SLM3505 Comms Manual v2_66
Contents
1. 1 1 Standard event status register PO CM EX DD QY OP N E E E E 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 bit 3 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 CME command interpretation error set when a command has not been recognised bit 7 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 SLM3505 communications manual 1 2 Serial Poll status byte ES MA SD RD B V V V bit 0 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 set if any bit in the standard event status register is set as well as the corresponding bit in the standard event status enable register2. Newtons4th Ltd SLM3505 COMMUNICATIONS MANUAL 10V 10V pk 10V pk 00 300V pk selectable electable 500 1MO GND CH1 INPUT Selective Level Meter SLM3505 2 0296 19 12 dBm 2 0296 V SLM3505 communications manual IMPORTANT SAFETY INSTRUCTIONS 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 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 This appliance must be earthed Ensure that the instrument is powered from a properly grounded supply The inputs must not be connected to signals greater than is indicated on the front panel Keep the ventilation holes on the underneath and sides free from obstruction Do not operate or store under conditions where condensation may occur or where conducting debris may enter the case 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 SLM3505 communications manual ABOUT THIS MANUAL This manual gives details of the communica
3. SLM3505 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 SLM3505 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 GAINPH FRA GAINPH TFA are aliases for the same command 2 52 SLM3505 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 unread 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 magl1 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 2 53 SLM3505 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 U
4. SLM3505 communications manual WAVEFO WAVEFO Function Set the output waveform Description Selects the output waveform for the signal generator Format WAVEFO type Arguments type SINEWA sine wave TRIANG triangle wave SQUARE Square wave NOISE white noise Reply None Example FREQUE 500 WAVEFO TRIANG triangle wave OUTPUT ON Notes 2 58 SLM3505 communications manual ZERO Function Description Format LCR compensatio n 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 2 59 SLM3505 communications manual Appendices COMMAND SUMMARY CONFIGURABLE PARAMETERS SLM3505 communications manual command format CLS ESE value ESE ESR DN OPC RST SRE value SRE STB TRG TST WAI ABORT AMPLIT amplitude BEEP BLANKI on off threshold CONFIG parameter data CONFIG parameter DAV DAVER value DAVER FILTER type dyn
5. set by ESE 1 4 SLM3505 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 Functio Direction n 1 DCD 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 12 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 l 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 2 4 16 6 5 5 1 5 1 6 SLM3505 communications manual SLM3505 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 2 1 SLM3505 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 by
6. 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 2 24 SLM3505 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 2 Notes 2 25 SLM3505 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 mode is not valid such as rms then the command is ignored and an execution error is flagged in the standard event status register sesr 2 26 SLM3505 communications manual GAI NPH GAI NPH Function Set gain phase anal
7. 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 2 45 SLM3505 communications manual SLM SLM Function Set up selective level meter Description Set mode to selective level meter and set up centre frequency Format SLM bandwidth scan freq1 freq2 Arguments bandwidth WIDE 3100HZ 1950HZ 100HZ 360Hz 400Hz 25HZ 3HZ Scan GENERATOR AFC FIXED DUAL INPUT frequency1 centre frequency in Hz frequency2 dual frequency in Hz Reply none Examples SLM 100HZ SINGLE 1 50e5 Notes It is not necessary to send all the arguments but if they must be in the specified order 2 46 SLM3505 communications manual SLM SLM Function Read selective level meter results Description Reads back latest selective level meter results Sets voltmeter mode if not already set Waits for next unread data if necessary Clears new data available bit read by DAV Format SLM or SLM SWEEP Arguments none Reply single 3 data values separated by commas freq mag dbm dual 6 data values separated by comma
