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Newtons4th NumetriQ PSM3750 Series Startup Manual

Phase sensitive multimeter
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PSM3750
START UP GUIDE
Firmware v1_27
rd
23
February 2016

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Summary of Contents for Newtons4th NumetriQ PSM3750 Series

  • Page 1 PSM3750 START UP GUIDE Firmware v1_27 February 2016...

  • Page 3: Table Of Contents

    PSM3750 Quick User Guide CONTENTS Contents............Page.1 Getting Started..........Page.2 Unpacking and Contents........Page.2 PSM3750 Handle Fitment Instructions....Pages.3-4 Safety............... Page.5 Safety Instructions..........Page.5 Cautions............. Page.6 Warranty Terms..........Page.7 Front Panel Layout Diagram......Page.8 Front Panel Display Key Functions......Pages.9-20 Rear Panel Layout Diagram.......

  • Page 4: Contents

    PSM3750 Quick User Guide 1. Getting Started Unpacking When you receive your product, check that the following items are included for the appropriate PSM Instrument. Refer to the contents list below for each model. If any item is missing or damaged during transportation, immediately contact your local sales distributor or N4L office CONTENTS Start...
  • Page 5 PSM3750 Quick User Guide 1.2 Fitment of the PSM3750 Carry/Tilt handle The PSM3750 Phase Sensitive Multimeter is supplied with a Carry/Tilt Handle that is located within the accessory pack. The handle allows a user to position the instrument upwards at one of two angles for easier viewing when the instrument is positioned below the line of sight.
  • Page 6 Correct 3 Correct 4 A correctly fitted handle will have the ‘N4L Newtons4th’ wording in the correct reading plane when the handle is to the front of the instrument (Pic. 3) Also, a correctly fitted handle will allow storage under the unit (Pic. 4)

  • Page 7: Safety

    There are no user serviceable parts inside the instrument – do not attempt to open the instrument, refer service to the manufacturer or his appointed agent. Note: Newtons4th Ltd. shall not be liable for any consequential damages, losses, costs or expenses arising from the use or misuse of this product however caused.

  • Page 8: Cautions

    PSM3750 Quick User Guide 2.2 CAUTIONS  Do not use a damaged power cord or cables Doing so may cause an electric shock or a fire  Do not place any object on this instrument  Do not use this instrument if faulty If you suspect the instrument to be faulty, contact your local N4L office or representative for repair (see section 12) Page 6...
  • Page 9 36 months from the date of purchase In the unlikely event of a problem within this guarantee period, first contact Newtons4th Ltd or your local representative to give a description of the problem. Please have as much relative information to hand as possible – particularly the serial number and release number these can be found by pressing the SYSTEM button then the “Left Arrow”...

  • Page 10: Front Panel Layout Diagram

    PSM3750 Quick User Guide 4. Front Panel Layout 1. Display Screen 2. Screen Display Function Buttons 3. PSM Function Mode Buttons 4. Handle 5. Measurement Control Function Keys 6. Rubber Feet 7. Menu Selection and Cursor Controls 8. Measurement Settings Buttons 9.

  • Page 11: Acquisition

    PSM3750 Quick User Guide 4.1. PSM3750 Display Key Functions Key & Sub Categories Description Acquisition Control: Used configuring inputs ACQU appropriate to source and nature of signals being analyzed Input Channel selection dependent upon model PSM3750-2CH Only 2 input channels available PSM3750-3CH Select between 2 or 3 channel inputs In normal acquisition mode the window over which...
  • Page 12 PSM3750 Quick User Guide Smoothing filter will gather the data and average out over a sliding window time scale. This is very useful when gathering data which could be affected by noise. Each speed above has its own time constant for Smoothing filtering and data updates.

