SFRA45-Comms
Contents
1. SFRA45 Communications Manual NAL SFRA45 Sweep Frequency Response Analyzer SFRA45 communications manual IMPORTANT SAFETY INSTRUCTI ONS This equipment is designed to comply with BSEN 61010 1 Safety requirements for electrical equipment for measurement control and laboratory use observe the following precautions e Ensure that the supply voltage agrees with the rating of the instrument printed on the back panel before connecting the mains cord to the supply e his appliance must be earthed Ensure that the instrument is powered from a properly grounded supply e The inputs must not be connected to signals greater than is indicated on the front panel e Keep the ventilation holes on the underneath and sides free from obstruction e Do not operate or store under conditions where condensation may occur or where conducting debris may enter the case e There are no user serviceable parts inside the instrument do not attempt to open the instrument refer service to the manufacturer or his appointed agent Note Newtons4th Ltd shall not be liable for any consequential damages losses costs or expenses arising from the use or misuse of this product however caused SFRA45 communications manual ABOUT THI S MANUAL This manual gives details of the communication commands recognized by the SFRA45 series of instruments over RS232 USB or LAN For more general operating instructions for the instr2. Arguments Reply Example Notes A 22 SFRA45 communications manual DAV Data available query Returns data availability status DAV none Decimal equivalent of data available bits bitO new data available bitl data available bit2 new full sweep data available bit3 sweep data available bit4 streaming data available bitb more streaming data to come bit6 integration data available bit7 datalog data available START trigger sweep DAV 0 DAV 11 first data available DAV 11 DAV 11 DAV 15 full sweep data available DAV does not modify the status bits SFRA45 communications manual DAVER DAVER Function Set data available enable register Description Sets bits in the data available enable register to control which status bits set the data available bits in the status byte Format DAVER value Arguments decimal equivalent of data available bits bitO set bit O of status byte when new data available bitl set bit O of status byte when data available bit2 set bit 1 of status byte when new full sweep data available bit3 set bit 1 of status byte when sweep data available bit4 set bit 2 of status byte when streaming data available bitb set bit 2 of status byte if more streaming data is to come Reply none Example DAVER 4 set bit 1 in status byte only when full sweep data is ready Notes default value is 6 bit O of status byte is set whenever data is available bit 1 of stat
3. SPEED SPEED Function Sets the measurement speed Description Sets the minimum window size for the measurement FRA and LCR modes Format SPEED value SPEED WI NDOW time Arguments value FAST MEDI UM SLOW VSLOW VFAST WINDOW time window time in seconds Reply none Example SPEED SLOW Notes A 48 SFRA45 communications manual START START Function Start sweep Description Initiate sweep in those functions that have a sweep or resets filtering in others Format START Arguments none Reply none Example FSWEEP 100 50000 75000 START Notes A 49 SFRA45 communications manual STATUS STATUS Function Read back channel ranging status Description Read back condition of selected channel range number 1 16 range text overflow underflow status Format STATUS channel Or STATUS channel Arguments channel CH1 CH2 Reply range number range text over under ok 1 16 range as per RANGE command OVER if overflow LOW if underflow OK if in range Example STATUS CH1 6 3V OK Notes A 50 SFRA45 communications manual STOP STOP Function Stop sweep Description Stop an active sweep Format STOP Arguments none Reply none Example FSWEEP 100 50000 75000 START STOP Notes A 51 SFRA45 communications manual TCOMM TCOMM Function Read the Comments relating to tranformer Description Comments Format TCOMM Arguments none Reply Transformer Reference terminal terminated by
4. 2 4 1 amp 6 5 5 7 8 8 7 1 5 SFRA45 communications manual 2 Communication commands CLS CLS Function Clear status Description Clears the standard event status register Format CLS Arguments none Reply none Example CLS ESR 0 Notes 1 SFRA45 communications manual ESE ESE Function Set standard event status enable register Description Enable which bits of the standard event status register set the ESB bit in the serial poll status byte Format ESE value Arguments decimal equivalent of bits in standard event status enable register Reply can be read by ESE Example ESE 60 Notes The following bits in the standard event status enable register have been implemented bit O OPC operation complete bit 2 QYE unterminated query error bit 3 DDE device dependent error bit 4 EXE execution error bit 5 CME command interpretation error bit 7 PON power on event For example ESE 60 enables all the error bits so that the ESB bit in the serial poll status byte is set in the event of any error A 2 SFRA45 communications manual ESR ESR Function Standard event status register query Description Returns the contents of the standard event status register and clears it Format ESR Arguments none Reply decimal equivalent of bits in standard event status register Example ESR 33 Notes The following bits in the standard event stat
