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CALIBRATION PROCEDURE
NI 9775
±10 V, 20 MS/s/ch, 14-Bit, 4-Channel C Series Digitizer Module
This document contains the verification and adjustment procedures for the NI 9775. For more
information on calibration, visit ni.com/calibration.
Software
Calibrating the NI 9775 requires the installation of NI-DAQmx 17.6 or later. You can
download NI-DAQmx from ni.com/downloads. NI-DAQmx supports LabVIEW,
™
™
LabWindows
/CVI
only need to install support for the application software that you intend to use.
Documentation
Consult the following documents for information about the NI 9775, NI-DAQmx, and your
application software. All documents are available on
the software.
•
NI cDAQ-9174/9178 USB Chassis Quick Start
•
NI 9775 Datasheet
•
NI 9775 Getting Started Guide
•
NI-DAQmx Readme
•
LabVIEW Help
•
NI-DAQmx C Reference Help
•
NI-DAQmx .NET Help Support for Visual Studio
Test Equipment
The following table lists the equipment recommended for the performance verification and
adjustment procedures. If the recommended equipment is not available, select a substitute
using the requirements.
, C/C++, C#, and Visual Basic .NET. When you install NI-DAQmx, you
ni.com/manuals
and help files install with
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Summary of Contents for National Instruments NI 9775
- Page 1 CALIBRATION PROCEDURE NI 9775 ±10 V, 20 MS/s/ch, 14-Bit, 4-Channel C Series Digitizer Module This document contains the verification and adjustment procedures for the NI 9775. For more information on calibration, visit ni.com/calibration. Software Calibrating the NI 9775 requires the installation of NI-DAQmx 17.6 or later. You can download NI-DAQmx from ni.com/downloads.
-
Page 2: Test Conditions
The following setup and environmental conditions are required to ensure the NI 9775 meets published specifications. • Keep connections to the NI 9775 as short as possible. Long cables and wires act as antennas, picking up extra noise that can affect measurements. •... - Page 3 Set the calibrator to Operate mode (OPR). Acquire samples from the NI 9775 and extract 50 kHz amplitude information. Create and configure an AI voltage task on the NI 9775 according to the following table. Table 3. NI 9775 AI Task Configuration for AC Accuracy Verification...
- Page 4 Set the calibrator to Standby mode (STBY). Connect the NI 9775 to the calibrator as shown in the AC Accuracy Verification section. Set the calibrator voltage to a Test Point value indicated in the NI 9775 Verification Limits for DC Accuracy table.
- Page 5 Rate Finite Sample 10,000 20 MS/s Configure each test point according to the channel property settings in the following table. Table 9. NI 9775 Channel Properties Configuration for DC Accuracy Verification AI.ADCTimingMode AI.Lowpass Enable High Speed False High Speed True...
- Page 6 Set the calibrator to Standby mode (STBY). Repeat steps 3 through 7 for each test point in the NI 9775 Verification Limits for DC Accuracy table. Repeat steps 3 through 8 for each channel configuration in the NI 9775Channel Properties Configuration for DC Accuracy Verification table.
- Page 7 Complete the following procedure to adjust the DC accuracy performance of the NI 9775. Set the calibrator to Standby mode (STBY). Connect the NI 9775 to the calibrator as shown in the AC Accuracy Verification section. Adjust the NI 9775.
-
Page 8: Eeprom Update
Slots 1 through 7 of the cDAQ-9178 chassis are empty Note The test limits listed in NI 9775 Verification Limits for DC Accuracy table are derived using the values in the following table. Table 14. NI 9775 Accuracy Under Calibration Conditions... -
Page 9: Worldwide Support And Services
United States, visit the Worldwide Offices section of ni.com/ niglobal to access the branch office websites, which provide up-to-date contact information, support phone numbers, email addresses, and current events. NI 9775 Calibration Procedure | © National Instruments | 9... - Page 10 NI trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies. For patents covering NI products/technology, refer to the appropriate location: Help»Patents in your software, the file on your media, or the National Instruments Patent Notice at . You can find patents.txt ni.com/patents...
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