  • Page 13: Sweep

    PSM3750 Quick User Guide The bandwidth of the instrument usually set to “Auto” Bandwidth can be forced to “Wide” or “Low” when not in “Auto” mode, heterodyning is disabled Wide Select to set bandwidth to 5MHz Select to set bandwidth to 100KHz Auto Select to set bandwidth into auto mode All ac measurements using the PSM3750 generator...
  • Page 14 PSM3750 Quick User Guide The trim function is a powerful and versatile feature TRIM that allows closed loop control of the generator amplitude ac Trim Data Disabled Select to disable ac trim function Select to allow the generators output to be adjusted, Channel 1 and maintain the measured voltage or current from Select to allow the generators output to be adjusted,...
  • Page 15 PSM3750 Quick User Guide ALARM Alarm 1 Data Alarm on selected parameter and threshold Zoom 1 Zoom 1 parameter selected for alarm threshold Zoom 2 Zoom 2 parameter selected for alarm threshold Zoom 3 Zoom 3 parameter selected for alarm threshold Zoom 4 Zoom 4 parameter selected for alarm threshold Alarm Type (Alarm 1)
  • Page 16 PSM3750 Quick User Guide None No auxiliary device connected Impedance Analysis Interface- converts the PSM3750 into a high performance LCR meter with true 4 wire kelvin connections that are taken directly to the component under test without the need for external shunts.
  • Page 17 PSM3750 Quick User Guide Step Type Logarithmic Linear Manually enter a value by which the frequency will Frequency Step Size increase / decrease in relation to pressing the left and right arrows Output Signal generator output will be switched off Select to switch on signal generator dc Only Select signal generators output control to be dc only...
  • Page 18 PSM3750 Quick User Guide Coupling Default setting will allow both ac and dc signals to be ac+dc calculated in all measurements Select ac for measuring signals that are biased on a dc level (such as an amplifier operating on a single supply or the output of a dc PSU) Channel 2 input control Input...
  • Page 19 PSM3750 Quick User Guide General system options Set Clock Manual setting required. Use numerical keys Manual setting of date and year required, month Set Date settings are preset Display Colour Select to set screen display in colour Select to set screen display in White font on a Black White on Black background Select to set screen display in Black font on a White...
  • Page 20 PSM3750 Quick User Guide Zoom 2 High The data displayed in zoom 2 may be displayed to one Resolution digit greater resolution than normal Disabled Function will be disabled Enabled Function will be enabled Show Scaled Range Disabled Function will be disabled If enabled and you set a scale factor on CH1 or CH2 Enabled the “re-scaled range”...
  • Page 21 PSM3750 Quick User Guide The power meter measures the total power and fundamental power of the signal present at the input Power meter terminals bandwidth instrument (>1MHz). Above 5MHz only the fundamentals are measured In LCR meter mode, channel 1 measures the voltage across the component under test and channel 2 LCR Meter measures the current through it.