8. Generator Settings 0 500 1 75Q 2 6002 Speed FRA LCR Measurement Settings 0 Slow 1 Slow 2 Medium 3 Fast 4 Very Fast Filter FRA LCR Measurement Settings OzNormal 1 Slow 2 None 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 24 28 29 32 36 39 40 42 47 SLM3505 communications manual 0 1 High nput Input Settings O High Z 1 500 18W 2 Low level 3 Balanced CH1 input ranging input Settings O Full Autorange 1 Range Up Only 2 Manual CH2 input ranging input Settings FRA Only O Full Autorange 1 Range Up Only 2 Manual 1 scale factor Input Settings Enter figures mpedance Input Settings 0 500 1 7509 2 6000 Impedance rig htn 55 System Options O Low 1 High Display System Options 0 Colour 1 White on black 2 Black on white Enlarge results system Options 0 0ff 1 On Display type Sweep Settings 0 time 1 Table B 3 48 49 50 51 52 53 54 55 56 57 58 59 60 61 4 SLM3505 communications manual 2 Graph Generator frequency Generator Settings Enter figures Low output amplitude V Generator Settings Low output E
9. PHCONV 360 Notes Notes Number O represents factory default which can only be recalled SLM3505 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 2 38 SLM3505 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 2 39 SLM3505 communications manual RESOLU RESOLU Function Set the data resolution Description Data is returned scientific format with exponent and mantissa The resolution of the mantissa may be selected to be 5 digit NORMAL or 6 digit HIGH Format RESOLU format Arguments format NORMAL 5 digit mantissa HI GH 6 digit mantissa BINARY raw binary format Reply none Example RESOLU HI GH Notes The resolution only changes the real number replies Data format for NORMAL is 11 234 100 Data format for HIGH is 1 23456E 00 The signs of the mantissa exponent shown as in the above examples are only sent if they are negative Data format for BINARY is a proprietary floating point f
10. bit3 sweep data available bit4 streaming data available bitb more streaming data to come bit6 integration data available bit7 datalog data available Example START trigger sweep DAV 0 DAV 11 first data available DAV 11 DAV 11 DAV 15 full sweep data available Notes DAV does not modify the status bits 2 19 SLM3505 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 of status byte when new data available bitl set bit 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 15 ready Notes default value is 6 bit 0 of status byte is set whenever data is available bit 1 of status byte is set when full sweep data is available 2 20 SLM3505 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
11. read multiple times 2 33 SLM3505 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 2 34 SLM3505 communications manual MODE MODE Function Set mode Description Sets the fundamental operating mode of the instrument Format MODE type Arguments type SLM LCR VSWR FRA SCOPE Reply none Example MODE SLM Notes MODE sets the measurement mode of the instrument 2 35 OUTPUT Function Description Format Arguments Reply Example Notes 2 36 SLM3505 communications manual OUTPUT Set output Turns the output on or off or sets the level mode to dBm or voltage Also specifies action at the end of a sweep OUTPUT type impedance command OFF LOLEVEL HI LEVEL impedance 500HMS 75 5 6000HMS HIIMPEDANCE none OUTPUT LOLEVE 6000HM For safety the output defaults to off and must be turned on explicitly SLM3505 communications manual PHCONV PHCONV Function Set phase convention Description Set phase convention Format PHCONV convention Arguments convention 180 180 to 180 360 0 to 360 360 0 to 360 Reply none Example
12. that set the data available bits in the status byte Format DAVER Arguments none Reply decimal equivalent of bits Example DAVER 4 Notes 2 21 SLM3505 communications manual FILTER FILTER Function Select the filtering Description Sets the filter time constant and dynamic response Format FILTER 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 2 22 SLM3505 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 GAINPH FRA GAINPH TFA are aliases for the same command 2 23 SLM3505 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 DAV Format FRA or FRA SWEEP FRA SWEEP Arguments none or SWEEP Reply 6 data values separated by commas freq magl1 mag2 db phase gain one line per result for sweep data Example OUTPUT ON FRA FSWEEP 20 10 20E3 START DAV
13. FRA Settings 1 Gain Computation FRA Settings 0 2 1 1 CH1 CH2 Centre frequency SLM settings 0 Generator frequency 1 AFC 2 Single fixed 3 Dual fixed 4 Input frequency Centre frequency 1 SLM VSWR Tune Settings Center Freq Dual Enter figures Centre frequency 2 SLM Settings Center Freq Dual Enter figures B 5 82 83 84 85 87 88 89 90 91 92 94 95 100 6 SLM3505 communications manual Th reshold SLM Settings Enter figures Freq uency step For Logarithmic Frequency step setting Enter figures Peak level SLM Settings 0 1 Freq uency step For Linear Frequency step setting Enter figures AFC Gain SLM measurement settings centre frequency AFC Enter figures Timebase Oscilloscope Settings Enter figures Trigger level Oscilloscope Settings Enter figures Pretrigger Oscilloscope Settings 0 1 25 2 50 327596 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 0 1 1 CH2 Method VSWR Settings 0 1 Directional coupler 101 102 104 110 112 113 114 SLM3505 communications manual Scale Factor vswR settings Directional coupler Enter figures Bandwidth VSWR Set
