ESD To insert the fiber optic cable en...

Страница 66: ...ule Minimize the number of times that the SFP module is removed and inserted while the E6610A or RRH are turned on Fiber connections can be degraded by oils from skin contact Avoid touching the ends o...

Страница 67: ...Keysight E6610A User and Programming Guide 67...

Страница 68: ...terminal emulation program Examples of terminal emulation software include the PuTTY freeware program download from www putty org or the Keysight Connection Expert utility which is part of the Keysigh...

Страница 69: ...has identified for connection To connect to the E6610A send the command CONTrol INST CONN The SCPI server will respond with 1 for a successful connection To confirm the connection send the command IDN...

Страница 70: ...ight section about the E6610A Once the socket connection setup has been completed one time on the PC when you start the Keysight Connection Expert in the future you should see the E6610A in the list o...

Страница 71: ...10A User and Programming Guide 71 Next click on Send Commands To This Instrument next to the VISA Address to open the Keysight Interactive IO window Click on Options and use the drop down menu for EOL...

Страница 72: ...for the E6610A you can also use the host name by typing the command CONTrol INST HOST KR12345678 where KR12345678 is replaced by the serial number of the desired E6610A Note that this command must be...

Страница 73: ...s SOURCE Subsystem For setting up and configuring playback of CPRI and RF signals to be transmitted by the E6610A SENSE Subsystem For configuring the E6610A s signal capture and measurement system to...

Страница 74: ...the E6610A this will initiate a reboot of the instrument SRE Service Request Enable command SRE Service Request Enable query STB Status Byte query TST Self Test query WAI Wait to continue command IEEE...

Страница 75: ...bits set to 1 STATus QUEStionable ENABle value Sets the value of the Data Questionable Event Enable register The value is the sum of the decimal values of the bits you want to enable STATus QUEStiona...

Страница 76: ...trol it The query s response will be the hostname Example CONT INST HOST KR12345678 CONTrol INSTrument CONNect Used after the E6610A IP address or hostname has been set to establish the connection to...

Страница 77: ...eaved or consecutive This command is global and will specify the bandwidth to be used for all CPRI RX and TX inputs outputs on the E6610A CONFigure RAT BW Queries the bandwidth setting and IP mapping...

Страница 78: ...dth for the IQ samples to be used on the CPRI link CONFigure CPRI SEED seed value Sets the CPRI scrambling seed to an integer value between 0 and 326778 A value of 0 turns scrambling off Scrambling is...

Страница 79: ...th the mask or not 2 Emissions level in Mask region 5 at a lower frequency than the carrier 3 Emissions level in Mask region 4 at a lower frequency than the carrier 4 Emissions level in Mask region 3...

Страница 80: ...ts number 20 Bit Error Rate Bit error rate results are returned only if option BR1 is installed in the E6610A The demodulation test model to be used is set using one of these commands CONFigure CPRI T...

Страница 81: ...ommand uses existing capture data and returns the following CCDF values 1 RMS Power in dBm 2 Crest Factor in dB 3 Peak Power in dBm 4 Peak to Average ratio for 10 in dB 5 Peak to Average ratio for 1 i...

Страница 82: ...L showing if the emissions complied with the mask or not 2 Emissions level in Mask region 5 at a lower frequency than the carrier 3 Emissions level in Mask region 4 at a lower frequency than the carri...

Страница 83: ...17 64QAM EVM Peak 18 Total Bits number 19 Error Bits number 20 Bit Error Rate Bit error rate results are returned only if option BR1 is installed in the E6610A otherwise the values are zero The demod...

Страница 84: ...CAPTure TMODel This command also generates a plot file of the EVM constellation points which can be exported using the appropriate TRACE command NOTE If a custom waveform file is being measured use t...

Страница 85: ...d E6610A RF TX output ON or OFF SOURce 1 2 RADio FREQuency value in kHz Sets the center frequency of the selected E6610A RF TX to the chosen frequency value in kHz SOURce 1 2 RADio FREQuency Returns t...

Страница 86: ...er supplied file must be installed in the E6610A s base band memory before it can be used SOURce 1 2 RADio ARB STATe ON OFF 1 0 Sets the arbitrary waveform generator s state for the selected RF TX out...

Страница 87: ...RI TX 1 AxC Group 1 will be transmitted beginning in the first CPRI AxC container For example for a 10 MHz carrier the group size will be 4 and the waveform data will be loaded into containers 1 2 3 a...