  • Page 22: Fra

    PSM3750 Quick User Guide Press table to view results either during, or at the TABLE completion of a frequency sweep in tabular format Press graph during frequency sweep to view plotted data points whilst sweep is in process, or view graph GRAPH plots once sweep is complete.
  • Page 23 PSM3750 Quick User Guide 5. Rear Panel Layout 1. Input Connections 2. Output Connections 3. Mains Supply Inlet 4. Communication Ports 5. Auxiliary Ports 6. IAI2 Connection Port Page 21...
  • Page 24 PSM3750 Quick User Guide 6. Basic Key Operations This chapter is designed to help the user familiarise themselves with the instrument by setting up some basic functions 6.1 SET UP FOR POWER ON Install Equipment Installation of Equipment Plug in and turn on power Power Supply Connection 6.2 SETTING THE TIME Power Analyzer Default Screen Appears...
  • Page 25 PSM3750 Quick User Guide 6.3 SET THE DATE Press Flashing Red Cursor moves to Date Use Numerical keys Set Date within Flashing Box Press Enter Key Numerical Day of Month is set Press Flashing Red Cursor moves to Month Press Month Calendar Opens Press Select Month to be entered...
  • Page 26 PSM3750 Quick User Guide 6.5 ADJUST KEYBOARD BEEP Press Key 4 Times Red cursor moves to Keyboard beep Press Changes between Enable / Disable option Press Enter Key Keyboard beep now set Now that you have familiarised yourself with the instruments keypad we can complete this section by filling in the User Data Information 6.6 USER DATA Press “SYS”...
  • Page 27 PSM3750 Quick User Guide 7. PSM3750 Quick User Guide N4L Frequency Response Analyzer PSM3750 is a self contained test instrument, with one output and two or three input channels which incorporates a suite of test functions. PSM3750 has a wide bandwidth, isolated, generator output that can be used as a signal generator for sine, square, triangle, sawtooth waveforms or true white noise.
  • Page 28 PSM3750 Quick User Guide 7.1 GETTING STARTED The PSM3750 is supplied ready to use – it comes complete with an appropriate power lead and either 2 or 3 sets of test leads (dependent upon model). It is supplied fully calibrated and does not require anything to be done by the user before it can be put into service.
  • Page 29 PSM3750 Quick User Guide The display should now indicate a magnitude value of about 1.4V on all channels, each of which should indicate the 3V range having been selected. Check that the gain reads 0.000dB 0.010dB, and that the phase reads 0.000 0.010 . Page 27...
  • Page 30 PSM3750 Quick User Guide 7.2 ZOOM FUNCTION Within the display screen you are able to select up to 4 measurements that can be made more prominent from the rest, these can be selected and changed by the user as required. To select or change any zoom measurement Action Result...
  • Page 31 PSM3750 Quick User Guide Zoom 2 Mode Press Zoom+ to display the 4 selected zoomed measurements as shown Note: These will be displayed in the order they were selected. Most data is displayed to 5 digits but for extra resolution 6 digits, this can be displayed when enabled in ZOOM level 2 or 3.
  • Page 32 PSM3750 Quick User Guide 7.3 MEASUREMENT OPTIONS 7.4 ACQU – Acquisition Options PSM3750 comes in either a 2 or 3 channel version. The 3 channel version can be set to display just 2 channels if the third channel is not in use. In normal acquisition mode, the window over which the measurements are computed is adjusted to give an integral number of cycles of the input waveform.
  • Page 33 PSM3750 Quick User Guide All measurements have to be made over a complete waveform cycle so the window is extended to cover one or more complete cycles even if this is a longer period than the nominal update rate. The minimum number of cycles to be measured in each window can be set from 1 to 100.
  • Page 34 PSM3750 Quick User Guide The filter dynamics are usually set to “auto reset” where the filtering is reset in response to a significant change in data. This speeds up the response instrument changing conditions. The function can be disabled so that the filtering has a fixed time constant, which would have an exponential response to a step change.
  • Page 35 PSM3750 Quick User Guide The bandwidth of the instrument usually set to “auto” can be forced to “wide” or “low”. When not in auto selection, heterodyning is disabled and the bandwidth is either 5MHz wide or 100 KHz low to minimise noise when making measurements at low frequencies.
  • Page 36 PSM3750 Quick User Guide 7.5 SWEEP – Frequency sweep options All AC measurements using the PSM3750 can be swept across a frequency range. The start frequency, stop frequency and number of steps up to 2000 can be entered manually by the user. Setting the “steps”...
  • Page 37 PSM3750 Quick User Guide Graph and Table results from a sweep set to “Linear” Graph and Table results from a sweep set to “Log” To view the Graph or Table data as displayed above either during or upon the completion of a sweep, push the appropriate button from the instruments front panel.
  • Page 38 PSM3750 Quick User Guide Each sweep can be configured to be either a single or repeating sweep. Each graph can be configured to be left in auto scaling mode or be set manually by the operator. When “graph 1” or “graph 2” scaling is set to manual the user will have the opportunity manually...
  • Page 39 PSM3750 Quick User Guide Within the display screenshot we can observe that there is a very small change within the dB and Phase data points from a sweep carried out. In auto scaling these points would form straight line manually setting each scale as in the earlier screenshot we are then able to view this data as a plotted graph.
  • Page 40 PSM3750 Quick User Guide 7.6 FRA Sweep with AC Coupling When conducting a sweep in FRA Mode it is always advisable to set the coupling to AC only. AC coupling is useful because the DC component of a signal acts as a voltage offset, and removing it from the signal can increase the resolution of signal measurements as shown in the following screenshots.
  • Page 41 PSM3750 Quick User Guide From the RMS Voltmeter display screen we can see the 2 sets of measurements from the same input. CH1 is displaying both the ac+dc components of the input signal with the ranging set onto the 10V scale. CH2 which is set to ac only displays the rms ac measurement from the 100mV input whilst ignoring the 5V dc offset with the autoranging now set onto the 300mV range.

