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1. Figure 2 7 Step 3 Mount on the rack a This is for mounting a single instrument on the rack as shown in Figure 2 8 O 000000 O OOOO00 o Figure 2 8 b This is for mounting two instruments side by side as shown in Figure 2 9 A OOO O ooo OOO gt OC OOODOOO0 o Figure 2 9 Note To prevent overheating don t retard the flow of air into or out of the instruments It s essential to clean at the rear sides and bottom of the instrument to allow enough internal air flow 15 2 3 Factory Default Settings Table 2 1 shows the factory default settings of G5100A when it is powered on first time Table 2 1 Factory default settings Parameters marked with a star are stored in non volatile memory Output Configuration Default Setting Function Sine wave Frequency 1 kHz Amplitude Offset 100 mVpp 0 000Vdc Output Units Vpp Output Termination 500 Autorange On Modulation 1 kHz Sine AM FM PM FSK Carrier 1 kHz Pulse PWM Mod Waveform AM 100 Hz Sine Mod Waveform PM FM PWM 10 Hz Sine AM Depth 100 FM Deviation 100 Hz PM Deviation 180 degrees FSK Hop Frequency 100 Hz FSK Rate 10 Hz PWM Width Deviation 10 us Modulation State
2. 120 B 1 8 2 Using SRQ Service Request and Serial 121 B 1 8 3 To read the Status Byte Using 5 122 B 1 8 4 Using The Message Available 122 B 1 8 5 Interrupt Your PC Using 122 B 1 8 6 To Determine as a Command Sequence is Accomplished 122 1 8 7 The Questionable Data 123 B 1 8 8 Bit Definitions Questionable Data 123 2 OUTPUT FORMATS nn rie t 124 B 3 COMMAND REFERENGE 4 aei o out ate dide eta 125 SERA Sm reet edt A t vede ts 125 ee AREE dala mem dm ES 125 128 131 136 147 147 dn ed alin bie cp t 147 ied 147 xoc EMT 149 uA L 152 Jl THE 152 pein thera ANA A Dn EM Lu M EU 159 SEIS M 160 HM C ERREUR 163 Mu m 164 164 X Lp X 169 4 SCPI COMPL
3. 3 Adjust the displayed amplitude at each setup to match the measured amplitude in dBm using the numeric keypad or knob Select ENTER Note Constants are saved after finishing this setup VALUE Note To get dBm you must use the numeric keypad except the knob to enter the number and select dBm 4 After executing setup 102 a If your calibration procedures require you to verify the adjustment just made exit the calibration menu and perform 20 dB Range Flatness Verification If you are executing all the adjustments and verifying the instrument s performance verify the output specifications of the instrument using the Performance Verification Tests When you completed the recommended adjustment procedures the next recommended step is to verify the output specifications 4 18 Calibration Errors The error codes listed in the section 7 7 are faiures that may occur during a calibration System error messages are described in other sections of the chapter 7 55 4 19 Restoring Calibration Data Using this function can restore calibration data to the factory default As the matter of the fact while executing the function through the following procedures calibrated data will be covered by the default 1 Press Utility on the front panel Select the System menu and then select the Test Cal under System menu 3 Select Run Cal Press Set to Def then the calibration data will restore to
4. 2 Set the instrument to the output described in the table below and measure the output frequency Be sure the instrument output is enabled Picotest G5100A Measurement Function Amplitude Frequency Nominal Error Sine Wave 1 00 Vpp 10 000 000 0 MHz 10 000 MHz 200 Hz The error is 100 Hz within 90 days of calibration or 200 Hz within one year 3 Compare the measured frequency to the test limits shown in the table 4 2 AC Amplitude Verification for High Impedance This procedure checks the ac amplitude output accuracy at a frequency of 1 kHz and establishes reference measurements for the higher frequency flatness verification procedures 1 Set the DMM to measure Vrms Volts Connect the DMM as shown below 36 0000 OOOOOO Multimeter 2 Set the outputs described in the table below and measure the output voltage with the DMM Press Utility to set the output impedance to High Z Assure that the output is enabled Picotest G5100A Measurement Output Setup Function Frequency Amplitude Nominal Error High Z Sine Wave 1 000 KHz 20 0 mVrms 0 020 Vrms 0 00091 Vrms High Z Sine Wave 1 000 KHz 67 0 mVrms 0 067 Vrms 0 00138 Vrms High Z Sine Wave 1 000 KHz 200 0 mVrms 0 200 Vrms 0 00271 Vrms High Z Sine Wave 1 000 KHz 670 0 mVrms 0 670 Vrms 0 00741 Vrms High Z Sine Wave 1 000 KHz 2 000 mVrms 2 000 Vrms 0 0207 Vrms Hi
5. will be generated DATA LINE OFF ON The default for the function of linear expand points on the arbitrary waveform is OFF DATA LINE Query the enabled or disabled condition for the function of linear expand points on the arbitrary waveform 1 stands for ON and 0 stands for OFF DISPlay OFF ON Turn off or on the display Disabling the front panel display may speed up the command execution for remote interface operation Remote interface error messages will be shown even when the display is off Displaying a message on the front panel display overrides the display state The display is automatically enabled when the waveform generator has been 135 turned off or after RST command or when you return to local front panel operation The display state is saved when you store the instrument state using SAV command Use RCL command to recall the instrument state and the front panel display will return to the previous state DISPlay Query the display setting Returns 0 OFF or 1 ON DISPlay TEXT quoted string Show a message on the front panel display This command overrides the display state DISP OFF command The allowed message can be up to 12 characters in a large font and more characters in a small font Any additional characters will be truncated With a message diaplaying on the front panel display information relating to the output waveform such as frequency is not shown on the display
6. 0 5 dB 500 Sine Wave 12 dBm 37 000 MHz 0 dB 0 5 dB 500 Sine Wave 12 dBm 47 000 MHz 0 dB 0 5 dB 500 Sine Wave 12 dBm 50 000 MHz 0 dB 0 5 dB 6 Compare the measured output to the test limits shown in the table 4 6 Checking 20 dB Range Flatness This procedure checks the high frequency ac amplitude flatness above 100 kHz on the 20dB attenuator range Flatness is relative to 1 kHz 1 Connect the power meter to measure the output voltage of the instrument as shown below 41 POWER METER G 000900 M Ata a OUTPUT Note Most Power meters will require an attenuator or special power head to measure the 20 dB ouput Set up the function generator as follows a Output impedance 500 by pressing Utility and select Output Setup b Waveform Sine c Frequency 100 KHz d Amplitude 23 90 dBm Then assure that the output is enabled On the power meter use the Relative Power function to set the current reading as the reference value This will allow you to compare future measurement results in dB Set the power meter offset to equal the 100kHz 20dB offset value previously calculated This sets the power meter to directly read the flatness error specification relative to 1 kHz 100kHz 20dB offset is calculated on the Amplitude and Flatness Verification Worksheet Set the instrument to each output described in the table below and m
7. 11 Output a dc voltage with the specified offset level You can set the dc voltage to any value between 5Vdc into 50 ohms or 10Vdc into an open circuit The waveform is output as soon as the command is executed The specified frequency and amplitude have no effect on the pulse wave but are remembered by the waveform generator and will be used on the next function you choose 127 APPLy USER frequency amplitude gt lt offset gt 11 Output an arbitrary waveform currently chosen by the FUNC USER command with the specific frequency amplitude and offset The waveform is output as soon as the command is executed APPLy Query the current configuration and return a quoted string The quoted string includes the function frequency amplitude and offset as in the following format function frequency amplitude offset This command allows you to append this query response to an APPL command in your programming application and use the result to place the waveform generator in the specified state BURSt MODE TRIGgered GATed Specify the burst mode The default is Triggered mode In the triggered mode the waveform generator outputs a waveform with specified number of cycles burst count each time a trigger is received from the specified trigger source In the gated mode the output waveform is either on or off based on the external signal level on the Ext Trig connector on the rear panel Use BURS GATE POL command t
8. 24 1 6 V Output of 10 dB range Amplifier In 25 1 6V Output of 10 dB range Amplifier In 26 5 Output of 20 dB range Amplifier In 27 5 V Output of 20 dB range Amplifier In Note Constants are saved after finishing this setup 3 Adjust the displayed impedance at each setup to match the measured impedance using the numeric keypad or knob Select ENTER VALUE The inputted values are rounded to the nearest 100 uV 4 After executing setup 27 a If your calibration procedures require you to verify the adjustment just made exit the calibration menu and perform AC Amplitude Verification for High Impedance b If you are executing all the adjustments and verifying the instrument s performance continue with the next procedure 49 4 15 Adjusting OdB Range Flatness 1 Set the DMM to measure Vrms Connect each unit as shown below Cyoooaooo OOOOOO Ooooooo 9 the following table Note Setup 28 establishes the power meter reference for all the remaining setups in this table You must always perform setup 28 before any of the following setups NULL OUTPUT 2 Use the DMM to measure the output voltage for each of the setups in Multimeter Nominal Signal Condition Setup Frequency Amplitude 28 100 KHz 0 28 Vrms 2 dBm Power Meter Reference for OdB Range 29 1MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical F
9. 50 Functfiox WaveformiG 1509001 C m PIC 31 ET Table of Contents TABLE OF CONTENT S 5 ge el eoa oa aeuo 2 1 GENERAL INFORMATION tss t tasa tese ease eese ease eese ess ease eae 6 Tz FEATURE OVERVIEW sec od otn teo e teak ecu d ed Bi tee abe lect 6 1 2 WARRANTY INFORMATION 7 1 3 PRECAUTION OF OPERATION 8 1 4 UPKEEP OF 5100 9 1 5 SAFETY 9 1 6 SYMBOLS AND 5 10 1 5 a ihnen NINE Sk RHEINE 11 1 8 OPTIONS AND 55 11 2 OVERVIEW 12 2 1 TO ADJUST THE 12 2 2 To MOUNT G5100A ON THE RACK 14 2 3 FACTORY DEFAULT SETTINGS 16 2 4 G5100A OPERATION PANELS 18 2 41 Front Panel e unde equat dits 18 24 2 Rear Panel ttu eite e E SEE 20 DISASSEMBLY amp ASSEMBLY ease eese ease essen 21 3 1 CASE 55 21 3 2 FRONT PANEL DISASSEMBLY 22 3 3 POWER CONVERTER 5 55 24 3 4 REA
10. DISPlay TEXT Query the message sent to the front panel display DISPlay TEXT CLEar Clear the message shown on the front panel display If the display is currently enabled this command will clear the message on the front panel display and return the normal front panel display mode If the display is currently disabled this command will clear the message on the display but the display remains off F FM INTernal FUNCtion SINusoid SQUare RAMP NRAMP TRIangle NOISe USER Specify the shape of the modulating waveform This applies only when the modulation source is Internal FM SOUR INT command Noise can be a modulating waveform but cannot be used as a carrier waveform neither do Pulse nor dc The default modulating waveform is a sine waveform 136 FM INTernal FUNCtion Query the modulating function used in frequency modulation SIN SQU RAMP NRAM TRI NOIS or USER string indicating the modulating function will be returned Square waveform has 5090 duty cycle Ramp waveform has 100 symmetry Triangle waveform has 5090 symmetry Negative Ramp waveform has 090 symmetry If an Arbitrary USER waveform is chosen to be the modulating waveform it is automatically limited to 4k points Extra points are removed using decimation FM INTernal FREQuency lt frequency MINimum MAXimum Specify the frequency of the modulating waveform This applies only when the modulating sour
11. Examples Sine subdirectory the CDROM selects the function as sine and then sets the frequency amplitude and offset of the waveform A Simple Sine Waveform include lt visa h gt include lt stdio h gt include lt ctype h gt include lt dos h gt void main int argc char argv ViSession defaultRM vi 0 ViStatus status char instrDesc 2 USB0 5710 5100 TW00009009 INSTR viOpenDefaultRM amp defaultRM status viOpen defaultRM instrDesc NULL VI NULL amp vi if status VI SUCCESS printf Can not Open device s n instrDesc return program sets a waveform by selecting the waveshape and adjusting the frequency amplitude and offset viPrintf vi RST n 174 viPrintf vi FUNCtion SINusoid n Select waveshape Other options are SQUare RAMP PULSe NOISe DC and USER viPrintf vi OUTPut LOAD 50 n Set the load impedance in Ohms 50 Ohms default May also be INFinity as when using oscilloscope or DMM viPrintf vi FREQuency 12500 n Set the frequency viPrintf vi VOLTage 1 25 n Set the amplitude in Vpp Also see VOLTage UNIT viPrintf vi VOLTage OFFSet 0 5 n Set the offset in Volts Voltage may also be set as VOLTage HIGH and VOLTage LOW for low level and high level viPrintf vi OUTPut ON n Turn on the instrument output viClose vi viClose defaultRM Example Amplitude Modulation This progr
12. For arbitrary waveforms if the waveform data points do not span full range of output DAC Digital to Analog Converter the maximum offset and amplitude will be limited Setting a high level and low level is another way to specify the offset For instance you will have an amplitude of 5 Vpp with an associated offset voltage of 500 mV when you set your high level to 2 Vpp and low level to 3 Vpp VOLTage OFFSet MINimum MAXimum Query the dc offset voltage for the current function VOLTage HIGH lt voltage gt MINimum MAXimum Specify the high voltage level The default high level for all functions is 50 mV The minimum value is the most negative voltage level and the maximum value is the largest voltage level for the chosen function The high and low voltage level must conform the following restriction 166 Vhigh Vlow lt Vpp max and Vhigh Vlow lt max 2 Where Vpp max is the maximum peak to peak amplitude for the chosen output termination 10 Vpp for a 50 ohm load or 20 Vpp for a high impedance load If you specify an invalid voltage level the waveform generator will adjust it automatically to the highest allowed value and Data out of range error is generated e The high voltage level should always be greater than the low level If not a Setting conflict error is generated and the waveform generator automatically set the high level to 1 mV larger than the specified low level s
13. MEMory STATe NAME 1 1 2 3 4 lt gt 5 3 Display Control G5100A provides an option to turn off the front display screen One may choose to do it for security reason or for speeding up the command execution from the remote interface This option is available from the remote operation only Remote interface operation only Use this command to turn on the front panel display DISP ON Use this command to turn off the front panel display DISP OFF Use this command to display a message and turn the display back on DISP TEXT message to display Use this command to clear the current message on display DISP TEXT CLEar Notes e The display is automatically enabled when the waveform generator is powered on the RST reset command is issued or it is returned to the local front panel operation Error messages are always displayed even when the display is turned off e The display setting may be saved with the SAV command When the instrument state is restored using the RCL command the display setting will return to the saved state 5 4 Beeper G5100A normally lets out a beeper when an error is detected One may 62 turn off the beep when needed The beeper setting is stored in non volatile memory so the setting remains even after the waveform generator is turned off or the reset command is issued from the remote operation How to turn on off the beeper 1 Press the Utility button and then press the s
14. Specify the modulating waveform frequency This applies only the modulation source is internal PM SOUR INT The range is from 2 mHz to 20 kHz and the default is 10 Hz PM INTernal FREQuency MINimum MAXimum Query the internal modulating frequency in Phase modulation The internal modulating frequency in hertz will be returned PM DEViation peak deviation in hertz gt MINimum MAXimum Specify the phase deviation in degrees Phase deviation represents the peak variation in phase of the modulated waveform from the carrier waveform The range is from 0 to 360 degrees and the default is 180 degrees When an external source is selected the carrier is modulated with an external waveform The phase deviation is controlled by the 5v signal on the rear panel Modulation In connector It means that when you choose to have a deviation of 180 degrees then a 5V signal level corresponds to a 180 degree phase shift Lower the external signal level is less the deviation is PM DEViation MINimum MAXimum Query the phase deviation in phase modulation The phase deviation in degree will be returned PM SOURce INTernal EXTernal Specify the modulating signal source The default is INTernal When an external source is selected the carrier is modulated with an external waveform The phase deviation is controlled by the 5v signal on the rear panel Modulation In connector It means that when you choose to have a deviation of 180 degrees then
15. new line character The IEEE 488 EOI end or identify message is interpreted as a new line character and can be used to terminate a command string in place of a new line character A carriage return followed by a new line is also accepted Command string termination will a ways reset the current SCPI command path to the root level B 1 6 IEEE 488 2 Common Commands The IEEE 488 2 standard defines a set of common commands that perform functions like reset self test and status operations Common 116 commands always begin with an asterisk are four to five characters in length and may include one or more parameters The command keyword is separated from the first parameter by a blank space Use a semicolon to separate multiple commands as shown below CLS 32 OPC B 1 7 SCPI Parameter Types The SCPI language defines several different data formats to be used in program messages and response messages Numeric Parameters Commands that require numeric parameters will accept all commonly used decimal representations of numbers including optional signs decimal points and scientific notation Special values for numeric parameters like MINimum MAXimum and DEFault are also accepted You can also send engineering unit suffixes with numeric parameters e g Mhz or Khz If only specific numeric values are accepted the waveform generator will automatically round the input numeric para
16. If you don t need a set of calibration procedures on an item you can adopt the manual calibration for your G5100A The instrument features closed case electronic calibration No internal mechanical adjustments are required The instrument calculates correction factors based upon the input reference value you set The new correction factors are stored in nonvolatile memory until the next calibration adjustment is performed Nonvolatile FLASH calibration memory does not change when power has been off or after a remote interface reset When your instrument is due for calibration contact Picotest for a low cost recalibration service The Picotest G5100A is supported on automated calibration systems which allow Picotest to provide this service at competitive prices In addition you have to be aware of the 29 following information before calibration Calibration Interval The instrument should be calibrated on a regular interval determined by the measurement accuracy requirements of your application A 1 year interval is adequate for most applications Accuracy specifications are warranted only if adjustment is made at regular calibration intervals Accuracy specifications are not warranted beyond the 1 year calibration interval Picotest does not recommend extending calibration intervals beyond 2 years for any application Adjustment is Recommended Whatever calibration interval you select Picotest recommends that complete re
17. ramps from to 10 MHz for arbitrary waveforms from to 25 MHz for square and from 1 7 to 50 MHz for sine The default is 100 Hz The minimum value is 1uHz and the maximum value is 50 MHz FREQuency STARt MINimum MAXimum The start frequency in sweeps will be returned FREQuency STOP 1 frequency MINimum MAXimum Specify the stop frequency in Sweeps The range is from 1uHz to 200 KHz for ramps from to 10 MHz for arbitrary waveforms from to 25 MHz for square and from to 50 MHz for sine The default is 1 KHz The minimum 139 value is 1uHz and the maximum value is 50 MHz FREQuency STOP MINimum MAXimum The stop frequency in sweeps will be returned FREQuency CENTer lt frequency MINimum MAXimum Specify the center frequency in sweeps The range is from 1uHz to 200 kHz for ramps from to 10 MHz for arbitrary waveforms from to 25 MHz for square and from 1uHz to 50 MHz for sine The default is 550 Hz The minimum value is 1uHz and the maximum value is calculated based on the frequency span and the maximum frequency of the function used Maximum center frequency Maximum frequency span 2 FREQuency CENTer MINimum MAXimum The center frequency in sweeps will be returned in hertz FREQuency SPAN frequency MINimum MAXimum Specify the frequency span in sweeps The range is from 0 Hz to 200 KHz for ramps from 0 Hz to 10 MHz for ar
18. the amplitude and offset accuracy may be adversely affected when reducing the amplitude below the expected range change VOLTage RANGe AUTO 70 off or 1 on indicating the auto ranging enable state is returned VOLTage UNIT VPP VRMS DBM Select the unit of the output amplitude The default is VPP The waveform generator used the same unit for front panel and the remote interface so the front panel display in the unit that you select from remote interface 168 If you don t specify the unit in the APPLy or VOLT commands the function generation uses the unit specified in this command When the output termination is set to high impedance you cannot specify the output amplitude in dBm The unit will be automatically converted to Vpp VOLTage UNIT Query the unit of the output amplitude VPP VRMS or DBM will be returned W WAI Wait for all pending operation to complete before executing any additional commands over the interface B 4 SCPI Compliance Information This section encloses a list of commands that are device specific to G5100A Although not included in the 1999 0 version of the SCPI standard these commands are designed with the SCPI format in mind and they follow all of the syntax rules of the standard Many of the required SCPI commands are accepted by the waveform generator but are not described in this manual for simplicity or clarity Most of these non documented commands d
19. trigger source the TRIG SOUR BUS command the waveform generator outputs a pulse 21 ws pulse width from the Ext Trig connector at the beginning of the sweep OUTPut TRIGger SLOPe POS or NEG string indicating the edge for the trigger out signal will be returned OUTPut TRIGger OFF ON Disable or enable the trigger out signal The default is OFF When the trigger out signal is enabled a TTL compatible square waveform with the specified edge is output from the Ext Trig connector on the rear panel at the beginning of the sweep or burst OUTPut TRIGger 70 or 1 indicating the trigger out signal state will be returned P to Z P PHASe lt angle gt MINimum MAXimum Adjust the phase offset of the output waveform in degrees or radians as specified by the previous UNIT ANGL command not available for pulse and noise The range is form 360 degrees to 360 degrees or 2 to 2 radians 152 The default is O degrees The specified phase adjustment causes a bump or hop in the output waveform in order to change the phase relationship to the external signal to which it is currently locked The phase adjustment for phase lock applications is independent of the burst phase as set by the BURS PHAS command PHASe MINimum MAXimum Query the phase offset in degree or radians PHASe REFerence Set the zero phase reference point immediately without changing the output This command changes
20. waveforms If a greater frequency deviation is specified the waveform generator will automatically adjust it to the maximum value allowed When an external source is selected the carrier is modulated with an external waveform The frequency deviation is controlled by the 5v signal on the rear panel Modulation In connector For instance if a deviation of 100kHz is specified then a 5V signal level corresponds to a 100KHz increase in frequency Lower external signal levels produce less deviation and negative signal levels reduce the frequency below the carrier frequency If the deviation causes the carrier waveform to exceed a frequency boundary for the current duty cycle square waveform only G5100A will automatically adjust the duty cycle to the maximum value allowed with the present carrier frequency FM DEViation MINimum MAXimum Query the peak frequency deviation in frequency modulation The peak frequency deviation in hertz will be returned FM SOURce 1INTernal EXTernal Specify the modulating signal source The default is Internal When an external source is selected the carrier is modulated with an external waveform The frequency deviation is controlled by the 5v signal the rear panel Modulation In connector For instance if a deviation of 100kHz is specified then a 5V signal level corresponds to a 100kHz increase in frequency Lower external signal levels produce less deviation and negative signal levels redu
21. 100 KHz OdB offset value which is calculated previously This sets the power meter to directly read the flatness error specification relative to 1 KHz 100 KHz OdB offset is calculated on the Amplitude and Flatness Verification Worksheet 5 Set G5100A to each output described in the following table and measure the output amplitude with the power meter the relative measurement in dB 39 Picotest G5100A Measurement Output Setup Function Amplitude Frequency Nominal Error 500 Sine Wave 2 dBm 100 000 KHz 0 dB 0 1 dB 50 Q Sine Wave 2 dBm 500 000 KHz 0 dB 0 15 dB 50 Q Sine Wave 2 dBm 1 000 MHz O dB 0 15 dB 50 2 Sine Wave 2 dBm 5 000 MHz 0 dB 0 15 dB 500 Sine Wave 2 dBm 10 000 MHz 0 dB 0 3 dB 500 Sine Wave 2 dBm 15 000 MHz 0 dB 0 3 dB 500 Sine Wave 2 dBm 17 000 MHz 0 dB 0 3 dB 500 Sine Wave 2 dBm 20 000 MHz 0 dB 0 3 dB 500 Sine Wave 2 dBm 25 000 MHz 0 dB 0 5 dB 500 Sine Wave 2 dBm 29 000 MHz 0 dB 0 5 dB 500 Sine Wave 2 dBm 37 000 MHz 0 dB 0 5 dB 500 Sine Wave 2 dBm 47 000 MHz 0 dB 0 5 dB 500 Sine Wave 2 dBm 50 000 MHz 0 dB 0 5 dB 6 Compare the measured output to the test limits shown in the table 4 5 Checking 10 dB Range Flatness This procedure checks the high frequency ac amplitude flatness above 100 KHz on the 10dB attenuator range Flatness is relative to 1 KHz 1 Connect the power meter to measure the output amplitude of the instrument as sh
