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R&S 1444.1190K02 User Manual Download Page 125

Remote control basics

R&S

®

NRPxxP

125

User Manual 1179.5760.02 ─ 02

10

 

Remote control basics

For general information on remote control of Rohde

 

&

 

Schwarz products via SCPI,

refer to 

www.rohde-schwarz.com/rc-via-scpi

.

10.1

 

Remote control interfaces and protocols

For remote control, communication between the R&S NRPxxP power sensors and the
controlling host is established based on various interfaces and protocols.

Depending on the power sensor type, the power sensors support different interfaces
for remote control.

●

R&S NRPxxP USB power sensors are always accessed using USB.

Table 10-1

 describes the protocols that are supported for each interface.

Table 10-1: Remote control interfaces and protocols

Interface

Supported by

Protocols, VISA

*)

 address string and Library

USB

All power sensors

●

USBTMC

USB::<vendor ID>::<product ID>::<serial number>[::
INSTR]

VISA

●

NRP legacy protocol

*) VISA is a standardized software interface library providing input and output functions to communicate with instruments. A VISA
installation on the controller is a prerequisite for remote control over USBTMC and LAN (when using VXI-11 or HiSLIP protocol)
interfaces.

10.1.1

 

USB interface

For remote control using USB connection, the computer and the power sensors must
be connected via the USB interface. A USB connection requires the VISA library to be
installed. VISA detects and configures the R&S

 

power sensors automatically when the

USB connection is established. Apart from the USBTMC driver (which comes with the
installation of the R&S

 

NRP Toolkit), you do not have to install a separate driver.

USB Test & Measurement Class Specification (USBTMC) is a protocol that is built on
top of USB for communication with USB devices. It defines class code information of
the power sensor that identifies its functionality to load the respective device driver.
Using VISA library, it supports service request, triggers and other operations that are
commonly found in GPIB devices.

Besides USBTMC, the NRP legacy protocol is available to ensure the compatibility of
the R&S NRPxxP power sensors with the R&S

 

NRP

‑

Z series of power sensors. The

usage of this protocol is not recommended for new applications.

The resource string represents an addressing scheme that is used to establish a com-
munication session with the power sensor. It is based on the power sensor address
and some power sensor- and vendor-specific information.

Remote control interfaces and protocols

Summary of Contents for 1444.1190K02

Page 1: ...R S NRPxxP Pulse Power Sensors User Manual 1179576002 Version 02 ÝÇÊ2 ...

Page 2: ...Phone 49 89 41 29 0 Email info rohde schwarz com Internet www rohde schwarz com Subject to change data without tolerance limits is not binding R S is a registered trademark of Rohde Schwarz GmbH Co KG All other trademarks are the properties of their respective owners 1179 5760 02 Version 02 R S NRPxxP Throughout this manual products from Rohde Schwarz are indicated without the symbol for example R...

Page 3: ...heets and brochures 10 2 1 7 Release notes and open source acknowledgment OSA 10 2 1 8 Application notes application cards white papers etc 10 2 2 Key features 10 3 Preparing for use 11 3 1 Unpacking and checking 11 3 2 Choosing the operating site 11 3 3 Considerations for test setup 12 3 4 Connecting to a DUT 12 3 5 Powering the power sensor 13 3 6 Connecting a cable to the host interface 13 3 7 ...

Page 4: ... Replacing an R S NRP Zxx with an R S NRPxxP 32 7 1 Important difference 32 7 2 Prerequisites 32 8 Remote control commands 33 8 1 Conventions used in SCPI command descriptions 33 8 2 Notations 34 8 3 Common commands 35 8 4 Preparing for the measurement 39 8 4 1 Selecting a measurement mode 39 8 4 2 Configuring the measured values 40 8 5 Controlling the measurement 41 8 5 1 Starting and ending a me...

Page 5: ...s average measurement results 95 8 9 2 Burst average measurement results 96 8 9 3 Timeslot measurement results 96 8 9 4 Trace measurement results 96 8 9 5 Pulse analysis measurement results 99 8 9 6 Statistics measurement results 106 8 10 Calibrating zeroing 107 8 11 Testing 109 8 12 Configuring the system 110 8 12 1 Configuring general functions 110 8 13 Using the status register 117 8 13 1 Gener...

Page 6: ...g system 126 10 2 1 Overview 126 10 2 2 Device status register 128 10 2 3 Questionable status register 130 10 2 4 Standard event status and enable register ESR ESE 132 10 2 5 Operation status register 133 11 Troubleshooting 139 11 1 Displaying status information 139 11 2 Performing a selftest 139 11 3 Problems during a firmware update 139 11 4 Contacting customer support 140 12 Transporting 141 13...

Page 7: ...s The printed Safety Instructions are delivered with the product Throughout the documentation safety instructions are provided when you need to take care during setup or operation 1 1 Safety instructions Products from the Rohde Schwarz group of companies are manufactured according to the highest technical standards To use the products safely follow the instructions provided here and in the product...

Page 8: ...e product inform about Personal safety See Meaning of safety labels on page 8 Environment safety See Table 1 1 Identification of the product Table 1 1 Labels regarding environment safety Labeling in line with EN 50419 for disposal of electrical and electronic equipment after the prod uct has come to the end of its service life For more information see Disposing electrical and electronic equipment ...

Page 9: ...vered with the power sensor 2 1 2 User manuals Contains the description of all instrument modes and functions It also provides an introduction to remote control a complete description of the remote control commands with programming examples and information on maintenance and interfaces Includes the contents of the getting started manual 2 1 3 Tutorials Tutorials offer guided examples and demonstra...

Page 10: ...ource soft ware www rohde schwarz com firmware nrp p 2 1 8 Application notes application cards white papers etc These documents deal with special applications or background information on particu lar topics 2 2 Key features The pulse power sensors are members of the NRP power sensors from Rohde Schwarz They provide a high speed USB interface that constitutes both the communication port and the pow...

Page 11: ...rating site Specific operating conditions ensure proper operation and avoid damage to the prod uct and connected devices For information on environmental conditions such as ambi ent temperature and humidity see the data sheet Electromagnetic compatibility classes The electromagnetic compatibility EMC class indicates where you can operate the product The EMC class of the product is given in the dat...

Page 12: ...ge is most likely to occur when you connect or disconnect a DUT NOTICE Electrostatic discharge can damage the electronic components of the product and the device under test DUT Ground yourself to prevent electrostatic discharge damage a Use a wrist strap and cord to connect yourself to ground b Use a conductive floor mat and heel strap combination 3 4 Connecting to a DUT For connecting the power s...

Page 13: ...r 2 Remove the power sensor 3 5 Powering the power sensor The electrical power for the R S NRPxxP is supplied over the host interface See Chapter 4 3 Host interface on page 19 3 6 Connecting a cable to the host interface For connecting the power sensor to a USB host use the host interface See Chap ter 4 3 Host interface on page 19 Depending on the USB host use one of the following cables Computer ...

Page 14: ... Operating concepts on page 20 Establish the connection using Host interface See Chapter 3 7 1 1 Simple USB connection on page 14 See Chapter 3 7 1 2 R S NRP Z5 sensor hub setup on page 15 3 7 1 1 Simple USB connection All R S NRPxxP power sensors can be connected to the USB interface of a computer Sleep mode If a power sensor is connected to a laptop and you close the laptop the power sensor goes...

Page 15: ...ecting the power sensor can damage the power sensor or lead to erroneous results Ensure that you connect or discon nect the power sensor as described in Chapter 3 4 Connecting to a DUT on page 12 Connect the power sensor to the signal source 4 On the computer start a software application to view the measurement results See Chapter 5 Operating concepts on page 20 3 7 1 2 R S NRP Z5 sensor hub setup...