  • Page 42: Trim

    PSM3750 Quick User Guide 7.7 TRIM The trim function on the PSM3750 allows closed loop control of the generator amplitude. It will allow a specific measurement on CH1, CH2 or (CH3 if fitted) to be set and the generator output will be adjusted to maintain this fixed voltage or current.
  • Page 43 PSM3750 Quick User Guide Selecting the ac trim data to be CH1 we can set the ac level at 500mV with a tolerance of 10% Note this will be an RMS setting. Press “Enter” to confirm the settings Revisiting the “output” display you will now see that the amplitude has been reset...

  • Page 44: Comms

    PSM3750 Quick User Guide 7.8 COMMS The “COMMS” mode will allow the user to set up how the measurement data will be displayed within the data resolution parameter and change the format to which the instrument responds to future commands via a Comms interface further information each...
  • Page 45 PSM3750 Quick User Guide The PSM3750 can be connected with an IAI2 Impedance Analysis Interface This converts the PSM3750 into a high performance LCR meter with true 4 wire Kelvin connections. More information relating to the IAI can be found within section 7.2 PSM3750 + IAI.
  • Page 46 PSM3750 Quick User Guide further information each parameter please refer to section 4.1 Further options are available by using keys. MODE Within the “MODE” parameter the user can select which measurement function they wish to select from the drop down menu. These are also available direct function...

  • Page 47: Psm3750 Measurement Functions

    PSM3750 Quick User Guide 8. PSM3750 – Measurement Functions: 8.1 FRA - Frequency Response Analyzer PSM3750 measures the gain and phase of channel 2/3 (dependant on model) relative to channel 1 using a Discrete Fourier Transform (DFT) algorithm at the fundamental frequency.
  • Page 48 PSM3750 Quick User Guide Within the “OUTPUT” mode set the amplitude parameter to the peak voltage signal required from instruments generator. Frequency can be set to display the on screen measurements this stated frequency, once all parameters are set then change the “output” to ON. Within the CH1 /CH2 menu set the coupling to ac only as described in an earlier section called “FRA Sweep...
  • Page 49 PSM3750 Quick User Guide The following screenshots are the results obtained from our SMPS 10Ω load test Upon completion sweep pressing “Table” will present measurement points within a tabular format as shown. You will notice that there is a small yellow arrow at the side of the 50 data point this will correspond...

