background image

8

|

ni.com

|

NI 9203 Calibration Procedure

Accuracy Under Calibration Conditions

The values in the following table are based on calibrated scaling coefficients, which are stored 

in the onboard EEPROM.

The following accuracy table is valid for calibration under the following conditions:

Ambient temperature 23 °C ±5 °C

NI 9203 installed in slot 8 of an NI cDAQ-9178 chassis

Slots 1 through 7 of the NI cDAQ-9178 chassis are empty

Note

For operational specifications, refer to the most recent 

NI 9203 Operating 

Instructions/User Guide and Specifications

 online at 

ni.com/manuals

.

Worldwide Support and Services

The National Instruments website is your complete resource for technical support. At 

ni.com/

support

 you have access to everything from troubleshooting and application development 

self-help resources to email and phone assistance from NI Application Engineers.

Visit 

ni.com/services

 for NI Factory Installation Services, repairs, extended warranty, and 

other services.

Visit 

ni.com/register

 to register your National Instruments product. Product registration 

facilitates technical support and ensures that you receive important information updates from NI. 

A Declaration of Conformity (DoC) is our claim of compliance with the Council of the European 

Communities using the manufacturer’s declaration of conformity. This system affords the user 

protection for electromagnetic compatibility (EMC) and product safety. You can obtain the DoC 

for your product by visiting 

ni.com/certification

If your product supports calibration, 

you can obtain the calibration certificate for your product at 

ni.com/calibration

.

National Instruments corporate headquarters is located at 11500 North Mopac Expressway, 

Austin, Texas, 78759-3504. National Instruments also has offices located around the world. For 

telephone support in the United States, create your service request at 

ni.com/support

 or dial 

Table 8.  

NI 9203 Accuracy Under Calibration Conditions

Input Range

Percent of Reading

(Gain Error)

Percent of Range*

(Offset Error)

Unipolar

0.080% max

0.019%

 max

Bipolar

0.082% max

0.033% max

*

 

Range equals 21.5 mA for Unipolar and 43 mA (±21.5 mA) for Bipolar.

† 

This specification is lower than the Percent of Range typical specification in the 

NI 9203 

Operating Instructions and Specifications

 because the typical specification shows digits only 

to the hundredth place.

Содержание NI 9203

Страница 1: ...ication 4 Adjustment 5 Gain Accuracy Adjustment 5 Offset Accuracy Adjustment 7 EEPROM Update 7 Re Verification 7 Accuracy Under Calibration Conditions 8 Worldwide Support and Services 8 Software Calibrating the NI 9203 requires the installation of NI DAQmx 9 2 or later on the calibration system You can download NI DAQmx from ni com downloads NI DAQmx supports LabVIEW LabWindows CVI C C C and Visua...

Страница 2: ...uctions and Specifications NI 9203 specific information specifications and calibration interval NI DAQmx Readme Operating system and application software support in NI DAQmx LabVIEW Help LabVIEW programming concepts and reference information about NI DAQmx VIs and functions NI DAQmx C Reference Help Reference information for NI DAQmx C functions and NI DAQmx C properties NI DAQmx NET Help Support ...

Страница 3: ...p time of at least 10 minutes to ensure that the NI 9203 measurement circuitry is at a stable operating temperature Initial Setup Complete the following steps to set up the NI 9203 1 Install NI DAQmx 2 Make sure the NI cDAQ 9178 power source is not connected 3 Install the module in slot 8 of the NI cDAQ 9178 chassis Leave slots 1 through 7 of the NI cDAQ 9178 chassis empty 4 Connect the NI cDAQ 91...

Страница 4: ...e OPR 4 Set the calibrator current to a Test Point value indicated in Table 4 5 Acquire and average samples a Create and configure an AI current channel according to Table 2 b Configure the AI current channel timing according to Table 3 1 Connections when using a calibrator with a guard connection 2 Connections when using a calibrator with no guard connection Table 2 NI 9203 AI Voltage Channel Con...

Страница 5: ...to adjust the gain accuracy performance of the NI 9203 1 Set the calibrator to Standby mode STBY 2 Connect the NI 9203 to the calibrator Refer to Figure 1 for a connection diagram 3 Adjust the NI 9203 a Initialize a calibration session on the NI 9203 The default password is NI b Input the external temperature in degrees Celsius Table 4 NI 9203 Test Limits Input Range Range V Test Point 1 Year Limi...

Страница 6: ... and Bipolar ranges g Set the calibrator to Standby mode STBY h Repeat steps d through g for each calibration voltage in the array i Disconnect the calibrator from the NI 9203 j Close the calibration session 4 Disconnect the NI 9203 from the calibrator 5 Repeat steps 2 through 4 for each channel on the NI 9203 Table 5 Get Adjustment Points Configuration Input Range Range Min Max Unipolar 0 000 0 0...

Страница 7: ...leted the NI 9203 internal calibration memory EEPROM is immediately updated If you do not want to perform an adjustment you can update the calibration date and onboard calibration temperature without making any adjustments by initializing an external calibration setting the C Series calibration temperature and closing the external calibration Re Verification Repeat the Verification section to dete...

Страница 8: ...tes technical support and ensures that you receive important information updates from NI A Declaration of Conformity DoC is our claim of compliance with the Council of the European Communities using the manufacturer s declaration of conformity This system affords the user protection for electromagnetic compatibility EMC and product safety You can obtain the DoC for your product by visiting ni com ...

Страница 9: ...oduct Refer to the Export Compliance Information at ni com legal export compliance for the National Instruments global trade compliance policy and how to obtain relevant HTS codes ECCNs and other import export data NI MAKES NO EXPRESS OR IMPLIED WARRANTIES AS TO THE ACCURACY OF THE INFORMATION CONTAINED HEREIN AND SHALL NOT BE LIABLE FOR ANY ERRORS U S Government Customers The data contained in th...

Отзывы: