Keysight 34951A User Manual
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Keysight 34951A User Manual

Keysight 34951A User Manual

4-channel isolated d/a converter with waveform memory module
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Keysight 34951A 4-Channel
Isolated D/A Converter with
Waveform Memory Module
User's Guide

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Summary of Contents for Keysight 34951A

  • Page 1 Keysight 34951A 4-Channel Isolated D/A Converter with Waveform Memory Module User’s Guide...

  • Page 2: Safety Information

    OR OF ANY INFORMATION Edition forth therein, does not require or CONTAINED HEREIN. SHOULD permit, among other things, that KEYSIGHT AND THE USER HAVE A Edition 3, July 1, 2019 Keysight: (1) Furnish technical SEPARATE WRITTEN AGREEMENT Printed in: information related to commercial...

  • Page 3: Safety Symbols

    Frame or chassis (ground) terminal Standby supply. Unit is not completely disconnected from ac mains when Caution, risk of electric shock switch is off Caution, risk of danger (refer to this manual for specific Warning or Caution information) Keysight 34951A User’s Guide...

  • Page 4: Additional Safety Notices

    Failure to comply with these precautions or with specific warnings or instructions elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Keysight Technologies assumes no liability of the customer’s failure to comply with the requirements.

  • Page 5: Do Not Remove The Instrument Cover

    Do Not Modify the Instrument Do not install substitute parts or perform any unauthorized modification to the product. Return the product to an Keysight Sales and Service Office for service and repair to ensure that safety features are maintained. In Case of Damage...

  • Page 6: Waste Electrical And Electronic Equipment (Weee) Directive 2002/96/Ec

    To return this unwanted instrument, contact your nearest Keysight Service Center, or visit http://about.keysight.com/en/companyinfo/environment/takeback.shtml for more information. Sales and Technical Support To contact Keysight for sales and technical support, refer to the support links on the following Keysight websites: – www.keysight.com/find/34980a (product-specific information and support, software and documentation updates) –...

  • Page 7: Table Of Contents

    ........6 34951A 4-Channel Isolated D/A Converter with Waveform Memory Module .
  • Page 8 34951A D-Sub Connector Pinout ......19 34951T Terminal Block ........20...

  • Page 9: 34951A 4-Channel Isolated D/A Converter With Waveform Memory Module

    34951A 4-Channel Isolated D/A Converter with Waveform Memory Module The 34951A 4-Ch Isolated D/A module (DAC module) has four independent, isolated DAC channels that output DC voltage up to ±16V or DC current up to ±20 mA (Level Output Mode). Since the DACs are electrically isolated, you can stack or combine multiple DACs to have up to ±64 V on a module.

  • Page 10: Waveform (Trace) Mode

    The waveforms are stored in volatile memory. Therefore, whenever power to the 34980A is cycled, the volatile memory empties of data it has contained. The waveform feature of the 34951A is not intended as a full-featured substitute for a function generator, but as a means of storing point-to-point updates.

  • Page 11: Clock Out

    The line between external Trigger Out and external Trigger In is shared. You can NOTE use the external Trigger Out to provide the external Trigger In signal. However, both a user-supplied external trigger and the 34951A Trigger Out cannot drive the line at the same time. Auto-Calibration The 34951A features auto-calibration (auto-cal).
  • Page 12 9). The auto-cal will abort if a signal is detected on ABus1. Before performing an auto calibration, be sure to allow a one-hour warm-up of the DMM and 34951A module. The adjustment is valid for 90 days for temperatures within 5 C of the auto-cal temperature.

  • Page 13: 34951A Scpi Programming Examples

    For complete information on the SCPI commands used to program the 34980A, refer to the Keysight 34980A Programmer’s Reference which can be downloaded from www.keysight.com/find/34980A. Level Mode Example: Outputting a DC voltage level This command sets the output voltage level for the specified DAC channels.
  • Page 14 100, then turn the trace output mode back on. SOURce:FUNCtion:ENABle OFF,(@4001,4002) SOURce:FUNCtion:TRACe:NCYCles 100,(@4001,4002) SOURce:FUNCtion:ENABle ON,(@4001,4002) Example: Deleting a waveform The following command deletes the trace named "TEST_WFORM" from the module in slot 4. TRACe:DELete 4,TEST_WFORM Keysight 34951A User’s Guide...

  • Page 15: External Clock

    DAC channel, you may want to increase the time-out value of your programming application prior to sending this command. The following command performs an auto-cal of a DAC module in slot 5 and returns a pass/fail indication. CALibration:MODule? 5 Keysight 34951A User’s Guide...

  • Page 16: Configuring A Dac Module

    The following command performs an auto-cal of all 34951A DAC modules in a mainframe. CALibration:MODule? ALL Example: Effects of using the secure state command on storing calibration constants The following command removes instrument security, and the calibration constants are stored in non-volatile memory if sent before the CALibration:MODule? command.

  • Page 17: 34951A Simplified Block Diagrams

    34951A Simplified Block Diagrams The following diagram shows how the module is generally configured. 34951A Module User-Supplied Connections Ext Clock Out Ext Trig Out Enable Enable Int Clock Int Trig Ext Clock In/Out Ext Trig In/Out 16 Bits Channel 001...
  • Page 18 <ch#> H (voltage, + current) Data 16 Bits Control Logic 25 mA Thermal Fuse (resettable) Internal Waveform <ch#> L (voltage, - current) Clock Memory Internal <ch#> L Sense (voltage) Trigger Ext Clock In/Out Ext Trig In/Out Keysight 34951A User’s Guide...
  • Page 19 34951A D-Sub Connector Pinout 50-Pin D-Sub Female Connector TRIG Sense Sense Sense Sense Sense Sense Sense Sense GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND Description Socket Description Socket Description Socket...
  • Page 20 34951T Terminal Block Each terminal block is labeled with the model number and the abbreviated module name. In addition, space is available on the label for you to write the slot number. Keysight 34951A User’s Guide...
  • Page 21 DAC calibration clock input clock output wiring log connector pinouts description D-sub pinouts external clock input module description overload fuse pinouts programming examples remote sensing safety notices sense terminals simplified block diagrams synchronization Keysight 34951A User’s Guide...
  • Page 22 THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight 34951A User’s Guide...
  • Page 23 This information is subject to change without notice. Always refer to the Keysight website for the latest revision. © Keysight Technologies 2008-2019 Edition 3, July 1, 2019 Printed in Malaysia *34980-90051* 34980-90051 www.keysight.com...

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