National Instruments FD-11603 Manuel utilisateur
CALIBRATION PROCEDURE
FD-11603
8-Channel, ±10 V Voltage Input Device for FieldDAQ
This document contains information for calibrating the FD-11603. For more information about
calibration, visit ni.com/calibration.
Contents
Software Requirements............................................................................................................. 1
Documentation.......................................................................................................................... 2
Test Equipment..........................................................................................................................2
Test Conditions..........................................................................................................................3
Calibration Procedure............................................................................................................... 3
Initial Setup....................................................................................................................... 4
Verification........................................................................................................................4
Adjustment........................................................................................................................ 7
EEPROM Update..............................................................................................................8
Reverification....................................................................................................................8
Accuracy Under Calibration Conditions...................................................................................8
Signal Connector Pinout........................................................................................................... 9
Where to Go for Support.........................................................................................................10
Software Requirements
Calibrating the FD-11603 requires the installation of NI-DAQmx on the calibration system. NI
recommends using the latest NI-DAQmx driver. Earliest driver support version for calibrating
the FD-11603 is listed in the following table.
Table 1. FD-11603 Driver Support
Driver Earliest Version Support for Device Calibration
NI-DAQmx 18.5
You can download NI-DAQmx from ni.com/downloads. NI-DAQmx supports many
programming languages, including LabVIEW, LabWindows™/CVI™, C/C++, C#, and Visual
Basic .NET. When you install NI-DAQmx, you only need to install support for the application
software that you intend to use.
Documentation
Consult the following documents for information about the FieldDAQ device and the
NI-DAQmx driver. All documents are available on ni.com/manuals; help files install with the
software.
FD-11603 Quick Start— Provides instructions for installing and configuring your
FieldDAQ device.
FD-11603 User Guide—Provides information about your FieldDAQ device.
FD-11603 Specifications—Provides detailed specifications for your FieldDAQ
device.
NI-DAQmx Readme—Provides operating system and application software support in
NI-DAQmx.
NI-DAQmx Help—Provides information about creating applications that use the
NI-DAQmx driver.
NI-DAQmx C Reference Help—Provides reference information for NI-DAQmx
C functions and NI-DAQmx C properties.
Test Equipment
The following table lists the equipment required for calibrating your FD-11603. If you do not
have the recommended instruments, use the minimum requirements to select substitute
equipment.
2| ni.com | FD-11603 Calibration Procedure
Table 2. Recommended Test Equipment
Equipment Recommended Model Minimum Requirements
Calibrator Fluke 5502A High-precision voltage source with
gain uncertainty of ≤50 ppm and
offset uncertainty of ≤50 μV
SHM125M-Pigtail I/O
Cable (0.3 m, 1 m, 3 m
lengths) (x4)
NI part number
785950-0R3/01/03
—
Banana Plug (optional)
(x2)
— Use banana plugs with an opening
large enough to accommodate four
22 AWG signal wires
Test Conditions
The following setup and environmental conditions are required to ensure the FD-11603 meets
published specifications:
• Keep connections to the device as short as possible. Long cables and wires act as
antennas, picking up extra noise that can affect measurements.
• Verify that all connections to the device are secure.
• Use shielded copper wire for all cable connections to the device. Use twisted-pairs wire
to eliminate noise and thermal offsets.
• Maintain an ambient temperature of 23 ±5 °C. The device temperature will be greater
than the ambient temperature.
• Keep relative humidity below 80%.
• Allow a warm-up time of at least 10 minutes to ensure that the FieldDAQ device
measurement circuitry is at a stable operating temperature.
Calibration Procedure
The calibration process includes the following steps:
1. Initial Setup on page 4
2. Verification on page 4
3. Adjustment on page 7
4. EEPROM Update on page 8
5. Reverification on page 8
FD-11603 Calibration Procedure | © National Instruments | 3
Initial Setup
Complete the following steps to set up the FieldDAQ device.
1. Install the software and NI-DAQmx driver as outlined in the FD-11603 Quick Start.
Note You must install NI-DAQmx 18.5 or later for device calibration support.