5. Sweep Settings LCR Mode B 5 112 113 117 121 161 162 163 164 165 166 169 170 171 B 6 SFRA45 communications manual 0 Off 1 Single 2 Dual Initial settings system settings O Program 1 1 Factory default 2 As last used Peak hold Sweep Settings 0 Off 1 On IP Address Remote settings LAN Entee address numbers Language System Settings O English 1 Italian AC Trim Enable Trim Settings 0 Disabled AC Trim Level trim Settings Enter numbers AC Trim Tolerance trim Settings Enter numbers Transformer Unshielded Length pur Enter figures Transformer Temperature DUT Enter figures Transformer Fluid Filled bur settings 0 Yes 1 No Transformer OLTC put enter figures DUT Mode DUT Settings O None 1 Power Transformers Phase Graph scaling sweep Settings 0 Auto 172 173 174 177 178 179 180 185 186 187 188 189 190 SFRA45 communications manual 1 Manual Phase Graph Sweep settings Enter figures Phase Graph min Sweep settings Enter figures Zero Offset Memory Program O Internal 1 USB Memory stick Data Program O Program 1 Results Action Program O Recall 1 Store 2 Delete Location Program Enter figures as required Set clock hours System Enter figures as required Set clock minutes System Enter figures as required Set clock Seconds System Enter figures as required Set date day System E
6. single integer data value single integer data value company product serial no version Oor1 single integer data value single integer data value single integer data value 10 data values RMS results single integer or real data value single integer data value single integer data value freq gain phase dB mag1 mag2 n lines of FRA data freq mag1 mag2 db phase gain n lines of GAINPH data freq resistance reactance impedance phase n lines of data A 71 SFRA45 communications manual MARKER on off frequency MODE type OUTPUT on off PHCONV convention PROGRAM function number PROGRAM RANGE ch ranging range RESOLU format RESULT function number REZERO SCALE channel factor SCALE channel SCREEN SPEED speed START STATUS channel STOP TCOMM comments TCOMM TCON conterminal TCOM TFA TFA TFA SWEEP TFLUID yes no TID identifier TID TMANU manufacturer TMANU TOLTC oltc TREF refterm TREF TRES resterm TRES TSER serial No TSER TTEMP temperature TTEMP TUNSHL length USER VERSION A 78 CR terminated text string single real data value Multiple data bit values range number range text over low ok Comments Connected Terminals freq gain phase dB magl mag2 n lines of TFA Data Identifier Manufacturer Reference Terminal Response Terminal Serial Number Temperature 3 CR terminated text strings datecode type cpu dsp fpg
7. CR Example TCOMM abcdefg Notes A 52 SFRA45 communications manual TCOMM TCOMM Function Transformer Comments Description Comments to state the condition of the DUT during measurement Format TCOMM Comments Arguments Comments Reply none Example TCOMM abcd Notes Max 20 Characters A 53 SFRA45 communications manual TCON TCON Function Read the Transformer Connected Terminals Description Transformed Connected Terminals Format TCON Arguments none Reply Transformer ID terminated by CR Example TCON 1 1 1 Notes A 54 SFRA45 communications manual TCON TCON Function Set Transformer Connected Terminal Description Sets the transformer Connected Terminal the identification of all test objects terminals that were connected together during the measurement Format TCON ConnTerminal Arguments ConnTerminal Reply none Example TCON al b1 cl Notes A 55 SFRA45 communications manual TFA TFA Function Set transfer function analyser mode Description Set transfer function analyser mode Format TFA Arguments Reply none Example TFA Notes This command has the same effect as MODE GAI NPH FRA GAINPH TFA are aliases for the same command A 56 SFRA45 communications manual TFA TFA Function transfer function analyser query Description Read transfer function analyser results Sets transfer function analyser mode if not already set Waits for next un
8. Celsius Reply none Example TTEMP 23 2 set temperature to 23 2 C Notes A 70 SFRA45 communications manual TUNSHL TUNSHL Function Set the length of unshielded Connection unit of the transformer Description Set the length of unshielded Connection unit of the transformer in mm Format TUNSHL length Arguments length in mm Reply none Example TUNSHL 22 set length to 22mm Notes A 71 SFRA45 communications manual USER USER Function Read the user data Description Returns up to 3 lines of user data Format USER Arguments none Reply 3 lines of ASCII terminated by CR Example USER Newtons4th Ltd R amp D department SFRA45 4 Notes A 72 SFRA45 communications manual VERSI O VERSI O Function Read the instrument code versions Description Returns an ASCII string with the details of the various parts of the instrument firmware Format VERSIO Arguments none Reply date code type cpu dsp fpga boot Examples VERSION PQ3504 1 2 01 2 20 2 20 2 02 Notes This data can be displayed on the screen by pressing SYSTEM then BACK 73 WAVEFO Function Description Format Arguments Reply Example Notes A 74 SFRA45 communications manual WAVEFO Set the output waveform Selects the output waveform for the signal generator WAVEFO type type None SINEWA TRIANG SQUARE NOISE RAMP FREQUE 500 WAVEFO TRIANG OUTPUT ON s