Page 16: ... S NRPxxP power sensor 9 R S NRP ZK6 cable Set up as shown in Figure 3 2 1 Connect the R S NRP ZK6 cable to the power sensor See To connect a cable to the host interface of the power sensor on page 13 2 Connect the power sensors to the R S NRP Z5 sensor hub You can connect up to four power sensors 3 Connect the R S NRP Z5 to the computer 4 NOTICE Incorrectly connecting or disconnecting the power s...

Page 17: ... the trigger device optional 8 On the computer start a software application to view the measurement results See Chapter 5 Operating concepts on page 20 3 7 2 Base unit As a controlling host you can use an R S NRX base unit You can also operate the power sensor using other supported Rohde Schwarz instruments with a sensor connector For details see also the user manual of the instrument Establish th...

Page 18: ...ace on page 19 4 Trigger I O connector see Chapter 4 4 Trigger I O connector on page 19 4 1 RF connector The RF connector is used for connecting the power sensor to a device under test DUT or a signal generator See Chapter 3 4 Connecting to a DUT on page 12 For maximum measurement accuracy tighten the RF connector using a torque wrench with a nominal torque as specified in the following table Tabl...

Page 19: ...query the error type with SYSTem SERRor Note If this state occurs after a firmware update the update was not successful Perform the firmware update again See also Chapter 11 3 Problems during a firmware update on page 139 4 3 Host interface The host interface is used for establishing a connection between the power sensor and a USB host For this purpose an external cable is needed See Chapter 3 6 C...

Page 20: ...ng system 5 1 1 Versions and downloads The R S NRP Toolkit is available for Microsoft Windows operating systems as listed in Chapter 5 1 2 System require ments on page 20 Linux distributions macOS Several R S NRP Toolkit versions are available on your documentation CD ROM The latest version for Windows is available at www rohde schwarz com software nrp toolkit To obtain an R S NRP Toolkit for an o...

Page 21: ...s based computer In the NRP Toolkit Setup dialog the correct R S NRP Toolkit version for your operating system 32 bit or 64 bit is already selected 2 Enable the components you want to install NRP Toolkit SDK The software development kit SDK provides programming examples for the R S power sensors See Chapter 9 Performing measurement tasks programming examples on page 120 IVI Shared Components Insta...

Page 22: ...art menu The guide explains the network setup Firmware Update You can use the Firmware Update for NRP Family program to load new firmware for the power sensors See Chapter 6 Firmware update on page 28 NRP Version Display Displays version information of all installed power measurement relevant software packages R S NRP Z Uncertainty Calculator Determines the expanded measurement uncertainty The too...

Page 23: ...P power sensor R S NRP ZKU cable or an R S NRP Z5 sensor hub and an R S NRP ZK6 cable to connect the power sensor to the computer Windows computer with installed R S NRP Toolkit version 4 20 or higher R S NRPV version 3 2 or higher refer to the operating manual of the R S NRPV for a description of the installation process Setup 1 2 3 4 5 6 NRP 3 Path Diode Power Sensor MHz to GHz 100 pW to 200 mW ...

Page 24: ...ls before zeroing An active measurement signal during zeroing causes an error 3 Switch on the test signal of the signal source 4 Start a measurement 5 4 R S Power Viewer The R S Power Viewer is software that simplifies many measurement tasks It is provi ded on your documentation CD ROM and on the Rohde Schwarz website as a sepa rate standalone installation package Required equipment R S NRPxxP pow...

Page 25: ... nect the power sensor as described in Chapter 3 4 Connecting to a DUT on page 12 Connect the power sensor to the signal source 2 Connect the cables as shown in Figure 5 2 For a detailed description refer to Chapter 3 7 1 1 Simple USB connection on page 14 Starting a measurement For a detailed description refer to the operating manual of the R S Power Viewer The manual is installed automatically d...

Page 26: ... 4 R S NRP ZK8 cable 5 Sensor input connector of the R S NRX 6 R S NRX base unit 1 NOTICE Incorrectly connecting or disconnecting the power sensor can damage the power sensor or lead to erroneous results Ensure that you connect or discon nect the power sensor as described in Chapter 3 4 Connecting to a DUT on page 12 Connect the power sensor to the signal source 2 Connect the cables as shown in Fi...

Page 27: ...y of the R S NRX c Tap Zero All Sensors 3 Configure the measurement a In the Measurement Settings dialog select the Measurement Type for example Continuous Average b Tap Quick Setup Auto Set 4 Switch on the signal source The measurement starts and the result is displayed in dBm 5 If necessary perform further settings R S NRX ...

Page 28: ... 2 Updating the firmware Do not interrupt the firmware update because an interruption can lead to missing or faulty firmware Take special care not to disconnect the power supply while the update is in progress Interrupting the power supply during the firmware update most likely leads to an unusable power sensor that needs to be sent in for maintenance You can choose from several methods to update ...

Page 29: ...anning for R S power sensors connected via USB When the scan is completed all recognized power sensors are listed under Device 4 If the power sensor you want to update is not listed perform one of the following actions a Click Rescan to search for attached power sensors b Check whether all necessary drivers are installed on the computer For example if the VISA library is not installed on the compu...

Page 30: ... find the power sensor in the list of power sensors provided by Firmware Update for NRP Family The driver assigned to the power sensor is the legacy driver Install a recent VISA software The power sensor is highlighted by a yellow exclamation mark in the Windows device manager Windows tries in vain to find a USB driver for the power sensor Install a recent VISA software Further information Chapter...

Page 31: ...m FWUPdate on page 112 The size of the file is 10242884 This number has 8 digits Thus the block_data consist of the following 8 How many digits follow to specify the file size 10242884 Number that specifies the file size file_contents Contents of the rsu file byte by byte 0x0a Delimiter In this example you write exactly 10242905 bytes to the power sensor for example by using a viWrite function The...

Page 32: ...the firmware is loaded Because the USB power sen sors are plug and play devices the drivers are loaded after enumeration in the host system For the R S NRP Zxx power sensors the whole process takes 4 s to 5 s For USB power sensors the process can take up to 8 s Otherwise the R S NRP Zxx power sensors and the USB power sensors are compati ble as far as possible 7 2 Prerequisites Install the R S NRP...

Page 33: ...rameters Parameters required only to refine a query are indicated as Query parameters Parameters that are only returned as the result of a query are indicated as Return values Conformity Commands that are taken from the SCPI standard are indicated as SCPI con firmed All commands used by the R S NRPxxP follow the SCPI syntax rules Asynchronous commands A command which does not automatically finish ...

Page 34: ... systems permit certain keywords to be inserted into the header or omitted These keywords are marked by square brackets in the description The power sensor must recognize the long command to comply with the SCPI standard Some commands are considerably shortened without these optional mnemonics So you can use the short or long form for the commands distinguished here by upper case and lowercase let...

Page 35: ...us ON starts the measurements Command INITiate CONTinuous OFF stops the measurements Parameters in braces can be included in the command once several times or not at all 8 3 Common commands The common commands are taken from the IEEE 488 2 IEC 625 2 standard The headers of these commands consist of an asterisk followed by three letters CLS 35 ESE 36 ESR 36 IDN 36 IST 36 OPC 36 OPT 37 PRE 37 RCL 37...