22. 2 dBm Flatness for OdB Elliptical Filter Note Constants are saved after finishing this setup 3 Adjust the displayed impedance at each setup to match the measured impedance using the numeric keypad or knob Select ENTER VALUE 4 After executing setup 52 a If your calibration procedures require you to verify the adjustment just made exit the calibration menu and perform Low Frequency Flatness Verification b If you are executing all the adjustments and verifying the instrument s performance continue with the next procedure 4 16 Adjusting 10 dB Range Flatness Note the Linear Phase path is not adjusted It is approximated using the other path s values 1 Connect the power meter as shown below 51 POWER METER 2 Usethe power meter to measure the output amplitude for each of the setups in the following table Note Setup 53 establishes the power meter reference for all the remaining setups in theis table You must always perform setup 53 before any of the following setups Nominal Signal Condition Setup Frequency Amplitude 53 100 KHz 0 9 Vrms 12 dBm Power Meter Reference for OdB Range 54 1MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 55 5MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 56 10MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 57 15 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 58 20 MHz 0
23. 3 Power Converter Disassembly To disassemble the power converter you have to obey the above procedures from 1 to 8 of the section 3 1 first and then carry out the following steps 24 Unplug the cord from the main board Unplug the cord from the power converter Loose the ground cord Unscrew the two screws on the side board Unscrew the other two screws on the side board HL Disassemble the power converter module CLIL DA EEE wa 3 4 Rear Panel Disassembly To disassemble the rear panel you have to obey the above procedures from 1 to 8 of the section 3 1 first and then carry out the following steps 25 Unplug the cord from the time bass module Unplug the cord from the rear panel s fan Unscrew the two screws fastening the side board and the rear panel Unscrew the other two screws fastening the side board and the rear quee panel 5 Use a tool to unscrew the eight angle screws which firm the BNC terminals 6 Separate the rear panel from the main body 26 3 5 Main Board Disassembly To disassemble the rear panel you have to obey the above procedures from section 3 1 step 1 6 to 3 4 and then carry out the following steps 1 Unscrew the two screws fastening the side board and the main board 2 Separate the side board from the main board 3 Unscrew the other two scews fastening the side board and the main board 4 Separate th
24. CODE lt new code gt CALibration SECure STATe OFF ON lt code gt CALibration SECure STATe CALibration STRing IEEE 488 2 Common Commands CLS ESE enable value ESE ESR IDN LRN 77 OPC OPC PSC 4011 PSC RST SAV 1121314 RCL 011121314 SRE enable value SRE STB TRG TSI 78 7 Error Messages Error messages are issued when an incorrect remote command is sent to your G5100A waveform generator for execution This may occur for reasons such as incorrect command syntax giving the parameters of a command that violate some system constraints hardware failures and so All possible error messages are categorized and listed in this chapter for your reference If you cannot find a particular error message in this chapter contact your service representative Error messages are stored in an error queue in G5100A and may be retrieved in the first in first out FIFO order The first error returned is the first error that was stored G5100A beeps once each time an error occurs and the ERROR annunciator is lit whenever there are error messages in the error queue Only when all the errors in the queue are read the ERROR annunciator is turned off Should more than 20 errors have existed the last error stored in the queue the most recent error is replaced with 350 Queue Overflow No additional errors are saved until errors are read and cleared from the queue If there is no err
25. Cable 1 Set 1 MALE BNC FEMALE N 50 OHM Q Quick Verification P Performance Verification T Troubleshooting Optimal Test Conditions All procedures should comply with the following conditions for optimum performance e Assure that the calibration ambient temperature is stable and between 21 C and 25 C 23 C 2 C e Assure ambient relative humidity is less than 80 e Allow a 1 hour warm up period before verification or adjustment e Keep the measurement cables as short as possible consistent with the impedance requirements e Use only 500 cable Manual adjustment and verification using the recommended test equipment takes approximately 35 minutes 31 Time Required for Calibration The Picotest G5100A can be automatically calibrated under computer control By computer control you can perform the complete calibration procedure and performance verification tests in approximately 30 minutes once the instrument is warmed up See Test Consideratons Perform Adjustments approx 5 Minutes NO NO YES Do Performance YES iS START Verification Tests 00 the Tests DONE 9 7 Verification Pass 7 NS prd approx30 Minutes a N N e Programming Automatic Calibration You can automate the complete verification and adjustment procedures outlined below using programmable test equipment You can program the ins
26. DEGree RAdIAN UNIT ANGLe For triggered burst TRIGger SOURce IMMediate EXTernal BUS TRIGger SOURce For external source on Ext Trig connector TRIGger SLOPe POSitive NEGative TRIGger SLOPe For external gated bust Burst GATE POLarity NORMal INVerted Burst GATE POLarity For trigger out OUTPut TRIGger SLOPe POSitive NEGative OUTPut TRIGger SLOPe OUTPut TRIGger OFF ON OUTPut TRIGger Arbitrary Waveform Commands DATA VOLATILE value value DATA DAC VOLATILE binary block value lt value gt FORMat BORDer NORMal SWAPped FORMat BORDer DATA COPY destination arb name VOLATILE DATA LINE OFF ON DATA LINE 74 FUNCtion USER arb name gt VOLATILE FUNCtion USER FUNCtion USER FUNCtion DATA CATalog DATA NVOLatile CATalog DATA NVOLatile FREE DATA ATTRibute AVERage arb name DATA ATTRibute CFACtor arb name gt DATA ATTRibute POINts arb name gt DATA ATTRibute PTPeak arb name Triggering Commands TRIGger SOURce IMMediate EXTernal BUS TRIGger SOURce TRIGger TRG For external source on Ext Trig connector TRIGger SLOPe POSitive NEGative TRIGger SLOPe For external gated bust Burst GATE POLarity NORMal INVerted Burst GATE POLarity For trigger out OUTPut TRIGger SLOPe POSitive NEGative OUTPut TRIGger SLOPe OUTPut TRIGger OFF ON OUTPut TRIGger Stat
27. EMC EN61326 1 2006 EN61326 2 1 2006 EMI CISPR 11 2003 Class A EN61000 3 2 2000 A2 2005 EN61000 3 3 1995 A1 2001 EMS IEC61000 4 2 1995 A1 1998 A2 2000 IEC61000 4 3 2002 A1 2002 IEC61000 4 4 2004 IEC61000 4 5 1995 A1 2000 IEC61000 4 6 1996 A1 2000 IEC61000 4 8 1993 A1 2000 IEC61000 4 11 2004 Safety IEC61010 1 2001 EN61010 1 2001 2 Edition f A 13 Aug 2009 3 oisi Date Mr Hawk Shang General Manager 4 Ate gt For more information please contact your local supplier sales office or distributor 181
28. FREQuency 5000 n Carrier frequency is 5 kHz viPrintf vi VOLTage LOW O n Set parameters to 5 V TTL viPrintf vi VOLTage HIGH 5 n viPrintf vi FUNCtion PULSe DCYCle 35 n Begin with 35 duty cycle viPrintf vi PWM INTernal FUNCtion TRIangle n Modulating waveshape is triangle viPrintf vi PWM INTernal FREQuency 2 n Modulation frequency is 2 Hz viPrintf vi PWM DEViation DCYCle 15 n Modulation depth is 15 viPrintf vi PWM SOURce INTernal n Use internal signal for modulation If using an external signal for PWM connect the signal to the rear panel BNC and use the command PWM SOURce EXTernal viPrintf vi PWM STATe ON n Turn PWM modulation on viPrintf vi OUTPut ON n Turn on the instrument output viClose vi viClose defaultRM 180 DECLARATION OF CONFORMITY PICOTEST according to ISO IEC Guide 22 and CEN CENELEC EN 45014 9 Conformity with the following European Directives The product herein conforms with the requirements of the Low Voltage Directive 2006 95 EC and the EMC Directive 2004 108 EC and goes with the CE Marking accordingly Conformity with the following product standards Manufacturer Name Picotest Corp Manufacturer Address 5F 1 286 9 Hsin Ya Rd 80673 Kaohsiung Taiwan Declaration of Product Product Name Arbitrary Waveform Generator Model Number G5100A Product Accessories This declaration applies to all accessories of the above product s
29. FUNCtion USER command to output the waveform If you specify a waveform name that is not currently downloaded a Specified arb waveform does not exist error is generated FUNCtion USER Query the selection of waveform specified by FUNCtion USER arb name VOLATILE command FUNCtion USER Select the arbitrary waveform function and output the current arbitrary waveform The selected waveform is output using the current frequency amplitude and offset settings You can use the APPLy command or the FREQ VOLT and VOLT OFFS commands to specify the frequency amplitude and offset The maximum amplitude will be limited if the data points do not span the full range of the output DAC Digital to Analog converter For example the built in sine wave does not use the full range of binary values between 1 and therefore its maximum amplitude is 6 087 Vpp into 50 ohms When you use an arbitrary waveform as your modulating waveform USER the waveform is automatically limited to 4k points Extra waveform points are removed using decimation FUNCtion Query the selection made by FUNCtion USER command One of the strings SIN SQU RAMP PULS NOIS DC and USER will be returned 146 Ito O IDN Query the waveform generator s identification string which contains four fields separated by commas The descriptions of these four fields are shown below Manufacturer s Name Model Number Serial N
30. clipped to The specified duty cycle does not conform to the following condition and is adjusted to accommodate the period DutyCycle 1 1 6 x Edge time Period x 100 222 Data out of range large period limits minimum pulse width The minimum pulse width for pulse waves with period larger than 10 s is larger Refer to the table of minimum pulse width in Section 4 5 for details 222 Data out of range pulse edge time limited by width value clipped to The specified pulse edge time does not conform to the following condition and is adjusted to accommodate the pulse width EdgeTime s 0 625 x PulseWidth 222 Data out of range pulse edge time limited by duty cycle value clipped to The specified pulse edge time does not conform to the following condition and is adjusted to accommodate the duty cycle EdgeTime s 0 625 x Period x DutyCycle 222 Data out of range period value clipped to The pulse period is out of range and is adjusted 222 Data out of range frequency value clipped to The frequency is out of range and is adjusted 222 Data out of range user frequency value clipped to upper limit The frequency is out of range and is adjusted to the maximum value allowed due to selection of arbitrary waveform 222 Data out of range ramp frequency value clipped to upper limit The frequency is out of range and is adjusted to the maximum value 89 allowed due to selection of ramp waveform 222 Data out
31. of range pulse frequency value clipped to upper limit The frequency is out of range and is adjusted to the maximum value allowed due to selection of pulse waveform 222 Data out of range burst period value clipped to The burst period is out of range and is adjusted 222 Data out of range burst count value clipped to The burst count is out of range and is adjusted 222 Data out of range burst period limited by length of burst value clipped to lower limit The burst period is too short to accommodate the burst count and frequency and is adjusted to the minimum value allowed 222 Data out of range burst count limited by length of burst value clipped to upper limit The burst count is out of range When the immediate trigger source is selected the burst count must be less than the product of the burst period and the waveform frequency 222 Data out of range amplitude value clipped to The amplitude is out of range and is adjusted 222 Data out of range offset value clipped to The offset voltage is out of range and is adjusted 222 Data out of range frequency in burst mode value clipped to The frequency is adjusted as indicated by the burst period 222 Data out of range frequency in FM value clipped to This message indicates that the carrier frequency is adjusted to the lower boundary determined by the FM DEV command The carrier 90 frequency must be greater than or equal to the frequency
32. output amplitude but the offset voltage may be reduced accordingly and a Settings conflict error is generated Output Termination Limits When the Output Termination Setting is changed the Output Amplitude is automatically adjusted For instance when you change the output termination from 50 ohms to high impedance your offset voltage doubles thus it affects your output amplitude and when Output Termination has been changed from high impedance to 50 ohms the offset voltage decreases in half Output amplitude in dBm is not available when the output termination is set to high impedance The units will be Vpp For arbitrary waveforms if the waveform data points do not span full range of output DAC Digital to Analog Converter the maximum offset and amplitude will be limited Setting a high level and low level is another way to specify the output amplitude For instance you will have an amplitude of 5 Vpp with an associated offset voltage of 500 mV when you set your high level to 2 Vpp and low level to 3 Vpp While changing amplitude you may notice momentary disruption in the output waveform at certain voltages due to switching of the output attenuators The amplitude is controlled however so the output voltage will never exceed the current setting while switching ranges You may use the VOLT RANG AUTO command to disable the voltage autoranging to prevent this output disruption e Tooutput a dc v
33. polarity is received at the Ext Trig connector 58 e External gated burst mode The waveform generator outputs a continuous waveform when the external signal is true When the external signal turns false the waveform generator completes the current cycle and then stops at the same voltage level as the starting burst phase For noise waveform the output stops immediately when the external signal turns false Trigger Out Signal G5100A may be configured to send out a TTL compatible square wave at the Ext Trig connector on the rear panel with either a rising or a falling edge at the beginning of a sweep or burst e With internal trigger source the trigger out signal is a square wave with 5090 duty cycle The period of the trigger out signal 15 equal to the sweep time or the burst period e With the manual trigger or BUS trigger source the trigger out signal is a pulse with pulse width gt 1 us With external trigger source there is no trigger out signal as the Ext Trig connector is used to receive the trigger input signal How to set up the trigger out signal 1 After sweep or burst mode is activated press the Trig Setup softkey to enter the trigger setup submenu 2 Pressthe Trig Out softkey and then select among OFF rising edge trigger and falling edge trigger 3 Press the softkey under DONE to finish the setting Remote interface operation OutPut TRIGger OFF ON OutPut TRIGger SLOPe POSitive NEGative 5 2 Storing t
34. signal you can reduce the output distortion at lower amplitude When the Sync signal is disabled the output level on the Sync connector is a logic low level When waveform is inverted its Sync signal is not inverted This command is overridden by the setting of the MARK command used with the sweep mode therefore when the marker frequency is enabled and the sweep is enabled too the OUTP SYNC is ignored OUTPut SYNC 70 or 1 indicating the enable state of the Sync connector on the front panel will be returned OUTPut TRIGger SLOPe POSitive NEGative Specify an edge for the trigger out signal When the trigger out signal is enabled by OUTP TRIG command a TTL compatible square waveform with the 151 specified edge is output from the Ext Trig connector on the rear panel at the beginning of the sweep or burst For a pulse with a rising edge use Positive and for a pulse with a falling edge use Negative When using the Immediate internal trigger source the TRIG SOUR IMM command the waveform generator outputs a square waveform with a 5090 duty cycle the rising edge is the sweep trigger from the Ext Trig connector on the rear panel The period is equal to the sweep time When using the External trigger source the TRIG SOUR EXT command the waveform generator disables the trigger out signal and the Ext Trig connector is use for sending an externally triggered sweep When using the Bus software
35. the factory value 56 5 System Operations 5 1 Triggering This feature is only available for bursts and sweeps There are three options to choose from internal triggering external triggering and manual triggering The default is the internal triggering in which the waveform generator continuously outputs the selected waveform The Ext Trig connector on the rear panel is used to receive the external trigger signal The waveform generator outputs a burst or a sweep each time the Ext Trig connector receives a TTL pulse One may instruct the waveform generator to trigger on the ascending edge or the descending edge of the external trigger signal In manual triggering the waveform generator outputs a burst or a sweep each time the Trigger button on the front panel is pressed The Trigger button is lit when the waveform generator is waiting for the next trigger event Triggering is disabled when functions other than burst or sweep is chosen How to choose a trigger source 1 Press the Trig Setup softkey after burst or sweep is activated 2 Press the Src softkey and then select among Int internal Ext external and Man manual After your selection is made the trigger setting will be shown on the display 3 Press the DONE softkey to finish the setting Note that the trigger source setting is stored in volatile memory The default setting will be restored after the power is cycled Remote interface operation TRIGger SOURce I
36. the last command When the command sequence is accomplished the Operation Complete bit O is set in the Standard Event register 6 Use a Serial Poll to check when bit 5 which is routed from the Standard Event register is set in the Status Byte condition register Then send SRE 32 Status Byte enable register bit 5 to configure the function generator for an SRQ interrupt B 1 8 7 The Questionable Data Register The Questionable Data register group provides information about the quality or integrity of the function generator of these conditions can be reported to the Questionable Data summary bit through the enable register To set the enable register mask you have to use the STAT QUES ENABle command to write a decimal value to the register B 1 8 8 Bit Definitions Questionable Data Register Decimal NPE Bit Number Definition Value Voltage overload on OUTPUT connector 0 Voltage Overload 1 The Output has been disabled 1 Not Used 2 Not Used Returns 70 2 Not Used 4 Not Used Returns 70 3 Not Used 8 Not Used Returns 70 4 Not Used 16 Not Used Returns 70 Function generator has lost phase lock 5 Loop Unlocked 32 Frequency accuracy will be affected 6 Not Used 64 Not Used Returns 70 7 Not Used 128 Not Used Returns 70 8 Not Used 256 Error occurred during cal or cal memory 123 lost or calibration is unsecured 9 External Ref
37. the phase reference only and it does not change the phase offset as set with the PHAS command PHASe UNLock ERRor STATe OFF ON Disable or enable the waveform generator to generate an error when the phase lock is lost The default is off When the error is enabled and the phase lock is lost a Reference phase lock loop is unlocked error will be generated The error setting is cleared after the waveform generator has been turned off PHASe UNLock ERRor STATe Query the enable state of the lost phase lock error PM INTernal FUNCtion SINusoid SQUare RAMP NRAMP TRIangle NOISe USER Specify the shape of the modulating waveform This applies only when the modulation source is Internal PM SOUR INT Noise can be a modulating waveform but cannot be used as a carrier waveform neither do Pulse nor dc The default modulating waveform is a sine waveform Square waveform has 50 duty cycle Ramp waveform has 100 symmetry Triangle waveform has 50 symmetry Negative Ramp waveform has 0 symmetry If an Arbitrary USER waveform is chosen to be the modulating waveform it is 153 automatically limited to 4k points Extra points are removed using decimation PM INTernal FUNCtion Query the modulating function used in phase modulation SIN SQU RAMP NRAM TRI NOIS or USER string indicating the modulating function will be returned PM INTernal FREQuency lt frequency MINimum MAXimum
38. the waveform generator will remember it and use it when the triggered mode is selected BURSt NCYCIes The burst count will be returned The range is from 1 to 50 000 and 9 9E 37 is returned if Infinite is specified BURSt INTernal PERiod lt seconds MINimum MAXimum Specify the burst period for bursts with internal immediate trigger source The burst period is ignored when external or manual trigger source is enabled or when the gated burst mode is chosen The range is from 1 uis to 500 seconds and the default is 10 ms The maximum value is 500 s but the minimum value depends on the burst count and frequency as shown below BurstPeriod Bae 4 200ns WaveformFrequency BURSt INTernal PERiod MINimum MAXimum The burst period in seconds will be returned BURSt PHASe lt angle MINimum MAXimum Specify the starting phase in degrees or radians according to UNIT ANGL command The range is from 360 degrees to 360 degrees or from 2 to 129 2 radians and the default is 0 degree 0 radians For sine square and ramp waveform zero degrees is the point at which the waveform crosses zero volts or the dc offset in a positive going direction For arbitrary waveform it is the first waveform point downloaded to memory The burst phase has no effect on pulse or noise waveform In the gated burst mode when the gate signal turns false the current waveform is complete and the waveform generator stops
39. 5678900 Figure 5 2 3 To recall a saved state press the Recall State softkey to enter the recall state submenu a Press the softkey under your desired location number to 60 recall the state from that memory location b Press the Recall State softkey to restore from the selected state in the memory or the Cancel softkey to cancel Output Off 712345678901 te State State State State State State State Figure 5 3 4 To delete a saved state press the Del State softkey to enter the delete state submenu a Press the softkey under your desired location number for deletion b Press the Delete State softkey to delete the selected state or the Cancel softkey to cancel Figure 5 4 5 To set the power on state i e the instrument state restored when the waveform generator is powered on press the Power On softkey to enter the power on state submenu a Press the softkey under your desired location number or the softkey under State Def factory default b Make sure your selection is present under the Power On softkey 712345678901 State State State 3 4 Def Figure 5 5 6 To restore the instrument state to the factory default press the softkey under Set to Def A message will be displayed for you to confirm the action Press the Yes softkey to confirm or the Cancel 61 key to cancel the operation See Figure 4 19 Remote interface operation SAV 1112314 RCL 4011121314
40. 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 59 21 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 60 22 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 61 23 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 62 24 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 63 25 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 64 26 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 65 27 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 52 66 28 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 67 29 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 68 32 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 69 37 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 70 38 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 71 39 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 72 40 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 73 41 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 74 42 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 75 43 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 76 48 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter 77 50 MHz 0 9 Vrms 12 dBm Flatness for 10dB Elliptical Filter Note Constants are saved after finishing this setup 3 Adjust the displayed amplitude at each set
41. AT REC AUTO command setting This command does not affect any stored instrument states arbitrary waveforms or the I O settings It also enables the front panel display if it has been turned off This command will abort a sweep or burst in progress da dS SAV 112 3 4 Store the current instrument state to the specified non volatile storage location If there is any instrument state stored in the specified location it will be overwritten D You can store an instrument state into location O only from the remote interface It is not accessible from the front panel D Storage location O is automatically overwritten when the power is cycled If you store the instrument state for an arbitrary waveform and then delete it later the waveform data is lost and the waveform generator is not able to output the waveform When you store an instrument state the selected function frequency amplitude dc offset duty cycle symmetry as well as any modulation parameters are saved also TST Order a complete self test of the waveform generator Returns 0 when the test runs successfully or 1 when the test fails SWEep SPACing LINear LOGarithmic User Specify the spacing for the sweep The default sweep mode is Linear which waveform generator sweeps the frequency with spacing calculated in a linear function In the logarithmic sweep mode the waveform generator sweeps with spacing calculated in a logarithmic func
42. B Elliptical Filter 82 15 MHz 1 77 Vrms 18 dBm Flatness for 204 Elliptical Filter 83 20 MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 84 21 MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 85 22 MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 86 23 MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 87 24 MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 88 25 MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 89 26 MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 90 27 MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 91 28 MHz 1 77 Vrms 18 dBm Flatness for 204 Elliptical Filter 92 29 MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 93 32 MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 54 94 37 MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 95 38 MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 96 39 MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 97 40 MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 98 41 MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 99 42 MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 100 43 MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 101 48 MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 102 50 MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter
43. C 3096RH 3 23 C A4096 RH 5 35 C 8096 RH 2 18 C 409oRH 4 28 C A090RH 6 50 C 30 RH Operating Environment to 55 Storage Temperature 30 to 70 C Operating Altitude Up to 2000m Bench Dimensions WxHxD 253mm x 107mm x 380mm Weight 4 08 kg Safety IEC61010 1 2001 EN61010 1 2001 279 Edition UL61010 1 2004 EMC EN61326 1997 A1 1998 A2 2001 A3 2003 EMI CISPR 11 1997 A1 1999 A2 2002 Class A IEC61000 3 2 2000 IEC61000 3 3 1994 A1 2001 EMS IEC61000 4 2 1995 A1 1998 A2 2000 IEC61000 4 3 2002 IEC61000 4 4 2004 IEC61000 4 5 1995 A1 2000 IEC61000 4 6 1996 A1 2000 IEC61000 4 8 1993 A1 2000 IEC61000 4 11 1994 A1 2000 172 D Application Programs This chapter contains several remote interface example programs to help you develop programs for your own application Remote Interface Reference starting lists the syntax for the SCPI Standard Commands for Programmable Instruments commands available to program the function generator Introduction Five example programs are included in this chapter to demonstrate controlling the PICOTEST G5100A using SCPI commands All of these programs are written in Microsoft Visual C 6 0 and use the NI VISA If you want to modify the example programs or write your own programs and compile them you will need to install the NI VISA If you are using GPIB The software should have been loaded when you installe