9. DAV Format FRA or FRA SWEEP or FRA SWEEP Arguments none or SWEEP Reply 6 data values separated by commas freq mag1 mag2 db phase gain one line per result for sweep data Example OUTPUT ON FRA FSWEEP 20 10 20E3 START DAV 3 DAV 15 FRA SWEEP data returned Notes FRA waits for next unread data FRA SWEEP does not wait for new data data can be read multiple times FRA GAINPH TFA are aliases for the same command A 27 SFRA45 communications manual FREQUE FREQUE Function Set the output frequency Description Sets the generator output frequency in Hz Format FREQUE frequency Arguments frequency in Hz Reply none Example FREQUE 5e4 set frequency to 50kHz Notes A 28 SFRA45 communications manual FSWEEP FSWEEP Function Set the frequency sweep parameters Description Sets the start frequency in Hz the end frequency the number of steps and log linear for the selected function Format FSWEEP steps start end type Arguments steps number of steps start start frequency in Hz end end frequency in Hz type LOGARI LINEAR Reply none Example MODE GAI NPH FSWEEP 50 1000 1e6 set 50 steps between 1kHz and 1MHz Notes It is not necessary to send all the arguments but if they must be in the specified order The same command is used for all the functions the data is applied to whichever function has been selected if valid such as gain phase analyser If the selected m
10. Format Arguments Reply Example Notes A 44 SFRA45 communications manual RESULT Access non volatile results stores Recall store or delete non volatile results store RESULT function number function RECALL STORE DELETE number 1 999 none RESULT RECALL 13 SFRA45 communications manual REZERO REZERO Function Rezero front end Description Request the DSP to re compensate for dc offset and compute a new autozero Format REZERO Arguments none Reply none Example REZERO Notes A 45 SCALE Function Description Format Arguments Reply Example Notes A 46 SFRA45 communications manual SCALE Set channel scale factor Set a multiplying scale factor for a given input channel SCALE channel factor channel CH1 CH2 factor multiplying scale factor none SCALE CH2 10 SFRA45 communications manual SCREEN SCREEN Function Read the screen data Description Returns a bit map of screen pixel display in ascii and hex format Format SCREEN Arguments none Reply Multiple data bit values Example SCREEN data returned Notes SCREEN response ASCII coded Hex 2 characters for each byte 240 lines of 40 bytes each line represents one line of the display preceded by H Each byte represents 8 dots where the Isb is the leftmost dot of the display The bit is set for on and cleared for off 47 SFRA45 communications manual
11. Function Sound the buzzer Description Makes a beep from the instrument Format BEEP Arguments none Reply none Example BEEP Notes A 18 SFRA45 communications manual BLANKI BLANKI Function Select blanking Description Enable or disable low value blanking Format BLANKI value threshold Arguments value ON OFF threshold threshold in appropriate units Reply none Example BLANKI OFF BLANKI ON 35 Notes A 19 SFRA45 communications manual CONFIG CONFIG Function Direct access of configuration parameters Description Sets configuration parameter for which there may not be a direct command Format CONFIG index data Arguments index is the number of the parameter data is the data for that parameter Reply none Example CONFIG 6 1 set phase convention Notes The list of configurable parameters is given in the appendix CONFIG goes through the same limit checking as when entering data from the menus A 20 SFRA45 communications manual CONFIG CONFIG Function Configurable parameter query Description Reads the present value of a single parameter Format CONFIG index Or CONFIG index Arguments index is the parameter number Reply Value of parameter real or integer as appropriate Example CONFIG 6 read phase convention 0 CONFIG 6 1 CONFIG 6 1 Notes The list of configurable parameters is given in the appendix A 21 DAV Function Description Format
12. Serial Poll status byte ESB MAV SDV RDV bit O RDV result data available set when results are available to be read as enabled by DAVER bit 1 SDV sweep data available set when sweep results are available to be read as enabled by DAVER bit 2 not used bit 3 not used bit 4 MAV message available set when a message reply is waiting to be read bit5 ESB standard event summary bit 1 4 set if any bit in the standard event status register is set as well as the corresponding bit in the standard event status enable register set by ESE SFRA45 communications manual 1 3 RS232 connections The RS232 port on the instrument uses the same pinout as a standard 9 pin serial port on a PC or laptop 9 pin male D type Pin Function Direction 1 in weak pull up 2 RX data in 3 TX data out 4 DTR out 5 GND 6 DSR not used 7 RTS out 8 CTS in 9 RI not used The instrument will only transmit when CTS pin 8 is asserted and can only receive if DCD pin 1 is asserted The instrument constantly asserts 12V pin 4 so this pin can be connected to any unwanted modem control inputs to force operation without handshaking The instrument has a weak pull up on pin 1 as many null modem cables leave it open circuit In electrically noisy environments this pin should be driven or connected to pin 4 To connect the instrument to a PC use a 9 pin female to 9 pin female null modem cable 1 amp 6 4 2 3 3