Страница 88: ...2 RADio ARB STATe ON and SOURce 1 2 CPRI ARB STATe ON commands This will set up those sources so that when the master playback is enabled they will start to play back signals 3 Finally re start all en...

Страница 89: ...te alarm present 0 no remote alarm 16 Remote LOS 1 Remote LOS 17 Remote LOF 1 Remote LOF 18 PLL lock 1 PLL locked 19 TX clock locked 1 locked 20 RX clock locked 1 locked 21 E6610A s CPRI is Master or...

Страница 90: ...el of 10 dBm WARNING If the actual input RF power is more than 10 dB above the level set using this command damage to the E6610A s detection hardware may occur SENSe 1 2 RADio LEVel This command will...

Страница 91: ...ms SENSe 1 2 RADio CAPTure TMODel TM11 TM31 FRCA3 file_name This command selects the waveform that is used as the reference to demodulate the captured data for the selec ted RF RX input Since the RF...

Страница 92: ...th for the selected CPRI RX chan nel SENSe 1 2 CPRI CAPTure TRIGger value in ms This command sets the capture trigger delay for the selected CPRI RX channel The value entered is in ms of delay from th...

Страница 93: ...t of frequency and power level values for example 2320 040 23 30 2320 100 23 47 2320 160 23 46 etc The frequencies are in MHz and the power levels are in dBm TRACe 1 2 SEMask This command will read th...

Страница 94: ...command TRIGger BNC STATe Queries the enable state of the BNC connectors Res ult is either BNC configuration disabled or BNC con figuration enabled TRIGger SYNC IN STATe ON OFF 1 0 Sets the state of t...

Страница 95: ...to if it s set to auto select Example Sequence of SCPI commands for E6610A set up and Measurement Below is an annotated sequence of SCPI commands that can be used to configure an E6610A and carry out...

Страница 96: ...y waveform generator for TX1 15 SOURce1 RADio STATe ON Turns on the RF output for TX1 Set up the E6610A s RF receiver channel RX1 16 SENSe1 RADio FREQuency 2345000 Sets the center frequency of RX1 to...

Страница 97: ...r playback control to start play back on all enabled playback channels 28 SYST ERR Check if any errors have occurred The E6610A is now ready to make measurements At this point the RRH under test shoul...

Страница 98: ...trace data for the ACLR plot 35 FETCh1 SEM Fetch the SEM mask result 36 TRACE1 SEM Request the SEM mask plot 37 FETCh1 EVM Fetch the EVM results 38 SYST ERR check if all commands executed without any...

Страница 99: ...e E6610A need to be considered 1 The maximum signal the E6610A can produce at its transmitters is 10 dBm CW or 0 dBm modulated 2 The minimum signal the E6610A can produce at its transmitters is 55 dBm...

Страница 100: ...er level should be reduced by about 1 2 dB In order to obtain the best signal to noise level at the RRH for uplink testing it is best to operate the E6610A transmitter at as high a power as possible a...

Страница 101: ...n a terminal window using the PuTTY software and connect to one E6610A Open additional instances of PuTTY and repeat the steps to connect to additional E6610As Each terminal window will communicate wi...

Страница 102: ...lave As shown in the figure below the 10 MHz reference output from the master E6610A should be connected to the 10 MHz reference input of the slave E6610A The SYNC OUT signal from the master E6610A sh...

Страница 103: ...ly the CPRI data to the Ant 3 4 paths in the RRH You will be able to measure the Tx output from all 4 antenna ports using the RF Rx ports of the two E6610As However only the uplink data from Ant 1 2 a...

Страница 104: ...H with up to 4 antenna ports Note that to prevent correlation peaks for multi carrier testing a multicast data stream should not be routed to the same radio path in the RRH as the original waveform th...

Страница 105: ...rate 3 Since one AxC 30 bits the 480 bits available in one basic frame for CPRI line rate 3 allow 16 AxCs to be transmitted The diagrams below show how the 16 AxCs are used for different signal bandw...

Страница 106: ...ration and Multicast Mode Note that the E6610A transmits the AxC container groups consecutively It is not possible to specify the starting position for an AxC container group 106 Keysight E6610A User...

Страница 107: ...This information is subject to change without notice Keysight Technologies 2013 2016 Edition 1 September 2016 Printed In USA E6610A 90003 www keysight com...

Страница 108: ...This Page Intentionally Left Blank Keysight E6610A User and Programming Guide 108...

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