44. Hz for arbitrary waveforms and the default is 500 Hz The minimum value is the lower one of the start and stop frequencies and the maximum value is the higher one of the start and stop frequencies The marker frequency must be a value between the specified start and stop frequencies If you select an out of range value a Settings conflict error is generated and the waveform generator will automatically set it to either the start or the stop frequency depending on which is the closer one MARKer FREQuency MINimum MAXimum Query the marker frequency MEMory STATe NAME 1 2 3 4 lt gt 1 Assign a custom name for the specified storage location You can assign a name to a location from either the front panel or the remote interface but you can only recall a state by name from the front panel The custom name can contain up to 12 characters The first character must be a letter A Z but the remaining characters can be letters numbers or the m underscore character _ Blank spaces are not allowed Assigning the same name to different locations is allowed You cannot assign a name to storage location 0 from the front panel MEMory STATe NAME 1 2 3 4 Query the name of the specified storage location If the specified location has no custom name its default name will be returned MEMory STATe DELete 1 2 3 4 Erase the instrument state from the specified storage location includ
45. IANCE 169 B 5 IEEE 488 COMPLIANCE 170 USING DEVICE CLEAR TO HALT 5 170 C GENERAL SPECIFICATIONS iniecit ei ede erano RE VEO I DH HEC MUR 172 D APPLICATION 173 1 General Information This chapter contains general information about PICOTEST G5100A Waveform Generator The information includes Feature Overview Warranty Information Precaution of Operation Upkeep of G5100A Safety Information Symbols and Terms Inspection Options and Accessories xem MES EL eM E EE C MEC CM E Le You can contact Picotest Corp via the following telephone number for warranty service or technical support information Telephone 886 7 815 7183 Website http www picotest com tw Or contact Picotest for more help by email Email sales picotest com tw info picotest com tw 1 1 Feature Overview G5100A offers 50 MHz sine and 25 MHz square waveforms 14 bits 125 MSa s 256 k point arbitrary waveforms Pulse ramp noise and dc waveforms AM FM PM FSK and PWM modulation types Linear logarithmic arbitrary sweeps and burst operation Built in external timebase 10MHz 500Hz synchronization 16 bits pattern out with a synchronized clock up to 50MHz Connection via standard USB LAN and optional GPIB 1 Graph mode for visual verification of signal setti
46. IBRATION ERRORS nennen 55 4 19 RESTORING CALIBRATION 56 5 SYSTEM 57 SL ATRIGGERING o s dote Ad ea tet 57 5 2 STORING THE INSTRUMENT 59 5 3 DISPLAY CONTROL cree et et en dedit d pee le ve teeth eas 62 BG BEEPER fce uen un mut tton Decent 62 5 5 SOUND iere bee Rte ieu 63 5 6 ERROR DISPEAY ene heo e emite ei hein ie s 63 5 7 CALIBRATION pete vua ret dme lac eta fs 64 6 REMOTE INTERFACE OPERATIONG scsscscssssscsssscsscsssscssssssecsscscsecsscscsecsssscsers 65 6 1 REMOTE INTERFACE 65 6 1 1 USB Interface 65 6 1 2 GPIB Interface sd utu a ete kone 65 6 1 3 Interface issu esed e HE dete 66 6 2 REMOTE INTERFACE COMMANDS 69 7 ERROR MESSAGES wi scisisscccissssccissssccctscsuscetscsicessssssecacsesssastectestesectsssatesdscsocestecssiecdseteiasteas 79 7 1 COMMAND ERRORS nete tette ten e dte 80 7 2 EXECUTION 82 7 3 DEVICE DEPENDENT ERROR 92 754 QUERY ERRORS 93 7 5ANSTR MENT ERRORS oett tana mene e Pe buts 93 7 6 SELF TEST ERRORS 94 7 7 CALIBRATION ERRORS 45 ee e e EE E e e RU 95 7 8 ARBITRA
47. MM or BUS or EXT string indicating the trigger source will be returned TRIGger SLOPe POSitive NEGative Specify whether the rising positive or falling negative edge of the trigger signal is to be used for an externally triggered sweep The default is POS TRIGger SLOPe Query the trigger slope POS or NEG string indicating the trigger slope will be returned U UNIT ANGLe DEGree RADian Specified the unit of the starting phase for the burst with the BURS PHAS command The default is DEG Radians are not available from the front panel so if switching to the front panel operation after using radians on the remote interface operation the waveform generator automatically converts the unit back to degrees for you UNIT ANGLe DEG or RAD indicating the unit of the starting phase for the burst will be returned xe Ms VOLTage lt amplitude gt MINimum 164 Specify the output amplitude The minimum value is 10 mVpp into 50Q and the maximum value is the largest amplitude for the chosen function at most 10 Vpp into 50Q depending on the chosen function and the offset voltage The output amplitude and offset voltage are related to Vmax as shown below Voffset Vpp 2 lt Vmax Where Vmax is the maximum peak voltage for the selected output termination 5 volts for a 50Q load or 10 volts for a high impedance load the function generator will take the new specified
48. MMediate EXTernal BUS How to specify the trigger slope with external trigger source 57 1 After choosing Ext as your trigger source press the softkey under Slope to toggle between rising edge trigger and falling edge trigger 2 Press DONE to finish the setting Remote interface operation TRIGger SLOPe POSitive NEGative Software Triggering In software triggering a bus command is sent through the remote interface to trigger the waveform generator The waveform generator outputs a burst or a sweep when it receives one such command The operation is similar to the Trigger button on the front panel for manual triggering Remote interface operation To trigger the waveform generator from the remote interface choose BUS as the trigger source TRIGger SOURCe BUS and send one of the following commands to trigger TRG TRIGger External Triggering An external signal is applied at the Ext Trig connector on the rear panel in the following five operation modes e Externally modulated FSK mode The carrier frequency is outputted when a logic low level is present at the connector and the hop frequency is outputted when a logic high level is present The maximum shifting rate is 100 kHz e Triggered sweep mode The waveform generator outputs a sweep on the specified edge each time a TTL pulse is received at the Ext Trig connector e Triggered burst mode The waveform generator outputs a burst each time a TTL pulse with specified
49. NIT Vpp Vrms dBm VOLTage UNIT FUNCtion SQUare DCYCle lt percent gt MINimum MAXimum FUNCtion SQUare DCYCle MINimum MAXimum FUNCtion RAMP SYMMetry percent MINimum MAXimum FUNCtion RAMP SYMMetry MINimum MAXimum OUTPut OFF ON OUTPut OUTPut LOAD lt ohms INFinity MINimum MAXimum OUTPut LOAD MINimum MAXimum OUTPut POLarity NORMal INVerted OUTPut POLarity 70 OUTPut SYNC OFF ON OUTPut SYNC Pulse Configuration Commands PULSe PERiod lt seconds gt MINimum MAXimum PULSe PERiod MINimum MAXimum FUNCtion PULSe HOLD WIDTh DCYCle FUNCtion PULSe HOLD WIDTh DCYCle FUNCtion PULSe WIDTh lt seconds gt MINimum MAXimum FUNCtion PULSe WIDTh MINimum MAXimum FUNCtion PULSe DCYCle percent MINimum MAXimum FUNCtion PULSe DCYCle MINimum MAXimum FUNCtion PULSe TRANsition lt seconds gt MINimum MAXimum FUNCtion PULSe TRANsition MINimum MAXimum Amplitude Modulation Commands AM INTernal FUNCtion SINusoid SQUare RAMP NRAMp TRIangle NOISe USER AM INTernal FUNCtion AM INTernal FREQuency lt frequency gt MINimum MAXimum AM INTernal FREQuency MINimum MAXimum AM DEPTh lt depth in percent MINimum MAXimum AM DEPTh MINimum MAXimum AM SOURce INTernal EXTernal AM SOURce AM STATe OFF ON AM STATe Frequency Modulation Commands FM INTernal FUNCtion SINusoid SQUare RAM
50. Off Sweep Start Stop Frequency 100 Hz 1 kHz Sweep Time 1 sec Sweep Mode Linear Sweep State Off Burst Burst Count 1 Cycle Burst Period 10 ms Burst Start Phase 0 degree Burst State Off System Related Operations Power Down Recall Disabled Display Mode ON Error Queue 0 errors Stored States Stored Arbs Output State Off Triggering Operations Trigger Source Internal Immediate Remote Interface Configuration GPIB Address 10 DHCP On IP Address 192 168 0 248 Subnet Mask 255 255 255 0 Default Getaway 192 168 0 250 DNS Server 0 0 0 0 Host Name None Domain Name None 17 2 4 G5100A Operation Panels Brief descriptions are provided in this chapter for all the connectors and buttons on both front and rear panels of G5100A waveform generator 2 4 1 Front Panel Figure 2 10 Power Graph Local Menu Operation Softkeys Waveform selection keys Modulation Sweep Burst keys Store Recall Menu Key Utility Menu Key Help Key Knob Cursor Keys Do NAUA wap BH Bo Manual Trigger Key Output Key Numeric Keypad WN Sync output Connector Ul Main signal output Connector Note When using the Menu Operation Softkeys make sure your selection is highlighted after you press one of the softkey
51. P NRAMp TRIangle NOISe USER FM INTernal FUNCtion FM INTernal FREQuency 4 frequency MINimum MAXimum FM INTernal FREQuency MINimum MAXimum FM DEViation peak deviation in Hz MINimum MAXimum FM DEViation MINimum MAXimum FM SOURce INTernal EXTernal 71 FM SOURce FM STATe OFF ON FM STATe Phase Modulation Commands PM INTernal FUNCtion SINusoid SQUare RAMP NRAMp TRIangle NOISe USER PM INTernal FUNCtion PM INTernal FREQuency 4 frequency MINimum MAXimum PM INTernal FREQuency MINimum MAXimum PM DEViation peak deviation in Hz MINimum MAXimum PM DEViation MINimum MAXimum PM SOURce INTernal EXTernal PM SOURce PM STATe OFF ON PM STATe FSK Commands FSKey FREQuency lt frequency MINimum MAXimum gt FSKey FREQuency MINimum MAXimum FSKey INTernal lt rate in Hz MINimum MAXimum gt FSKey INTernal RATE MINimum MAXimum FSKey SOURce INTernal EXTernal FSKey SOURce FSKey STATe OFF ON FSKey STATe PWM Commands PWM INTernal FUNCtion SINusoid SQUare RAMP NRAMp TRIangle NOISe USER PWM INTernal FUNCtion PWM INTernal FREQuency lt frequency gt MINimum MAXimum PWM INTernal FREQuency MINimum MAXimum PWM DEViation deviation in seconds MINimum MAXimum PWM DEViation MINimum MAXimum PWM DEViation DCYCle 4 deviation in percent MINimum MA
52. Put ON n Turn on the instrument output viPrintf vi SWEep STATe ON n Turn sweep on viClose vi viClose defaultRM Example A Pulse Waveform This program found in the Examples Pulse subdirectory the CD ROM configures a pulse waveform setting pulse width period and high low levels The time is then incremented 177 A Pulse Waveform include lt visa h gt include lt stdio h gt include lt windows h gt void main int argc char argv ViSession defaultRM vi 0 ViStatus status char instrDesc 2 USB0 5710 5100 TW00009009 0 INSTR int i viOpenDefaultRM amp defaultRM status viOpen defaultRM instrDesc NULL VI NULL amp vi if status VI SUCCESS printf Can not Open device s n instrDesc return This program sets a pulse waveshape and adjusts the edge time It also shows the use of high and low voltage levels and period The edge time is adjusted by 5 nsec increments viPrintf vi RST n viPrintf vi FUNCtion PULSe n Select pulse waveshape viPrintf vi OUTPut LOAD 50 n Set the load impedance to 50 Ohms default viPrintf vi VOLTage LOW Low level 0 V viPrintf vi VOLTage HIGH 0 75 n High level 2 75 V viPrintf vi PULSe PERiod 1e 3 n 1 ms intervals viPrintf vi PULSe WIDTh 100e 6 n Pulse width is 100 us viPrintf vi PULSe TRANsition 10e 9 n Edge time is 10 ns rise tim
53. R PANEL DISASSEMBLY 25 3 5 MAIN BOARD DISASSEMBLY 27 3 6 CARD 5 ASSEMBLY une ei cite tod e ed b o des 28 4 CALIBRATION 29 4 1 INTERNAL TIMEBASE VERIFICATION eerte nennen eterne etre sensns en 36 4 2 AC AMPLITUDE VERIFICATION FOR HIGH IMPEDANCE cernes 36 4 3 LOW FREQUENCY FLATNESS VERIFICATION 38 4 4 CHECKING 0 DB RANGE FLATNESS 39 4 5 CHECKING 10 DB RANGE 5 40 4 6 CHECKING 20 DB RANGE 5 41 4 7 CALIBRATION SECURITY 43 4 8 GENERAL CALIBRATION ADJUSTMENT 0 ccccccccccsccsscsscscssesscesessccsecsecesesscesessesssessees 44 4 9 ABORTING A CALIBRATION IN 55 44 4 10 ADJUSTMENTS 45 See S tod ved e OSEE 45 4 12 FREQUENCY ADJUSTMENT INTERNAL 46 4 13 INTERNAL ADC 05 47 4 14 ACAMPUTUDE ADJUSTMENT FOR HIGH IMPEDANCE esee 48 4 15 ADJUSTING ODB RANGE FLATNESS sess enne 50 4 16 ADJUSTING 10 DB RANGE 55 51 4 17 ADJUSTING 20 DB RANGE 55 53 4 18 CAL
54. RY WAVEFORM ERRORS tenete tentent teen 96 8 OPERATION 98 8 1 Bl OCKIDIAGRAM idet etie edo else n etude fend 98 8 2 POWER SUPPLIES ehe rettet soe dedu p et ettet 100 8 3 MAIN POWER 5 100 9 estet telo etd os etes qt tires 101 9 1 OPERATING 5 101 9 2 AVAILABLE SERVICE sce tutes iet eiie tere ee ER ER 101 9 3 RETURN PACKAGE 5 E I E eta HER e itera 102 9 4 ELECTROSTATIC DISCHARGE PRECAUTIONS sees 102 9 5 SURFACE 102 APPENDIX nna R E E T 105 A SPECIFICATION LIST oniiir 106 B REMOTE INTERFACE REFERENCE cccssssssssssssssssssesssssssssssssssssssseseseseseees 113 B 1 AN INTRODUCTION TO THE SCPI LANGUAGE 113 B 1 1 Command Format Used in This 113 B 1 2 Command 5 114 B 1 3 Using the MIN MAX 115 B 1 4 Querying Parameter 5 115 1 5 SCPI Command 116 1 6 IEEE 488 2 Common Commands 7 eee 116 B 1 7 SCPI Parameter TYPE Senu een eee qiti 117 1 8 The SCPI Status 118 B 1 8 1 The Status Byte
55. Ring quoted string Record information about calibration For instance the name of the person who did the calibration the date of the last calibration or the date of next scheduled calibration This information is stored in non volatile memory and newly recorded message will overwrite the previous one CALibration STRing Query the information about the calibration Return a quoted string D DATA VOLATILE value value Download floating point values from 1 to 1 into volatile memory You can download from 1 to 262 144 points per waveform The waveform generator takes the specified number of points and expands them to fill waveform memory If the specified number is less than 16 384 the waveform generator automatically generates a waveform with 16 384 points If the specified number is more than 16 384 a waveform with 65 536 points will be generated And if the specified number is more than 65 536 a waveform with 262 144 will be generated The values 1 and 1 correspond to the peak values of the waveform when the offset is zero volts The maximum amplitude will be limited if the data points do not span the full range of the output DAC Digital to Analog Converter The DATA command overwrites the previous waveforms in volatile memory If you need to save it use DATA COPY command to copy the waveform to non volatile memory Downloading floating point values using DATA VOLATILE is slower than down
56. STA will generate an error Braces lt enclose parameter choices for a given command string The braces are not sent with the command Vertical bars separate multiple parameter choices for a given command string Triangle brackets lt gt indicate that you must specify a value for the enclosed parameter For example the above START command accepts a frequency parameter enclosed in triangle brackets The brackets are not sent with the command string You must specify a value for the parameter such as STAR 6000 Some parameters are enclosed in square brackets The brackets indicate that the parameter is optional and can be omitted The brackets are not sent with the command string If you do not specify a value for an optional parameter the waveform generator uses the default value B 1 2 Command Separators A colon is used to separate a command keyword from a lower level keyword You must insert a blank space to separate a parameter from a command keyword If a command requires more than one parameter you must use a comma between two parameters 114 APPL SIN 5 KHZ 3 0 VPP 2 5 V A semicolon is used to separate commands within the same subsystem and can reduce typing efforts For example sending the following command string BURSt MODE TRIG NCYCles 10 is the same as sending the following two commands BURS MODE TRIG BURS NCYCIes 10 Use a colon and a semicolon to link com
57. Ximum PWM DEViation DCYCle MINimum MAXimum 72 PWM SOURce INTernal EXTernal PWM SOURce PWM STATe OFF ON PWM STATe Sweeps Commands FREQuency STARt lt frequency MINimum MAXimum FREQuency STARt MINimum MAXimum FREQuency STOP frequency MINimum MAXimum FREQuency STOP MINimum MAXimum FREQuency CENTer 4 frequency MINimum MAXimum FREQuency CENTer MINimum MAXimum FREQuency SPAN4 frequency MINimum MAXimum FREQuency SPAN MINimum MAXimum SWEep SPACing LINear LOGarithmic User SWEep SPACing SWEep TIME lt seconds gt MINimum MAXimum SWEep TIME MINimum MAXimum SWEep STATe OFF ON SWEep STATe TRIGger SOURce IMMediate EXTernal BUS TRIGger SOURce TRIGger SLOPe POSitive NEGative TRIGger 51 OUTPut TRIGger SLOPe POSitive NEGative OUTPut TRIGger SLOPe OUTPut TRIGger OFF ON OUTPut TRIGger MARKer FREQuency lt frequency gt MINimum MAXimum MARKer FREQuency MINimum MAXimum MARKer OFF ON MARKer Burst Commands BURSt MODE TRIGgered GATED BURSt MODE 73 BURSt NCYCles lt cycles gt INFinity MINimum MAXimum BURSt NCYCles MINimum MAXimum BURSt INTernal PERiod lt seconds gt MINimum MAXimum BURSt INTernal PERiod MINimum MAXimum BURSt PHASe lt angle gt MINimum MAXimum BURSt PHASe MINimum MAXimum BURst STATe OFF ON BURst STATe UNIT ANGLe
58. a 5V signal level corresponds to a 180 degree phase shift Lower the external signal level is less the deviation is 154 PM SOURce Query the modulating source in phase modulation INT or EXT string indicating the modulating source will be returned PM STATe OFF ON Disable or enable Phase Modulation The default is Off To avoid multiple waveform changes you can enable it after setting up the modulation parameters Only one type of modulation can be activated at one time Also when Phase modulation is activated sweep or burst mode will be disabled PM STATe 70 OFF or 1 ON will be returned PWM INTernal FUNCtion SINusoid SQUare RAMP NRAMP TRIangle NOISe USER Specify the shape of the modulating waveform The default is sine This applies when the modulation source is internal PWM SOUR INT The carrier is a pulse wave in PWM Square waveform has 50 duty cycle Ramp waveform has 100 symmetry Triangle waveform has 50 symmetry Negative Ramp waveform has 0 symmetry If an Arbitrary USER waveform is chosen to be the modulating waveform it is automatically limited to 4k points Extra points are removed using decimation PULSe PERiod lt seconds gt MINimum MAXimum Specify the pulse period The range is from 200 ns to 2000 seconds The default is 1 ms The specified period must be greater than the sum the pulse width and the edge time if not the waveform generator auto
59. adjustment should always be performed at the calibration interval This will assure that the Picotest G5100A will remain within specification for the next calibration interval This criterion for re adjustment provides the best long term stability Performance data measured using this method can be used to extend future calibration intervals e Recommended Test Equipment The test equipment recommended for the performance verification and adjustment procedures is listed below If the exact instrument is not available substitute must be compliant to the calibration standards of equivalent accuracy Recommended Description Requirements Use Equipment AC Volts true RMS AC coupled Accuracy 0 02 to 1 MHz DC Volts Accuracy 50 ppm Resolution Agilent 3458A 8 1 2 Digit Multimeter 005 V Q P T Resistance Offset compensated accuracy 0 1 30 Agilent 53132A Universal Counter Accuracy 0 1 ppm Q P T 100 KHz to 100 MHz Agilent E4418B Power Meter 1 uW to 100 mW 30 dBm to 20 dBm Accuracy 0 02 dB Resolution 0 01 dB 100 KHz to 100 MHz Agilent 8482A Power Sensor Q PT 1 4 W to 100 mW 30 dBm to 20 dBm Cable BNC to BNC Cable 2 set 2 T type BNC connector Cable 1 Set 1 Female Male Female BNC Female to Double Cable 1 Set 1 Stacking Banana Plug ADAPTER COAXIAL STRAIGHT Cable 1 Set 1 FEMALE BNC MALE N 50 OHM ADAPTER COAXIAL STRAIGHT
60. ain power supply is a switching supply No schematic is given forthis supply since it should be replaced as a unit The main power supplyprovides an earth referenced 12 Volts to the power supply module The 12 Volt supply is always active if line power is applied to theinstrument Switching the instrument power switch only affects the power supply module 100 9 Service This chapter is regarding the procedures involved for returning a problem equipment to Picotest Corp for after service 9 1 Operating Inspection Please note that before returning your equipment to Picotest you d better to check the following questions 1 Is the equipment workable Check the ac power cord whether it s conductive Check the ac power cord whether it s connected to the equipment Check the power switch on the front panel whether it can after pressing 2 Is the display normal Check the display whether it s normal after powering on 3 Is there any error message after self test Remove all external connections from the equipment Any external wiring with signals during a self test might cause errors Moreover long test leads including otherwise unconnected leaders are regarded as an antenna receiving pick up ac signals If your equipment can t work properly according to the above check please proceed to do the next step mentioned in section 9 2 9 2 Available Service If there are problems malfunction failures on your
61. al structure also known as a tree system In this system associated commands are grouped together under a common node or root thus forming subsystems A portion of the SOURce subsystem is shown below to explain the tree system SOURCe FREQuency STARt lt frequency gt MINimum MAXimum STARt MINimum MAXimum FREQuency STOP lt frequency gt MINimum MAXimum STOP MINimum MAXimum SWEep SPACing LINear LOGarithmic USER SPACing SWEep TIME seconds TIME MINimum MAXimum SOURce is the root keyword of the command SWEep FREQuency are second level keywords and STARt and STOP are third level keywords A colon separates a command keyword from a lower level keyword B 1 1 Command Format Used in This Manual The command format used in this manual is shown below 113 STARt 4 frequency Most commands and some parameters are expressed as a mixture of upper and lower case letters The upper case letters indicate the abbreviated part that must be specified for the command For shorter program lines send the abbreviated form For better program readability use the long form For example in the above syntax statement STAR and START are both acceptable forms for the same command You may also mix upper or lower case letters in a command For example START star and Star are all acceptable for the same command Other forms such as
62. all plastic foam vinyl paper and other static generating materials Lead away all possible ESD factors to reduce static charges Wear a conductive wrist strap to reduce static charge aggregation Avoid unnecessary touch Put replacement parts into a static free package gk de Eun Use anti static tools only 9 5 Surface Mount It s important to remove surface mount component using soldering irons or desoldering stations specificly designed for surface mount components Using conventional solder removal instrument will cause 102 permanent damage on the printed circuit board and your G5100A s warranty will be invalid 9 6 Troubleshooting Tips Before repairing or troubleshooting make sure that the problem is in the equipment not in any external connections and the equipment is precisely calibrated in the recent 1 year Then proceed with the section 9 1 to check If there is no problem turn to check the power supplies Note To check the power supply remove the power cord first The main power supply outputs a 12 to the main circuit board Other supplies are distributed from this supply While the power cord is plugged this supply Min 11 4 V Max 12 6 V is energized all the time Once your G5100A can t work you d better to check the following points 1 Sometimes circuit failure might pull down the supply output voltage and cause heavy supply loads Disconnect the main supply from the circuit board to t
63. am found in the Examples AM subdirectory the CDROM configures a waveform with amplitude modulation using lower level SCPI commands It also shows how to use the SAV command to store the instrument configuration in the function generator s internal memory Amplitude Modulation include lt visa h gt include lt stdio h gt void main int argc char argv 1 ViSession defaultRM vi 0 ViStatus status char instrDesc 2 USB0 5710 5100 TW00009009 0 INSTR viOpenDefaultRM amp defaultRM status viOpen defaultRM instrDesc NULL VI NULL amp vi if status VI SUCCESS 175 printf Can not Open device s n instrDesc return This program uses low level SCPI commands to configure the function gnerator to output an AM waveform This program also shows how to use state storage to store the instrument configuration in memory viPrintf vi RST n viPrintf vi OUTPut LOAD 50 n Output termination is 50 Ohms viPrintf vi FUNCtion SHAPe SINusoid n shape is sine viPrintf vi FREQuency 6000 VOLTage 3 n Carrier freq is 6 kHz 3 Vpp viPrintf vi AM INTernal FUNCtion SINusoid n Modulating shape is sine viPrintf vi AM INTernal FREQuency 300 n Modulation freq 300 Hz viPrintf vi AM DEPTh 90 n Modulation depth 90 viPrintf vi AM STATe ON n Turn AM modulation on viPrintf vi OUTPut ON n Turn on the instrument outp
64. an be a modulating waveform but cannot be used as a carrier waveform neither do Pulse nor dc The default modulating waveform is a sine waveform AM INTernal FUNCtion Query the modulating function in amplitude modulation SIN SQU RAMP NRAM TRI NOIS or USER string indicating the modulating function will be returned Square waveform has 5090 duty cycle Ramp waveform has 100 symmetry Triangle waveform has 5090 symmetry Negative Ramp waveform has 090 symmetry If an Arbitrary USER waveform is chosen to be the modulating waveform it is automatically limited to 4k points Extra points are removed using decimation AM INTernal FREQuency lt frequency gt MINimum MAXimum Specify the frequency of the modulating waveform This applies only when the modulating source is internal The range is from 2 MHz to 20 kHz and the default is 100 Hz 125 AM INTernal FREQuency MINimum MAXimum Query the internal modulating frequency The frequency in hertz of the internal modulating waveform is returned AM DEPTh depth in percent gt Specify the internal modulation depth or percent modulation in percent The range is from 0 to 120 and the default is 100 Notes When an external source is selected the modulation depth is controlled by the 5v external signal applied at the Modulation In connector on the rear panel Specifically
65. and is executed APPLy SQUare lt frequency gt amplitude gt lt offset gt 11 Output a square wave with specific frequency amplitude and offset The duty cycle is set automatically to 5090 The waveform is output as soon as the command is executed APPLy RAMP lt frequency gt amplitude gt offset 11 Output a ramp wave with specific frequency amplitude and offset The symmetry is set automatically to 100 The waveform is output as soon as the command is executed APPLy PULSe frequency amplitude gt lt offset gt 11 Output a pulse wave with specific frequency amplitude and offset The waveform is output as soon as the command is executed This command works with the current edge time setting and the current duty cycle or pulse width setting depending on which has been selected to hold FUNC PULS HOLD command However the waveform generator will adjust the pulse width or the edge time to comply with the frequency restrictions for pulse waveforms APPLy NOISe frequency DEFault amplitude gt offset 11 Output Gaussian noise wave with the specific frequency amplitude and dc offset The waveform is outputted as soon as the command is executed The specified frequency has no effect on the noise wave but is remembered by the waveform generator and will be used on the next function you choose APPLy DC frequency DEFault gt amplitude DEFault lt offset gt