13. figures Low output amplitude dBm Generator Settings Enter dBm figures Am plitude step Generator Settings Enter dB figures Amplitude control Generator settings 0 Volts 1 dBm Sweep type Sweep Settings Step Type O Logarithmic 1 Linear Gain Graph scaling sweep Settings 0 Auto 1 Manual Gain Graph Sweep settings Enter figures Gain Graph min Sweep settings Enter figures Frequency marker Sweep Settings 0 Off 1 Single 2 Dual Marker frequency 1 Sweep Settings Marker on Enter figures Search for peak sweep Settings 0 Disable 1 Single 2 Dual N4L Clamps Ch1 Ch2 Inputs O No 1 Yes Marker frequency 2 Sweep Settings Marker on Enter figures 75 76 88 89 90 91 92 94 95 104 110 SFRA45 communications manual Graph FRA Settings 0 Dual 1 Gain 2 Phase Computation FRA Settings 0 CH2 CH1 1 CH1 CH2 Timebase Oscilloscope Settings Enter figures Trigger level Oscilloscope Settings Enter figures Pretrigger Oscilloscope Settings 1 25 2 50 3 75 Trigger polarity Oscilloscope Settings O Rising edge 1 Falling edge Trigger mode Oscilloscope Settings O Auto 1 Normal 2 Single shot Traces Oscilloscope Settings 0 5 1 Dual 2 CH2 Current Trigger channel oscilloscope Settings O CH1 1 CH2 Measurement LCR Settings 0 1 magnitude 1 Parallel circuit 2 series circuit Search for peak
14. for new data data can be read multiple times SFRA45 communications manual MARKER MARKER Function Set frequency marker Description Enable or disable frequency marker Format MARKER value frequency Arguments value Off Single Dual frequency marker frequency in Hz Reply none Example MARKER OFF MARKER Single 25e3 Notes It is not necessary to send the frequency when enabling the marker if it has already been set A 37 SFRA45 communications manual MODE MODE Function Set mode Description Sets the fundamental operating mode of the instrument Format MODE type Arguments type ACRMS LCR FRA SCOPE Reply none Example MODE LCR Notes MODE sets the measurement mode of the instrument A 38 SFRA45 communications manual OUTPUT OUTPUT Function Set output Description Turns the output on or off or sets the level mode to dBm or voltage Also specifies action at the end of a sweep Format OUTPUT type Arguments command OFF ON Reply none Example OUTPUT ON Notes For safety the output defaults to off and must be turned on explicitly A 39 PHCONV Function Description Format Arguments Reply Example Notes Notes A 40 SFRA45 communications manual PHCONV Set phase convention Set phase convention PHCONV convention convention 180 180 to 180 360 Oto 360 360 Oto 360 none PHCONV 360 Number O represents factory default which can only be
15. recalled SFRA45 communications manual PROGRA PROGRA Function Identify current program Description Reads the name of the last program to be loaded or recalled Format PROGRA Arguments none Reply text string Example PROGRA factory default Notes A 41 SFRA45 communications manual RANGE RANGE Function Set channel ranging Description Select minimum range and range control for a given input channel Format RANGE channel ranging range Arguments channel CH1 CH2 ranging AUTO UPAUTO MANUAL range nominal range value Reply none Example RANGE CH2 MANUAL 3V Notes A 42 SFRA45 communications manual RESOLU RESOLU Function Set the data resolution Description Data is returned in scientific format with exponent and mantissa The resolution of the mantissa may be selected to be 5 digit NORMAL or 6 digit HI GH Format RESOLU format Arguments format NORMAL 5 digit mantissa HI GH 6 digit mantissa BINARY raw binary format Reply none Example RESOLU HIGH Notes The resolution only changes the real number replies Data format for NORMAL is 1 2345E 00 Data format for HIGH is 1 23456E 00 The signs of the mantissa and exponent shown as in the above examples are only sent if they are negative Data format for BINARY is a proprietary floating point format which returns raw data in a minimum number of data bytes A 43 RESULT Function Description
16. 14 SFRA45 communications manual ACRMS VRMS Function Read true rms voltmeter results Description Reads back latest voltmeter results Waits for next unread data if necessary Clears new data available status bit Format ACRMS Arguments Reply 10 data values separated by commas Chl Vrms Ch2 Vrms Chl Ch2 Vdbm Ch1 Pk Ch2 Pk Ch1 CF Ch2 CF Ch1 Surge Ch2 Surge Example ACRMS Notes A 15 ACTRI M Function Description Format Arguments Reply Example Notes A 16 SFRA45 communications manual ACTRIM Set ac control parameters Sets the specified signal level tolerance and input channel for the ac control amplitude compression ACTRI M channel level tolerance channel DISABL CH1 CH2 level required ac level in V or A or dBm tolerance required accuracy in percent none ACTRI M CH1 1 0 5 1 0V 596 The level should be set in dBm if dBm mode is selected It is not necessary to send all the arguments but those that are sent must be in the correct sequence SFRA45 communications manual AMPLI T Function Set output amplitude Description Sets the output amplitude in Volts or dBm for the generator Format T amplitude Arguments peak amplitude in Volts or amplitude in dBm Reply none Example AMPLIT 0 5 set peak amplitude to 0 5V Notes The amplitude may be Volts or dBm A 17 SFRA45 communications manual BEEP BEEP