2. Set up the FieldDAQ device as outlined in the FD-11603 Quick Start.
3. Configure the FieldDAQ device in Measurement & Automation Explorer (NI MAX) as
outlined in the FD-11603 Quick Start.
4. If the FieldDAQ device is not reserved automatically, select the device and click the
Reserve Network Device button. Refer to Reserving the Device in MAX for more
information.
5. Self-test your device in MAX by expanding Devices and Interfaces»Network Devices,
right-clicking your FieldDAQ device, and selecting Self-Test. Self-test performs a brief
test to determine successful device installation. When the self-test finishes, a message
indicates successful verification or if an error occurred. If an error occurs, refer to ni.com/
support/daqmx.
Reserving the Device in MAX
When the FieldDAQ device is connected to a network, multiple users can access the device.
To perform any DAQ functionality on the device, including reset and self-test, you must
reserve the device in MAX. In MAX, an unreserved device or device reserved by another host
appears with an X and a reserved device appears as dark grey. Only one user at a time can
reserve the FieldDAQ device.
If the device was not reserved automatically after it was added (Add Device), you can reserve
the device in MAX by expanding Devices and Interfaces»Network Devices, selecting the
device, and clicking the Reserve Network Device button. The Override Reservation dialog
box opens when you attempt to explicitly reserve a device. Agreeing to override the
reservation forces the FieldDAQ device to be reserved by the current user.
Verification
Complete the following procedure to determine the As-Found status of the FieldDAQ device.
1. Set the calibrator to Standby mode (STBY).
2. Connect the calibrator to Bank 1 of the FieldDAQ device, as shown in the following
figure. Refer to Signal Connector Pinout for signal connection information.
4| ni.com | FD-11603 Calibration Procedure
Figure 1. Bank 1 Verification Connections
AI 0+
AI 0–
HI
LO
AI 1+
AI 1–
Calibrator
FD-11603
AI 2+
AI 2–
AI 3+
AI 3– Bank 1
2
4
2
4
2
4
2
4
– Tie AI 0+, AI 1+, AI 2+, and AI 3+ together.
– Tie AI 0-, AI 1-, AI 2-, and AI 3- together.
Figure 2. Terminating Four Cables to HI and LO
AI 0
AI 1
AI 2
AI 3
3. Set the calibrator to a reference value determined by the array of recommended
calibration voltages indicated in the following table.
Table 3. FD-11603 Test Limits
Test Point 1-Year Limits
Location Value (V) Lower Limit (V) Upper Limit (V)
Negative Full Scale -10.0 -10.00475 -9.99525
Mid 0.0 -0.00105 0.00105
Positive Full Scale 10.0 9.99525 10.00475
The test limits in this table are derived using the values listed in Accuracy Under Calibration
Conditions.
4. Set the calibrator to Operate mode (OPR).
FD-11603 Calibration Procedure | © National Instruments | 5
5. Acquire and average samples.
a. Create and configure an AI voltage channel on the FieldDAQ device according to
the following table.
Table 4. FD-11603 Accuracy Verification Configuration
Physical Channel Minimum Maximum Scaled Units Channel Configuration
FD11603-Bank1/ai0:3 -10 10 Volts Differential
b. Configure the AI voltage channel timing according to the following table.
Table 5. FD-11603 Voltage Channel Timing Configuration
Sample Mode Samples per Channel Rate (kS/s)
Finite Samples 10240 102.4
c. Start the task.
d. Read the samples.
e. Average the readings.
f. Clear the task.
6. Set the calibrator to Standby mode (STBY).
7. Compare the average to the limits in Table 3.
8. Repeat steps 3 through 7 for each test point.
9. Disconnect the calibrator from the FieldDAQ device.
10. Connect the calibrator to Bank 2 of the FD-11603, as shown in the following figure.
Refer to Signal Connector Pinout for signal connection information.