66. and relative information to your local distributor or us sales picotest com tw We ll contact you immediately 104 Appendix This appendix contains the performance specifications of the G5100A It covers the AC DC Resistance Temperature and Frequency Period characteristics under a variety of conditions It also contains the general characteristics and accuracy calculations for your convenience A lot of efforts are made to make sure these specifications serve your needs for production engineering and or research purposes All specification applies to G5100A unless noted otherwise 105 A Specification List Display Graph mode for visual verification of signal settings Standard Sine Square Ramp Triangle Pulse waveforms Noise DC Capability TE RTI Built in arbitrary Exponential Rise and Fall Negative waveforms ramp Sin x x Cardiac WAVEFORM CHARACTERISTIC 0 1dB lt 100KHz 0 15dB lt 5MHz 0 3dB lt 20MHz 0 5dB 50MHz DC to 20 KHz 70 lt 1Vpp 70 gt 1Vpp 20 KHz to 100 KHz 65 1Vpp 60 gt 1Vpp 100 KHz to 1 MHz 50 1Vpp 45 gt 1Vpp 1 MHz to 20 MHz 40 lt 1Vpp 35 1Vpp 20 MHz to 50 MHz 35 1Vpp 30 1Vpp Total DC to 20 kHz Output 0 5Vpp Harmonic THD N lt 0 06 Amplitude Flatness Relative to 1K Harmonic distortion unit dBc 8 Add 1 10 of output amplitude and offset spec per C for operation outside the range
67. and the output remains at the voltage level corresponding to the starting burst phase BURSt PHASe MINimum MAXimum The starting phase in degree or radians will be returned BURSt STATe OFF ON Disable or enable the burst mode To avoid multiple waveform changes you can enable burst after setting the modulation parameters The waveform generator allows only one of burst sweep and modulations enabled at one time As long as one is enabled the other will be turned off BURSt STATe 70 OFF or 1 ON will be returned BURSt GATE POLarity NORMal INVerted Specify whether the waveform generator uses true high or true low logic levels on the rear panel Ext Trig connector for an externally gated burst The default is NORM true high logic BUTSt GATE POLarity NORM or INV will be returned au C us CALibration SECure CODE new code Set a new security code You have to first use the old security code to unsecure the waveform generator and then set a new security code A security code may contain up to 12 characters and the first character must be a letter A Z The rest of the characters can be any combination of numbers 0 9 letters and m underscore character 130 CALibration SECure STATe OFF ON lt code gt Unsecure or secure the waveform generator for calibration CALibration SECure STATe Query the secured state of the waveform generator Return 0 OFF or 1 ON CALibration ST
68. ator is connected to The value is stored in non volatile memory so it is not affected by power cycle or the remoter interface reset command If MODE is AUTO the device will automatically obtain the IP address of the default gateway from the DHCP server Host Name Host name is the human readable identifier for the device Together with the domain name see below the host name can uniquely represent the device in the networks just like its host IP address Each character in the name can be a number letter dash Domain Name A domain is an administration unit for managing hosts in the networks The name of a domain just like host name is in human readable format Each character in the name can be a number letter dash Domains are hierarchically structured There are top domains such as edu com org etc And a sub domain under a top domain usually represents an organization such as a company a school a government office etc The smallest domain is a host itself For example domain www picotest com tw consists of a host name www and three domains picotest com and the country domain tw The host name and names of its domains are concatenated with the period in the full domain name of the host DNS Server DNS Domain Name Service is an internet service that translates a domain name into IP address The DNS server address is the IP address of the server that provides this service The setting is s
69. aved after finishing this setup 3 Adjust the displayed frequency at each setup to match the measured frequency using the numerical keypad or knob Then select ENTER VALUE 46 4 After executing setup 5 a If your calibration procedures require you to verify the adjustment just made exit the calibration menu and perform Internal Timebase Verification b If you are executing all the adjustments and verifying the instrument s performance continue with the next procedure 4 13 Internal ADC Adjustment G5100A stores calibration constants related to the gain and offset of the internal ADC You must always perform Setup 6 before any other adjustments are attempted Ther internal ADC is used as a source for the calibration constants generated in setup 7 1 Connect each unit as shown below Multimeter ooo ooo C OOO0000 Ooooooo o 9 9 OUTPUT 2 Set the DMM to 5 1 2 digits and measure the dc value Record the measured value 3 Enter the following setup and use the numeric keypad or knob to input the measured value of the dc source Nominal Signal Condition Setup DC Level 47 6 2 0 3096 Calibrate the internal ADC Note Constants are saved after finishing this setup 4 Release all cables from the Modulation In connector of the rear panel 5 Input and start the following setup Se
70. ays be greater than the low level If not 167 a Setting conflict error is generated and the waveform generator automatically set the high level to 1 mV larger than the specified low level specifying a high level and low level also sets the offset For instance you will have an amplitude of 5 Vpp with an associated offset voltage of 500 mV when you set your high level to 2 and low level to 3 Vpp When the Output Termination Setting is changed the voltage levels are automatically adjusted For instance when you change the output termination from 50 ohms to high impedance your voltage shown on the display doubles and when Output Termination has been changed from high impedance to 50 ohms the voltage decreases in half To invert the waveform relative to the offset voltage you can use the OUTP POL command VOLTage LOW MINimum MAXimum Query the low voltage level VOLTage RANGe AUTO OFF ON ONCE Disable or enable the voltage auto ranging The default is On where the waveform generator selects an optimal setting for the output amplifier and attenuators When the auto ranging is Off the current setting is used The ONCE parameter enables the auto ranging selects an optimal setting and then disables it The APPLY command overrides this command and turns the auto ranging on Disabling the auto ranging can avoid momentary disruption caused by attenuators switching while changing amplitudes However
71. bitrary waveforms from 1uHz to 25 MHz for square and from 1 7 to 50 MHz for sine The default is 900 Hz The minimum value is 0 Hz and the maximum value is calculated based on the center frequency and the maximum frequency of the function used Maximum frequency span 2 X Maximum frequency center frequency To sweep up in frequency specify a positive frequency span To sweep down in frequency specify a negative frequency span The following equation shows the relationship between frequency span and start stop frequency Frequency span Stop frequency Start frequency FREQuency SPAN MINimum MAXimum The frequency span in hertz will be returned FSKey FREQuency lt frequency MINimum MAXimum Specify the FSK alternate or hop frequency The range is from 1 to 200 140 kHz for ramps 1 Hz to 10 MHz for arbitrary waveforms from 1uHz to 25 MHz for square and from 1uHz to 50 MHz for sine and the default is 100Hz FSKey FREQuency MINimum MAXimum Query the hop frequency in FSK The hop frequency in hertz will be returned FSKey INTernal RATE rate in Hz MINimum MAXimum Specify the rate at which the output frequency shifts between the carrier and the hop frequency The range is from 2 mHz to 100 kHz and the default is 10 Hz This FSK rate is used only when the FSK source is internal FSK SOUR INT The modulating waveform is a square wave with a 50 duty cycle FSKey INTer
72. ce is internal The range is from 2 mHz to 20 kHz and the default is 10 Hz FM INTernal FREQuency MINimum MAXimum Query the modulating frequency in frequency modulation The modulating waveform frequency in hertz will be returned FM DEViation peak deviation in hertz Specify the peak frequency deviation in hertz This value represents the peak variation in frequency of the modulated waveform from the carrier frequency The range is from 1yHz to 150 kHz for ramps from to 5 05 MHz for arbitrary waveforms from 1uHz to 12 55 MHz for square waveforms and from to 25 05 MHz for sine waveforms and the default is 100 Hz The minimum value is 1 but the maximum value is calculated based on the frequency of the carrier waveform as below Maximum deviation carrier frequency if the carrier frequency is less than Maximum frequency 2 Maximum deviation Maximum frequency carrier frequency if the carrier frequency is greater than Maximum frequency 2 The frequency deviation must not be greater than the carrier frequency If a greater value is set to be the deviation G5100 waveform generator will adjust it automatically to the maximum value allowed 137 The sum of frequency deviation and the carrier frequency must not be greater than the maximum frequency of the function used plus 100 KHz 50 1 MHz for sine and 25 1 MHz for square 300 kHz for ramp and 10 1 MHz for arbitrary
73. ce the frequency below the carrier frequency FM SOURce Query the modulating source in frequency modulation INT or EXT string indicating the modulating signal source will be returned FM STATe OFF ON Disable or Enable the frequency modulation To avoid multiple waveform changes you can enable it after setting up the modulation parameters The 138 waveform generator allows only one of burst sweep and modulations enabled at one time As long as one is enabled the other will be turned off FM STATe 70 OFF or 1 ON will be returned FORMat BORDer NORMal SWAPped Used only for binary block transfers Select the byte order for binary transfers in the block mode using the DATA DAC command The default is NORM In NORM byte order the most significant byte MSB of each data point is assumed first In SWAP byte order the least significant byte LSB of each data point is assumed first Most computers use the swapped byte order The waveform generator represents binary data as signed 16 bit integers which are sent as two bytes Therefore each waveform data point requires 16 bits which must be transferred as two bytes on the waveform generator s interfaces FORMat BORDer Query the byte order for binary transfers in the block mode NORM or SWAP will be returned FREQuency STARt frequency MINimum MAXimum Specify the start frequency in Sweeps The range is from 1uHz to 200 KHz for
74. d your GPIB interface card in your PC If you are using USB or LAN You must have NI VISA version to support USB and LAN Microsoft and Visual 6 6 0 are U S registered trademarks of Microsoft Corporation All of the sample application programs in this chapter are example programs intended for use with Microsoft Visual 6 0 and the NI VISA by USB To use VISA in another Visual project you have to set the environmental variable in Microsoft Visual 6 0 The procedures are in the following e In the after the path Tools Options Directories include has been entered you have to add an Include path offered by NI VISA such as C VXIPNP WinNT include e Add C VXIPNP WinNT lib msc visa32 lib to Project folder The command for USB interface in the following or others will be different on other unit If you have to check the right information please do the procedure of Utility IO Show USB Id for USB interface to get it char instrDesc 2 USB0 5710 5100 TW00009009 INSTR 173 If the communication is via GPIB or LAN interface you have to revise the following USB command 1 to be GPIB 2 or LAN 3 one 1 char instrDesc 2 USBO0 5710 5100 TW00009009 INSTR 2 char instrDesc GPIBO 10 INSTR GPIB control Address 10 3 char instrDesc TCPIPO 192 168 0 123 instO INSTR IP address 192 168 0 123 Program Listings Example A Simple Sine Waveform This program found in the
75. default is OFF meaning the lock is off When the lock is on the front panel keyboard is locked You can exclude local key when locking the front panel keyboard by using SYST KLOC EXCL LOC before you lock the keyboard SYSTem KLOCk EXCLude NONE LOCal Specify if locking the front panel keyboard including the local key or excluding the local key SYSTem KLOCk EXCLude Query which key is excluded when locking the front panel keyboard 162 SYSTem SECurity IMMediate Clears all instrument memory except for the boot parameters and calibration constants Reset all instrument setting to their RST values This command clears all user defined state information user defined arbitrary waveforms and user defined I O settings This command is usually used to clear all memory for security purpose therefore it is not recommended for use in routine applications because of the possibility of unintended loss of data TRIGger Issue an immediate trigger from the remote interface This command can trigger a sweep or burst with any available trigger source TRIG SOUR command TRIGger SOURce IMMediate EXTernal BUS Specify a trigger source for the triggered burst mode only The waveform generator accepts a software BUS trigger an immediate internal trigger or a hardware trigger from the rear panel EXT TRIG connector The default is IMM When using Immediate internal source the frequency at which the bur
76. deviation 222 Data out of range marker confined to sweep span value clipped to The specified marker frequency is out of range and is adjusted to the start or stop frequency whichever is closer 222 Data out of range pulse width value clipped to The desired pulse width is limited to the upper or lower boundary as indicated by the instrument hardware 222 Data out of range pulse edge time value clipped to The desired edge time is limited to the upper or lower boundary as indicated by the instrument hardware 222 Data out of range FM deviation value clipped to 222 222 The desired frequency deviation is limited to upper lower boundary set by the carrier frequency Data out of range FM deviation limited by minimum frequency The frequency deviation is limited to the lower limit Data out of range FM deviation limited by maximum frequency value clipped to upper limit The frequency deviation cannot exceed the carrier frequency The maximum should be limited to 25 05 MHz for sine 12 55 MHz for square carrier waveforms and 5 05 MHz for an arbitrary waveform 222 Data out of range PWM deviation 222 The width deviation is allowed to be in the range of 0 and the width of the underlying pulse waveform while the duty cycle deviation is in the range of 0 and the duty cycle of the underlying pulse waveform But this message indicates that either parameter is further limited by minimum pu
77. deviation Note The operation of this command is affected by FUNC PULS HOLD command FUNC PULS HOLD command decides if the pulse width or the duty cycles are to be held constant as the period varies If the pulse width is held constant so is the pulse width deviation If the duty cycle is held constant so is the duty cycle deviation If one is held constant the other specified in the command will be automatically converted to the equivalent value PWM DEViation MINimum MAXimum Query the pulse width deviation The pulse width deviation is seconds will be returned PWM DEViation DCYCle lt deviation in percent Specify the duty cycle deviation in percent This value represents the duty cycle variation in the modulated waveform from the duty cycle in the original pulse waveform and it is in the form of a percentage of the period The default duty cycle deviation is 1 and the range is from 0 to 100 The 157 minimum value is 0 and the maximum value is approximately 100 limited by the period minimum pulse width and edge time More over it must not be greater than the pulse duty cycle and is under the following constraints Duty Cycle Deviation x Duty Cycle 100 X Minimum Width Period And Duty Cycle Deviations 100 Duty Cycle 100 X Minimum Width Period Where Wmin 20 ns for period s 10 s Wmin 20 ns for period gt 10 s but lt 100 s Wmin 2 5 for period gt 100 s b
78. dulation is turned on the duty cycle is held and the duty cycle deviation is held too as the period is varied Pulse width deviation commands are converted to duty cycle deviation values FUNCtion PULSe HOLD WIDTh DCYCIe Query either the value of the pulse width or the duty cycle being held The value of duty cycle in percent or the value of pulse width in seconds is returned FUNCtion PULSe WIDTh lt seconds gt MINimum MAXimum Specify the pulse width in seconds The range is from 20 ns to 2000 seconds The default is 100 ws The pulse width represents the time from the 50 threshold of the rising edge of the pulse to the 50 threshold of the next falling edge The minimum value the pulse width is 20 ns and the maximum value is 1999 99 seconds The minimum pulse width is restricted by the period as below Wmin 20 ns when period is not greater than 10s Wmin 200 ns when period is greater than 10 s but not greater than 1005 Wmin 2 us when period is greater than 100d not greater than 1000s Wmin 20 ws when period is greater than 1000s The specified pulse width must be less than the difference between the period and the minimum pulse width Pulse Width Period Wmin The waveform generator adjusts the edge time first and then the width if necessary to accommodate the period From the remote interface a Setting conflict error is generated and the pulse width is adjusted The specified pulse width mu
79. e fall time viPrintf vi OUTPut ON n Turn on the instrument output for i 0 i lt 19 i Nary edge by 5 nsec steps viPrintf vi PULSe TRANsition E n 0 00000001 0 000000005 178 Sleep 300 Wait 300 msec viClose vi viClose defaultRM Example Pulse Width Modulation PWM This program found in the Examples PWM subdirectory on the CD ROM configures a pulse waveform with duty cycle which is then slowly modulated by a triangle waveform Pulse Width Modulation PWM include lt visa h gt include lt stdio h gt void main int argc char argv ViSession defaultRM vi 0 ViStatus status char instrDesc 2 USB0 5710 5100 TW00009009 0 INSTR viOpenDefaultRM amp defaultRM status viOpen defaultRM instrDesc VI_LNULL VI_NULL amp vi if status VI_SUCCESS printf Can not Open device s n instrDesc return This program uses low level SCPI commands to configure the function gnerator to output an PWM waveform The pulse is set up with a duty cycle of 35 and a depth of 15 and will vary in width from 20 to 50 with the modulation The pulse may also be configured in time units pulse width and deviation rather than duty cycle if preferred 179 viPrintf vi RST n viPrintf vi OUTPut LOAD 50 n Set the load impedance to 50 Ohms default viPrintf vi FUNCtion SHAPe PULSe n Carrier waveshape is pulse viPrintf vi
80. e corresponding configurations are described below IP Address An IP address is a unique identifier assigned to a device in the network It is expressed in the dot notation nnn nnn nnn nnn where nnn is a byte value from 0 to 255 The value is stored in non volatile memory so it is not affected by power cycle or the remoter interface reset command If MODE is AUTO the device will automatically obtain an IP address from the DHCP server in the network If G5100A fails to get an IP address from DHCP the current IP address setting will be used Subnet Mask Networking administrator uses subnetting to divide a network so that the network traffic is well distributed and the administration process is simplified The subnet mask represents the portion of the host address to be used to identify the subnet For example the subnet mask 255 255 255 0 for a host IP address 10 10 3 101 indicates that the host belongs to the subnet of hosts addressed from 10 10 3 1 to 10 10 3 254 10 10 3 0 and 10 10 3 255 are reserved for special purposes The subnet mask setting is stored in non volatile memory so it is not affected by power cycle or the remoter interface reset command If MODE is AUTO the device will automatically obtain a subnet mask 66 from the DHCP server Default Gateway A gateway is a network device that provides connectivity between two networks The default gateway setting is the IP address of the gateway that the waveform gener
81. e Storage Commands SAV 1121314 RCL 1121314 MEMory STATe NAME 1 2 3 4 lt gt MEMory STATe NAME 1 2 3 4 75 MEMory STATe DELete 1 2 3 4 MEMory STATe RECall AUTO OFF ON MEMory STATe RECall AUTO MEMory STATe RECall SELect 0 1 12 3 4 MEMory STATe RECall SELect MEMory STATe VALid 1 2 3 4 MEMory NSTates Sysrem related Commands SYSTem ERRor IDN DISPlay OFF ON DISPlay DISPlay TEXT lt quoted string gt DISPlay TEXT DISPlay TEXT CLEar RST TST SYSTem VERSion SYSTem BEEPer SYSTem BEEPer STATe OFF ON SYSTem BEEPer STATe SYSTem SOUNd STATe OFF ON SYSTem SOUNd STATe SYSTem KLOCk STATe OFF ON SYSTem KLOCk EXCLude NONE LOCal SYSTem KLOCk EXCLude SYSTem SECurity IMMediate LRN OPC OPC WAI Interface Configuration Commands SYSTem COMMunication RLState LOCal REMote RWLock Phase lock Commands 76 PHASe lt angle gt MINimum MAXimum PHASe MINimum MAXimum PHASe REFerence PHASe UNLock ERRor STATe OFF ON PHASe UNLock ERRor STATe UNIT ANGLe DEGree RADian UNIT ANGLe Status Reporting Commands STB SRE enable value SRE STATus QUEStionable CONDition STATus QUEStionable EVENt STATus QUEStionable ENABle enable value STATus QUEStionable ENABle ESR ESE enable value SESE CES STATus PRESet PSC 0 1 OPC Calibration Commands CALibration SECure
82. e error queue Unless user read the errors in the queue the additional errors will not be stored If there is no error in the error queue when you read it No error string will be displayed SYSTem BEEPer Issue a single beeping tone SYSTem BEEPer STATe OFF ON Disable or enable the beeper 161 SYSTem BEEPer STATe Query the beeper state Return 70 OFF or 1 ON SYSTem SOUNd STATe OFF ON Disable or enable the keypad sound SYSTem SOUNd STATe Query the keypad sound state Return 0 OFF or 1 ON SYSTem COMMunicate RLSTate LOCal REMote RWLock Set the remote local state of the waveform generator over the LAN interface from a Telnet or socket session Provides control analogous to the IEEE 488 2 commands such as GTL Go To Local over the GPIB and USB interfaces The default is Local which sets the instrument state to local and removes any annunciator and locks the front panel keyboard The Remote parameter sets the instrument state to remote display the annunciators and locks the keyboard The RWLock parameter sets the instrument state to remote with lock and display the rwl annunciator and locks the keyboard SYSTem VERSion Query the waveform generator s current SCPI version A string in the form of YYYY V will be returned YYYY represents the year of the version and V represents the version number SYSTem KLOCk STATe OFF ON Disable or enable the front panel keyboard lock The
83. e limited if the data points do not span the full range of the output DAC Digital to Analog converter For example the built in sine wave does not use the full range of binary values between 1 and therefore its maximum amplitude is 6 087 Vpp into 50 ohms The DATA DAC command overwrites the previous waveform in volatile memory and no error will be generated Use the DATA COPY command to copy the waveform to non volatile memory The memory can store up to four user defined waveforms Use DATA CAT Command to list all waveforms stored in volatile and non volatile memory e After downloading the waveform data to memory use the FUNC USER command to choose the active waveform and the FUNC USER command 132 to output it The following statement shows how to use the DATA DAC command to download seven integer points using the binary block format DATA DAC VOLATILE 214 The following statement shows how to use the DATA DAC command to download five integer points in decimal format DATA DAC VOLATILE 8191 4096 0 4096 8191 IEEE 488 2 Binary Block Format In the binary block format a block header precedes the data points The block header follows the format below 5 32768 starts the data block The second number represents the number of digits to follow and the third number represents the number of bytes to follow 32 768 bytes 16 384 points A waveform data point is represented as a 16 bit
84. e other side board from the main board 5 The replacement or repair can be done under the naked condition 27 3 6 GPIB Card s Assembly To assemble the GPIB card you have to obey the above procedures at the section 3 1 and then carry out the following steps 1 Grip the screw nuts using a needle nose plier and unscrew the screws 2 Remove the plate 3 Plug the GPIB cord on the main board 4 Manually fix the GPIB card on the rear panel with the two hex head cap screws 5 Fasten the screws using a hex wrench 28 4 Calibration Procedures This chapter contains procedures for verification of the instrument s performance and adjustment calibration There are two solutions to make the calibration One is through the automatic software and the other is through the manual operations The automiatic software solution includes all procedures below You can select all or some items you need to calibrate While one of the items is finished with calibration the software will lead you to change device connections When the change is done you re allowed to do the next item you had selected then For more calibration software s information please go to our website where you will find some useful sample codes http www picotest com tw download sc html Note The samples are encoded under visual studio 6 and NI VISA For the manual operations generally they re for the sub item calibration purpose
85. e selected an invalid calibration setup number with the remote command Calibration error set up is out of order Certain calibration steps require a specific beginning and ending sequence You may not enter into the middle of a sequence of calibration steps 95 7 8 Arbitrary Waveform Errors 770 Nonvolatile arb waveform memory corruption detected A checksum error was found in the non volatile memory used to store arbitrary waveform As a result the arbitrary waveform cannot be retrieved 781 Not enough memory to store new arb waveform use DATA DELETE All non volatile memory locations are occupied There is no room to store a new waveform 781 Not enough memory to store new arb waveform bad sectors Due to storage hardware failure new waveforms cannot be saved 782 Cannot overwrite a built in waveform The five built in waveform names EXP RISE EXP FALL NEG RAMP SINC and CARDIAC are reserved and cannot be used with DATA COPY command 784 Name of source arb waveform for copy must be VOLATILE When using the DATA COPY command the data source must be the VOLATILE one 785 Specified arb waveform does not exist Before using DATA COPY command to copy from the volatile memory be sure to download the waveform to it using the DATA VOLATILE or DATA DAC VOLATILE command 786 Not able to delete a built in arb waveform Deleting the built in waveform is not allowed 787 Not able to delete the currently selected active a