Page 36: ...ery only IDN Identification Returns a string containing information on the identity of the power sensor device identification code In addition the version number of the installed firmware is indica ted Usage Query only IST Individual status Returns the current value of the IST flag in decimal form The IST flag is the status bit which is sent during a parallel poll Usage Query only OPC Operation co...

Page 37: ...e Query only PRE register Parallel poll register enable Sets the parallel poll enable register to the specified value or queries the current value Parameters register Range 0 to 255 RST 0 RCL number Recall Calls the device state which has been stored with the SAV command under the speci fied number Setting parameters number Range 0 to 9 RST 0 Usage Setting only RST Reset Sets the instrument to a d...

Page 38: ...us byte Returns the contents of the status byte in decimal form Usage Query only TRG Trigger Triggers a measurement if the following conditions are met Power sensor is in the waiting for trigger state Trigger source is set to BUS See TRIGger SOURce BUS Usage Event TST Selftest Triggers a selftest of the R S NRPxxP and outputs the result 0 indicates that no errors have occurred Usage Query only WAI...

Page 39: ...ensor FUNCtion function Sets the measurement mode Parameters function POWer AVG Continuous average mode See Chapter 8 6 1 Continuous average measurement on page 55 POWer BURSt AVG Burst average mode See Chapter 8 6 2 Burst average measurement on page 58 POWer TSLot AVG Timeslot mode See Chapter 8 6 3 Timeslot measurement on page 59 XTIMe POWer Trace mode See Chapter 8 6 4 Trace measurement on page...

Page 40: ...ated Depending on the measurement mode the following settings are possible SENS FUNC Possible CALC FEED Meaning POWer AVG POWer AVERage Average value POWer PEAK Peak value POWer RANDom Randomly selected value from the measurement interval POWer BURSt AVG POWer AVERage Average value POWer PEAK Peak value POWer RANDom Randomly selected value from the measurement interval POWer TSLot AVG POWer AVERag...

Page 41: ...tart the measurement immediately after the initiate command or do you want to wait for a trigger event Do you want to start a single measurement cycle or a sequence of measurement cycles Do you want to output each new average value as a measurement result or do you want to bundle more measured values into one result 8 5 1 Starting and ending a measurement ABORt 41 INITiate ALL 42 INITiate IMMediat...

Page 42: ...bles or disables the continuous measurement mode In continuous measurement mode the power sensor does not go into the idle state after a measurement has been completed but immediately executes another measurement cycle See also Chapter 8 5 2 Triggering on page 42 Parameters state ON Measurements are performed continuously If a measurement is completed the power sensor does not return to the idle s...

Page 43: ...rig ger state Depending on the required number of measurement cycles you use one of the following commands INITiate CONTinuous A new measurement cycle is started automatically after the previous one has been terminated INITiate IMMediate The number of measurement cycles is restricted If TRIGger COUNt 1 is set the command starts a single measurement cycle that renders one result Every time you send...

Page 44: ... p t A B C A D E F D 1 1 1 2 3 Figure 8 1 Significance of the dropout time 1 Dropout time 2 Trigger hysteresis 3 Trigger level The RF power between the slots is below the threshold defined by the trigger level and the trigger hysteresis Therefore the trigger hysteresis alone cannot prevent triggering at B or at C Therefore set the dropout time greater than the time elapsed between points D and B a...

Page 45: ...utputs a measurement result when the entire measurement has been completed This means that the number of measurement cycle repetitions is equal to the set aver age count If the average count is large the measurement time can be very long Useful if you expect slow changes in the results and you want to avoid outputting redundant data Moving termination control Outputs intermediate values to facilit...

Page 46: ...ol Further settings for this example SENSe Sensor AVERage TCONtrol REPeat The measurement is started by the trigger event Due to the chopper phases one measurement lasts twice the defined aperture time As defined by the average count after 4 measurements the result is averaged and available During the whole mea surement cycle the trigger synchronization is high TRIGger SYNC STATe ON 1 2 3 4 5 6 7 ...

Page 47: ... During the settling phase the amount of the result is already correct but the noise is higher After 4 measurements when the average count is reached settled data is available When the trigger count is reached TRIGger COUNt on page 51 the power sensor returns to the idle state 1 3 4 2 5 6 7 8 1 Start of the measurement cycle 2 Trigger events 3 Noninverted chopper phase 4 Inverted chopper phase 5 T...

Page 48: ...NSe Sensor TRACe AVERage COUNt 2 SENSe Sensor TRACe AVERage STATe ON Example Repeating termination control Further settings for this example SENSe Sensor TRACe AVERage TCONtrol REPeat Every chopper phase is started by a trigger event and lasts the defined trace time Dur ing a chopper phase the trigger synchronization is high TRIGger SYNC STATe ON After 2 chopper phases 1 measurement is completed A...

Page 49: ...ment cycle 2 Trigger events 3 Noninverted chopper phase 4 Inverted chopper phase 5 Trigger synchronization 6 Averaged trace data result after trace average count is reached 7 Trace measurement result before average count is reached 8 Return to the start of the measurement cycle Example Average count 1 SENSe Sensor TRACe AVERage COUNt 1 For average count 1 the setting of the termination control has...

Page 50: ...ger ATRigger STATe is set to ON Sets the delay between the artificial trigger event and the beginning of the actual mea surement Parameters delay Range 0 1 to 5 0 RST 0 3 Default unit Seconds TRIGger ATRigger EXECuted Queries the number of measurements that were triggered automatically since TRIGger ATRigger STATe was set to ON In normal scalar measurements this number can only be 0 or 1 If a buff...

Page 51: ...e with measurements that have been trig gered externally or by TRG without having to start the measurement multiple times Parameters count Range 1 to 2147483646 RST 1 Example See Chapter 9 2 Performing a buffered continuous average measurement on page 120 TRIGger DELay delay Sets the delay between the trigger event and the beginning of the actual measurement integration Parameters delay Range 5 0 ...

Page 52: ... HYSTeresis hysteresis Sets the hysteresis A trigger event occurs if the trigger level Falls below the set value on a rising slope Rises above the set value on a falling slope Thus you can use this setting to eliminate the effects of noise in the signal for the edge detector of the trigger system Parameters hysteresis Range 0 00 to 10 00 RST 0 00 Default unit DB TRIGger IMMediate Causes a generic ...

Page 53: ...unit Watts TRIGger LEVel UNIT unit Sets the unit of the trigger level if this value is entered without a unit See also TRIGger LEVel on page 53 Parameters unit DBM W DBUV RST W TRIGger SENDer PORT sender_port Selects the port where the power sensor outputs its own trigger event in case it is trig ger sender See TRIGger SENDer STATe for more information If the power sensor is the trigger sender it ...

Page 54: ...he power sensor has two external trigger connec tors If you trigger the trigger sender externally use EXTernal1 as external trigger input port trigger source and EXTernal2 as trigger sender output port or vice versa Parameters state RST OFF TRIGger SLOPe slope Effective only if TRIGger SOURce is set to INTernal or EXTernal Determines which edge of the envelope power with internal triggering or inc...

Page 55: ...others and has returned to the idle state 1 1 measurement time During the measurement the trigger synchronization is high For a continuous average measurement the measurement time is calculated as described in Chapter 8 6 1 4 Calculating the measurement time on page 57 For a trace or timeslot measurement one measurement cycle is one sweep For details on trigger states see Chapter 8 5 2 1 Trigger s...

Page 56: ...tions caused by modulation Parameters state ON OFF RST OFF Example SMO STAT OFF 8 6 1 3 Measuring modulated signals When measuring modulated signals in continuous average mode the measurement can show fluctuation due to the modulation If that is the case adapt the size of the sampling window exactly to the modulation period to get an optimally stable display If the modulation period varies or is n...