14. SER Newtons4th Ltd R amp D department SLM3505 4 Notes 2 54 SLM3505 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 VERSI ON PQ3504 1 2 01 2 20 2 20 2 02 Notes This data can be displayed on the screen by pressing SYSTEM then BACK 2 55 SLM3505 communications manual VSWR VSWR Function Set up VSWR meter Description Set mode to VSWR level meter with specified method Format VSWR method scale Arguments method impedance directional scale scale factor for directional coupler Reply none Examples VSWR IMPEDA Notes 2 56 SLM3505 communications manual VSWR VSRW Function Read VSWR meter results Description Reads back latest VSWR meter results Sets VSWR mode if not already set Waits for next unread data if necessary Clears new data available bit read by DAV Format VSWR or VSWR SWEEP Arguments none Reply 6 data values separated by commas frequency forward power VSWR reflection reflection dB reflected power Example VSWR IMPEDA VSWR 6 data values returned Notes As VSWR does not send the same data twice but waits instead for the next result it is not necessary to check the data available bits before sending the VSWR command 2 57
15. amics FRA FRA FRA SWEEP FREQUE frequency FSWEEP steps start end 09 GAINPH GAINPH GAINPH SWEEP HOLD on off INPUT type impedance KEYBOA value LCR conditions param he ad LCR A 2 reply format 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 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 mag1 mag2 impedance phase R L C series R L C parallel tans reactance SLM3505 communications manual LCR SWEEP MARKER on off frequency MODE type OUTPUT type impedance PHCONV convention PROGRAM function numb er PROGRAM RANGE ch ranging range RESOLU format RESULT function number REZERO SCALE channel factor SCALE channel SHUNT channel resistanc e SHUNT channel SPEED speed START STATUS channel STOP TFA TFA TFA SWEEP USER VERSION VRMS VRMS VSWR method VSWR VSWR SWEEP WAVEFO type ZERO ZERO DELETE n lines of data freq Q tan impedance phase L C R CR terminated text string single real data value single real data value range number range text over low ok freq gain phase dB mag1 mag2 n lines of TFA data 3 CR terminated text strings datecode
16. communications manual BLANKI Select blanking Enable or disable low value blanking BLANKI value threshold value ON OFF threshold threshold in appropriate units none BLANKI OFF BLANKI ON 35 SLM3505 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 2 17 SLM3505 communications manual CONFIG CONFIG Function Configurable parameter query Description Reads the present value of a single parameter Format CONFIG index 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 2 18 SLM3505 communications manual DAV DAV Function Data available query Description Returns data availability status Format DAV Arguments none Reply equivalent of data available its bitO new data available bitl data available bit2 new full sweep data available
17. ed addis dde 2 45 am 2 46 lisse 2 48 Up ume 2 49 STATUS 6 2 50 STOP e 2 51 m ced lc ene nse cla acer miele eat 2 52 USER ted eq eM MEER EIE D 2 54 DEP 2 55 belg EET 2 56 WAVEFO i iiec puesto teens 2 58 ZERO eo 2 59 1 SLM3505 communications manual 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 and line feed LAN ignored 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 ma
18. ister Reply can be read by SRE Example SRE 1 generate a service request when data available Notes 2 7 SLM3505 communications manual SRE SRE Function Read service request enable register Description Read back the present setting of the service request enable register Format SRE Arguments Reply decimal equivalent of bits in status byte register that would generate a service request Example SRE 1 Notes 2 8 SLM3505 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 results data available bit 1 SDV sweep data available bit 3 ALA alarm active bit 4 MAV message available bit5 ESB standard event summary bit 2 9 SLM3505 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 2 10 SLM3505 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 anal
19. mat identification string Format DN Arguments none Reply An ASCII string in the 488 2 format manufacturer model serial no version Example DN NEWTONSATH PSI METRIQ 01234 1 00 Notes 2 4 SLM3505 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 2 5 SLM3505 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 via the PROGRAM menu Any preceding setup commands 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 2 6 SLM3505 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 reg