86. e specified relay is not properly switched or the attenuator amplifier does not provide the expected attenuation or gain These self tests use the internal ADC to verify whether the output path relays output amplifier 20 dB and output attenuators properly operate or not 630 Self test failed internal ADC over range condition A probable ADC failure 631 Self test failed internal ADC measurement error A probable ADC failure 632 Self test failed square pulse DAC test failure A probable failure of the square pulse DAC 94 7 7 Calibration Errors 702 703 706 707 850 851 Calibration error calibration memory is secured A calibration cannot be performed when calibration memory is secured Use the CAL SEC STAT ON command to enter the security code using the remote interface Calibration error secure code provided was invalid Invalid security code specified with the CAL SEC STAT ON command Calibration error value out of range You have entered a value that was unexpected by the calibration firmware For example if a number is expected such a 270 XX mVrms and you enter 100 mVrms that number is outside the expected range of valid inputs Calibration error signal input is out of range Occurs during the ADC Adjustment setup 6 if the 2 Volt input voltage is too high May also occur during self calibration setup 7 run self test to diagnose cause of problem Calibration error set up is invalid You hav
87. easure the output amplitude with the power meter 42 Picotest G5100A Measurement Output Setup Function Amplitude Frequency Nominal Error 500 Sine Wave 18 dBm 100 000 KHz 0 dB 0 1 dB 500 Sine Wave 18 dBm 500 000 KHz 0 dB 0 15 dB 500 Sine Wave 18 dBm 1 000 MHz 0 dB 0 15 dB 50 2 Sine Wave 18 dBm 5 000 MHz 0 dB 0 15 dB 500 Sine Wave 18 dBm 10 000 MHz 0 dB 0 3 dB 500 Sine Wave 18 dBm 15 000 MHz 0 dB 0 3 dB 500 Sine Wave 18 dBm 17 000 MHz 0 dB 0 3 dB 500 Sine Wave 18 dBm 20 000 MHz 0 dB 0 3 dB 500 Sine Wave 18 dBm 25 000 MHz 0 dB 0 5 dB 500 Sine Wave 18 dBm 29 000 MHz 0 dB 0 5 dB 500 Sine Wave 18 dBm 37 000 MHz 0 dB 0 5 dB 500 Sine Wave 18 dBm 47 000 MHz 0 dB 0 5 dB 500 Sine Wave 18 dBm 50 000 MHz 0 dB 0 5 dB 6 Compare the measured output to the test limits shown in the table 4 7 Calibration Security This feature allows you to enter a security code to prevent accidental or unauthorized adjustments of the instrument When you first receive your instrument it is secured Before you can adjust the instrument you must unsecure it by inputting the correct security code Use the CAL SEC STAT ON command to enter the security code using the remote interface The security code is set to 65100 when the instrument is shipped from the factory The security code is stored in non volatile memory and does not change when power has been off after a Factory Res
88. echnician to perform this action The main power supply module contains a fuse rated 3 15A 250V When replacing the fuse BUSSMANN F3 15A250V use only the same types and same rating as specified Do not try to operate the waveform generator if it is damaged Disconnect the power from the equipment and consult the local service representative Return the product to Picotest service department if necessary 1 6 Symbols and Terms A This symbol indicates hazards that may cause damages to the instrument or even result in personal injury This symbol indicates high voltage may be present Use extra caution before taking any action This symbol indicates the frame or chassis terminal presented need to be connected to the actual earth ground o This symbol indicates Protective Conductor Terminal UL Underwriters Laboratories This symbol indicates earth ground terminal This symbol indicates this product complies with the essential requirements or the applicable European laws or directives with respect to safety health environment and consumer protections 10 1 7 Inspection Your product package is supplied with the following items One G5100A waveform generator unit 107 H x 224 W x 380 D mm approx 3 6Kg One power cord One USB cable One pattern generator cable One CD including this electronic User s Manual and software applications Optional accessories as
89. ency in PWM The internal modulating frequency in hertz will be returned PWM DEViation lt deviation in seconds Specify the pulse width deviation in seconds Pulse width deviation represents the variation in seconds from the pulse width of the carrier pulse width The range is from 0 to 1000 seconds and the default is 10 15 The pulse width deviation cannot exceed the current pulse width The minimum value is O seconds and the maximum value is determined by period minimum pulse width and edge time Here s the constraints pulse width deviation has to conform 156 Width Deviation lt Pulse Width Wmin And Width Deviation lt Period Pulse Width Wmin Where Wmin 20 ns for period s 10 s Wmin 20 ns for period gt 10 s but lt 100 s Wmin 2 ws for period gt 100 s but lt 1000 s Wmin 20 ws for period gt 1000 s Also Width Deviation s Pulse width 1 6 X Edge time And Width Deviation s Period Pulse width 1 6 X Edge time When you choose an external source PWM SOUR EXT the width deviation is controlled by the 5 signal level shown on the Modulation In connector the rear panel It means that when the modulating signal is at 5 the output will be at its maximum width deviation and when the modulating signal is at 5V the output will be at its minimum duty cycle Lower external signal levels produce less deviation and negative signal levels produce negative
90. ent fails performance verification adjustment or repair is required Special Notice Amplitude amp Flatness Verification Procedures Measuring during the AC Amplitude high impedance Verification procedure is used as reference measurements in the flatness verification procedures Additional reference measurements and calculated references are used in the flatness verification procedures Use the following table to record these reference measurements and perform the calculations Use both a DMM and a Power Meter to make the flatness verification procedures To correct the difference between the DMM and Power Meter measurements you have to set the Power Meter with 0 00dB level to the DMM at 1 KHz The flatness error of the DMM at 100 KHz is applied to set the required 0 00dB reference The instrument internally corrects the difference between the high Z input of the DMM and the 500 input of the Power Meter while setting the output level You have to also let the reference measurements convert from Vrms made by the DMM to dBm made by the Power Meter For the conversion from Vrms High Z to dBm at 500 the equation shows below Power dBm 10 log 5 0 x Vrms Flatness measurements for the 10 db 20 dB and 30 dB attenuator ranges are verified during the O dB verification procedure There is no separate verification given for these ranges 34 Amplitude amp Flatness Verification Worksheet 1 Enter the following mea
91. equipment during the warranty period Picotest Corp will repair replace it in free of charge Without artificial damage valid warranty can offer you satisfied services After warranty is due or extended warranty expires Picotest will repair recalibrate your equipment at an economy price No matter your warranty is valid or due if there is something wrong with your equipment 101 send emails to Picotest sales picotest com tw or leave messages on our website http www picotest com tw contact asp We will give you immediate supports Or you can also contact your distributor directly 9 3 Return Package If the equipment is necessary to be shipped to Picotest for after service attend to the following points 1 Return with an RMA form which we sent to you after issue confirmed 2 Putthe equipment without any accessories into its original carton or a proper package for shipping It s necessary to fill with enough protection stuff around the equipment 3 Pack the carton firmly with strong tape or metal bands 4 Select a reliable courier or carrier for the delivery 9 4 Electrostatic Discharge Precautions Its great possible to damage electrical components by electrostatic discharge ESD Any component damage might occur at ESD voltages as low as 50 V Therefore to prevent ESD damage as serving the equipment you d better to obey the following guidelines 1 Clean your work station to be a static free area including moving away
92. erence 512 External timebase is being used 10 Not Used 1024 Not Used Returns 70 11 Not Used 2048 Not Used Returns 70 12 Not Used 4096 Not Used Returns 0 13 Not Used 8192 Not Used Returns 0 14 Not Used 16384 Not Used Returns 0 15 Not Used 132768 Not Used Returns 70 Please note that the registers will be cleared under the following conditions 1 The Questionable Data event register is cleared when the CLS command is executed using STAT QUES EVEN command to query the event register 2 The Questionable Data enable register is cleared when the power is on the PSC command doesn t apply the STAT PRES command is executed the STAT QUES ENAB 0 command is executed B 2 Output Data Formats Output data will be in one of formats shown in the table below Type of Output Data Output Data Format Non reading queries 80 ASCII character string Single reading IEEE 488 SD DDDDDDDDESDD nl Multiple readings IEEE 488 SD DDDDDDDDESDD nl S Negative sign or positive sign D Numeric digits E Exponent nl newline character 124 cr carriage return character B 3 Command Reference A to F AM INTernal FUNCtion SINusoid 50 RAMP NOISe USER Specify the modulating waveform for the modulation This applies only when the modulating source is internal Noise c
93. es PICOTEST shall not be liable for any direct indirect special incidental or consequential damages Limitation of warranty 1 Our warranties do not cover any damage resulting from unauthorized modification or misuse 2 Unless mentioned elsewhere in this document our warranty does not apply to fuses and problems arising from normal wear or user s failure to follow instructions 3 Our warranties do not apply on any direct incidental special or consequential damages 4 The above warranties are exclusive and no other warranty is expressed or implied Picotest disclaims any implied warranties of MERCHANTABILITY SATISFACTORY QUALITY and FITNESS for any particular reasons 1 3 Precaution of Operation Please carefully read the manual before operating this device This manual is for reference only Please consult your local service representative for further assistance The contents of this manual may be amended the manufacturer without notice Never dismantle the equipment by any unauthorized person or equipment may be damaged The equipment has been strictly tested for quality before delivery from our factory However this equipment must not be used in dangerous situations where damage may result This product should be placed in a safe area in case of unauthorized use The rear protective conduct terminal needs to be connected to the actual earth ground or electrical shock may occur The pa
94. est 2 Use an to check the supply whether it s free of oscillations 3 There is an input fuse 250V 3 15A located on the main power module to protect against the danger of fire in any failure event of the power supply circuitry This fuse won t fail under normal power supply operation but it will be fails only in the event of an apparent overload showing failure from the power supply circuitry If the output voltage from the power is incorrect after test replace the entire main power module On the other hand it s possible that the power supply failure is affected by others from the equipment 9 7 Self Test Procedures To check whether your G5100A has problem not obey the following procedures to execute the self test The operation procedures are 1 Press on the front panel 103 2 Select the Self Test softkey from the Test Cal menu A complete description of the self tests can be found in chapter 6 The instrument will automatically perform the complete self test procedure when you release the key The self test will complete in approximately 15 seconds If the self test is successful Self Test Passed is displayed on the front panel If the self test fails Self Test Failed and an error number are displayed If repair is required see chapter 9 Service for further details If error messages show on the display please refer to the section 7 6 to confirm the problem Then send it
95. et RST command or after an Instrument Preset SYSTem PRESet command The security code may contain up to 12 alphanumeric characters The first character must be a letter but the remaining characters can be letters numbers or an underscore You do not have to 43 use all 12 characters but the first character must always be a letter Note If you forget the security code you set please contact Picotest sales picotest com tw We ll provide you the solution 4 8 General Calibration Adjustment The procedurs below is the recommended method to complete an instrument calibration It s regarding an overview of the steps required for a complete calibration Other relative details are given in the sections of this chapter 1 Read the Test Considerations in this chapter 2 Unsecure the instrument for calibration refer to the section 4 7 3 Execute the verification tests to characterize the instrument incoming data 4 Press Utility on the front panel 5 Select the System menu and then select the Test Cal under System menu 6 Select Run Cal 7 Enter the Setup Number for the procedure being performed The default setup number is 1 and from the front panel the number will increase as the procedures are performed 8 Select Begin 9 For setups requiring an input adjust the value shown in the display to the measured value and select ENTER VALUE 10 The setup will automatically advance to the next requ
96. etting 1mVpp at 1KHz Units Vpp Vrms dBm Resolution 4 digits Range 5V in 500 Peak AC DC 10 in Hi Z 2 of offset setting Accuracy 0 5 of amplitude setting 2 mV Resolution 4 digits Impedance 50 typical short circuit protected Protection overload automatically disables main output Internal Frequency reference 10ppm in 90 days Accuracy 20ppm in 1 year External Frequency Standard Option Standard reference Lock Range 10 MHz 500 Hz 12 Add 1 ppm average for operation outside the range of 18 C to 28 C 108 Frequency Input External Frequency Output Phase Offset Modulation Type Level 100mVpp 5Vpp Impedance 1KQ typical AC coupled Lock Time Lock Range 2 Sec 10 MHz Level 632mVpp OdBm typical Impedance 50Q typical AC coupled Range 360 to 4 360 Resolution 0 001 Accuracy Modulation AM FM PM FSK PWM Sweep and Burst ans Carrier Sine Square Ramp Arb Source Internal external Internal Sine Square Ramp Triangle Noise Arb Modulation Frequency 2mHz to 20KHz Internal Depth 0 0 120 0 Carrier Sine Square Ramp Arb Source Internal external Internal Modulation Sine Square Ramp Triangle Noise Arb Frequency 2mHz to 20KH
97. f you set the carrier to a value that is not valid the waveform generator will adjust the deviation to the maximum value allowed 221 Settings conflict PWM deviation decreased due to pulse parameters The PWM deviation must follow the limitation concerning the pulse width or duty cycle edge time and period see Ch 4 11 for these limitations or the waveform generator will adjust it automatically 221 Settings conflict frequency forced duty cycle change In the square wave function if you change the frequency to a value that cannot produce the current duty cycle the duty cycle will be automatically adjusted to the maximum value for the new frequency 221 Settings conflict marker forced into sweep span The marker frequency must be a value between the start and the stop frequency 221 Settings conflict selected arb is missing changing selection to default If you delete an arbitrary waveform after storing its instrument state you will lose the waveform data and not able to output the waveform The built in exponential rise wave is outputted instead 221 Settings conflict offset changed due to amplitude When the existing offset voltage does not conform the following limitation Voffset Vpp 2 lt Vmax it is adjusted automatically to 87 the maximum dc voltage allowed with the specified amplitude 221 Settings conflict amplitude changed due to offset When the existing amplitude does not conform to the following li
98. g conventions are used in SCPI command syntax The triangle brackets indicate that you must specify a value for the enclosed parameter The square brackets indicate that the parameter is optional and can be omitted The curly braces enclose the parameter choices for a given command string A vertical bar separates several choices for a parameter 69 The APPLy Commands APPLy SINusoid frequency amplitude offset 1 APPLy SQUare lt frequency gt lt amplitude gt lt offset gt APPLy RAMP frequency amplitude offset 1 APPLy PULSe amplitude offset 1 APPLy NOISe lt frequency DEF gt lt amplitude gt lt offset gt 1 APPLy DC frequency DEF amplitude offset 1 APPLy USER frequency amplitude APPLy Output Configuration Commands FUNCtion SINusoid SQUare RAMP PULSe NOISe DC USER FUNCtion FREQuency lt frequency gt MINimum MAXimum FREQuency MINimum MAXimum VOLTage lt amplitude MINimum MAXimum VOLTage MINimum MAXimum VOLTage OFFSet lt offset VOLTage OFFSet MINimum MAXimum VOLTage HIGH 41 voltage VOLTage HIGH MINimum MAXimum VOLTage LOW lt voltage gt VOLTage LOW MINimum MAXimum VOLTage RANGe AUTO OFF ON ONCE VOLTage RANGe AUTO VOLTage U
99. generator cannot generate a sweep using the dc voltage function 221 Settings conflict not able to burst dc burst turned off The waveform generator cannot generate a burst using the dc voltage function 221 Settings conflict not able to sweep noise sweep turned off The waveform generator cannot generate a sweep using the noise function 221 Settings conflict pulse width decreased due to period With edge time at its minimum the waveform generator has adjusted the pulse width to accommodate the specified period 221 Settings conflict pulse duty cycle decreased due to period With edge time at its minimum the waveform generator has adjusted pulse the duty cycle to accommodate the specified period 85 221 Settings conflict edge time decreased due to period The edge time has been decreased to accommodate the period 221 Settings conflict pulse width increased due to large period The waveform generator has adjusted the pulse width to a greater minimum determined by the current period 221 Settings conflict edge time decreased due to pulse width The waveform generator adjusts first the edge time then the pulse width or duty cycle then period if needed to accommodate the following the limitation EdgeTime lt 0 625 x PulseWidth In this case the edge time is decreased by the waveform generator to accommodate the specified pulse width 221 Settings conflict edge time decreased due to pulse duty cycle The waveform ge
100. gh Z Sine Wave 1 000 KHz 7 000 Vrms 7 000 Vrms 0 0707 Vrms High Z Square Wave 1 000 KHz 900 0 Vrms 0 900 Vrms 0 0100 Vrms Compare the measured voltage to the test limits shown in the table 1 2 4 may be used as a guideline for typical operation 37 Enter the measured value on the worksheet Page 36 as 1 KHz_OdB_reference Enter the measured value on the worksheet Page 36 as 1 KHz_10dB_reference Enter the measured value on the worksheet Page 36 as 1 KHz_20dB_reference The square wave amplitude accuracy is not specified This measurement and error Based on 1 setting 1 mVpp 502 which is converted to Vrms for High Z 4 3 Low Frequency Flatness Verification This procedure checks the AC amplitude flatness at 100 KHz using the reference measurements recorded in the Amplitude and Flatness Verification Worksheet These measurements also stablish an error value used to set the power meter reference The transfer measurements are made at a frequency of 100 KHz using both the DMM and the power meter 1 Set the DMM to measure ac Volts Connect the DMM as shown in the figure on the previous page 2 Set each output of the instrument as described in the table below and measure the output voltage with the DMM Press Utility to set the output impedance to High Z Be sure the output is enabled Picotest G5100A Measurement Output Setup Function Frequency Amplitude Norma
101. he instrument state G5100A provides four storage locations location 1 4 in non volatile memory for user to store instrument state A fifth storage location location 0 holds the default configuration of the instrument The stored instrument state holds all the parameters for the selected function including the waveform frequency dc offset amplitude duty cycle 59 symmetry modulation type and modulation parameters The location 70 can only be accessed from the remote interface You may assign a custom name to any of these locations from the remote interface but cannot assign a name for location 0 The name can contains up to 12 characters but the first character has to be a letter and the rest of them can be numbers letters or the underscore character C How to store recall the instrument state 1 Press the Store Recall button to enter the instrument state submenu Output Off F STI DONE Figure 5 1 2 To store an instrument state press the softkey under Store State to enter the store state submenu a Press the softkey under your desired location number to choose the location only 1 to 4 are available from front panel operation b You may specify a name for the selected memory location Use the numeric keypad and the knob with the cursor keys for entry Pressthe Store State softkey to store the present setting in the memory or the Cancel softkey to cancel Output 71234
102. ible Slope Rising or Falling Selectable Trigger Input Pulse width gt 100 ns Impedance gt 10 DC coupled Latency 500 ns Level TTL compatible into gt 1 Pulse width gt 400 ns Trigger Output Impedance 50 Q typical Output Maximum rate 1MHz Fan out lt 4 Picotest G5100As Pattern Mode CHARACTERISTIC Maximum rate 50MHz Level TTL compatible into 2 2 KO Output Impedance 110 typical Length 2 to 256 K 111 General Specifications CAT II 110 240VAC Power Supply Warm Up Time 1 Hour 10 90 Power Cord 50 Hz 60 Hz 10 90 Language SCPI 1993 IEEE 488 2 Freq Power 80 VA Max Dimension for Rack 214 6x88 6x346 9 mm Consumption 35 VA Max W x H x D Operating 55 Weight 3100 g Environment IEC61010 1 Storage 30 C 70 Safety EN61010 1 Environment UL61010 1 Operating EN61326 IEC61000 3 Up to 2000 m EMC Altitude IEC61000 4 Max Relative Humidity Operating 80 for Temperature up Warranty 1 Year Humidity to 50 Relative Humidity at 40 interi STD USB amp LAN LXI ei nterface ecycle Leve 4 OPT GPIB d SO 112 B Remote Interface Reference B 1 An Introduction to the SCPI Language SCPI Standard Commands for Programmable Instruments is an ASCII based instrument command language designed for testing and measurement instruments It is based on a hierarchic
103. ilter 30 5MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 31 10MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 32 15 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 33 20 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 34 21 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 35 22 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 36 23 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 37 24 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 38 25 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 39 26 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 50 40 27 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 41 28 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 42 29 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 43 32 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 44 37 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 45 38 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 46 39 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 47 40 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 48 41 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 49 42 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 50 43 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 51 48 MHz 0 28 Vrms 2 dBm Flatness for OdB Elliptical Filter 52 50 MHz 0 28 Vrms
104. ing the 148 custom name specified to that location if any and restore the default name You cannot recall the instrument state from a storage location that is empty or an error will be generated MEMory STATe RECall AUTO OFF ON This instrument doesn t support automatic recall of the power down state So it always returns 0 OFF MEMory STATe RECall AUTO This instrument doesn t support automatic recall of the power down state So it always returns 0 OFF MEMory STATe RECall SELect 0 1 2 3 4 Select power on state from stored state when power is turned on The default is O the default state MEMory STATe RECall SELect Query the power on state when power is turned on The value 0 4 will be returned 0 default state 1 state 1 2 state 2 3 state 3 4 state 4 MEMory STATe VALid 1 2 3 4 Query the specified storage location to determine if it currently stores a valid instrument state 70 is returned when there is no valid state stored in that location and 1 is returned when there is a valid state stored in that location MEMory NSTates Query the number of storage locations available for storing the states 4 is returned uie OPC Set the Operation complete bit bit 0 in the Standard Event Register after all of the previous commands have been completed Other commands may be executed before the bit is set This command is used in the triggered sweep or triggered b
105. integer sent in two bytes Therefore the total number of bytes is always twice the number of data points in the waveform and must always be an even number For example 32 768 bytes are required to load a waveform with 16 384 points Use the FORM BORD command to select the byte order for binary block transfers If you specify FORM BORD NORM the default setting the most significant byte MSB of each data point is sent first If you specify FORM BORD SWAP the least significant byte LSB of each data point is sent first Most computers use the swapped byte order Notes The values 8191 correspond to peak values of waveform if the offset is O volts The maximum amplitude will be limited if the data points do not span the full range of the output DAC Digital to Analog converter For example the built in sinc wave does not use the full range of binary values between 8191 and thus its maximum amplitude is limited to 6 087 Vpp into 50 Q The DATA DAC command overwrites previous waveform in the volatile memory and no error will be generated Use the DATA COPY command to copy the waveform to non volatile memory 133 DATA CATalog List all waveform names available for use The names of the five built in waveforms in non volatile memory and all user defined waveforms in volatile memory will be returned Volatile will be returned when a built in waveform is currently downloaded to v
106. ion functions and sets the output waveform and function The main output circuit accepts one of two inputs such as the sine arb waveform or the squarewave pulse waveform Once chosen the signal can be used for one or both attenuators and or a 20 dB amplifier The attenuators and amplifier are applied to create the requested output signal amplitude The output is protected by a relay Once the relay is open the instrument can read the value of the main output circuit If a current overload is detected or a voltage over range condition is found users can use command to open the output relay 98 dino 1 e jouer 10014 Wwaysks jeondo 3NS TN NT 135440 A Taw TWA i i ur x siseuyu G 10558001 5 99 8 2 Power Supplies The line input voltage is filtere and used for the main power supply which provides all power to the instrument Another power supplies including both isolated and earth referenced supplies are contained in the power supply module 12V Isolated w Line 240 V _ Main Supp i 110 240 Vac gt Filter ain Supply 0 o Supplies 3 Power Switch Y Front Panel Power Supply Module 8 3 Main Power Supply The m