17. N All the functions of the instrument can be programmed via any interface and results read back The port to be used is selected by the REMOTE menu The commands are not case sensitive and white space characters are ignored e g tabs and spaces Replies from the instrument are always upper case delimited by commas without spaces Only the first six characters of any command are important any further characters will be ignored For example the command to set the generator frequency is FREQUE but the full word FREQUENCY may be sent as the redundant NCY at the end will be ignored Fields within a command are delimited by comma multiple commands can be sent on one line delimited with a semi colon Eg AMPLI T 1 5 OUTPUT ON Mandatory commands specified in the IEEEA88 2 protocol have been implemented e g IDN RST and all commands that expect a reply are terminated with a question mark 1 1 SFRA45 communications manual The instrument maintains an error status byte consistent with the requirements of the IEEEA88 2 protocol called the standard event status register that can be read by the mandatory command ESR see section 5 1 The instrument also maintains a status byte consistent with the requirements of the IEEE488 2 protocol that can be read by the mandatory command STB see section 5 2 The keyboard is disabled when the instrument is set to remote Press HOME to return to local op
18. a boot SFRA45 communications manual WAVEFO type ZERO ZERO DELETE A 79 SFRA45 communications manual calibration commands CALAPP CALCOM freq CALDCO value CALFI L index value CALFIL six real data values CALFRQ index freq CALFRQ seven real data values CALHF index value CALI BR index value CALI BR single integer data value CALI DS string CALI DS string CALOUT index value CALPHA index CALRES CALSAV password CALSNO serial number CALSTR string CALSTR string 80 SFRA45 communications manual Appendix B Configurable parameters All parameters can be accessed using the CONFIG command CONFIG parameter data Number Function System parameters 1 Operating mode Sets main mode RMS Voltmeter 1 Impedance Meter 2 Oscilloscope 4 Frequency Response Analyser 2 nterface Remote settings O RS232 1 USB 2 LAN 3 Bandwidth auto or wide Acquisition Settings 0 Wide 1 Low 2 6 Phase convention system Options 02 180 to 180 120 to 360 2 0 to 360 7 Output Generator settings 0 Off 1 On 8 Step message system Options 0 Disabled 1 Enabled 9 Keyboard beep on off system Options O Enabled 1 Disabled B 1 12 13 14 16 18 19 20 21 22 28 2 SFRA45 communications manual User Window FRA LCR Measurement Settings enter figure in sec S peed FRA LCR Measurement Settings OzVery Slow 1 Slow 2 Medium 3 Fast 4 V
19. eration RS232 data format is start bit 8 data bits no parity 1 stop bit Flow control is RTS CTS see section 5 2 baud rate is selectable via the REMOTE menu A summary of the available commands is given in the Appendix Details of each command are given in the communication command section of the manual Commands are executed in sequence except for two special characters that are immediately obeyed Control T 20 reset interface device clear Control U 21 warm restart 1 2 SFRA45 communications manual 1 1 Standard event status register PON EXE QYE OPC bit OPC operation complete cleared by most commands set when data available or sweep complete bit 2 QYE unterminated query error set if no message ready when data read bit3 DDE device dependent error set when the instrument has an error bit 4 EXE execution error set when the command cannot be executed bit 5 command interpretation error set when a command has not been recognised bit 7 PON power on event set when power first applied or unit has reset The bits in the standard event status register except for OPC are set by the relevant event and cleared by specific command ESR CLS RST OPC is also cleared by most commands that change any part of the configuration of the instrument such as MODE or START 1 3 SFRA45 communications manual 1 2
20. ery Fast 5 Window Filter FRA LCR Measurement Settings 0 Normal 1 Slow 2 None 3 None fast response Baud rate Remote Settings RS232 0 38400 Sweep steps Sweep Settings Enter step number figures Sweep start frequency Sweep Settings Enter figures Sweep stop frequency Sweep Settings Enter figures Sweep type sweep Settings 0 5 1 Continuous Resolution Remote Settings OzNormal 1 High CH1 input ranging input Settings O Full Autorange 1 Range Up Only 2 Manual 29 32 33 39 40 42 47 48 49 51 SFRA45 communications manual CH2 input ranging Input Settings FRA Only O Full Autorange 1 Range Up Only 2 Manual CH1 scale factor Input Settings Enter figures CH2 scale factor Input Settings Enter figures Brightness system Options O Low 1 High Display System Options 1 White on black 2 Black on white Enlarge results system Options O Off 1 On Display type Sweep Settings O Real time l Table 2 Graph Generator frequency Generator Settings Enter figures Low output amplitude V Generator Settings Low output Enter figures Generator waveform Generator Settings 0 Sinewave 1 Square wave 2 Triangle 3 Ramp 4 Noise B 3 52 53 54 55 56 60 61 62 63 64 65 66 67 68 B 4 SFRA45 communications manual Frequency step Generator Settings Enter figures Amplitude Step Generator Settings Enter
