Page 1 (217) 352-9330 | Click HERE Find the Tektronix VX4240 at our website:...
Page 2 User Manual VX4240 Waveform Digitizer/Analyzer Module 070-9140-06 This document supports firmware version 1.00 and above. Warning The servicing instructions are for use by qualified personnel only. To avoid personal injury, do not perform any servicing unless you are qualified to do so.
Page 3 Copyright Tektronix, Inc. 1991, 1994. All rights reserved. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved. Printed in the U.S.A.
Page 4 Tektronix, with shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.
Page 5: Contacting Tektronix
Or contact us by e-mail: tm_app_supp@tek.com For product support outside of North America, contact your local Tektronix distributor or sales office. Service Contact your local Tektronix distributor or sales office. Support Or visit our web site for a listing of worldwide service locations. http://www.tek.com...
Page 6 8444 AB Heerenveen The Netherlands declare under sole responsibility that the VX4240 and Options 01 and 02 only meets the intent of Directive 89/336/EEC for Electromagnetic Compatibility and Low Voltage Directive 73/23/ECC for Product Safety. Compliance was demonstrated to the...
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Page 12: General Safety Summary
Symbols and Terms Terms in this Manual. These terms may appear in this manual: VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 13 Symbols on the Product. The following symbols may appear on the product: Double Protective Ground WARNING CAUTION Insulated (Earth) Terminal High Voltage Refer to Manual VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 14: Service Safety Summary
Disconnect power, remove battery (if applicable), and disconnect test leads before removing protective panels, soldering, or replacing components. To avoid electric shock, do not touch exposed connections. VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 15 Service Safety Summary VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 24 Temperature drift: <0.03% of full scale / C (all ranges) Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 25 10 KHz 100 KHz 1 MHz Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 111 Section 3 Command: N (fft summation method) Syntax: N[x] Purpose: The N command can be used to select the method used by the FFT built-in processing routines to determine the peaks of the spectrum. The default is to use a three cell summation as described in Appendix E.
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Page 174: Appendix H: Performance Verification
Table A–3. In the test sequences you will be instructed to issue Interface Bus Interactive Control (ibic) commands to set up the VX4240-under-test system. Commands to the VX4240 may be entered in upper or lower case. Please refer to the NI-488.2M User Manual for additional information. If you are using a different controller, simply substitute the equivalent commands.
Page 175: Equipment Required
The verification sequences in this procedure are valid when the following requirements are met: The VX4240 module covers are in place and the module is installed in an approved VXIbus mainframe according to the procedure in the chapter Getting Started.
Page 176: Test Record
Appendix H: Performance Verification VX4240-Under-Test Configuration To execute this procedure, the VX4240-under-test must be installed in an approved VXIbus system. Minimally, this system must contain the elements listed in Table A–2. Table A–2: Elements of a Minimum VX4240 -under-test System...
Page 177 2.5200 V 0.020 V –2.480 V –4.8800 V Measure Min. 4.8800 V 2.4800 V –0.020 V –2.520 V –4.9200 V A–42 VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 178 Add Temperature Drift: <0.03% of full scale 1 C (all ranges). AC Voltage Accuracy 1 kHz 10 kHz 100 kHz 3.464 V Max. Measure Min. 7.070 V Max. Measure Min. A–43 VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 179: Performance Verification Tests
Appendix H: Performance Verification Self Test The VX4240 includes a built-in self test feature (BITE) which is executed automatically at power-on and (more extensively) when the Self Test command (S) is issued. Internal test routines and reference circuitry verify the CPU, RAM, A/D converter, and the analog input amplifiers.
Page 180 Appendix H: Performance Verification VXIbus Interface This sequence verifies that the VX4240 configures correctly and communicates properly with your GPIB system controller. Equipment No additional test equipment is required for this sequence. Requirements Prerequisites All prerequisites listed on page A–40 1.
Page 181 (Observe S00000.., see Query command 3-79) 3. Verify the VX4240 VXIbus interrupt capability with the following steps: NOTE. Make sure your Slot 0 controller and the VX4240-under-test are set to the same interrupt level. Also, if you are using National Instruments NI-488.2 software, make sure Auto Serial Polling is disabled to prevent the SRQ from being reset prior to a visual check.
Page 182 Using equal length coxial cables and a second , connect the VX4240 SIG IN+ and SIG IN– inputs to the other side of the BNC-T at the DVM. 2. Set the VX4750 to its power-on default, for a 1 M output impedance, and to generate a 1 kHz, 9.8 V...
Page 183 Prerequisites All prerequisites listed on page A–40 1. Connect the DC Calibrator to the VX4240 SIG IN + input using a BNC cable and a BNC to dual Banana adaptor. Set the DC Calibrator to 0.49 V. 2. With the commands below, set the VX4240 to its power-on state, select the 0.5 V range, and trigger an acquisition.
Page 184 5. Check the 2.0 V range listed in Table A–8. Verify the voltages to be within 0.2% of the full scale range ( 8 mV). A–49 VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 185 +2.50000 2.480 to 2.520 VDC +0.00000 –0.020 to +0.020 VDC –2.50000 –2.520 to –2.480 VDC –4.90000 –4.9200 to –4.8800 VDC A–50 VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 186 Command To Send DC Voltage to Verify +19.0000 18.920 to 19.080 VDC +10.0000 9.9200 to 10.080 VDC +0.0000 –0.080 to +0.080 VDC A–51 VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 187 10. Check the 100.0 V range listed in Table A–13. Verify the voltages to be within 0.2% of the full scale range ( 400 mV). A–52 VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 188 +50.000 49.600 to 50.400 VDC +00.000 –0.400 to +0.400 VDC –50.000 –50.400 to –49.600 VDC –99.000 –99.400 to –98.600 VDC A–53 VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 189 Prerequisites All prerequisites listed on page A–40 1. Connect the VX4750 to the VX4240 SIG IN+ and the DVM using a BNC-T (connected to the VX4750 FUNC OUT signal), two coxial cables, and a BNC to Dual Banana adaptor (connected to the DVM input). Set the DVM to measure AC RMS.