107. ired value Note to cancel the adjustment procedure select CANCEL SETP The display will return to the setup number entry 11 When finished select END CAL 12 Secure the instrument against calibration 13 Note the new security code in the instrument s maintenance records 4 9 Aborting a Calibration in Progress From time to time you may need to abort a calibration after the 44 procedure has already been initiated Turning off the power is the step In addition when performing a calibration from the remote interface please issue a remote interface device clear message by a RST The instrument saves calibration constants at the end of each adjustment procedure If you lose power or abort an adjustment in progress at the moment you will need to perform the interrupted adjustment procedure again Note If power is lost when the instrument is attempting to write new calibration constants to FLASH MEMORY all calibration constants for the function you set might lose 4 10 Adjustments Sequence The adjustment sequence is recommended to minimize the number of test equipment set up and connection changes If necessary you may perform individual adjustments Setups from 1 to 7 must be performed in order and must be performed before any other setup procedure 4 11 Self Test Self Test is executed as the first step to ensure that the instrument is in working order before beginning any additional adjustments Note Be sure
108. keys to enter the value Press the softkey under Enter to finish the entry or the softkey under Cancel to withdraw the changes 8 Press the DONE softkey to return to the LAN submenu DNS Setup Submenu 68 9 Press the softkey under DNS Setup to enter the submenu 10 Host Name a Press the softkey under Host Name to set the host name for your waveform generator b Use the numeric keys and the knob with the arrow keys to enter your desired letters or symbols 11 Domain Name a Press the softkey under Domain Name b Use the numeric keys and the knob with the arrow keys to enter your desired letters or symbols 12 DNS Server a Press the softkey under DNS Serv b Use the numeric keys to enter the IP address of the DNS server C Press the softkey under Enter to finish the entry or the softkey under Cancel to withdraw the changes 13 Press the DONE softkey to return to the LAN submenu View Current Configuration 14 Press the softkey under Current Conf to display the current LAN configuration 6 2 Remote Interface Commands You may instruct your G5100A waveform generator to output waveforms using the SCPI Standard Commands for Programmable Instrument commands after the selected remote interface is appropriately set up This section lists the SCPI commands available for remotely controlling the waveform generator For first time SCPI users refer to Appendix B for the introductory materials on SCPI commands Note that the followin
109. keys to scroll the topic selection until View remote command error is highlighted 3 Press the softkey under Select to display the error messages 4 Press the softkey under DONE to leave the help topics Remote interface operation Use this command to read one error from the error queue SYSTem ERRor Use this command to clear all the errors in the error queue CES 5 7 Calibration You need a security code to calibrate or perform self test on the waveform generator Front panel operation 1 Press the Utility button and then the softkey under System to enter the system related submenu 2 Press the softkey under Test Cal Enter your security code by using the numeric keypad 64 6 Remote Interface Operations G5100A supports three remote interfaces USB LAN and GPIB IEEE 488 For GPIB you will need an additional GPIB interface card installed This chapter describes the operations for setting up these remote interfaces and lists the SCPI Standard Commands for Programmable Instrument commands available to control the waveform generator remotely For first time SCPI users refer to Appendix B for the introductory materials on SCPI commands 6 1 Remote Interface Configuration G5100A have built in a web server one may use the Internet Explorer of Microsoft or Firefox of Mozilla Foundation to remotely control the waveform generator through the LAN interface No extra software is needed 6 1 1 USB Interface How to se
110. l Error High Z Sine Wave 100 000 KHz 670 0 mVrms 0 670 Vrms 0 0067 Vrms High Z Sine Wave 100 000 KHz 2 000 mVrms 2 000 Vrms 0 020 Vrms High Z Sine Wave 100 000 KHz 7 000 mVrms 7 000 Vrms 0 070 Vrms Compare the measured voltage to the test limits shown in the table All the required mesaurements on the worksheet have been recorded Please complete the worksheet by calculating all the indications 5 Enter the measured value on the worksheet page 36 as 100kHz_OdB_reference 9 Enter the measured value on the worksheet page 36 as 100kHz 10dB reference 7 Enter the measured value on the worksheet page 36 as 100kHz 20dB reference 38 4 4 Checking O dB Range Flatness This part checks the high frequency ac amplitude flatness above 100 KHz on the 0 dB attenuator range The Flatness is relative to 1 KHz 1 To measure the output amplitude of the instrument as shown below please connect the power meter Z QOOOOO o Ooooooo o 9 9 2 Set up the function generator with the following perameters a Output impedance 500 by pressing Utility and select Output Setup b Waveform Sine Frequency 100 KHz d Amplitude 3 51 dBm Then assure that the output is enabled 3 Set the current reading as the reference value on the power meter using the relative power function This can lead you to compare future measurement results in dB 4 Set the power meter offset to equal the
111. loading binary values using DATA DAC VOLATILE but is 131 more convenient when using trigonometric functions which return values from 1 to 1 After downloading the waveform data to memory use the FUNC USER command to choose the active waveform and the FUNC USER command to output it The following statement shows how to use the DATA command to download seven points to volatile memory DATA VOLATILE 1 67 33 0 33 67 1 DATA DAC VOLATILE binary block value value Download binary or decimal integer values from 8191 to 8191 into volatile memory You can download from 1 to 262 144 256K points per waveform in IEEE 488 2 binary block format or as a list of values The range of values corresponds to the values available using internal 14 bit DAC digital to Analog Converter codes The waveform generator takes the specified number of points and expands them to fill waveform memory If you download less than 16 384 16K points a waveform with 16 384 points will be automatically generated If you download more than 16 384 points a 65 536 point waveform will be generated If you downlad more than 65 536 points a 262 144 point waveform will be generated The values 8191 and 8191 correspond to the peak values of the waveform if the offset is O volts For example if you set the output amplitude to 10 Vpp 8191 corresponds to 5V and 8191 corresponds to 5V The maximum amplitude will b
112. lse width and edge time parameters Data out of range PWM deviation limited by pulse 91 parameters The PWM deviation width or duty cycle is adjusted to accommodate the current pulse parameters such as pulse width duty cycle period and edge time 222 Data out of range duty cycle value clipped to The square wave duty cycle is adjusted to within 20 to 80 222 Data out of range duty cycle limited by frequency value clipped to upper limit The square wave duty cycle is adjusted to within 40 to 60 when the frequency is greater than 10 MHz 223 Too much data An arbitrary waveform specified contains more than 262 144 points Verify the number of points in the DATA VOLATILE or DATA DAC VOLATILE command 224 Illegal parameter value An exact parameter value was expected 7 3 Device Dependent Errors 313 Calibration memory lost memory corruption detected A checksum error was detected in the non volatile memory used to store calibration constant 314 Save recall memory lost memory corruption detected A checksum error was detected in the non volatile memory used to store instrument states 315 Configuration memory lost memory corruption detected A checksum error was detected in the non volatile memory used to store configuration settings 350 Queue overflow 92 More than 20 errors were found and the error queue was full 7 4 Query Errors 410 Query INTERRUPTED A command was received but the output b
113. mands from different subsystems For example in the following command string an error is generated if you do not use both the colon and semicolon BURS STATe ON TRIG SOUR EXT B 1 3 Using the MIN and MAX Parameters You may put MINimum or MAXimum in place of a parameter for many commands For example consider the following command FREQuency STARt 4 frequency Instead of specifying a specific frequency value you may use MIN to set the frequency to its minimum value or MAX to its maximum value B 1 4 Querying Parameter Settings You can query the current value of a parameter by adding a question mark to the command For example the following command sets the start frequency to 5000 Hz 115 STAR 5000 You can query the start frequency by executing STAR You can also query the minimum or maximum start frequency allowed for the current waveform function as follows STAR MIN STAR MAX Caution If you send two query commands without reading the response from the first then when you attempt to read the response you may receive some data from the first response followed by the complete second response To avoid this do not send a query command without reading the response When you cannot avoid this situation send a device clear before sending the second query command B 1 5 SCPI Command Terminators A command string sent to the multimeter must terminate with a
114. matically adjust the edge time first and the pulse width if needed to accommodate the period Period gt Pulse Width 1 6 x Edge Time Or Period Period X Duty Cycle 100 1 6 x Edge Time 155 The specified period stays when the function changes If you select pulse waveform and specify the period by PULS PER command and then choose another function the period will be used on the new function If you change to a function whose minimum period is greater than that for a pulse waveform the period is adjusted to the minimum value allowed for the new function For example if you output a pulse waveform with a period of 200 ns and then change to the ramp function the waveform generator will automatically adjust the period to 5 us the lower limit for ramps A Settings conflict error will be generated and the period will be adjusted PULSe PERiod MINimum MAXimum The period of the pulse waveform will be returned in seconds PWM INTernal FUNCtion Query the modulating function used in PWM SIN SQU RAMP NRAM TRI NOIS or USER string indicating the modulating function will be returned PWM INTernal FREQuency 1 frequency MINimum MAXimum Specify the modulating waveform frequency This applies only when the modulation source is internal PWM SOUR INT The range is from 2 mHz to 20kHz and the default is 10 Hz PWM INTernal FREQuency MINimum MAXimum Query the internal modulating frequ
115. meters The following example demonstrates a command with a numeric parameter option FREQuency STARt lt frequency MINimum MAXimum Discrete Parameters Discrete parameters are used in the settings where only a limited number of values like BUS IMMediate EXTernal are accepted They have the short and long forms just like command keywords You can mix upper and lower case letters Query responses will a ways return the short form in all upper case letters The following example demonstrates a command with a discrete parameter TRIGger SOURce BUS IMMediate EXTernal Boolean Parameters Boolean parameter represents a condition that is either true or false For a false condition the waveform generator accepts OFF or 70 as parameter value For a true condition the 117 multimeter accepts ON or 1 as parameter value When you query a Boolean parameter the instrument will always return 70 or 1 The following example demonstrates a command with a Boolean parameter SWEep STATe OFF ON String Parameters A string parameter can contain any set of ASCII characters A string must begin and end with matching quotes either with single or double quotes You can include the quote delimiter as part of the string by typing it twice without any characters in between The following example demonstrates a command with a string parameter DISPlay TEXT quoted string B 1 8 The SCPI Status System In this section you will kno
116. mitation Voffset Vpp 2 lt Vmax it is adjusted automatically to the maximum value allowed with the specified offset voltage 221 Settings conflict low level changed due to high level The high level must always be greater than the low level If you specify a high level that is smaller than the low level the waveform generator will adjust the low level to be 1 mV less than the high level 221 Settings conflict high level changed due to low level The high level must always be greater than the low level If you specify a low level that is greater than the high level the waveform generator will adjust the high level to be 1 mV greater than the low level 222 Data out of range value clipped to upper limit The specified parameter is out of range and is adjusted to the maximum value allowed 222 Data out of range value clipped to lower limit The specified parameter is out of range and is adjusted to the minimum value allowed 222 Data out of range pulse edge time limited by period value clipped to upper limit The specified edge time does not conform within the existing period and is adjusted to the maximum value allowed 222 Data out of range pulse width time limited by period value clipped to The specified pulse width does not conform to the following condition and is adjusted to accommodate the period PulseWidth lt Period 1 6 x EdgeTime 68 222 Data out of range pulse duty cycle limited by period value
117. modulation Only one modulation can be enabled at one time 221 Settings conflict PWM turned off by selection of other mode or modulation Only one modulation can be enabled at one time 221 Settings conflict sweep turned off by selection of other mode or modulation Only one modulation can be enabled at one time 221 Settings conflict not able to modulate this function This waveform generator cannot generate an AM FM PM FSK modulated waveform using the pulse noise or dc voltage function 221 Settings conflict PWM only available in pulse function The waveform generator can only generate PWM modulated waveform using pulse function 221 Settings conflict not able to sweep this function The waveform generator cannot generate a sweep using the pulse noise or dc voltage function 64 221 Settings conflict not able to burst this function The waveform generator cannot generate a burst using the dc voltage function 221 Settings conflict not able to modulate noise modulation turned off The waveform generator cannot generate a modulated waveform using the noise function 221 Settings conflict not able to sweep pulse sweep turned off The waveform generator cannot generate a sweep using the pulse function 221 Settings conflict not able to modulate dc modulation turned off The waveform generator cannot generate a dc voltage function 221 Settings conflict Not able to sweep dc sweep turned off The waveform
118. nal When choosing an external source the pulse waveform is modulated with an external waveform The width duty cycle deviation is controlled by the 5V signal level shown on the Modulation In connector on the rear panel It means that when the modulating signal is at 5V the output will be at its maximum duty cycle and when the modulating signal is at 5V the output will be at its minimum duty cycle PWM SOURce Query the modulating source in PWM INT or EXT string indicating modulating source will be returned PWM STATe Disable enable PWM The default is Off To avoid multiple waveform changes you can enable it after setting up the modulation parameters Only one type of modulation can be activated at one time Also when PWM is activated sweep or burst mode will be disabled PWM is allowed only when pulse is used PWM STATe Query the PWM state 0 OFF or 1 ON will be returned R RCL 0111213 14 Recall the instrument state previously stored in the non volatile storage location Storage location 0 stores waveform generator s power on state and storage location 1 to 4 are empty when the instrument is shipped out from the factory You can not recall a state from a storage location which is empty Storage location 0 is automatically overwritten when the power is cycled 159 RST Reset the waveform generator to its factory default independent of the MEM ST
119. nal RATE MINimum MAXimum Query the FSK rate The FSK rate will be returned FSKey SOURce INTernal EXTernal Specify the FSK source The default is Internal FSKey SOURce Query the FSK source INT or EXT string indicating FSK source will be returned FSKey STATe OFF ON Disable or enable FSK Modulation The default is Off To avoid multiple waveform changes you can enable it after setting up the modulation parameters Only one type of modulation can be activated at one time Also when FSK modulation is activated sweep or burst mode will be disabled FSKey STATe Query the FSK state 0 OFF or 1 ON will be returned FUNCtion PULSe HOLD WIDTh DCYCle Instruct the waveform generator to hold either the pulse width or the duty cycle When the pulse width is held constant the period is varied Minimum width and edge time restrictions apply If a command specifying the duty cycle is received the duty cycle is converted into equivalent pulse width in 141 seconds If Pulse Width Modulation is turned on the pulse width is held and the width deviation is held too as the period is varied Duty cycle deviation commands are converted to width deviation values When the duty cycle is held constant the period is varied Minimum width and edge time restrictions apply If a command specifying the pulse width is received the pulse width is converted into equivalent duty cycle in percent If Pulse Width Mo
120. nerator adjusts first the edge time then the pulse width or duty cycle the period if needed to accommodate the following the limitation EdgeTime s 0 625 x Period x DutyCycle In this case the edge time is decreased by the waveform generator to accommodate the pulse duty cycle 221 Settings conflict amplitude changed due to function When the new function chosen has a smaller maximum amplitude the waveform generator will automatically adjust the amplitude from the old value to the new smaller maximum value This may occur when the output units are Vrms or dBm due to the differences in crest factor for the various output functions 221 Settings conflict offset changed on exit from dc function In the dc voltage function the voltage level is controlled by adjusting the offset voltage the current amplitude is ignored When you select a different function the waveform generator will adjust the offset voltage as needed to be compatible with the current amplitude setting 86 221 Settings conflict FM deviation cannot exceed carrier The frequency deviation cannot exceed the carrier frequency or the waveform generator will adjust the deviation to a maximum allowed value 221 Settings conflict FM deviation exceeds max frequency The sum of the carrier frequency and the deviation cannot exceed the maximum frequency for the chosen function plus 100 kHz 20 1 MHz for sine and square 300 kHz for ramp and 5 1 MHz for arbitrary waveforms I
121. ngs Store up to 4 waveforms in nonvolatile memory Easy to use shortcut keys and knobs Free and easy to use PC applications Note Full G5100A specifications are included in Appendix A 2 Warranty Information If the equipment is used in a manner not specified by the manufacturer the protection provided by the equipment may be impaired Warranty PICOTEST CORP guarantees that this product meets its published specifications Under correct installation it should work as expected Warranty Period This equipment is warranted against defects in material and manufacturing for a period of one year from the date of shipment During the warranty period PICOTEST is responsible for necessary repairs as long as the product can be proved to be defective For warranty service or repair this product must be returned to a service facility designated by PICOTEST Please contact your local service representative for further assistance Excluded Items This warranty does not include consumptive parts such as fuses USB cord buttons and relays Neither does this warranty cover defects caused by improper installation improper or insufficient maintenance unauthorized modification improper peration ignorance of environmental specifications or improper software or interfacing Remarks No other warranty is expressed or implied except for the above mentioned The remedies provided herein are the buyer s sole and exclusive remedi
122. o specify the polarity of Ext Trig connector on the rear panel When the gate signal is true the waveform generator outputs a continuous waveform When the gate signal is false the current waveform is complete and the waveform generator stops while remaining at the voltage level corresponding to the starting burst phase of the selected waveform And the output stops immediately in a noise waveform when the gate signal is false The burst count burst period and trigger source are for triggered burst mode only BURSt MODE TRIG or GAT will be returned BURSt NCYCIes cycles MINimum MAXimum 128 Specify the number of cycles to be output in each burst triggered burst mode only The range is from 1 to 50 000 cycles in 1 cycle increments and the default is 1 cycle The maximum value depends on the burst period and frequency as shown below Specify Infinite to generate a continuous burst waveform When using the Immediate Internal trigger source TRIG SOUR IMM command the burst count must be less than the product of the maximum burst period and the waveform frequency Burst Count Maximum period x Frequency The waveform generator will automatically increase the burst period up to its maximum value to accommodate the specified burst count but it won t change the waveform frequency The burst count does not apply in the gated mode However if you specify a new burst count while in the gated mode
123. of 18 C to 280 Autorange enabled 10 DC offset set to OV 106 DC to 1 MHz 2 1 70 dBc non harmonic 1 MHz to 50 MHz 70 dBc 6 dB octave Phase Noise 10K 115 dBC Hz typical Offset whenf gt 1MHz V gt 0 1 Frequency 1 uHz to 25 MHz Rise Fall time 10 ns Overshoot 2 Variable 2090 to 8090 to 10 MHz Duty Cycle 40 to 60 to 25 MHz 1 of period 5 ns 50 duty 200 5 whenf gt 1MHz V gt 0 1 Frequency 1 uHz to 200 KHz Asymmetry Jitter RMS Li i 0 1 of k output Triangle inearity 0 190 of peak outpu Symmetry 0 0 100 0 Frequency 500 uHz to 10 MHz 20 ns minimum Pulse width 10 ns res period x 10s Variable lt 10 ns to 100 ns Edge Time Overshoot lt 2 200 ps whenf gt 50KHz V gt O 1Vpp 20 MHz typical Jitter RMS Bandwidth Frequency 1 uHz to 10 MHz Arbitrary Length 2 to 256 K Resolution 14 bits including sign 11 Spurious output at low amplitude is 75 dBm typical 107 Sample Rate 125 MSa s Min Rise Fall Time Linearity lt 0 1 o0f peak output 30ns typical Settling Time lt 250ns to 0 5 of final value Jitter RMS 6ns 30ppm Non volatile 4 waveforms 256K Points Memory COMMON CHARACTERISTIC Resolution 2 10mVpp to 10Vpp in 509 Range 20mVpp to 20Vpp in Hi Z Accuracy Amplitude y 1 Of s
124. oftkey under System to enter system related submenu 2 Press the Beep softkey to toggle between ON and OFF Remote interface operation SYSTem BEEPer SYSTem BEEPer STATe OFF ON 5 5 Sound G5100A normally sounds when the operation buttons and knob are used One may turn off the sound when needed The sound setting is stored in non volatile memory so the setting remains even after the waveform generator is turned off or the reset command is issued from the remote operation How to turn on off the beeper 1 Press the Utility button and then press the softkey under System to enter system related submenu 2 Press the Sound softkey to toggle between ON and OFF Remote interface operation SYSTem SOUNd STATe OFF ON 5 6 Error Display The waveform generator can store up to 20 syntax or hardware errors in its error queue Each error string may contain up to 255 characters The waveform generator beeps every time it detects an error unless the beeper is turned off Errors are stored in first in first out FIFO order and they are cleared once read To clear the error queue from the remote 63 interface use the CLS command The error queue will not be cleared by the RST command but will be cleared when the waveform generator is turned off Refer to Chapter 7 for more details about the error queue and error messages How to read error messages 1 Press the Help button to enter the help topic selection 2 Use the up and down soft
125. olatile memory To remove a waveform from volatile memory or any use defined waveforms in non volatile memory use DATA DEL command DATA NVOLatile CATalog List the names of all user defined arbitrary waveforms downloaded to non volatile memory Up to four waveform names will be returned If there is no wi waveform currently downloaded a null string will be returned To remove any use defined waveforms in non volatile memory use DATA DEL command DATA NVOLatile FREE Query the number of available slots for storing the user defined waveforms DATA DELete lt arb name gt Remove the specific arbitrary waveform from memory It can be the waveforms in volatile memory or the user defined waveforms in non volatile memory You cannot delete an arbitrary waveform that is currently output or an error will be generated DATA DELete ALL Remove all user defined waveforms from memory All waveforms in volatile memory and user defined waveforms in non volatile memory will be deleted but the built in waveforms in non volatile memory will not be deleted You cannot delete an arbitrary waveform that is currently output or an error will be generated DATA ATTRibute AVERage lt arb name gt Query the arithmetic average of all data points for the specified waveform 1 lt lt 1 The default waveform is the currently active one FUNC USER command If you query a waveform which is not stored in memory an err
126. old to 90 threshold of each edge The range for edge time is from 5 ns to 100 ns and the default is 5 ns The minimum value is 5 ns and the maximum value is 100 ns The specified edge time must fit in within the specified pulse width as shown below The waveform generator will adjust the edge time if necessary to accommodate the specified pulse width or duty cycle Edge time x 0 625 x Pulse width Or Edge time lt 0 625 x Period x Duty cycle 100 FUNCtion PULSe TRANsition MINimum MAXimum Query the edge time The edge time in seconds is returned 144 FUNCtion RAMP SYMMetry lt percent MINimum MAXimum gt Specify the symmetry percentage for ramp waves Symmetry represents the amount of time per cycle that the ramp wave is rising supposing the waveform polarity is not inverted The range is from 0 to 100 and the default is 100 The APPLY command overrides the current symmetry setting and used 100 symmetry The specified symmetry is remembered and will be used when you change the function and then come back to ramp waves The symmetry setting does not apply when you use ramp wave as the modulating wave in AM or FM FUNCtion RAMP SYMMetry MINimum MAXimum Query the current symmetry setting in percent FUNCtion SQUare DCYCle lt percent gt MINimum MAXimum Specify the duty cycle percentage for square waves Duty cycle represents the time per cycle that a square wave is at its high level suppo