21. ine wave triangle wave square wave white noise ramp triangle wave SFRA45 communications manual ZERO Function Description Format LCR compensation Arguments Reply Example Notes ZERO Apply or remove the zero Applies or removes a zero function depending on the measurement mode same as pressing ZERO key Performs lead compensation in LCR mode ZERO ZERO DELETE ZERO DB offset ZERO PHASE offset ZERO SINGLE ZERO SWEEP steps start finish ZERO OPEN ZERO SHORT ZERO STORE ZERO RECALL offset offset value steps LCR sweep compensation steps start LCR compensation start frequency stop LCR compensation stop frequency none ZERO SWEEP 100 1e3 1e6 ZERO OPEN performs open circuit compensation A 75 SFRA45 communications manual Appendices COMMAND SUMMARY CONFIGURABLE PARAMETERS SFRA45 communications manual command format CLS ESE value ESE ESR DN OPC RST SRE value SRE STB TRG TST WAI ABORT ACRMS ACRMS ACTRI M channel level tol AMPLI T amplitude BEEP BLANKI on off threshold CONFIG parameter data CONFI G parameter DAV DAVER value DAVER FILTER type dynamics FRA FRA FRA SWEEP FREQUE frequency FSWEEP steps start end log GAI NPH GAI NPH GAI NPH SWEEP HOLD on off INPUT type impedance KEYBOA value LCR conditions param head LCR LCR SWEEP reply format
22. manual TRES TRES Function Read the Transformer Response Terminal Description Returns the transformer Response Terminal the identification of the test object terminal to which the response lead was connected Format TRES Arguments none Reply Transformer Response terminal terminated by CR Example TRES abcdefg Notes A 66 SFRA45 communications manual TRES TRES Function Set Transformer Response Terminal Description Sets the transformer Response Terminal the identification of the test object terminal to which the response lead was connected Format TRES ResTerm Arguments Restern Reply none Example TRES abcd Notes A 67 SFRA45 communications manual TSER TSER Function Read the Transformer Serial Number Description Returns the transformer Serial Number Format TSER Arguments none Reply Transformer Serial Number terminated by CR Example TSER 0123456789 Notes A 68 SFRA45 communications manual TSER TSER Function Set Transformer Serial Number Description Sets the transformer Serial Number Format TSER ID Arguments ID Reply none Example TSER 234 set transformer serial ID to 234 Notes A 69 SFRA45 communications manual TTEMP TTEMP Function Set the temperature of the test object dielectric during measurement Description Set the temperature of the test object dielectric during measurement Format TTEMP temperature Arguments Temperature in degree
23. nter figures as required Set date month System Enter figures as required Set date year System Enter figures as required B 7 Newtons4th Ltd contact details Please direct all queries or comments regarding the SFRA45 instruments or this manual to Newtons4th Ltd 30 Loughborough Rd Mountsorrel LOUGHBOROUGH LE12 7AT United Kingdom Tel 0116 230 1066 international 44 116 230 1066 Fax 0116 230 1061 international 44 116 230 1061 E mail address sales newtons4th com office newtons4th com web site www newtons4th com At Newtons4th Ltd we have a policy of continuous product improvement and are always keen to hear comments whether favourable or unfavourable from users of our products Please telephone fax write or e mail with your comments
24. ode Description Selects the input type of the instrument Format I NPUT type impedance Arguments type LOLEVEL impedance 500HMS HIIMPEDANCE Reply none Example NPUT LOLEVE HII MPE Notes The impedance value is only valid for the low level input A 33 SFRA45 communications manual KEYBOA KEYBOA Function Disable front panel keyboard Description The front panel keyboard can be disabled to prevent accidental operation Format KEYBOARD value Arguments value ENABLE DISABLE Reply none Example KEYBOARD DI SABLE Notes The keyboard can be re enabled from the front panel only by pressing the HOME key A 34 SFRA45 communications manual LCR LCR Function Set LCR meter mode Description Set LCR mode and model Format LCR model Arguments model I MPEDANCE SERIES PARALLEL Reply none Example LCR IMPEDA Notes A 35 LCR Function Description Format Or Or Arguments Reply Example Notes A 36 SFRA45 communications manual LCR LCR meter query Read LCR meter results Sets LCR meter mode if not already set Waits for next unread data if necessary Clears new data available bit read by DAV LCR LCR SWEEP LCR SWEEP none or SWEEP 5 data values separated by commas frequency resistance reactance impedance phase one line per result for sweep data OUTPUT LOLEVE LCR data returned LCR waits for next unread data LCR SWEEP does not wait