Page 57: ...r phase 8 6 1 5 Configuring the result buffer SENSe Sensor POWer AVG BUFFer CLEar 57 SENSe Sensor POWer AVG BUFFer COUNt 57 SENSe Sensor POWer AVG BUFFer SIZE 57 SENSe Sensor POWer AVG BUFFer STATe 58 SENSe Sensor POWer AVG BUFFer CLEar Clears the contents of the result buffer Example BUFF CLE Usage Event SENSe Sensor POWer AVG BUFFer COUNt Queries the number of results that are currently stored i...

Page 58: ...RST OFF Example BUFF STAT OFF 8 6 2 Burst average measurement The burst average mode is used to measure the average power of bursts The integra tion time of a measurement is not predefined but determined by the power sensor with the aid of a burst detector The start of a burst is detected when the measurement sig nal rises above a set trigger level The measurement ends when the signal drops below ...

Page 59: ...cluded from the measurement see Chapter 8 7 3 Excluding intervals on page 78 8 6 2 3 Triggering a burst average measurement In burst average mode only internal trigger events from the signal are evaluated irre spective of the setting of the TRIGger SOURce parameter The TRIGger DELay parameter is also ignored so that the measurement interval begins exactly when the signal exceeds the trigger level ...

Page 60: ...parameter to ensure that the beginning of the first slot to be mea sured coincides with the delayed trigger point 8 6 3 2 Defining a time interval for the measurement At the beginning and at the end of the measurement interval you can define time inter vals that are excluded from the measurement see Chapter 8 7 3 Excluding intervals on page 78 8 6 3 3 Configuring the time slots SENSe Sensor POWer ...

Page 61: ...from the measure ment See Figure 8 3 The parameter applies to each individual timeslot Note Even if the exclusion interval exceeds the timeslot because for example its right limit is outside the timeslot correct results are obtained In the extreme case where the interval length has been set to a value greater than the timeslot length 0 W is out put as the measured power No error message is output ...

Page 62: ...sor BWIDth VIDeo 62 SENSe Sensor BWIDth VIDeo LIST 63 SENSe Sensor BWIDth VIDeo value Available in trace and statistics modes Reduces the video bandwidth thus increasing the trigger sensitivity and reducing the display noise To prevent signals from being corrupted do not select a video bandwidth smaller than the RF bandwidth of the measurement signal If you reduce the video bandwidth the sampling ...

Page 63: ...sor TRACe POINts 65 SENSe Sensor TRACe POINts FPGA 65 SENSe Sensor TRACe TIME 65 SENSe Sensor TRACe TIME FPGA 66 SENSe Sensor TRACe AVERage COUNt count Available in trace and statistics modes Sets the number of readings that are averaged for one measured value The higher the count the lower the noise and the longer it takes to obtain a measured value Averaging is only effective if SENSe Sensor TRA...

Page 64: ...titions is equal to the set average count If the average count is large the measurement time can be very long The average count is set using SENSe Sensor TRACe AVERage COUNt RST REPeat Example TRAC AVER TCON REP SENSe Sensor TRACe AVERage STATe state Enables or disables the averaging filter Parameters state RST ON SENSe Sensor TRACe FFT WINDow window Selects a window function for computing a fast ...

Page 65: ... The start of recording relative to the trigger event is set using TRIGger DELay Parameters time Range Depends on the trigger delay RST 0 0 Default unit Seconds Example TRAC OFFS TIME 1 0 SENSe Sensor TRACe POINts points Sets the number of required values per trace sequence Parameters points Range 1 to 8192 RST 200 SENSe Sensor TRACe POINts FPGA Queries the number of points used internally by the ...

Page 66: ...ch trace separately Amplitude Time s 0 100 Pulse top Pulse base 0 Pulse stop Pulse start Pulse width Rising edge Falling edge Pulse period Figure 8 4 Pulse characteristics For information on querying the measurement results see Chapter 8 9 5 Pulse analy sis measurement results on page 99 8 6 5 1 Enabling the pulse analysis measurement Pulse analysis measurements are performed in trace mode Select ...

Page 67: ...RST 0 0 Default unit s 8 6 5 3 Defining reference levels for pulse analysis measurements Define the reference levels for the pulse timing All values are specified in percent of the pulse amplitude Remote commands SENSe Sensor TRACe MEASurement ALGorithm 67 SENSe Sensor TRACe MEASurement DEFine DURation REFerence 68 SENSe Sensor TRACe MEASurement DEFine TRANsition HREFerence 68 SENSe Sensor TRACe M...

Page 68: ... base power Suitable for distance measuring equipment DME pulses RST HISTogram SENSe Sensor TRACe MEASurement DEFine DURation REFerence reference Sets the pulse width pulse start time and pulse stop time Used for the measurement of pulse duration and period Parameters reference Specified in percent of the pulse amplitude Range 0 0 to 100 0 RST 50 0 Default unit PCT SENSe Sensor TRACe MEASurement D...

Page 69: ...easurement speed decreases because several successive measurements are nec essary Parameters value ON OFF RST ON SENSe Sensor TRACe MEASurement TRANsition ESAMpling AUTO val Available in pulse analysis measurements Enables or disables the automatic equivalent sampling that allows for high resolution measurements The automatic equivalent sampling requires a periodic measurement signal The power sen...

Page 70: ...mples is collected Two functions for analyzing the statistical distribution of the envelope power are availa ble Complementary cumulative distribution function CCDF Probability that the envelope power is higher than the corresponding x axis power value Linear or logarithmic scale 0 001 100 0 dBm 30 10 0 10 20 1 2 Figure 8 5 CCDF measurement parameters 1 Average power 2 Peak power Probability densi...

Page 71: ... following commands SENSe Sensor STATistics EXCLude MID OFFSet TIME 71 SENSe Sensor STATistics EXCLude MID TIME 71 SENSe Sensor STATistics OFFSet TIME 72 SENSe Sensor STATistics TIME 72 SENSe Sensor STATistics EXCLude MID OFFSet TIME time Sets the start of an exclusion interval in the analysis window referenced to the start of the analysis window All other settings are the same as for the timeslot...

Page 72: ... unit s SENSe Sensor STATistics TIME time Sets the duration of the statistics measurement Parameters time Range 50 0e 9 to 53 RST 0 01 Default unit s 8 6 6 2 Configuring the video bandwidth See Chapter 8 6 4 1 Configuring the video bandwidth on page 62 8 6 6 3 Triggering a statistics measurement You can trigger the statistical analysis by INTernal EXTernal or IMMediate trigger sources See Chapter ...

Page 73: ...meters points Range Depends on the number of pixels RST 200 0 SENSe Sensor STATistics SCALe X RANGe range Sets the level range width of the measurement result The level range width divided by N 1 where N is the number of pixels has to equal at least the highest attainable level resolution queried by SENSe Sensor STATistics SCALe X MPWidth N is the number of pixels set by SENSe Sensor STATistics SC...

Page 74: ...7 SENSe Sensor AVERage STATe 77 SENSe Sensor AVERage COUNt count Sets the number of readings that are averaged for one measured value The higher the count the lower the noise and the longer it takes to obtain a measured value Average count is often also called averaging factor but it designates the same thing i e the number of measured values that have to be averaged for forming the measure ment r...

Page 75: ...rst average and timeslot provided the particular power sensor supports them This command is only effective if the auto average calculation is enabled SENSe Sensor AVERage COUNt AUTO ON SENSe Sensor AVERage COUNt AUTO TYPE NSR The noise component is defined as the magnitude of the level variation in dB caused by the inherent noise of the power sensor two standard deviations The query returns the re...