20. nter figures FSK Control Generator Settings 0 Disabled 1 Enabled Generator waveform Generator Settings 0 Sinewave 1 Triangle 2 Squarewave 3 White Noise Frequency step Generator Settings Enter figures Amplitude Step Generator Settings Enter 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 2 dBu Guard time Generator Settings FSK control Enter figures FSK Frequency Generator Settings FSK control Enter figures FSK Fequency 1 Generator Settings FSK control Enter figures Sweep type Sweep Settings Step Type SLM VSWR Output amp Tune O Logarithmic l Linear Graph scaling sweep settings 0 Auto 1 Manual 62 6 64 65 66 67 68 70 71 75 76 78 80 81 SLM3505 communications manual Graph Sweep settings Enter figures Graph min Sweep settings Enter figures Frequency marker sweep settings 0 1 Single 1 Dual Marker frequency 1 Sweep Settings Marker on Enter figures Search for peak Sweep Settings SLM Mode 1 AutoTune type Settings 0 3 stage autotune 1 Single stage retune Marker frequency 2 Sweep Settings Marker on Enter figures High output amplitude Generator Settings Output high Enter figures High output amplitude dBm Generator Settings Enter dBm figures Graph
21. ogue zero gt 15 major system error Example TST 0 Notes 2 11 WAI Function Description Format Arguments Reply Example Notes 2 12 SLM3505 communications manual WAI Wait for operation complete Suspends communication until the previous operation has completed WAI none none GAINPH START WAI GAINPH SWEEP 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 SLM3505 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 2 13 SLM3505 communications manual AMPLIT AMPLIT Function Set output amplitude Description Sets the output amplitude in Volts or dBm for the generator Format AMPLIT 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 for either the low level or hi level output 2 14 SLM3505 communications manual BEEP BEEP Function Sound the buzzer Description Makes a beep from the instrument Format BEEP Arguments none Reply none Example BEEP Notes 2 15 BLANKI Function Description Format Arguments Reply Example Notes 2 16 SLM3505
22. ormat which returns raw data in a minimum number of data bytes 2 40 SLM3505 communications manual RESULT RESULT Function Access non volatile results stores Description Recall store or delete non volatile results store Format RESULT function number Arguments function RECALL STORE DELETE number 1 999 Reply none Example RESULT RECALL 13 Notes 2 41 RESULT Function Description Format Arguments Reply Example Notes 2 42 SLM3505 communications manual RESULT Access non volatile results stores Recall store or delete non volatile results store RESULT function function NAME FILES N4LFIL TXTFIL NAME name of current program FILES list of names of stored files N4LFIL results in N4L format TXTFIL results in TXT format RESULT N4LFIL SLM3505 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 2 43 SLM3505 communications manual SCALE SCALE Function Set channel scale factor Description Set a multiplying scale factor for a given input channel Format SCALE channel factor Arguments channel CH1 CH2 factor multiplying scale factor Reply none Example SCALE CH2 10 Notes 2 44 SLM3505 communications manual SCREEN SCREEN Function Read the screen data
23. ple NPUT LOLEVE HII MPE Notes The impedance value is only valid for the low level input 2 30 SLM3505 communications manual KEYBOA KEYBOA Function Disable front panel keyboard Description The front panel keyboard disabled to prevent accidental Operation Format KEYBOARD value Arguments value ENABLE DISABLE Reply none Example KEYBOARD DISABLE Notes The keyboard can be re enabled from the front panel only by pressing the HOME key 2 31 SLM3505 communications manual LCR LCR Function Set LCR meter mode Description Set LCR mode and model Format model Arguments model IMPEDANCE SERIES PARALLEL Reply none Example LCR IMPEDA Notes 2 32 SLM3505 communications manual LCR Function Description Format Arguments Reply sweep reply Example Notes 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 14 data values separated by commas freq 1 mag2 impedance phase series R series L series C Parallel R Parallel L Parallel C tans Q reactance 8 data values per line per sweep result impedance phase L C R OUTPUT LOLEVE LCR data returned LCR waits for next unread data LCR SWEEP does not wait for new data data can be
24. s freq1 magl1 dbm1 freq2 mag2 dbm2 Sweep one result as above per line Example SLM 100HZ FI XED 150e3 SLM 1 5000 5 7 3508 2 9 6630 0 SLM 1 5000 5 7 3511 2 9 6627 0 Notes As SLM does not send the same data twice but waits instead for the next result it is not necessary to check the data available bits before sending the SLM command 2 47 SLM3505 communications manual SPEED SPEED Function Sets the measurement speed Description Sets the minimum window size for the measurement FRA and LCR modes Format SPEED value SPEED WINDOW time Arguments value FAST MEDIUM SLOW VSLOW VFAST time window time in seconds Reply none Example SPEED SLOW Notes 2 48 SLM3505 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 2 49 SLM3505 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 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 2 50