  • Page 50: Pav - Phase Angle Voltmeter

    PSM3750 Quick User Guide 8.2 PAV – Phase Angle Voltmeter A phase angle voltmeter (or vector voltmeter, or phase sensitive voltmeter) measures the signal at one input compared to the magnitude + phase of the signal at a reference input. The results may be expressed as magnitude and phase, or as separate in-phase and quadrature components.
  • Page 51 PSM3750 Quick User Guide A null meter display may be selected via the PAV menu to allow adjustment of a circuit for minimum phase or component. To activate the “null meter” function press the “PAV” button and then press the arrow until the red box surrounds the null meter parameter, press the...
  • Page 52 PSM3750 Quick User Guide The parameter on the display depends on the selected component: parameter display null meter in-phase in-phase quadrature quadrature tan tan tan magnitude magnitude magnitude phase phase rms2 rms2/1 rms2/rms1 rms2/rms1 in-phase ratio in-phase ratio in-phase ratio LVDT diff LVDT LVDT...
  • Page 53 PSM3750 Quick User Guide PSM3750 computes a multiplying factor that it applies to the start frequency for the specified number of steps. Note that due to compound multiplication it is unlikely that the end frequency will be exactly that programmed. The frequency sweep is initiated by the START key, and when completed the data can be viewed as a table or graphs or printed out.
  • Page 54 PSM3750 Quick User Guide 8.3 LCR – Impedance Meter Impedance Analysis – an overview Real Components are never ideal resistors, capacitors or inductors because of unwanted parasitic effects arising from their construction. It is useful to model a real component as an appropriate combination of ideal resistance, capacitance and inductance.
  • Page 55 PSM3750 Quick User Guide Setting Up Site the IAI2 under the PSM3750; connect the 3 short BNC leads from the BNC connectors on the rear of the IAI2 (OUT, CH1, and CH2) to the corresponding isolated BNC connectors on the PSM3750 above it. Connect the ribbon cable from the extension port on the rear of the IAI2 to the extension port on the rear of the PSM3750 as shown in the diagram below.
  • Page 56 PSM3750 Quick User Guide Front View Connect the Red Kelvin Lead to the Signal Sense connectors on the front of the IA2, and connect the Black Kelvin Lead to the Sense – and Signal – BNC connectors. Page 54...
  • Page 57 PSM3750 Quick User Guide Switch on the IAI2 and the PSM3750. All 4 led’s on the front of the IAI2 should illuminate. The display on the front of the PSM3750 should illuminate with the model name and the firmware version for a few seconds whilst it performs some initial tests.
  • Page 58 PSM3750 Quick User Guide If the PSM3750 displays the following message: Then check that the extension port cable has not been damaged and has been correctly fitted between the IAI2 and the PSM3750. If the message does not appear but all 4 led’s remain illuminated and flashing then check that the IAI2 is correctly connected to the supply, switched on at the rear and the fuse is intact.
  • Page 59 PSM3750 Quick User Guide Using the IAI2 The device under test (DUT) is measured by the IAI2 in a configuration where the component is ground referenced. This allows the IAI2 to be used to measure the impedance of devices even when one terminal is connected to earth. The IAI2 has 4 selectable shunts to sense the current through the DUT SHUNT VALUE...
  • Page 60 PSM3750 Quick User Guide Shunt Selection The different shunts built into the IAI2 allow the test conditions to be modified to optimise the measurement accuracy. In general a higher value shunt increases the magnitude of the current signal at the A/D and decreases the magnitude of the voltage signal across the component;...
  • Page 61 PSM3750 Quick User Guide The “normal” and “high” shunts are general purpose and between them cover a wide impedance range. SHUNT IMPEDANCE RANGE FREQUENCY RANGE <50Ω <10MHz NORMAL 50mΩ to 50kΩ HIGH 5Ω to 5MΩ VERY HIGH >1MΩ <1kHz Of course this table is only a guide and each “shunt” can be used beyond the limits quoted.
  • Page 62 PSM3750 Quick User Guide Connecting to the DUT Kelvin Leads: The IAI2 comes supplied with a pair of Kelvin Leads for low frequency use (<5MHz) which make simple connections to a discrete component The Kelvin Leads can be clipped onto the body of the DUT, as close as possible to the component For accurate measurements it is essential that the...
  • Page 63 PSM3750 Quick User Guide High Frequency Fixture: For testing components over all frequencies, there is a dedicated test fixture available from N4L as an accessory. This can clip directly onto the front of the IAI2 by means of 4 BNC to BNC couplers supplied with the fixture to minimise effects due to cabling.
  • Page 64 PSM3750 Quick User Guide Compensation: Any cables or fixtures used to interface the DUT to the IAI2 will introduce measurement errors because of the stray impedances. At low frequencies the stray effects can usually be ignored except when measuring at the extremes of the impedance range or when exceptionally high accuracy is needed.
  • Page 65 PSM3750 Quick User Guide SHORT CIRCUIT CONNECTION Compensation Menu Settings With the PSM3750 set in LCR mode, press the “ZERO” button to display the LCR compensation screen as shown below. Select the compensation parameter to correspond with the test to be undertaken on the DUT.
  • Page 66 PSM3750 Quick User Guide Single Compensation: Selecting single compensation will conduct zero compensation, short or open circuit at the same desired frequency that the test will be carried out at. Sweep Compensation: Sweep compensation needs to be configured exactly the same as the sweep details for the DUT to be tested.
  • Page 67 PSM3750 Quick User Guide LCR Measurements: Press the LCR mode button on the front of the PSM3750 Instrument to enable LCR measurement settings to be made as shown below. Parameter setting If the parameter option within the LCR menu is set to “auto” the PSM3750 will display capacitance or inductance according to the phase of the measurement.
  • Page 68 PSM3750 Quick User Guide Conducting a sweep in LCR mode: The PSM3750 is able to operate either in Real time mode at a single frequency where the measurements are filtered and updated on the display; alternatively it can sweep a range of frequencies and present the results as a table or graph. Before performing a sweep, either series circuit or parallel circuit must be selected from within the LCR mode as per the screenshot below.
  • Page 69 PSM3750 Quick User Guide The PSM3750 computes a multiplying factor that it applies to the start frequency for the specified number of steps. Note that due to compound multiplication it is unlikely that the end frequency will be exactly that programmed. The frequency sweep is initiated by the “START”...
  • Page 70 PSM3750 Quick User Guide Selecting Test Conditions: The Frequency and Voltage of the generator are selected on the PSM3750 Instrument. The actual Voltage across the DUT depends upon the Impedance of the component at the test frequency and the impedance of the selected shunt. The PSM3750 instrument clearly displays the measured Voltage across the DUT and the measured Current through it.