Page 76: ...mpletely remains unchanged Use this command if High averaging factor is set SENSe Sensor AVERage COUNt Intermediate values are output as measurement results SENSe Sensor AVERage TCONtrol MOVing Power has significantly decreased since the previous measurement for example by several powers of 10 In this situation previous measurement results which are still contained in the averag ing filter strongl...

Page 77: ...he average count is large the measurement time can be very long The average count is set using SENSe Sensor AVERage COUNt on page 74 RST REPeat Example AVER TCON REP SENSe Sensor AVERage STATe state Available in continuous average burst average and timeslot modes Enables or disables the averaging filter Parameters state RST ON 8 7 2 Setting the frequency The frequency of the signal to be measured ...

Page 78: ...ing interval at the beginning 3 Excluding interval at the end 4 Integration interval Remote commands SENSe Sensor TIMing EXCLude STARt 78 SENSe Sensor TIMing EXCLude STOP 78 SENSe Sensor TIMing EXCLude STARt exclude_start Available in burst average and timeslot modes Sets a time interval at the beginning of bursts that is excluded from the measurement See Figure 8 7 Parameters exclude_start Range ...

Page 79: ...nal is active when pulse modulated signals are corrected The duty cycle is only evaluated in the continu ous average mode Remote commands SENSe Sensor CORRection DCYCle 79 SENSe Sensor CORRection DCYCle STATe 79 SENSe Sensor CORRection DCYCle duty_cycle Available in continuous average mode Sets the duty cycle for measuring pulse modulated signals The duty cycle defines the percentage of one period...

Page 80: ...ers offset Range 200 00 to 200 00 RST 0 Default unit dB SENSe Sensor CORRection OFFSet STATe state Enables or disables the offset correction Parameters state RST OFF Example CORR OFFS STAT ON 8 7 4 3 S parameter correction S parameter correction compensates for the losses and reflections introduced by a component such as an attenuator directional coupler or matching pad that is attached to a power...

Page 81: ...orrection on page 80 Parameters num Range 1 to 1999 RST 1 can differ if a calibration set defines another value SENSe Sensor CORRection SPDevice STATe state Enables or disables the S parameter correction If activated uses the S parameter data set selected by SENSe Sensor CORRection SPDevice SELect See also Chapter 8 7 4 3 S parameter correction on page 80 Parameters state RST OFF can differ if a c...

Page 82: ...lex reflection coefficient Γsensor of the power sensor and the reflection of port 2 is expressed by s22 see Figure 8 9 If the S parameter cor rection is enabled this interaction is always considered regardless whether gamma correction is performed or not Sensor Source S21 S12 S22 S11 NRP 3 Path Diode Power Sensor MHz to GHz 100 pW to 200 mW 70 dBm to 23 dBm SMART SENSOR TECHNOLOGY Figure 8 9 Corre...

Page 83: ...fficient of the source Γsource Parameters phase Range 360 0 to 360 0 RST 0 0 8 7 4 5 Using the S Parameters program The S Parameters program helps loading an S parameter table into the power sensor The S Parameters program is part of the R S NRP Toolkit see Chapter 5 1 R S NRP Toolkit on page 20 To start the S Parameters program In the Windows start menu select NRP Toolkit S Parameter Update Multi...

Page 84: ...5 Global Flags 86 S Parameter Correction ON by Default 86 S Parameter Correction State Locked 86 S Parameter Device Locked 86 Use Flags in Factory Cal Data Set 87 Device table 87 Menu bar Contains the following submenus File Menu bar Provides options for loading and saving calibration data files see To change the S parameter data on page 89 To load an uncertainty parameter file on page 90 Configur...

Page 85: ...rol timeouts and dis playing calibration data as plain text User Data Options Menu bar Opens the User Data dialog Here you can enter the name of the calibration laboratory and the calibration engineer that is stored in the calibration data set if changes are made Remote Options Menu bar Opens the Remote Control Settings dialog It is normally not necessary to change timeouts Show Cal Data Options M...

Page 86: ...obal Flags If enabled the state that is selected with S Parameter Correction ON by Default is locked and cannot be changed using SENSe Sensor CORRection SPDevice STATe R S NRP2 base unit S Parameter Device Locked Global Flags If enabled the S parameter device that is selected as the default device in the table of S parameter devices is locked and cannot be changed using SENSe Sensor CORRection SPD...

Page 87: ...tory calibration data set prevent it Device table Shows a list of all S parameter devices that are available in the calibration data set If you double click an entry a dialog for the device is opened that allows to import export and edit S parameter data See To change the S parameter data on page 89 Performing configuration tasks In this chapter different configuration tasks performed with the pow...

Page 88: ...econnect ing the power sensor you can reload the list by clicking Rebuild List 4 Click Upload to load calibration data from the power sensor After the upload is finished the OK button is enabled 5 Click OK to apply the changes If you want to discard the changes exit the dialog by clicking Cancel After a successful upload the name and serial number are shown in the name of the main dialog Configuri...

Page 89: ...ere you can select the location to save the calibration data To change the S parameter data 1 In the device table double click an entry See also Device table on page 87 2 Select File Import S2P 3 Select the S2P file you want to import 4 Confirm with Open The data from the selected file is loaded in the device table All uncertainties are set to zero Configuring basic measurement parameters ...

Page 90: ... power sensor itself and the minimum attenuation of the S parameter device If the Upper Power Limit W entry is higher than the power dissipation rating of the attenuator reduce it accordingly 8 Click OK to apply the changes If you want to discard the change click Cancel To load an uncertainty parameter file 1 In the device table double click an entry See also Device table on page 87 2 Select File ...

Page 91: ... data to the power sensor a confirmation message is displayed The power sensor can be used with the new S parameter data S2P measurement data files S2P files are human readable text files that contain header information and the com plex S parameters of the device under test in columns This chapter briefly describes the format of the S2P file An S2P measurement data file has the following structure...

Page 92: ...ement frequencies The measurement frequencies are listed in ascending order and are specified as follows fi s11 fi s21 fi s12 fi s22 fi where fi is the i th frequency and sjk fi is the display format as specified in the option line sjk fi arg sjk fi Display format for linear magnitude and phase in degree MA 20 lg sjk fi arg sjk fi Display format for magnitude in dB and phase in degree DB Re sjk fi...

Page 93: ...ied as follows fi unc s11 fi unc s21 fi unc s12 fi unc s22 fi where fi is the i th frequency and unc sjk fi is the uncertainty of the S parameters that is forwarded as follows As extended absolute uncertainty k 2 for the magnitude of reflection parameters s11 and s22 As extended uncertainties k 2 in dB for the magnitude of transmission parameters s21 and s12 Comments Any line starting with an excl...

Page 94: ...e most significant byte Fulfills the Little Endian little end comes first convention used by x86 x64 CPUs for example SWAPped The 1st byte is the most significant byte the 4th 8th byte the least significant byte Fulfills the Big Endian big end comes first convention RST NORMal Example FORM BORD NORM FORMat SREGister sregister Specifies which format is used for the return value of STB Parameters sr...

Page 95: ...RST ASCii 0 8 9 Querying measurement results After the measurement you can query the measurement results 8 9 1 Continuous average measurement results FETCh Sensor ARRay POWer AVG 95 FETCh Sensor SCALar POWer AVG 95 SENSe Sensor POWer AVG BUFFer DATA 96 FETCh Sensor ARRay POWer AVG Queries the last valid measurement result of a buffered continuous average measure ment To configure the measurand use...