Page 190 “Freq 10 kHz” set vx4750 DVM reading 3.0 % ibwrt “Freq 100 kHz” This completes the VX4240 verification procedure. A–55 VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 191 Appendix H: Performance Verification A–56 VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 192 WARNING The following servicing instructions are for use only by qualified personnel. To avoid injury, do not perform any servicing other than that stated in the operating instructions unless you are qualified to do so. Refer to all Safety Summaries before performing any service.
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Page 194: Appendix I: Adjustment Procedure
Proper adjustment of the VX4240 may be achieved when the following requirements are met: The VX4240 module covers are in place and the module is installed in an approved VXIbus mainframe according to the procedures in Section 2 of the...
Page 195: System Requirements
012-0057-01 (three required) System Requirements In order to perform this procedure, the VX4240 must be installed in an approved VXIbus system. At a minimum, the system must contain the elements listed in Table A–16. Table A–16: Elements of a Minimum VX4240 Adjustment System...
Page 196 Appendix I: Adjustment Procedure Table A–16: Elements of a Minimum VX4240 Adjustment System (Cont.) Item Number and Description Minimum Requirements Example Purpose GPIB Cable 2 m length, GPIB connectors on Tektronix part number Connecting PC-GPIB to Slot 0 each end 0120–0991-00...
Page 197 0.5 V and 5.0 V ranges and then adjusts for maximum common mode rejection. New adjustment constants are stored in non-volatile memory. 1. Connect the DC Calibrator to the VX4240 SIG IN+ and SIG IN– using equal length coxial cables, a BNC-T, and a BNC-to-Dual Banana adaptor.
Page 198 Appendix I: Adjustment Procedure 7. Set the VX4240 to auto-adjust DC gain and offset for the 5.0 V range: ibwrt ”ks5\n” (Observe hex values and then the RDY) 8. Set the VX4240 to display the differential voltage for the 5.0 V range, and while observing the front panel display, adjust R1514 for the closest reading to 0.0 ( 15.0 maximum):...
Page 199 3. Set the DC calibrator to –1.96V. 4. Send the command “R;CT10002;VD2;TF\n”. 5. Send the command “AA10000/0\n”. 6. Read the VX4240 and get the measured negative voltage. 7. Use the voltage measured in step 6 and the following equation to calculate the new calibration voltage.
Page 200 Connect the VX4750 FUNC OUT signal to one side of the BNC-T. c. Using equal length coxial cables and a second BNC-T, connect the VX4240 SIG IN+ and SIG IN– inputs to the other side of the BNC-T at the DVM.
Page 201 0.004 V (Readjust for 7.070 V 0.004 V 11. Set the VX4240 to display the RMS input voltage for the 50 V range and while observing the front panel display, adjust C1422 for the closest reading to 7070 20: (Adjust C1422 for 7070 20) 12.
Page 202 GPIB read. The buffer will read the module until it receives an END BIT (bit 8 set in the response to a byte request command). The Tektronix products above do not set bit 8 on readback, thus the GPIB-VXI/C Slot0 will fill its buffer with data (approximately 450 Kbytes).
Page 203 Appendix J: Binary Transfer A–66 VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 204: Appendix K: Ieee-488 Address
Appendix K: IEEE-488 Address If you are using a National Instruments GPIB-VXI/C Slot 0 module, you may have trouble attaining an IEEE-488 address for the VX4240. When the system is powered on the GPIB-VXI/C Slot 0 resource manager does not assign a GPIB address because the RESMAN delay is too short to allow the VX4240 to perform its self test.
Page 205 : 0x070000 Number Procs 0x20 Number Exchgs : 0x20 Number Msgs : 0x180 Console: Enabled RM Wait period : 0 seconds A–68 VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 206 –––– CI Nonvolatile User Configuration Variables –––– 0x00:00000000 0x01:00000000 0x02:00000000 0x03:00000000 0x04:00000000 0x05:00000000 0x06:00000000 0x07:00000000 0x08:00000000 0x09:00000000 0x0A:00000000 0x0B:00000000 0x0C:00000000 0x0D:00000000 0x0E:00000000 0x0F:00000000 A–69 VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 207 1). Edit pSOS Configuration 2). Edit VXI Interrupt Handler Logical Addresses 3). Edit Resource Manager Configuration 4). Edit Servant Area and DC Configuration A–70 VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 208 0). Edit Local Register Configuration 1). Edit pSOS Configuration 2). Edit VXI Interrupt Handler Logical Addresses 3). Edit Resource Manager Configuration A–71 VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 209 17. Press the space bar. The following information should appear on the screen. GPIB–VXI Nonvolatile Configuration Main Menu (C) 1995 National Instruments ================================================ A–72 VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 210 ******************************************** 19. Power off the card cage and remove the RS-232 cable from the GPIB- VXI/C Slot 0. This completes the resource manager delay change. If you need any assistance call 1-800-TEK-WIDE or contact your local Tektronix representative. A–73 VX4240 Waveform Digitizer/Analyzer Module Instruction Manual...
Page 211 Appendix K: IEEE-488 Address A–74 VX4240 Waveform Digitizer/Analyzer Module Instruction Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 212 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 213 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

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