  • Page 71: Rms - True Rms Voltmeter

    PSM3750 Quick User Guide 8.4 RMS – True RMS Voltmeter The RMS Voltmeter measures the total rms values of the signal present at the input terminals to the bandwidth of the instrument (<5MHz). Care must be taken when measuring low signal levels to minimise noise pick up on the input leads. The RMS Voltmeter measures the following elementary values: 1.
  • Page 72 PSM3750 Quick User Guide The measurements are computed over rectangular windows with no gaps. The processing power of the DSP allows the measurements to be made in real time without missing any samples. In this way the measured rms is a true value even if the signal is fluctuating.

  • Page 73: Power - Power Meter

    PSM3750 Quick User Guide 8.5 POWER – Power meter The power meter measures the total power and fundamental power of the signal present at the input terminals to the bandwidth of the instrument (>1MHz). Above 5MHz only the fundamentals are measured. One of the inputs on the PSM3750 must be configured as an external shunt input.

  • Page 74: Scope - Oscilloscope

    PSM3750 Quick User Guide 8.6 SCOPE – Oscilloscope Mode The PSM3750 provides a digital storage oscilloscope function in order to view the waveforms being measured. The settings for the oscilloscope are configured by pressing the “SCOPE” button twice. Upon entering the “SCOPE” menu, the following screenshot will be displayed. Timebase: The display for the oscilloscope is divided into 10 divisions along the time axis with the selected timebase displayed in the bottom left hand corner of...
  • Page 75 PSM3750 Quick User Guide Trigger Mode: The trigger mode may be set to be; Auto (trigger if possible but do not wait) Normal (wait indefinitely for trigger) Single shot (wait for trigger then hold) The single shot option is reset using the “TRIGGER” key Trigger Polarity: The trigger polarity may be set to rising edge or falling edge Trigger HF Reject:...
  • Page 76 PSM3750 Quick User Guide Screenshot from Scope display with “Dual” cursors configured From the screenshot above (output set to 50Hz / 2Vpk) the display shows all fundamental measurements from the position of cursor 1. Also displayed is the time difference between the 2 cursors, “delta t” = 20.00ms with the timebase set to 10ms/div.
  • Page 77 PSM3750 Quick User Guide 8.7 HARM – Harmonics Mode The PSM3750 Instrument contains a harmonic analyser which computes multiple DFTs on the input waveforms in real time. The settings for the harmonic analyzer are configured from within the “MODE” function as there is no direct button to press. Press “MODE”...
  • Page 78 PSM3750 Quick User Guide Press “ENTER” once all selections have been made, this will take you directly to the Harmonics Real time Display and results shown will be referenced to the input signal frequency as shown below. For the purpose of this manual the output signal was generated using the PSM3750’s own generator as shown within the next screenshot, where it can be seen that the output frequency was set to 1 kHz.
  • Page 79 PSM3750 Quick User Guide To view the input signal within the oscilloscope mode then simply press the “SCOPE” button on the instruments front panel, this will display the waveform of the signal being received as shown. Here we are able to view the squarewave signal that was previously set within the “OUTPUT”...