127. oltage level select the dc voltage function using the FUNC DC command and then set the offset voltage level using the VOLT OFFS command You can set the dc level to any value between 5 Vdc into 50 ohms or 10 into an open circuit 165 VOLTage MINimum MAXimum Query the output amplitude for the current function The value is returned in the unit chosen by the VOLT UNIT command VOLTage OFFSet offset MINimum MAXimum Specify the dc offset voltage The default is O volts The minimum value is the most negative dc offset for the chosen function and amplitude and the maximum value is the largest dc offset for the chosen function and amplitude The output amplitude and offset voltage are related to Vmax as shown below Voffset 2 lt Vmax Where Vmax is the maximum peak voltage for the selected output termination 5 volts for a 500 load or 10 volts for a high impedance load The function generator will take the new specified output amplitude but the offset voltage may be reduced accordingly and a Settings conflict error is generated When the Output Termination Setting is changed the offset limits are automatically adjusted For instance when you change the output termination from 50 ohms to high impedance your offset voltage doubles thus it affects your output amplitude and when Output Termination has been changed from high impedance to 50 ohms the offset voltage decreases in half
128. or Specified arb waveform does not exist will be generated 134 DATA ATTRibute CFACtor arb name Query the crest factor of all data points for the specified waveform The crest factor represents the ratio of the peak value to the RMS value of the waveform The default waveform is the currently active one FUNC USER command If you query a waveform which is not stored in memory an error Specified arb waveform does not exist will be generated DATA ATTRibute POINts arb name Query the number of data points for the specified waveform A value from 1 to 262 144 will be returned The default waveform is the currently active one FUNC USER command If you query a waveform which is not stored in memory an error Specified arb waveform does not exist will be generated DATA ATTRibute PTPeak lt name gt Query peak to peak value of all data points for the specified waveform The default waveform is the currently active one FUNC USER command A value from 70 to 741 0 will be returned 41 0 indicates full amplitude The maximum amplitude will be limited if the data points do not span the full range of the output DAC Digital to Analog converter For example the built in sine wave does not use the full range of binary values between 1 and therefore its maximum amplitude is 6 087 Vpp into 50 ohms If you query a waveform which is not stored in memory an error Specified arb waveform does not exist
129. or in the error queue the waveform generator responds with 0 No Error The error queue is cleared with a power cycle or a CLS clear status command The RST reset command does not clear the error queue How to read error messages 1 Press the Help button to enter the help topic selection 2 Use the up and down softkeys to scroll the topic selection until View remote command error is highlighted 3 Press the softkey under Select to display the error messages 4 Press the softkey under DONE to leave the help topics 79 Remote interface operation Use this command to read one error from the error queue SYSTem ERRor Use this command to clear all the errors in the error queue CLS 7 1 Command Errors 101 Invalid character An invalid character was detected in the command string 102 Syntax error Invalid syntax was detected in the command string 103 Invalid separator An invalid separator was detected in the command string 105 GET not allowed GET is not allowed in a command string 108 Parameter not allowed More parameters than expected were received 109 Missing parameter Fewer parameters than expected were received 112 Program mnemonic too long More characters than allowed in the command header were received 113 Undefined header An invalid command was received 123 Exponent too large A numeric parameter with exponent larger than 32 759 was detected 124 Too many digits 80 A nume
130. own in the section of 0 dB Range Flatness Verification 2 Set up the function generator as follows a Output impedance 500 by pressing Utility and select Output Setup b Waveform Sine c Frequency 100 KHz d Amplitude 13 dBm Then assure that the output is enabled 3 On the power meter use the Relative Power function to set the current reading as the reference value This will allow you to compare 40 future measurement results in dB 4 Set the power meter offset to equal the 100kHz 10dB offset value previously calculated This sets the power meter to directly read the flatness error specification relative to 1 kHz 100kHz 10dB offset is calculated on the Amplitude and Flatness Verification Worksheet 5 Set the instrument to each output described in the table below and measure the output amplitude with the power meter the relative measurement in dB Picotest G5100A Measurement Output Setup Function Amplitude Frequency Nominal Error 500 Sine Wave 12 dBm 100 000 KHz 0 dB 0 1 dB 500 Sine Wave 12 dBm 500 000 KHz 0 dB 0 15 dB 500 Sine Wave 12 dBm 1 000 MHz 0 dB 0 15 dB 500 Sine Wave 12 dBm 5 000 MHz 0 dB 0 15 dB 500 Sine Wave 12 dBm 10 000 MHz 0 dB 0 3 dB 500 Sine Wave 12 dBm 15 000 MHz 0 dB 0 3 dB 500 Sine Wave 12 dBm 17 000 MHz 0 dB 0 3 dB 500 Sine Wave 12 dBm 20 000 MHz 0 dB 0 3 dB 500 Sine Wave 12 dBm 25 000 MHz 0 dB 0 5 dB 500 Sine Wave 12 dBm 29 000 MHz 0 dB
131. pecifying high level and low level also sets the offset For instance you will have an amplitude of 5 Vpp with an associated offset voltage of 500 mV when you set your high level to 2 Vpp and low level to 3 Vpp When the Output Termination Setting is changed the voltage levels are automatically adjusted For instance when you change the output termination from 50 ohms to high impedance your voltage shown on the display doubles and when Output Termination has been changed from high impedance to 50 ohms the voltage decreases in half invert the waveform relative to the offset voltage you can use the OUTP POL command VOLTage HIGH MINimum MAXimum Query the high voltage level VOLTage LOW lt voltage gt MINimum MAXimum Specify the low voltage level The default low level for all functions is 50 mV The minimum value is the most negative voltage level and the maximum value is the largest voltage level for the chosen function The high and low voltage level must conform the following restriction Vhigh Vlow lt Vpp max and Vhigh Vlow lt Vpp max 2 Where Vpp max is the maximum peak to peak amplitude for the chosen output termination 10 Vpp for a 50 ohm load or 20 Vpp for a high impedance load If you specify an invalid voltage level the waveform generator will adjust it automatically to the highest allowed value and Data out of range error is generated e The high voltage level should alw
132. played on the front panel e f the self test fails Self Test Failed and an error number are displayed If repair is required see chapter 9 Service for further details e Quick Verification The quick performance check is a combination of an internal self test and an abbreviated performance test specified by the letter Q in the performance verification tests This test provides a simple method to achieve high confidence in the instrument s ability to functionally operate and meet specifications These tests represent the absolute minimum set of performance checks recommended following any service activity Auditing the instrument s performance for the quick check points designated by a Q verifies performance for normal accuracy drift mechanisms This test does not check for abnormal component failures To perform the quick performance check do the following 1 Perform a complete self test A procedure is given Self Test 2 Perform only the performance verification tests indicated with the letter Q If the instrument fails the quick performance check adjustment 33 or repair is required Performance Verification Tests The performance verification tests are recommended as acceptance tests when you first receive the instrument The acceptance test results should be compared against the specifications After acceptance you should repeat the performance verification tests at every calibration interval If the instrum
133. positions for different needs Position 1 The default position is for packing as shown in Figure 2 3 Figure 2 3 Position 2 The adjusted position is for operation as shown in Figure 2 4 Figure 2 4 13 Position 3 The adjusted position is for carrying as shown in Figure 2 5 Figure 2 5 2 2 To Mount G5100A on the Rack G5100A can be mounted in a standard 19 inch rack cabinet using one of two optional kits qualified For each rack mounting kit there should be instructions and mounting hardware information Note So far Picotest doesn t provide the rack mount kits You d better to purchase them from other suppliers If Picotest has the kits as the accessory item in the future we ll put the information on our website To mount G5100A on the rack follow the procedures below Step 1 Pull out the handle When the handle is turned up to 90 pull out the handle from the waveform generator as shown in Figure 2 6 ty ty ty UJ Figure 2 6 14 Step 2 Release the bumpers Disassemble the front and rear bumpers as shown in Figure 2 7
134. r Definition Value Not Used 1 Not Used Returns 0 Not Used 2 Not Used Returns 0 Error Queue One or more errors are stored in the Error Queue Questionable Data One or more bits are set in the 8 Questionable Data Register Bits must be enabled Message Available 16 Data is available in the equipment s output buffer Standard Event 32 One or more bits are set in the Standard Event Register Bits must be enabled Master Summary b One or more bits are set in the Status Byte Register Bits must be enabled Not Used 128 Not Used Returns 70 Please note that the registers will be cleared under the following conditions 1 The Status Byte condition register is cleared when e the CLS command is executed 120 e the event register from one of the other register groups is read Only the corresponding bits are cleared 2 The Status Byte enable register is cleared when the SRE 0 command is executed you turn the power on and use the PSC 1 command the previously configured function generator Note The enable register won t be cleared after powering on if the PSC 0 command is used on the previously configured function generator B 1 8 2 Using SRQ Service Request and Serial Poll You must configure your PC to respond to the IEEE 488 SRQ and interreupt to use this capability Using the Status Byte enable register SRE command to select one of the condition bits
135. rb waveform Deleting the waveform that is currently outputting is not allowed 96 788 Cannot copy to VOLATILE arb waveform You can only use DATA COPY command to copy from VOLATILE not to VOLATILE 800 Block length must be even The binary data are represented as 16 bit integers They are sent in groups of two bytes DATA DAC VOLATILE command 810 State has not been stored The storage location specified in the RCL command was never used in previous SAV commands You cannot recall instrument state from an empty storage location 97 8 Operation Theory In this chapter picotest provides you some description of the circuitry shown on the schematics 8 1 Block Diagram G5100A s circuits here are divided into three parts analog circuits power suppliers including floating amp earth referenced circuitry and digital circuits The mentioned block diagram is shown after this discussion The main processor combines many instrument functions to one custom IC Its capacity manages the GPIB LAN interfaces and the USB interface through a controller It also communicates with the front panel and performs the keyboard scanning Picotest uses serial data to write to the display The cross isolation communication with the synthesis IC uses optically isolated serial data links The synthesis IC is regarded as a gate array and manages most of instrument functions It can also help clock generation pulse generation DDS and modulat
136. re burst The specified number of cycles in the BURS NYNC command takes priority over the burst period and the waveform generator increased the burst period to accommodate the burst count or the waveform frequency 221 Settings conflict burst count reduced to fit entire burst Since the burst period is currently at its maximum the waveform generator has adjusted the burst count to accommodate the waveform frequency 221 Settings conflict triggered burst not available for noise Noise function is not allowed in the triggered burst mode 221 Settings conflict amplitude units changed to Vpp due to high Z load dBm is not available as unit when the output termination is set to high impedance 221 Settings conflict trigger output disabled by trigger external When using the external trigger source the Trig Out signal is 82 automatically disabled 221 Settings conflict trigger output connector used by burst gate If you have enabled burst and selected gated burst mode the Trig Out signal is automatically disabled 221 Settings conflict trigger output connector used by FSK If you have enabled FSK and is using the external trigger source the Trig Out signal is automatically disabled 221 Settings conflict trigger output connector used by trigger external When using the external trigger source the Trig Out signal is automatically disabled 221 Settings conflict frequency reduced for user function The maximum output f
137. requency for arbitrary waveform is 10 MHz When you change function from one allowing higher frequency to arbitrary waveform the frequency is adjusted to 10 MHz 221 Settings conflict frequency changed for pulse function The maximum output frequency for pulse waveform is 10 MHz When you change function from one allowing higher frequency to pulse waveform the frequency is adjusted to 10 MHz 221 Settings conflict frequency reduced for ramp function The maximum output frequency for ramp waveform is 200 kHz When you change function from one allowing higher frequency to ramp waveform the frequency is adjusted to 200 kHz 221 Settings conflict frequency made compatible with burst mode The maximum output frequency for an internal triggered burst is 2 001 mHz The waveform generator has adjusted the frequency to be compatible with the current setting 221 Settings conflict burst turned off by selection of other 83 mode or modulation Only one modulation can be enabled at one time 221 Settings conflict FSK turned off by selection of other mode or modulation Only one modulation can be enabled at one time 221 Settings conflict FM turned off by selection of other mode or modulation Only one modulation can be enabled at one time 221 Settings conflict AM turned off by selection of other mode or modulation Only one modulation can be enabled at one time 221 Settings conflict PM turned off by selection of other mode or
138. ric parameter with too many digits gt 255 was detected 128 Numeric data not allowed A numeric parameter was received when the waveform generator was expecting a string parameter 131 Invalid suffix A suffix was incorrectly specified for a numeric parameter 138 Suffix not allowed A suffix is not supported for this command 148 Character data not allowed A discrete parameter was received when it was not expected 151 Invalid string data An invalid character string was received 158 String data not allowed A character string was received when it was not allowed for this command 161 Invalid block data For a definite length block the number of bytes of data sent does not match the number of bytes that you specified in the block header 168 Block data not allowed This command does not accept the data format 170 to 178 Expression errors Mathematical expressions are not acceptable for the instrument 81 7 2 Execution Errors 211 Trigger ignored AGET or TRG was received but the trigger was ignored 221 Settings conflict turned off infinite burst to allow immediate trigger source An infinite burst count is only allowed when an external or bus software trigger source is used 221 Settings conflict infinite burst changed trigger source to BUS An infinite burst count is only allowed when an external or bus software trigger source is used 221 Settings conflict burst period increased to fit enti
139. rms are covered in chapter 4 3 1 Case Disassembly Before case disassembly the handle has to be released according to the section 2 1 step 2 The procedures are Turn off the power Remove all cables from the instrument Rotate the handle upright and pull off Disassemble the front bumpers Unnecessary Unscrew the six screws on the rear instrument bumper Then remove the rear bumper Unscrew the screw under a tamperproof seal I OB de dcr qe Separate the case from the main body 21 Note The warranty will be invalid once the tamperproof seal is ruined without an authorized permission 3 2 Front Panel Disassembly To disassemble the front panel you have to obey the above procedures from 1 to 8 of the section 3 1 first and then carry out the following steps Use a slotted screwdriver to loose the two tenons Release the two cords from the main board Unscrew the two screws at one side of the front panel Unscrew the two screws at another side of the front panel pr e ee Use a tool to unscrew the eight angle screws which firm the BNC 22 terminals 6 Separate the front panel from the main body 7 Press the knob 8 Keep stressing it to proceed with the step 9 9 Press the other side of the knob 10 Pull out the bolt 11 Take out the pedestal 12 Pull out the part of the knob module 13 Unscrew the screws 14 Take down the display module and the light filter board 23 3
140. s 18 2 4 1 1 Front Display Menu Mode When powering on G5100A it shows the Menu Mode The following example is under operations of the sinewave function and the burst modulation Mode Trigger Output Information Information Units Status N Cycle Burst Display Dedi 1 ol 000 ms Icon IN Start Burst Gated Inf Phase Period Softkey Labels 2 4 1 2 Front Display Graph Mode To enter or exit the Graph Mode press the Graph key Parameter Parameter Name Value 00 000 100 Om Vp p Signal 0 000 Ground In Graph Mode only one parameter label is displayed for each key at one time 19 2 4 2 Rear Panel Figure 2 11 10MHz In External 10 MHz Reference Input Connector 10MHz Out Internal 10 MHz Reference Output Connector Modulation In External Modulation Input Connector Trig In Out FSK Burst Connector LAN Port GPIB Connector Optional USB Port Digital Pattern Output LVTTL Power cord Connector 10 Vent 20 3 Disassembly amp Assembly This chapter describes the basic operations and configurations that are commonly used to set up a waveform output Operations for outputting specific wavefo
141. se duty cycle as below Duty Cycle 2 100 x Wmin Period And Duty Cycle x 100 x 1 Wmin Period where Wmin 20 ns when period is not greater than 10s Wmin 200 ns when period is greater than 10 s but not greater than 1005 Wmin 2 us when period is greater than 100d not greater than 1000s 143 Wmin 20 ws when period is greater than 1000s The waveform generator adjusts the pulse duty cycle when needed to accommodate the specified pulse period From the remote interface a Data out of range error is generated and the pulse duty cycle is adjusted The specified pulse duty cycle may affect the edge time The waveform generator adjusts the edge time first and then the duty cycle if necessary to accommodate the period From the remote interface a Data out of range error is generated and the duty cycle and edge time will be restricted as below Duty cycle gt 100 x 1 6x Edge time Period And Duty cycle lt 100 x 1 1 6x Edge time Period Among the pulse width and pulse duty cycle the FUNC PULS HOLD command determines which of them is to be held and it affects this function when the waveform generator adjusts the period FUNCtion PULSe DCYCle MINimum MAXimum Query the pulse duty cycle The duty cycle in percent will be returned FUNCtion PULSe TRANsition seconds MINimum MAXimum Specify the edge time in seconds for both the rising and the falling edges The edge time represents the time from the 10 thresh
142. sing the waveform polarity is not inverted The default is 50 The range is from 20 to 80 when the waveform frequency is not greater than 10 MHz and from 40 to 60 when the waveform frequency is greater than 10 MHz The APPLY commands overrides this command and sets the duty cycle to 5096 The specified duty cycle is remembered and will be used when you change the function and then come back to square waves The duty cycle setting does not apply when you use square wave as modulating wave in AM PM FM or PWM The duty cycle of 5096 for square waves is used When you use square waveforms but then later specify frequency that cannot produce the current duty cycle the waveform generator automatically adjust the duty cycle to accommodate the newly specified frequency From the remote interface a Settings conflict error will be generated FUNCtion SQUare DCYCle MINimum MAXimum Query the current duty cycle in percent FUNCtion USER 1 arb name gt VOLATILE Choose one of the five built in arbitrary waveform functions one of four 145 user defined waveforms or the waveform currently downloaded to volatile memory The names of the five built in arbitrary waveforms are RISE EXP FALL NEG RAMP SINC and CARDIAC The default is EXP RISE If a waveform stored in volatile memory is desired specify the VOLATILE parameter This command does not output the chosen waveform Use
143. st be less than the difference between the period and the edge time 142 Pulse Width xPeriod 1 6x Edge time The waveform generator adjusts the edge time first and then the width if necessary to accommodate the period From the remote interface a Data out of range error is generated and the pulse width is adjusted The specified pulse width must be greater than the total time of one edge Pulse Width 1 6x Edge time Among the pulse width and pulse duty cycle FUNC PULS HOLD command determines which of them is to be held and it affects this function when the waveform generator adjusts the period FUNCtion PULSe WIDTh MINimum MAXimum Query the pulse width The pulse width in seconds will be returned FUNCtion PULSe DCYCIe lt percent MINimum MAXimum Specify the pulse duty cycle in percent The range is from 0 percent to 100 percent The default is 10 percent The minimum value is approximately O percent and the maximum value is approximately 100 percent The definition of the pulse duty cycle is described below Duty Cycle 100 x Pulse width Period Where the pulse width represents the time from the 50 threshold of the rising edge of the pulse to the 5090 threshold of the next falling edge The duty cycle is restricted by minimum pulse width and edge time which prevents you from setting exactly 0 percent 100 percent The minimum pulse width affects the value of the specified pul
144. st is generated is determined by the burst period When using the External source the waveform generator takes hardware trigger from the Trig In connector on the rear panel When using the Bus software trigger source the waveform generator outputs one burst each time it receives a bus trigger command Use TRG to trigger from the remote interface The Trigger button is lit when the waveform generator is waiting for a trigger The APPLY automatically sets the trigger source to be Immediate When the External or the Bus source is selected the burst count and burst phase remain in effect but the burst period is ignored To ensure synchronization when the Bus source is selected send the WAI wait command When the WAI command is executed the waveform generator waits for all pending operations to complete before executing any additional commands For example the following command string guarantees that the first trigger is accepted and the operation is executed before the second trigger is recognized 163 TRIG SOUR BUS TRG WAI TRG WAI You can use the OPC operation complete query command or the OPC operation complete command to signal when the burst is complete The OPC Command returns 1 to the output buffer when the burst is complete The OPC command sets the Operation Complete bit bit 0 in the Standard Event register when the burst is complete TRIGger SOURce Query the trigger source I
145. surements from procedure on Page 36 1 KHz OdB reference Vrms 1 KHz_10dB_reference Vrms 1 KHz_20dB_reference Vrms 2 Calculation of the dBm value of the rms voltage 1 KHz OdB reference dBm 10 109 5 0 x 1KHz OdB reference dBm 1 KHz 10dB reference dBm 10 x log 5 0 x 1KHz 10dB reference dBm 1 KHz 20dB reference dBm 10xlog 5 0 x 1KHz 20dB reference dBm 3 Enter the following measurements 100 KHz OdB reference Vrms 100 KHz 10dB reference E Vrms 100 KHz 20dB reference Vrms 4 Calculation of the dBm value of the rms voltages 100 KHz OdB reference 10 109 5 0 x 1KHz reference dBm 100 KHz 10dB reference dBm 10 109 5 0 x 1KHz 10dB reference dBm 100 KHz 20dB reference dBm 10 109 5 0 1KHz 20dB reference dBm 5 Calculation of the offset values 100kHz OdB offset 100 KHz OdB reference dBm 1 2 OdB reference dBm dBm 100kHz_10dB_offset 100 KHz_10dB_reference_dBm 1KHz_10dB_reference_dBm dBm 100kHz 20dB offset 100 KHz 20dB reference dBm 1 2 20dB reference dBm dBm 35 4 1 Internal Timebase Verification This test verifies the output frequency accuracy of the G5100A of the output frequencies are acquired from a single generated frequency 1 Connect a frequency counter as shown below the frequency counter input should be terminated at 50 Q Frequency Counter
146. t up Condition 19 Self Calibration The output is disabled Note Constants are saved after finishing this setup 6 Since the generated constants affect almost all behavior of the instrument there are no specific operational verification tests for steups 6 and 7 4 14 AC Amplitude Adjustment for High Impedance G5100A stores a calibration constant for each high impedance attenuator path The gain coefficient of each path is calculated using two measurements one is with the waveform DAC at output and one is with the waveform DAC at output Therefore the setups must be executed in pairs 1 Connect each unit as shown below ool Multimeter utput OUTPUT 48 Nominal Signal Condition Set up DC Level 8 1 0 V Output of 30 dB range 9 1 0 V Output of 20 dB range 10 0 3 V Output of 30 dB range 11s 0 3 V Output of 0 dB range 12 0 015 V Output of 30 dB range 13 0 015 V Output of 30 dB range 14 0 05 V Output of 20 dB range 15 0 05 V Output of 20 dB range 16 0 15 V Output of 10 dB range 17 0 15 V Output of 10 dB range 18 0 50 V Output of 0 dB range 19 0 50 V Output of 0 dB range 20 0 16 Output of 10 dB range Amplifier In 21 0 16 V Output of 10 dB range Amplifier In 22 0 51 Output of 0 dB range Amplifier In 23 0 51 V Output of 0 dB range Amplifier In
147. t up USB interface Connect the proper USB cable to the USB connector on the rear panel and your computer The waveform generator sets up the USB interface automatically once the cable is properly connected You may navigate from the Utility button the IO softkey and then the Show USB Id softkey to verify the USB interface ID 6 1 2 GPIB Interface Before you may set up the GPIB interface you need to insert the GPIB interface card into the interface slot on the rear panel install the G5100A application in your PC and execute the application To set up the GPIB interface connect the waveform generator and your computer with a proper GPIB cable and assign a GPIB address for the waveform generator The factory default GPIB address is 10 It can be set to any number between 0 and 30 The address is stored in non volatile memory so it is 65 not affected by power cycle or a remote interface reset command Avoid using the same address for the GPIB interface card in your computer How to set up GPIB interface 1 Press the Utility button and then the I O softkey 2 Press the softkey under GPIB Addr and enter a GPIB address using the numeric keypad or the knob 3 Press the softkey under DONE to finish the entry 6 1 3 LAN Interface You need to set up a few parameters before you can use the LAN Local Area Network interface Contact your network administrator to obtain the correct LAN settings for your waveform generator These settings and th