25. te 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 0 OPC operation complete bit 2 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 2 2 SLM3505 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 status register have been implemented bit OPC operation complete bit 2 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 2 3 SLM3505 communications manual 1 DN I DN Function Identify query Description Returns a standard for
26. tings Directional coupler 023 1KHz 1 1 95KHz 2 100Hz 3 360Hz 4 400Hz 5 25Hz 6 3Hz 7 1Hz Measurement Settings 0 magnitude 1 Parallel circuit 2 series circuit Search for peak Sweep Settings LCR Mode 1 Single 2 Dual Initial settings system settings 0 1 1 Factory default 2 As last used Peak hold Sweep Settings 1 Reference impedance VSWR settings 0 509 1 75 Q 2 1200 32135Q 4 1500 5 6002 B 7 117 121 128 129 130 132 133 134 135 136 137 8 SLM3505 communications manual Address Remote settings LAN Entre address numbers Language system Settings O English 1 Italian Bargraph SLM Settings 0 Off 1 Bargraph SLM settings Bargraph Enter numbers Bargraph min SLM settings Bargraph Enter numbers Set Clock System settings Hours Set Clock System settings Mins Set Clock System settings Secs Set Date System settings Day Set Date System settings Month Set Date System settings Year Newtons4th Ltd contact details Please direct all queries or comments regarding the SLM3505 instruments or this manual to Newtons4th Ltd 1 Bede Island Road Leicester LE2 7EA 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
27. tion commands recognized by the SLM3505 series of instruments over RS232 USB or LAN For more general operating instructions for the instrument 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 errors inaccuracies omissions Revision 2 66 This manual is copyright 2008 2014 Newtons4th Ltd and all rights are reserved No part may be copied or reproduced in any form without prior written consent 06 June 2014 SLM3505 communications manual CONTENTS 1 Using remote control S a con Du betae 1 1 Standard event status 1 2 Serial Poll status 1 3 5232 COllectlols eire eere tures SLM3505 communications manual RESULT RESULT 2 42 PREZ ERO ore ease c tution ie ee til Need bains 2 43 SCALE cit 2 44 SCREENS e
28. type cpu boot rms dbm freg fdbm vswr r96 rdb rdbm n lines of VSWR data A 3 SLM3505 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 4 SLM3505 communications manual Appendix B Configurable parameters All parameters can be accessed using the CONFIG command CONFIG parameter data Numb er 6 7 Function System parameters Operating mode sets main mode O Selective Level Meter 1 1 Meter 2 Oscilloscope 3 VSWR Meter 4 Frequency Response Analyser Interface Remote settings 0 5232 1 USB 2 LAN Bandwidth auto or wide SLM Measurements 0 Wide 1 3 1KHz 2 1 95KHz 3 600Hz 4 400 5 360Hz 6 100Hz 7 25Hz 8 3Hz 9 1Hz Phase convention system Options 180 to 180 1 0 to 360 2 0 to 360 Output Generator settings 0 Off 1 Low Output 2 High Output B 1 11 13 14 16 18 19 20 21 22 2 SLM3505 communications manual Step message system Options 0 Disabled 1 Enabled Keyboard beep on off system Options O Enabled 1 Disabled Output impedance
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30. y 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 AMPLIT 1 5 OUTPUT ON Mandatory commands specified in the 1 488 2 protocol have been implemented e g IDN RST and all commands that expect a reply are terminated with a question mark 1 1 SLM3505 communications manual The instrument maintains an error status byte consistent with the requirements of the IEEE488 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 1 488 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 operation 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 SLM3505 communications manual
31. yser mode Description Set gain phase analyser mode Format Arguments Reply none Example GAINPH Notes This command has the same effect as MODE GAINPH FRA GAINPH TFA are aliases for the same command 2 27 SLM3505 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 GAI NPH SWEEP GAINPH SWEEP Arguments none or SWEEP Reply 6 data values separated by commas freq magl1 mag2 db phase gain one line per result for sweep data Example OUTPUT ON GAINPH FSWEEP 20 10 20E3 START DAV 3 DAV 15 GAINPH SWEEP data returned Notes GAINPH waits for next unread data GAINPH SWEEP does not wait for new data data can be read multiple times 2 28 SLM3505 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 2 29 SLM3505 communications manual INPUT INPUT Function Set input mode Description Selects the input type of the instrument Format INPUT type impedance Arguments type HILEVEL POWER LOLEVEL BALANCE impedance 500HMS 75 5 6000HMS HIIMPEDANCE Reply none Exam
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