Page 96: ...before the measurement is initi ated Usage Query only 8 9 3 Timeslot measurement results SENSe Sensor TRACe DATA on page 96 FETCh Sensor SCALar POWer TSLot Queries the last valid measurement result To configure the measurand use CALCulate FEED before the measurement is initi ated Usage Query only 8 9 4 Trace measurement results SENSe Sensor TRACe DATA 96 SENSe Sensor TRACe FFT DATA 98 SENSe Sensor...

Page 97: ...re interpreted as the size of the content LLLLL Number consisting of as many digits as specified by n This number gives the size of the content User data content See also Figure 8 13 As many bytes as specified by LLLLL LF Single linefeed character Examples The arbitrary block response data for a user data that contains 45182 bytes is 545182xxxxxx xxxxxx LF The arbitrary block response data for a u...

Page 98: ... 5 User data Measurement result values in the format that is described by the data type Currently IEEE754 float only If no SENSe Sensor AUXiliary measurands have been activated before execut ing the measurement the user data content is finished here In case that auxiliary measurands have been selected the above section is repeated for every auxiliary measurand The user data content looks like AVGf...

Page 99: ... values are used in the FFT 28 Number of values returned The number of computed values is half the number of used values Distance of the spectral lines in Hz Equals the reciprocal of the trace length which is set by SENSe Sensor TRACe TIME Note The spectrum computed as described is the spectrum of the envelope power different from the results displayed by a spectrum analyzer For questions on detai...

Page 100: ...ULSe SEParation 102 SENSe Sensor TRACe MEASurement TRANsition NEGative DURation 102 SENSe Sensor TRACe MEASurement TRANsition NEGative OCCurrence 102 SENSe Sensor TRACe MEASurement TRANsition POSitive DURation 102 SENSe Sensor TRACe MEASurement TRANsition POSitive OCCurrence 103 SENSe Sensor TRACe MEASurement TRANsition SPERiod 103 SENSe Sensor TRACe MEASurement OFFSet TIME time Sets the start tim...

Page 101: ...tween the first positive edge and the subsequent negative edge of the pulse where the edges occur at crossings of the mid threshold If the pulse period and thus the duty cycle cannot be determined NaN for not a num ber is returned Usage Query only SENSe Sensor TRACe MEASurement PULSe PERiod Queries the time between two consecutive edges of the same polarity in seconds Dur ing this time the pulse s...

Page 102: ...nsition from the pulse top level to the pulse base level The value is read from the first falling edge in the analysis interval If the pulse period and thus the duty cycle cannot be determined NaN for not a num ber is returned Usage Query only SENSe Sensor TRACe MEASurement TRANsition NEGative OCCurrence Queries the time when the signal passes through the medial reference power level with falling ...

Page 103: ... 5 2 Power related pulse analysis results Remote commands SENSe Sensor TRACe MEASurement POWer AVG 103 SENSe Sensor TRACe MEASurement POWer HREFerence 104 SENSe Sensor TRACe MEASurement POWer LREFerence 104 SENSe Sensor TRACe MEASurement POWer MAX 104 SENSe Sensor TRACe MEASurement POWer MIN 104 SENSe Sensor TRACe MEASurement POWer PULSe BASE 104 SENSe Sensor TRACe MEASurement POWer PULSe DROop 10...

Page 104: ...e Usage Query only SENSe Sensor TRACe MEASurement POWer MAX Queries the maximum power measured within the analysis window Unit Watts Usage Query only SENSe Sensor TRACe MEASurement POWer MIN Queries the minimum power measured within the analysis window Unit Watts Usage Query only SENSe Sensor TRACe MEASurement POWer PULSe BASE Queries the pulse base power level detected by the selected analysis al...

Page 105: ...hm This value is used as a refer ence 0 to determine other parameter values such as the rising or falling thresholds Usage Query only SENSe Sensor TRACe MEASurement POWer REFerence Queries the power level at reference level See SENSe Sensor TRACe MEASurement DEFine DURation REFerence Usage Query only SENSe Sensor TRACe MEASurement TRANsition NEGative OVERshoot Queries the height of the local minim...

Page 106: ...e Sensor STATistics POWer AVG Queries the average power of the measured signal Usage Query only SENSe Sensor STATistics POWer PEAK Queries the peak power value of the current statistics measurement You can send this query after the measurement or while it is running At the start of a new measurement the peak power value of the previous measure ment is deleted If you want to evaluate the peak power...

Page 107: ...oing is recommended if The temperature has varied by more than 5 K The power sensor has been replaced No zeroing was performed in the last 24 hours Signals of very low power are to be measured for instance if the expected mea sured value is less than 10 dB above the lower measurement range limit Turn off all test signals before zeroing An active test signal during zeroing causes an error Remote co...

Page 108: ...data set to the power sensor the current S parameter correction settings become invalid Safe operation of the power sensor is only possible if the SELect and STATe commands are repeated after download See also SENSe Sensor CORRection SPDevice STATe SENSe Sensor CORRection SPDevice SELect Parameters caldata block_data CALibration USER DATA LENGth Queries the length of the user calibration data bloc...

Page 109: ...nel 1 to 4 Measurement channel if more than one channel is available Parameters state ONCE Only valid parameter for this command 0 Return value if no calibration is in progress RST ONCE Example CLS CAL1 ZERO AUTO ONCE Performs zeroing Takes several seconds SYST SERR Query 240 Response Warning Zero Calibration failed Results Degrading 8 11 Testing The selftest allows a test of the internal circuitr...

Page 110: ... 112 SYSTem FWUPdate 112 SYSTem FWUPdate STATus 112 SYSTem HELP HEADers 113 SYSTem INFO 113 SYSTem INITialize 113 SYSTem LANGuage 113 SYSTem LED COLor 114 SYSTem LED MODE 114 SYSTem MINPower 114 SYSTem PARameters 115 SYSTem PARameters DELTa 115 SYSTem PRESet 115 SYSTem REBoot 115 SYSTem RESTart 116 SYSTem RUTime 116 SYSTem SERRor 116 SYSTem SUTime 116 SYSTem TLEVels 116 SYSTem TRANsaction BEGin 11...

Page 111: ...ation error queue and removes them from the queue Returns a comma separated list of error numbers but no error description Example SYST ERR CODE ALL Query 0 Response No errors have occurred since the error queue was last read out Usage Query only SYSTem ERRor CODE NEXT Queries the SCPI communication error queue for the oldest entry and removes it from the queue Returns the error number but no erro...

Page 112: ...te on page 28 If you want to integrate a firmware update function in an application see the example given in Chapter 6 2 2 Using remote control on page 30 Setting parameters fwudata block_data Definite length arbitrary block data containing the direct copy of the binary rsu file in the following format Single digit indicating how many digits follow to specify the size of the binary file Number tha...

Page 113: ... Type Stock Number Internal Stock Num ber Serial SW Build FPGA Build Sensor Name Tech nology Function MinPower MaxPower MinFreq Max Freq Resolution Impedance Coupling Cal Abs Cal Refl Cal S Para Cal Misc Cal Temp Cal Lin SPD Mnemonic TestLimit TestLimit pd Uptime Usage Query only SYSTem INITialize Sets the power sensor to the standard state i e the default settings for all test parame ters are loa...

Page 114: ...atus LED is user controlled SYST LED COL H01a00000 The LED flashes slowly in red SYSTem LED MODE SENSor The system status LED is controlled by the power sensor firm ware SYSTem LED MODE mode Sets whether the color of the system status LED is controlled by the power sensor firm ware or by the user settings For more information see SYSTem LED COLor Parameters mode USER SENSor RST SENSor SYSTem MINPo...