25. ode is not valid such as rms then the command is ignored and an execution error is flagged in the standard event status register sesr A 29 SFRA45 communications manual GAI NPH GAI NPH Function Set gain phase analyser mode Description Set gain phase analyser mode Format GAI NPH Arguments Reply none Example GAINPH Notes This command has the same effect as MODE GAINPH FRA GAINPH TFA are aliases for the same command A 30 SFRA45 communications manual GAI NPH GAI NPH Function Gain phase query Description Read gain phase analyser results Sets gain phase analyser mode if not already set Waits for next unread data if necessary Clears new data available bit read by DAV Format GAINPH or GAINPH SWEEP or GAINPH SWEEP Arguments none or SWEEP Reply 6 data values separated by commas freq mag1 mag2 db phase gain one line per result for sweep data Example OUTPUT ON GAI NPH FSWEEP 20 10 20E3 START DAV 3 DAV 15 GAI NPH SWEEP data returned Notes GAI NPH waits for next unread data GAINPH SWEEP does not wait for new data data can be read multiple times A 31 SFRA45 communications manual HOLD HOLD Function Set clear HOLD mode Description HOLD mode stops the instrument from updating the measured values Format HOLD value Arguments value ON OFF Reply none Example HOLD ON Notes A 32 SFRA45 communications manual INPUT INPUT Function Set input m
26. read data if necessary Clears new data available bit read by DAV Format TFA or TFA SWEEP or TFA SWEEP Arguments none or SWEEP Reply 6 data values separated by commas freq mag1 mag2 db phase gain one line per result for sweep data Example OUTPUT ON TFA FSWEEP 20 10 20E3 START DAV 3 DAV 15 TFA SWEEP data returned Notes TFA waits for next unread data TFA SWEEP does not wait for new data data can be read multiple times FRA GAINPH TFA are aliases for the same command A 57 SFRA45 communications manual TFLUI D TFLUID Function Set transformer fluid filled Description Sets the transformer fluid filled Yes or NOPE depending on whether the test object was fully filled with the normal operating fluid during measurement Format TFLUID type Arguments command YES NOPE Reply none Example TFLUID YES Notes A 58 SFRA45 communications manual TI D TI D Function Read the Transformer ID Description Returns the transformer ID Format TID Arguments none Reply Transformer ID terminated by CR Example TID 0123456789 Notes A 59 SFRA45 communications manual TID TID Function Set Transformer ID Description Sets the transformer ID Format TID ID Arguments ID Reply none Example TID 234 set transformer ID to 234 Notes A 60 SFRA45 communications manual TMANU TMANU Function Read the Transformer Manufacturer Description Returns the transformer Manufactu
27. rer Format TMANU Arguments none Reply Transformer Manufacturer ID terminated by CR Example TMANU Transformer Sols Notes A 61 SFRA45 communications manual TMANU TMANU Function Set Transformer Manufacturer ID Description Sets the transformer manufacturer ID Format TMANU manl D Arguments manl D Reply none Example TMANU ABCDEF set transformer manufacturer ID to ABCDEF Notes A 62 SFRA45 communications manual TOLTC TOLTC Function Transformer OLTC Description Sets the transformer OLTC tap position the tap position indicated on the test object during measurement Format TCOMM OLTC Arguments Comments Reply none Example TOLTC 21 Notes A 63 SFRA45 communications manual TREF TREF Function Read the Transformer Reference Terminal Description Returns the transformer Reference Terminal the identification of the test object terminal to which the reference and the source lead was connected Format TREF Arguments none Reply Transformer Reference terminal terminated by CR Example TREF abcdefg Notes A 64 SFRA45 communications manual TREF TREF Function Set Transformer Reference Terminal Description Sets the transformer Reference Terminal the identification of the test object terminal to which the reference and the source lead was connected Format TREF RefTerm Arguments Reftern Reply none Example TREF abcd Notes A 65 SFRA45 communications
28. s will be overwritten RST should be followed by an end of line not a message separator It may be helpful to follow it with a short pause to allow the new configuration to become active before sending further commands 6 SFRA45 communications manual SRE SRE Function Set service request enable register Description Enable which bits of the status byte register initiate a service request Format SRE value Arguments decimal equivalent of bits in status byte register Reply can be read by SRE Example SRE 1 generate a service request when data available Notes A 7 SRE Function Description Format Arguments Reply Example Notes A 8 SFRA45 communications manual SRE Read service request enable register Read back the present setting of the service request enable register SRE decimal equivalent of bits in status byte register that would generate a service request SRE 1 SFRA45 communications manual STB STB Function Read serial poll status byte Description Returns the decimal value of the serial poll status byte Format STB Arguments none Reply decimal value of the serial poll status byte Example STB 1 Notes The following bits in the serial poll status register have been implemented bit O RDV results data available bit 1 SDV sweep data available bit 3 ALA alarm active bit 4 MAV message available bit5 ESB s