148. tent and the copyrights of the related documents for the equipment belong to PICOTEST CORP any reproduction would be illegal 1 4 Upkeep of G5100A Although G5100A waveform generator is very durable and weather resistant care should be taken not to expose it to severe impact or pressure Keep G5100A far from water and damp environment Calibration will be taken every year Please contact your local service representative for more information If the incorrect display or abnormal beeps occurred you should stop using the equipment at once Do not use the waveform generator around explosive gas or inflammable vapor To clean the surface of the waveform generator wipe it with a piece of dry and clean cloth 1 5 Safety Information A Caution Please read through the following safety information before using the product To avoid possible electrical shock or personal injury please read and follow these guidelines carefully Follow the guidelines in this manual and DO NOT use the waveform generator if the case is damaged Check the case and terminals and make sure all the devices are in the proper positions The waveform generator should be connected to the actual earth ground to avoid electrical shock Do not apply excessive voltage to the waveform generator Apply voltage within the rated range only If you need to open the instrument case or replace any parts follow the instructions in this manual You must be a qualified t
149. the output will be at the maximum amplitude when the modulating signal is at 5v and the output will be at the minimum amplitude when the modulating signal is at 5v The modulation output of G5100A will not exceed 5 peak into a 500 load even if the modulation depth is greater than 100 AM DEPTh MINimum MAXimum Query the modulation depth in amplitude modulation The modulation depth in percent is returned AM SOURce INTernal EXTernal Specify the modulating signal source If an External source is chosen the carrier waveform is modulated with an external waveform The modulation depth is controlled by the 5v external signal applied at the Modulation In connector on the rear panel Specifically the output will be at the maximum amplitude when the modulating signal is at 5v and the output will be at the minimum amplitude when the modulating signal is at 5v AM SOURCe Query the modulating source in amplitude modulation INT or EXT string indicating the modulating source will be returned AM STATe OFF ON Disable or Enable the amplitude modulation The default is OFF To avoid multiple waveform changes you can enable AM after setting the modulation parameters 126 AM STATe 70 OFF or 1 ON will be returned APPLy SINusoid frequency lt amplitude gt lt offset gt 11 Output a sine wave with specific frequency amplitude and offset The waveform is output as soon as the comm
150. tically handled by the IEEE 488 bus interface hardware and will be executed only after previous commands have accomplished Using the STB command can t clear an SRQ B 1 8 4 Using MAV The Message Available Bit The Status Byte Message Available bit 4 can be used to determine as data is able to be read into your PC The equipment continually clears bit 4 only after all messages are already read from the output buffer B 1 8 5 To Interrupt Your PC Using SRQ 1 Send a Device Clear message to return the function generator to a responsive state and clear its output buffer 2 Use the CLS command to clear the event registers and error queue 3 Set up the register masks using the ESE command to configure the Standard Event enable register and the SRE command to configure the Status Byte enable register 4 Send the OPC command and read the result to ensure synchronization 5 Enable your PC s IEEE 488 SRQ interrupt B 1 8 6 To Determine as a Command Sequence is Accomplished 1 Send a Device Clear message to return the function generator to a responsive state and clear its output buffer 2 Usethe CLS command to clear the event registers and error queue 3 Execute the ESE 1 command to enable the Operation Complete bit 0 in the Standard Event register 122 4 Send the OPC command and read the result to ensure synchronization 5 Execute your command string to program the desired configuration and the OPC command as
151. tion In the user mode users can switch the sweep shape to the arbitrary waveform SWEep SPACing Query the spacing used in sweeps LIN or LOG string indicating the spacing will be returned 160 SWEep TIME 1 seconds MINimum gt Specify the time duration in seconds to sweep from the start frequency to the stop frequency The range is from 1 ms to 500 seconds and the default is 1 second The number of discrete frequency points in the sweep will be calculated according to the specified sweep time SWEepe TIME Query the sweep time The sweep time in seconds will be returned SWEep STATe OFF ON Disable or enable the sweep mode The default is Off To avoid multiple waveform changes you can enable it after setting up the modulation parameters Only one type of modulation can be activated at one time Also when Sweep is activated modulation or burst mode will be disabled SWEep STATe Query the sweep state 70 OFF or 1 ON will be returned SYSTem ERRor Query and clear one error from the waveform generator s error queue Up to 20 errors can be stored in the queue Errors are retrieved in first in first out FIFO order Each error string may contain up to 255 characters The waveform generator beeps every time it detects an error unless the beeper is turned off Errors are cleared once you read them If more than 20 errors are detected too many Errors show up in the last place of th
152. to high impedance gt 10 The default is 500 The specified value is used for amplitude offset and high low level settings When the output termination is changed the displayed output amplitude offset and high low levels are automatically adjusted and no errors will be generated The waveform generator has a fixed series output impedance of 50 ohms to the front panel Output connector If the actual load impedance is 150 different than the specified value the displayed amplitude offset and high low levels will be incorrect When the output termination is set to high impedance you cannot specify the output amplitude in dBm The unit will be automatically converted to Vpp OUTPut LOAD MINimum MAXimum Query the current load setting in ohms Return the current load setting or 9 9E c 37 meaning high impedance OUTPut POLarity 4 NORMal INVerted gt Invert the waveform relative to the offset voltage The default is NORM in which the waveform goes positive during the first part of the cycle and in INV mode the waveform goes negative during the first part of the cycle The offset remains the same when the waveform is inverted and the Sync signal is not inverted OUTPut POLarity Query the polarity of the waveform NORM or INV indicating the polarity will be returned OUTPut SYNC Disable or enable the Sync connector the front panel The default is ON By disabling the Sync
153. to follow the requirements listed in Test Considerations before any adjustments 1 Press Utility on the front panel Select Run Cal on the Test Cal under System menu Enter setup number 1 and select BEGIN Set up Condition 1 When performing the Self Test the main output is disabled during test 45 2 If failing at any self test you must repair the instrument before keeping on the adjustment procedures Note The Self Test procedure takes about 5 seconds to complete 4 12 Frequency Adjustment Internal Timebase G5100A stores a calibration constant setting the VCXO to output exactly 10 MHz 1 Set the frequency counter resolution better than 0 1 ppm and the input termination to 500 If your frequency counter doesn t provide 500 input termination you have to provide an external one The connection is shown below AC Frequency O000000 Ooooooo Counter INPUT LISLE ALLELE OUTPUT 2 Use a frequency counter to measure the output frequency for each setup in the following table Nominal Signal Condition Setup Frequency Amplitude 2 lt 10 MHz 1 Vpp Output frequency is a bit less than 10 MHz 3 gt 10 MHz 1 Vpp Output frequency is a bit more than 10 MHz 4 10 MHz 1 Vpp Output frequency should be close to 10 MHz 5 10 MHz 1 Vpp Output frequency should be 10 MHz 1 ppm Note Constants are s
154. tored in non volatile memory so it is not affected by power cycle or the remoter interface reset command 67 How to set up LAN interface 1 Press the Utility button and then the softkey under I O 2 Press the softkey under LAN to enter the LAN submenu You have the options to set up IP address and related parameters under the IP Setup softkey DNS configuration under the DNS Setup softkey or to view the current LAN configuration under the Current Config softkey IP Setup Submenu 3 Press IP Setup softkey to enter the submenu 4 MODE a Press the softkey under MODE to toggle between DHCP OFF and DHCP ON b With MODE OFF you need to enter IP address subnet mask and default gateway as the steps shown below With MODE ON all these settings will be automatically obtained from the DHCP server 5 IP Address a If MODE is off press the softkey under IP Addr to set an IP address b Use only the numeric keys to enter an IP address C Press the softkey under Enter to finish the entry or the softkey under Cancel to withdraw the changes 6 Subnet Mask a If MODE is off press the softkey under SubMask to set subnet mask b Use only the numeric keys to enter the value C Press the softkey under Enter to finish the entry or the softkey under Cancel to withdraw the changes 7 Default Gateway a If MODE is off press the softkey under Def Gate to set up the IP address of the default gateway b Use only the numeric
155. trument configurations specified for each test over the remote interface You can then enter read back verification data into a test program and compare the results to the appropriate test limit values You can also adjust the instrument from the remote interface Remote adjustment is similar to the local front panel procedure You can use a computer to perform the adjustment by first selecting the required function and range The calibration value is sent to the instrument and then the calibration is initiated over the remote interface The instrument must be unsecured prior to initiating the calibration procedure e Performance Verification Tests Use the Performance Verification Tests to verify the measurement 32 performance of the instrument The performance verification tests use the instrument s specifications listed in the Specifications You can perform three different levels of performance verification tests e Self Test A brief memory self test is executed automatically while turning on the instrument This limited test assures that the instrument is operational The operation procedures are 1 Press Utility on the front panel 2 Select the Self Test softkey from the Test Cal submenu under system menu The instrument will automatically perform the complete self test procedure when you release the key The self test will complete in approximately 5 seconds f the self test is successful Self Test Passed is dis
156. ts in the event register By contrast the STAT PRES command will clear all bits in the enable register In order to enable bits in the enable register to be reported to the Status Byte Register you have to write a decimal value corresponding to the binary weighted sum of the corresponding bits QuestiogablerDatarRegisten Erron Queue STATQUES COND STAT QUES EVEN STATQUES ENABLe lt value gt STAT QUES 7 Output Buffen C EN SYSTERRa o D lt a gt E rs Serial Poll lt value gt STB SRE Tes i Summary Bit RQS ESR ESE ule ESE 119 B 1 8 1 The Status Byte Register The Status Byte summary register reports conditions from the other status registers The waiting data in the function generator s output buffer is reported at once on the Message Available bit 4 While clearing an event register from one of the other register groups the corresponding bits in the Status Byte condition register will be also cleared In addition reading all messages from the output buffer including pending queries will clear the Message Available bit To set the enable register mask and generate a service request SRQ you must write a decimal value such as SRE command to the register For more information of the status byte register refer to the following table Decimal Bit Numbe
157. uffer contained data from a previous command the previous data is lost 420 Query UNTERMINATED A query command was sent to read the output buffer over the interface but no such command that generates data to the output buffer was previously sent for execution 430 Query DEADLOCKED An executed command generated too much data for the output buffer and the input buffer is also full The command continues to execute but the data is lost 440 Query UNTERMINATED after indefinite response The IDN command must be the last query command within a series of commands in a command string 7 5 Instrument Errors 501 Cross isolation UART framing error 502 Cross isolation UART overrun error Internal hardware failure 580 Reference phase locked loop is unlocked The PHAS UNL ERR STAT has been turned on and the internal phase locked loop is currently unlocked 93 7 6 Self Test Errors 621 Self test failed square wave threshold DAC A possible malfunctioning DAC failed DAC multiplexer channels or associated circuitry 623 Self test failed dc offset DAC 624 Self test failed null DAC 625 Self test failed amplitude DAC A possible malfunctioning DAC failed DAC multiplexer channels or associated circuitry 626 Self test failed waveform filter path select relay 627 Self test failed 10 dB attenuator path 628 Self test failed 20 dB attenuator path 629 Self test failed 20 dB amplifier path These errors indicate that th
158. umber Revision Code The Revision code contains four numbers separated by dashes Firmware revision number Book kernel revision number ASIC revision number Printed circuit board revision number LRN Query the waveform generator and return a string of SCPI commands containing the current settings learn string You can then send the string back to the instrument to restore this state at a later time For proper operation do not modify the string before sending it back to the waveform generator The string should contain about 1 500 characters To avoid possible instrument errors execute the RST command first and then send the string back to the waveform generator MARKer OFF ON Disable or enable the frequency marker The default is OFF When the frequency marker is off the signal output from the Sync connector is the normal Sync signal for the carrier waveform The OUTP SYNC command is overridden by the setting of the MARK command so when the marker frequency is turned on and the sweep mode is also turned 147 on the OUTP SYNC command is ignored MARKer 70 or 1 indicating the enable state of the frequency marker will be returned MARKer FREQuency 1 frequency MINimum Specify the marker frequency The signal on the front panel Sync connector goes to a logic low at the marker frequency during the sweep The range is from 1 2 to 200 MHz limited to 200 kHz for ramps and 10M
159. up to match the measured amplitude in dBm using the numeric keypad or knob Select ENTER VALUE Note To get dBm you must use the numeric keypad except the knob to enter the number and then select dBm 4 After executing setup 77 a If your calibration procedures require you to verify the adjustment just made exit the calibration menu and perform 10 dB Range Flatness Verification b If you are executing all the adjustments and verifying the instrument s performance continue with the next procedure 4 17 Adjusting 20 dB Range Flatness Make sure to correct the measurements for the specifications of the attenuator you apply For instance if the nominal attenuator value is 20 dB at the specified frequency you have to add 20 dB to the power meter reading before inputting the value Note Most power meters would require an attenuator 20 dB or 53 special power head to measure the 20 dB output 1 Connect each unit as shown below POWER HEAD ND L O OUTPUT 2 Use the power meter to measure the output amplitude for each of the setups in the following table Nominal Signal Condition Setup Frequency Amplitude 78 100 KHz 1 77 Vrms 18 dBm Power Meter Reference 79 1MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 80 5MHz 1 77 Vrms 18 dBm Flatness for 20dB Elliptical Filter 81 10MHz 1 77 Vrms 18 dBm Flatness for 20d
160. uplicate the functionality of a command already described in this chapter 169 B 5 IEEE 488 Compliance Information The SCPI commands used in 5100 are in conformance with the SCPI standard Version 1992 0 The common commands are listed below ACLS ESE NRf ESE ESR IDN LRN OPC OPC PSC 0 1 PSC RCL lt 01112131 4 gt RST SAV 112 3 4 SRE lt NRf gt SRE STB TRG PSI WAI B 6 Using Device Clear to Halt Measurements Device Clear is a special IEEE 488 low level bus message It is designed to be used to return the waveform generator to a responsive state Different programming languages and IEEE 488 interface cards provide their own special commands to perform this function The status registers the error queue and all configuration states are left intact 170 when a device clear is performed In particular device clear performs the following actions The input and output buffers are cleared An overlapped command if any will be terminated without Operation Complete indication applies to the TRG command Any sweep burst in progress will be immediately aborted Get the waveform generator ready to accept a new command string 171 C General Specifications item Limitation amp description Power Supply Voltage 100V 240V 50Hz 60Hz 100V 120V 400Hz Power Consumption 80 VA Maximum Operating Humidity 1 0
161. urst modes to provide a way to poll or interrupt the computer when 149 the TRG command is complete OPC Returns 1 to the output buffer after the previous commands have been completed Other commands can not be executed until this command completes OUTPut OFF ON Disable or enable the Output connector on the front panel The default is OFF The Output key is lit when enabled The APPLy command overrides the current OUTP command setting and automatically enables the Output connector The Output connector will be disabled when an excessive external voltage is applied to it To re enable it remove the excessive voltage and use this command to enable it again This command changes state of the output connector by switching the output relay However this command does not zero the voltage to be output before switching the relay Thus the output signal may have glitches for about a millisecond until the signal stabilizes You can minimize these glitches by first setting the amplitude to the minimum using the VOLTage command and the offset to zero using the VOLTage OFFSet command before changing the output state OUTPut 70 or 1 indicating the on off state of the Output connector on the front panel is returned OUTPut LOAD ohms Select the desired output termination It can be any value in ohms between 10 and 10kQ INF sets the output termination
162. ut lt 1000 s Wmin 20 ws for period gt 1000 s The duty cycle deviation also needs to conform to the following rules Duty Cycle Deviation Duty Cycle 160X Edge Time Period And Duty Cycle Deviations 100 Duty Cycle 160X Edge Time Period When you choose an external source PWM SOUR EXT the duty cycle deviation is controlled by the 5V signal level shown on the Modulation In connector the rear panel It means that when the modulating signal is at 5V the output will be at its maximum width deviation and when the modulating signal is at 5V the output will be at its minimum duty cycle Lower external signal levels produce less deviation and negative signal levels produce negative deviation Note The operation of this command is affected by FUNC PULS HOLD command FUNC PULS HOLD command decides if the pulse width or the duty cycles are to be held constant as the period varies If the pulse width is held constant so is the pulse width deviation If the duty cycle is held constant so is the duty cycle deviation If one is held constant the other specified in the command will be automatically converted to the equivalent value PWM DEViation DCYCles MINimum MAXimum Query the duty cycle deviation in PWM The duty cycle deviation in percent will be returned 158 PWM SOURce INTernal EXTernal Specify the modulating signal source The waveform generator takes either an internal or an external source The default is inter
163. ut viPrintf vi SAV 2 n Store state in memory location 2 Use the RCL 2 command to recall the stored state output viClose vi viClose defaultRM Example Linear Sweep This program found in the ExamplesWMLinear Sweep subdirectory the CDROM creates a linear sweep for a sine wave It sets the start and stop frequencies and the sweep time Linear Sweep include visa h include lt stdio h gt void main int argc char argv 176 ViSession defaultRM vi 0 ViStatus status char instrDesc 2 USB0 5710 5100 TW00009009 0 INSTR viOpenDefaultRM amp defaultRM status viOpen defaultRM instrDesc NULL VI NULL amp vi if status VI SUCCESS printf Can not Open device s n instrDesc return This program sets up a linear sweep using a sinusoid waveform It sets the start and stop frequency and sweep time viPrintf vi RST n viPrintf vi FUNCtion SINusoid n Select waveshape viPrintf vi OUTPut LOAD 50 n Set the load impedance to 50 Ohms default viPrintf vi VOLTage 1 n Set the amplitude to 1 Vpp viPrintf vi SWEep SPACing LINear n Set Linear or LOG spacing viPrintf vi SWEep TIME 1 n Sweep time is 1 second viPrintf vi FREQuency STARt 100 n Start frequency is 100 Hz viPrintf vi FREQuency STOP 20e3 n Stop frequency is 20 kHz Frequency sweep limits may also be set as FREQuency CENTer and viPrintf vi OUT
164. w the structure of the SCPI status system used by the function generator The following page shows the status system recording different conditions and states of the instrument in several register groups Each of the register groups consists of several low level registers including Condition registers Event registers and Enable restisters which control the action of specific bits within the register group Please refer to the diagram below A Condition Register monitors the state of the instrument continuously The condition register bits are updated in real time and aren t latched or buffered Their characterics are read only and can t be cleared when you read the register This register query returns a decimal value corresponding to the binary weighted sum of all bits set in that register An Event Register latches different events when changes occur in the condition register No buffering is offered in this register While setting an event bit subsequent events corresponding to that bit will be ignored The setting will be cleared by query commands such as STAT QUES EVEN and CLS This register query returns a decimal value corresponding to the binary weighted sum of all bits set in that register 118 An Enable Register defines which bits in the event register will be reported to the Status Byte register group To write and to read from an enable register are allowable The CLS command won t clear the enable register but it clears all bi
165. will assert the IEEE 488 SRQ line If bit 6 is transited from a 0 to a 1 an IEEE 488 service request message will be sent to your PC The PC will poll the equipment on the interface bus to identify which one is the asserting service request line That s why the equipment with bit 6 is set in its Serial Poll response Note When a Serial Poll is issued bit 6 will be cleared in the Serial Poll response The service request line will be cleared as well Other bits won t be affected including the Master Summary Bit You can obtain the Serial Poll response by sending an IEEE 488 Serial Poll message Then the equipment sends a one byte binary response In the meantime the IEEE 488 bus interface hardware will handle a Serial Poll performance automatically Note ASCII s and some other GPIB s commands are unlike a Serial Poll which is executed immediately and doesn t involve the equpment s main processor So the status indicated by a Serial Poll might not indicate the effect of the most recent command You can use the OPC Command to ensure that commands sent previously to the equipment have accomplished before executing a Serial Poll 121 B 1 8 3 To read the Status Byte Using STB The STB command is like a Serial Poll but its process is like ASCII equipment command The STB Command s result is the same as a Serial Poll but bit 6 won t be cleared once the conditions are still enabled The STB command won t be automa
166. you ordered GPIB interface card Optional 1 8 Options and Accessories The following options and accessories are available from Picotest for use with G5100A Please refer to Table 1 1 Table 1 1 Accessory list Part Name Part Number GPIB Card M3500A opt04 11 2 Overview This chapter prepares you for using the G5100A waveform generator You may want to check if you have all the parts with your waveform generator first All our products are handled and inspected professionally before shipping out to our customers If you find any damaged missing parts or have any doubts about the product please contact your local service representative immediately and do not attempt to operate the damaged product 2 1 To Adjust the Handle You may adjust the carrying handle to suit your needs The following figures show you how to do it I Taking off the handle from the Waveform generator Step 1 Turn up the handle Pull slightly outward on both sides of the handle and slowly rotate it up vertically to 90 as shown in Figure 2 1 Figure 2 1 Step 2 Pull out the handle When the handle is turned up to 90 pull out the handle from the waveform generator as shown in Figure 2 2 ql O LJ UJ UJ 7 Jp ooo Figure 2 2 II Adjusting the position for your convenience Here are some example
167. z Internal Deviation DC 25MHz Carrier Sine Square Ramp Arb Source Internal external Internal Modulation Sine Square Ramp Triangle Noise Arb Frequency 2mHz to 20KHz Internal Deviation 0 0 to 360 109 Carrier Pulse Internal Modulation Frequency Internal Deviation Internal external Sine Square Ramp Triangle Noise Arb 2mHz to 20KHz 090 100 of pulse width Carrier Sine Square Ramp Arb Source Internal external Internal Modulation 50 duty cycle Square Frequency Internal 2mHz to 100KHz External Voltage Range 5V full scale Modulation Input Resistance 8 7KQ typical Input Bandwidth DC to 20KHz Waveforms Sine Square Ramp Arb Type Linear or logarithmic Direction up or down Sweep Time 1 ms 500 Sec Trigger Internal External or Manual Marker falling edge of sync signal programmable frequency Waveforms Sine Square Ramp Triangle Noise Arb Type Internal external Start Stop Phase 360 to 4 360 Internal Period 105 500Sec Gated Source External trigger 1 FSK uses trigger input 1 MHz maximum 1 Sine and square waveforms above 10 MHz are allowed only with an infinite burst count 110 ERE Trigger Source Internal External or Manual Level TTL compat

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