Page 115: ...nemonics short form For example CALibration DATA is shortened to CALDATA as command token Usage Query only SYSTem PARameters DELTa Returns an XML output containing all commands that differ from the defined default status set by RST on page 37 The commands are accompanied by the same information as for SYSTem PARameters Usage Query only SYSTem PRESet Resets the power sensor The command essentially ...

Page 116: ...es the next static error if available Static errors as a rule prevent the execution of normal measurements Errors in SCPI communication are queried using SYSTem ERRor NEXT Usage Query only SYSTem SUTime update_time Effective only in the NRP legacy mode Relevant only in continuous measurement mode INITiate CONTinuousON Sets the status update time That is the maximum rate in which the power sensor c...

Page 117: ... specify a name the hostname is used as default Parameters sensorname Example SYST NAME InputModule X5 SYSTem VERSion Queries the SCPI version that the command set of the power sensor complies with Example SYST VERS Query 1999 0 Response SCPI version from 1999 Usage Query only 8 13 Using the status register Further information Chapter 10 2 Status reporting system on page 126 Contents General statu...

Page 118: ... 2 Reading the CONDition part STATus DEVice CONDition STATus OPERation CALibrating CONDition STATus OPERation CONDition STATus OPERation MEASuring CONDition STATus OPERation SENSe CONDition STATus OPERation TRIGger CONDition STATus QUEStionable CALibration CONDition STATus QUEStionable CONDition STATus QUEStionable POWer CONDition Usage Query only 8 13 3 Reading the EVENt part STATus DEVice EVENt ...

Page 119: ...s OPERation NTRansition value STATus OPERation MEASuring NTRansition value STATus OPERation SENSe NTRansition value STATus OPERation TRIGger NTRansition value STATus QUEStionable CALibration NTRansition value STATus QUEStionable NTRansition value STATus QUEStionable POWer NTRansition value Parameters value RST 0 8 13 6 Controlling the positive transition part STATus DEVice PTRansition value STATus...

Page 120: ...The RST sets the continuous average mode INITiate initiates the measurement After RST the trigger system is set to TRIGger SOURce IMMediate That means the power sensor starts measuring when the measurement is started without waiting for a trigger condition After the measurement has been completed FETCh Sensor SCALar POWer AVG delivers the result to the output queue from which it can be fetched 9 2...

Page 121: ... write SENS BUFF STAT ON SENSOR write TRIG COUN 17 Read out all errors Clear error queue SENSOR query SYST ERR ALL szBuf sizeof szBuf printf szBuf Start a single buffered measurement Since 17 trigger counts have been configured the single buffered measurement which becomes initiated by INIT IMM is not over until 17 physical measurements have been triggered SENSOR write INIT IMM The end of a physic...

Page 122: ... szBuf sizeof szBuf printf szBuf 9 3 Performing trace measurements RST Set the sensor s operation mode to trace SENSe FUNCtion XTIMe POWer Set the carrier frequency SENSe FREQuency 1 8e9 Set the number of points for the trace measurement Using 500 points usually represents a good compromise between USB transfer speed and resolution SENSe TRACe POINTs 500 Set the trace time It influences the time l...

Page 123: ...situations where an application blocks for a longer time until time out For example if a trigger is missing and thus no results are ever becoming availa ble For certain applications especially interactive ones it is not the desired behavior that you have to wait until a probably long timeout occurs In these cases start a mea surement and then enter a loop to poll the power sensor until the measure...

Page 124: ...te STAT OPER MEAS PTR 0 resetting the event information by an initial readout int iEvent 0 query STAT OPER MEAS EVEN iEvent Now starting the measurement write INIT IMM bool bMeasReady false poll until measurement is ready this loop could also check for cancel requests from the user or other break conditions while bMeasReady query STAT OPER MEAS EVEN iEvent bMeasReady iEvent 0x02 0 if bMeasReady sl...

Page 125: ... protocol interfaces 10 1 1 USB interface For remote control using USB connection the computer and the power sensors must be connected via the USB interface A USB connection requires the VISA library to be installed VISA detects and configures the R S power sensors automatically when the USB connection is established Apart from the USBTMC driver which comes with the installation of the R S NRP Too...

Page 126: ...oduct ID R S NRP18P 0x0143 R S NRP40P 0x017C R S NRP50P 0x017E Example USB 0x0AAD 0x0143 100001 0x0AAD is the vendor ID for Rohde Schwarz 0x0143 is the product ID for the R S NRP18P power sensor 100001 is the serial number of the particular power sensor 10 2 Status reporting system The status reporting system stores all information on the current operating state of the sensor and on errors which h...

Page 127: ...register ESR Associated standard event status enable register ESE SCPI defined operation status register Questionable status register which contains detailed information on the device Table 10 3 Used status byte bits and their meaning Bit no Short description Bit is set if 1 Device status register summary A sensor is connected or disconnected or when an error has occurred in a sensor depending on ...

Page 128: ...es a serious error which can be specified in greater detail by querying the standard event status register Chapter 10 2 4 Standard event status and enable register ESR ESE on page 132 6 RQS MSS Master status summary The sensor triggers a service request which happens if one of the other bits of this register is set together with its enable bit in the service request enable register SRE 7 Operation...

Page 129: ...ister STATus DEVice CONDition STATus DEVice EVENt Querying the static errors SYSTem SERRor Table 10 4 Used device status bits and their meaning Bit no Short description Bit is set if 0 Sum of bits 1 to 4 Sum combination of static error SERR bits 1 to 4 1 Measurement not possible 2 Erroneous results Static error exists The measurement result is possibly incor rect 3 Warning Static error exists Stat...

Page 130: ...ands If a setting command is sent via a different chan nel the power sensor indicates an error 200 Execution error sensor in LEGACY mode To leave the NRP legacy mode close the NRP legacy chan nel Either close the application which opened the NRP legacy channel or close at least the connection to the power sensor 10 2 3 Questionable status register Contains information on questionable sensor states...

Page 131: ... power status register Contains information whether the measured power values are questionable 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 Sensor measurement corrupt 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Figure 10 4 Questionable power status register Querying the register STATus QUEStionable POWer CONDition STATus QUEStionable POWer SUMMary EVENt Table 10 6 Used questionable power status bits and their meaning ...

Page 132: ... EVENt Table 10 7 Used questionable calibration status bits and their meaning Bit no Short description Bit is set if 1 Sensor calibration failed Zeroing of the power sensor was not successful 10 2 4 Standard event status and enable register ESR ESE The ESR is already defined in the IEEE 488 2 standard It is comparable to the EVENt register of a SCPI register The standard event status register can ...

Page 133: ...nt error occurs An error message with a number between 300 and 399 or a positive error number denoting the error in greater detail is entered in the error queue 4 Execution error The syntax of a received command is correct but the command can not be executed due to various marginal conditions An error mes sage with a number between 200 and 300 denoting the error in greater detail is entered in the...

Page 134: ...cription Bit is set if 0 Calibrating Summary of Operation calibrating status register exists 4 Measuring Summary of Operation measuring status register exists 5 Triggering Summary of Operation trigger status register exists 10 Sense summary Summary of Operation sense status register exists 10 2 5 1 Operation calibrating status register The CONDition register contains information whether a power se...

Page 135: ... STATus OPERation CALibrating SUMMary EVENt Table 10 10 Used operation calibrating status bits and their meaning Bit no Short description Bit is set if 1 Sensor calibrating Power sensor is being calibrated 10 2 5 2 Operation measuring status register The CONDition register contains information whether a power sensor is measuring The EVENt register contains information whether a measurement was sta...