  • Page 80: Eis - Electrochemical Impedance Spectroscopy

    PSM3750 Quick User Guide 8.8 EIS - Electrochemical Impedance Spectroscopy Electrochemical Impedance Spectroscopy is performed using the following accessories; - BATT470 EIS Current Shunt - 1x Oscilloscope Probe - 2x Crocodile Clips - 2x ESF10m 10mHz AC coupling units - 4x 4mm Banana leads - 1x BNC lead (Safety isolated) For easy configuration of the PSM3750, refer to the N4L website in order to download a PSM3750 "BATT470"...
  • Page 81 PSM3750 Quick User Guide TEST PROCEDURE: 1. Set SW1 + SW2 to “PRE-CHARGE” 2. Wait 1 minute for settling 3. Connect GEN -ve to BATT470 4. Connect ESF10m to PSM CH1 and CH2 Input 5. Connect PSM CH2 to BATT470 CH2 6.

  • Page 82: Comms Settings

    PSM3750 Quick User Guide 9. Comms Settings The Comms Settings menu provides an interface for the user to set the method of connection and the ability to configure the ports as required. Resolution The default resolution setting for the PSM3750 is “Normal” this will set the Data Resolution to 5 decimal points plus any exponent eg: +1.2345+E00.
  • Page 83 PSM3750 Quick User Guide Selecting RS232 will then open up the “Baud Rate” option. Select applicable data speed rate from the 4 options given in the drop down menu (Default Setting is 19200). To use a USB lead to connect, set the interface parameter to read “USB”.
  • Page 84 PSM3750 Quick User Guide Configuring the instruments interface to GPIB will automatically set the IEEE address to 23 this can be changed within address parameter in the range 0 to 30 total possible addresses available). Recall with Program The recall with program parameter will allow pre-set...
  • Page 85 PSM3750 Quick User Guide 9.1 Saving Sweep details to USB Memory Stick The following section explains the procedure for storing a Frequency Sweep onto USB memory stick. 1. Setup Sweep Parameters (SWEEP MENU) 2. Press START to commence Sweep 3. Insert Memory Stick into front USB memory port 4.
  • Page 86 PSM3750 Quick User Guide  Select memory storage to USB memory stick  Select data to be stored as results  Select action for the data to store  Select a location for the data to be stored (999 available) ...
  • Page 87 PSM3750 Quick User Guide 11. File location box will appear as below 12. Click on and open the dropdown menu box showing “All Excel Files” and change to “All Files” 13. Locate saved .txt file from folders 14. Double click on selected file to open Page 85...
  • Page 88 PSM3750 Quick User Guide 15. After opening your file a further screen will appear as shown below, now change file type from “Fixed width” to “Delimited” 16. With “Delimited” selected click on “Next” 17. Delimiters screen will appear as shown within the next screenshot 18.
  • Page 89 PSM3750 Quick User Guide 19. New screen will appear then click on “Finish”. Data will be exported into an Excel spreadsheet as shown Page 87...