29. tandard event summary bit A 9 SFRA45 communications manual TRG TRG Function Trigger Description Initiates a new measurement resets the ranging and filtering Format TRG Arguments none Reply none Example MODE VRMS TRG VRMS Notes A 10 SFRA45 communications manual TST TST Function Self test query Description Returns the results of self test Format TST Arguments none Reply single integer bit O set if uncalibrated bit 1 set if error with analogue zero gt 15 major system error Example TST 0 Notes A 11 SFRA45 communications manual WAI WAI Function Wait for operation complete Description Suspends communication until the previous operation has completed Format WAI Arguments none Reply none Example GAI NPH START WAI GAI NPH SWEEP Notes In the example the query command GAINPH SWEEP can be sent immediately after the WAI command and the sweep data will be returned as soon as the sweep has completed A 12 SFRA45 communications manual ABORT ABORT Function Abort sweep Description Abort an active sweep Format ABORT Arguments none Reply none Example FSWEEP 1000 1E5 5E5 START ABORT Notes A 13 SFRA45 communications manual ACRMS ACRMS Function Set up rms voltmeter Description Set mode to rms voltmeter Format ACRMS Arguments none Reply none Examples ACRMS Notes This has the same effect as MODE ACRMS A
30. ument refer to the user manual Each command is listed alphabetically with details of any arguments and reply A one line summary of each command is given in the appendix Although most of the commands apply to all instruments in the range there are some commands that are specific to one instrument or another The information in this manual is believed to be accurate and complete but Newtons4th Ltd cannot accept any liability whatsoever for any consequential damage or losses arising from any errors inaccuracies or omissions Revision 2 65 This manual is copyright 2008 2010 Newtons4th Ltd and all rights are reserved No part may be copied or reproduced in any form without prior written consent 16 January 2012 1 SFRA45 communications manual CONTENTS Using remote control i52 p eeu nee a es 1 1 Standard event status 1 2 Serial Poll status 1 3 5232 connections urectee rire ere are exar en kan SFRA45 communications manual SFRA45 communications manual 1 Using remote control The instrument is fitted with an RS232 serial communications port and USB port as standard and may have a LAN interface fitted as an option All the interfaces use the same ASCII protocol with the following end of line terminators Rx expects Tx sends RS232 carriage return carriage return USB line feed ignored and line feed LA
31. us byte is set when full sweep data is available A 23 SFRA45 communications manual DAVER DAVER Function Read data available enable register Description Read back present setting of the data available enable register which controls the status bits that set the data available bits in the status byte Format DAVER Arguments none Reply decimal equivalent of bits Example DAVER 4 Notes A 24 SFRA45 communications manual FI LTER FI LTER Function Select the filtering Description Sets the filter time constant and dynamic response Format FILTER type dynamics Arguments type NONE NORMAL SLOW dynamics AUTO FIXED Reply none Example FILTER NORMAL FIXED FILTER NONE Notes It is not necessary to send both parameters if it is only required to set the type Both arguments must be sent to set the dynamics A 25 SFRA45 communications manual FRA FRA Function Set frequency response analyser mode Description Set frequency response analyser mode Format FRA Arguments Reply none Example FRA Notes This command has the same effect as MODE GAI NPH FRA GAINPH TFA are aliases for the same command A 26 SFRA45 communications manual FRA FRA Function frequency response analyser query Description Read frequency response analyser results Sets frequency response analyser mode if not already set Waits for next unread data if necessary Clears new data available bit read by
32. us register have been implemented bit OPC operation complete bit 2 QYE unterminated query error bit 3 DDE device dependent error bit 4 EXE execution error bit 5 CME command interpretation error bit 7 PON power on event For example if a command is sent incorrectly and is not recognised the CME bit will be set and the value of 33 will be returned A 3 SFRA45 communications manual I DN DN Function Identify query Description Returns a standard format identification string Format DN Arguments none Reply An ASCII string in the IEEEA88 2 format manufacturer model serial no version Example DN NEWTONSATH PSI METRI Q 01234 1 00 Notes 4 SFRA45 communications manual OPC OPC Function Test for operation complete Description Returns 1 if previous operation is completed O if not Format OPC Arguments none Reply Oorl Example START OPC 0 OPC 0 OPC 1 Notes OPC can be used to indicate when data is available or when a frequency sweep has completed A 5 SFRA45 communications manual RST RST Function Reset Description Resets the instrument to the default state and clears the standard event status register Format RST Arguments none Reply none Example RST Notes The RST command loads the default configuration This is the same as loading the default configuration the PROGRAM menu Any preceding setup command
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