Page 136: ...Ration MEASuring SUMMary EVENt Table 10 11 Used operation measuring status bits and their meaning Bit no Short description Bit is set if 1 Sensor measuring Power sensor is measuring 10 2 5 3 Operation trigger status register The CONDition register contains information whether a power sensor is waiting for a trigger event The EVENt register contains information whether the power sensor has been wai...

Page 137: ...scription Bit is set if 1 Sensor waiting for trigger Power sensor is waiting for a trigger event When the trigger event occurs the power sensor changes into the measuring state 10 2 5 4 Operation sense status register The CONDition register contains information whether a power sensor is being initial ized The EVENt register contains information whether an initialization was started or completed si...

Page 138: ...0 0 0 0 0 0 0 0 0 Figure 10 11 Operation sense status register Querying the register STATus OPERation SENSe CONDition STATus OPERation SENSe SUMMary EVENt Table 10 13 Used operation sense status bits and their meaning Bit no Short description Bit is set if 1 Sensor initializing Power sensor is being initialized Status reporting system ...

Page 139: ... for troubleshooting Do not apply a signal to the power sensor while the selftest is running If the selftest is carried out with a signal being present error messages can erroneously be output for the test steps Offset Voltages and or Noise Voltages Using remote control For a quick check send TEST SENSor For each test step PASS or FAIL is listed 11 3 Problems during a firmware update The firmware ...

Page 140: ...Docu mentation overview on page 9 or the CD ROM delivered with the power sensor 2 Perform the firmware update again 11 4 Contacting customer support Technical support where and when you need it For quick expert help with any Rohde Schwarz product contact our customer sup port center A team of highly qualified engineers provides support and works with you to find a solution to your query on any asp...

Page 141: ...f you do not have the original packaging use similar materials that provide the same level of protection Securing When moving the product in a vehicle or using transporting equipment make sure that the product is properly secured Only use items intended for securing objects Transport altitude Unless otherwise specified in the data sheet the maximum transport altitude without pressure compensation ...

Page 142: ... damage bent inner conductors broken contact springs and so on If the RF connectors are damaged stop using the power sensor Contact Rohde Schwarz customer service see Chapter 11 4 Contacting customer support on page 140 Checking the integrity of the RF connector 1 2 3 1 Perfectly formed contacts 2 Normal wear 3 Damaged contacts Checking the concentricity of the RF connector 1 2 3 1 Perfectly conce...

Page 143: ...hanol Further information To disconnect from the DUT on page 13 13 3 Storage Put plastic end caps on the RF connectors to protect them from damage Protect the power sensor against dust Ensure that the environmental conditions e g temperature range and climatic load meet the values specified in the data sheet 13 4 Disposal Rohde Schwarz is committed to making careful ecologically sound use of natur...

Page 144: ... developed a disposal concept for the eco friendly disposal or recycling of waste material As a manufacturer Rohde Schwarz completely fulfills its obligation to take back and dispose of electrical and electronic waste Contact your local service representative to dispose of the product Disposal ...

Page 145: ...r TSLot 96 FETCh Sensor SCALar POWer AVG 95 FORMat BORDer 94 FORMat SREGister 94 FORMat DATA 94 INITiate ALL 42 INITiate CONTinuous 42 INITiate IMMediate 42 SENSe Sensor POWer AVG APERture 56 SENSe Sensor POWer AVG BUFFer CLEar 57 SENSe Sensor POWer AVG BUFFer COUNt 57 SENSe Sensor POWer AVG BUFFer DATA 96 SENSe Sensor POWer AVG BUFFer SIZE 57 SENSe Sensor POWer AVG BUFFer STATe 58 SENSe Sensor PO...

Page 146: ...Sensor FUNCtion 39 SENSe Sensor SGAMma CORRection STATe 82 SENSe Sensor SGAMma MAGNitude 82 SENSe Sensor SGAMma PHASe 83 SENSe Sensor STATistics OFFSet TIME 72 SENSe Sensor STATistics POWer AVG 106 SENSe Sensor STATistics POWer PEAK HOLD 106 SENSe Sensor STATistics POWer PEAK RESet 107 SENSe Sensor STATistics POWer PEAK 106 SENSe Sensor STATistics SCALe X MPWidth 72 SENSe Sensor STATistics SCALe X...

Page 147: ...sition NEGative DURation 102 SENSe Sensor TRACe MEASurement TRANsition NEGative OCCurrence 102 SENSe Sensor TRACe MEASurement TRANsition NEGative OVERshoot 105 SENSe Sensor TRACe MEASurement TRANsition POSitive DURation 102 SENSe Sensor TRACe MEASurement TRANsition POSitive OCCurrence 103 SENSe Sensor TRACe MEASurement TRANsition POSitive OVERshoot 105 SENSe Sensor TRACe MEASurement TRANsition SPE...

Page 148: ...n 119 STATus QUEStionable CALibration SUMMary EVENt 118 STATus QUEStionable CONDition 118 STATus QUEStionable ENABle 119 STATus QUEStionable NTRansition 119 STATus QUEStionable POWer CONDition 118 STATus QUEStionable POWer ENABle 119 STATus QUEStionable POWer NTRansition 119 STATus QUEStionable POWer PTRansition 119 STATus QUEStionable POWer SUMMary EVENt 118 STATus QUEStionable PTRansition 119 ST...

Page 149: ...ME 117 TEST SENSor 109 TRIGger ATRigger DELay 50 TRIGger ATRigger EXECuted 50 TRIGger ATRigger STATe 50 TRIGger COUNt 51 TRIGger DELay 51 TRIGger DTIMe 51 TRIGger EXTernal 2 2 IMPedance 52 TRIGger HOLDoff 52 TRIGger HYSTeresis 52 TRIGger IMMediate 52 TRIGger LEVel 53 TRIGger LEVel UNIT 53 TRIGger SENDer PORT 53 TRIGger SENDer STATe 54 TRIGger SLOPe 54 TRIGger SOURce 54 TRIGger SYNC STATe 55 UNIT P...

Page 150: ... register 128 Diagnostics Selftest 139 Disconnecting Host interface 14 RF 13 Documentation overview 9 Download R S NRP Toolkit 20 Dropout time Trigger 44 DUT Connecting 12 Disconnecting 12 Duty cycle 79 E Electromagnetic interference EMI 12 Electrostatic discharge ESD 12 Enable register 132 ESE 132 ESR 132 Exclusion time 78 F Firmware update 22 28 Firmware Update for NRP Family 28 Preparing 28 Pro...

Page 151: ...Release notes 10 Remote control Basic measurement settings 74 Basics 125 Burst average measurement 58 Common commands 35 Continuous average measurement 55 Conventions 33 Ending measurement 41 Interfaces 125 Measurement mode 55 Notation 34 Preparing for measurement 39 Protocols 125 Pulse analysis measurement 66 Results 93 Starting measurement 41 Statistics measurement 70 Timeslot measurement 59 Tra...

Page 152: ...ation control 45 Test setup 12 Timeslot measurement 59 Trace measurement 61 122 Synchronized 123 Transporting 141 Trigger 42 Configuring 50 Dropout time 44 Event 43 Hold off time 45 Sources 43 States 43 Trigger I O connector 19 Troubleshooting 139 Firmware update 139 Selftest 139 Status information 139 Tutorials 9 U Uncertainty calculator 22 Units 33 Unpacking 11 Update file 28 USB connection 14 U...

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