  • Page 90: Program: Store/Recall/Delete

    PSM3750 Quick User Guide 9.2 Program Store / Recall / Delete The following section explains the procedure for storing / recalling or deleting a program to or from the instruments internal memory or USB memory Stick. 1. Press “PROG” button to open up program store / recall mode 2.
  • Page 91 PSM3750 Quick User Guide 4. Select action to be taken association with the data selected Page 89...
  • Page 92 PSM3750 Quick User Guide 5. Select the location that the associated action is to be recalled from, stored to or deleted from, there are 999 locations available NOTE: Location 0 = FACTORY DEFAULT and cannot be changed Location 1 = Upon start up should any program be stored within program 1 then the PSM will automatically recall this program.
  • Page 93 PSM3750 Quick User Guide 7. Upon implementing any of the above actions then remember to scroll down to “EXECUTE” and press “ENTER” to validate your selection / action. Page 91...
  • Page 94 All N4L software packages are available free of charge as a downloadable file from our website www.newtons4th.com If you are not already registered with us then please take the time to visit our website and register by clicking the support section on the main header, then clicking on the “go to downloads”...
  • Page 95 PSM3750 Quick User Guide 11. PSM3750 Guide for testing the basic sweep functionality on the instrument Switch on the Instrument and allow a 30 minute warm up period 1. Connect BNC leads to the rear of the instrument as shown ...
  • Page 96 PSM3750 Quick User Guide  Press “SWEEP” button  Use the arrow to scroll to sweep start, enter 1 from the numerical keypad and press “ENTER” 1.0000hz will now be set  Use the arrow to scroll to sweep end, enter 10 from the numerical keypad and then press the “PAV”...
  • Page 97 PSM3750 Quick User Guide 5. Press the “HOME” button twice to set the display back to FRA real time as shown below 6. Commence Sweep  Press the “START” button to commence sweep  Press the “TABLE” button to see results being accumulated across the full frequency range.
  • Page 98 PSM3750 Quick User Guide  Upon completion of the top 5 parameters use the arrow until the red box surrounds execute  Press “ENTER” a message will appear underneath execute as shown  Use the to move the red box to the new message and press “ENTER”...
  • Page 99 PSM3750 Quick User Guide  Data results will now be transferred onto the memory stick and an onscreen message will be displayed upon completion  Inserting the memory stick into your PC you will now find 2 files a .txt and N4L file as shown below, save these to a location on your PC R005 represents “location 5”...

  • Page 100: Repair & Recalibration Process

    In the event of any problem with the instrument, during or outside of the guarantee period, contact your local representative. Newtons4th Ltd offer a full repair and re-calibration service It is recommended that the instrument be re-calibrated annually Contact details: 1.

  • Page 101: Psm3750 Specifications

    PSM3750 Quick User Guide 13. PSM3750 Specifications MEASUREMENT SPECIFICATION Frequency Response Analyser Magnitude, Gain (CH1/CH2, CH2/CH1), Gain (dB), Measurement offset gain (dB), phase (⁰) Frequency Range 10μHz – 50MHz 0.01dB + 0.01dB/MHz < 5MHz Gain Accuracy in dB 0.31dB + 0.04dB/MHz < 50MHz 0.025⁰...
  • Page 102 PSM3750 Quick User Guide True RMS Voltmeter Channels 2 (Optional 3 Channel Available) DC to 5 MHz Frequency Range 5MHz to 50MHz fundamental only Measurement RMS, AC, DC, Peak, CCF, Surge, dBm Basic Accuracy (AC) As Phase Angle Voltmeter + 0.05mV Basic Accuracy (DC) 0.1% range + 0.1% reading + 0.5mV Power Meter...
  • Page 103 PSM3750 Quick User Guide Input Ranges Differential Inputs 2 or 3 x Isolated Inputs 500Vpk Connectors Isolated BNC Coupling AC+DC, AC (<10Vdc), AC (<500Vdc) Max Common Mode 500Vpk from earth 3mV, 10mV, 30mV, 100mV, 300mV, 1V, 3V, 10V, 30V, Input Ranges 100V, 500V, 300mV*, 1V*, 3V*, 10V* *High Voltage Attenuator Scaling...
  • Page 104 PSM3750 Quick User Guide Ports RS232 Baud Rate to 19200, RTS/CTS flow control Analog Output Bipolar ±10V on any measured function - BNC Sync Output Pulsed Synchronised to generator Extension Ports (N4L Accessories) 15 pin female D type LAN (Standard) 10/100 base-T Ethernet auto sensing RJ45 GPIB (Standard) IEEE488.2 Compatible...

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