Figure 3. Bank 2 Verification Connections
AI 0+
AI 0–
HI
LO
AI 1+
AI 1–
Calibrator
FD-11603
AI 2+
AI 2–
AI 3+
AI 3– Bank 2
2
4
2
4
2
4
2
4
– Tie AI 0+, AI 1+, AI 2+, and AI 3+ together.
– Tie AI 0-, AI 1-, AI 2-, and AI 3- together.
11. Complete Steps 3 through 9 for Bank 2 using FD11603-Bank2/ai0:3 as the physical
channel.
6| ni.com | FD-11603 Calibration Procedure
Adjustment
Complete the following procedure to adjust the voltage accuracy of the FieldDAQ device.
1. Set the calibrator to Standby mode (STBY).
2. Connect the calibrator to Bank 1 of the FieldDAQ device, as shown in the following
figure. Refer to Signal Connector Pinout for signal connection information.
Figure 4. Bank 1 Adjustment Connections
AI 0+
AI 0–
HI
LO
AI 1+
AI 1–
Calibrator
FD-11603
AI 2+
AI 2–
AI 3+
AI 3– Bank 1
2
4
2
4
2
4
2
4
– Tie AI 0+, AI 1+, AI 2+, and AI 3+ together.
– Tie AI 0-, AI 1-, AI 2-, and AI 3- together.
3. Initialize a calibration session on the FieldDAQ device. The default password is NI.
4. Adjust the FieldDAQ device voltage.
a. Input the external temperature in degrees Celsius using the Set Temperature
FieldDAQ function.
b. Call the Get FD-11603 Calibration Adjustment Points function.
c. Set the calibrator to a reference value determined by the array of adjustment points.
d. Set the calibrator to Operate mode (OPR).
e. Call and configure the Adjust FD-11603 Calibration function according to the
following table.
Table 6. Adjustment Configuration
Physical Channel Reference Value
FD11603-Bank1/ai0:3 A reference value from the array of adjustment points
f. Set the calibrator to Standby mode (STBY).
g. Repeat steps d through f for each calibration voltage in the array.
5. Disconnect the calibrator from the FieldDAQ device.
6. Connect the calibrator to Bank 2 of the FD-11603, as shown in the following figure.
Refer to Signal Connector Pinout for signal connection information.
FD-11603 Calibration Procedure | © National Instruments | 7
Figure 5. Bank 2 Adjustment Connections
AI 0+
AI 0–
HI
LO
AI 1+
AI 1–
Calibrator
FD-11603
AI 2+
AI 2–
AI 3+
AI 3– Bank 2
2
4
2
4
2
4
2
4
– Tie AI 0+, AI 1+, AI 2+, and AI 3+ together.
– Tie AI 0-, AI 1-, AI 2-, and AI 3- together.
7. Without closing the Bank 1 session, complete Steps 3 through 5 for Bank 2 using
FD11603-Bank2/ai0:3 as the physical channel.
8. Close and commit both calibration sessions.
EEPROM Update
When an adjustment procedure is completed, the FieldDAQ device 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:
1. Call the DAQmx Initialize External Calibration function to start a calibration session on
the FieldDAQ device. The default password is NI.
2. Call the DAQmx Set Temperature FieldDAQ Calibration function to input the external
temperature in degrees Celsius.
3. Call the DAQmx Close External Calibration function to end the session. Set the Action
input to Commit.
Reverification
Repeat Verification to determine the As-Left status of the device.
Note If any test fails reverification after performing an adjustment, verify that you
have met all the conditions listed in Test Conditions before returning your device to
NI. Refer to Where to Go for Support for assistance in returning the device to NI.
Accuracy Under Calibration Conditions
The values in the following table are based on calibrated scaling coefficients, which are stored
in the onboard EEPROM.
8| ni.com | FD-11603 Calibration Procedure
The following accuracy table is valid for calibration under the following conditions:
• Ambient temperature 23 °C ± 5 °C
• No nodes share power with the FieldDAQ device under calibration
The test limits listed in Table 3 are derived using the values in the following table.
Table 7. FD-11603 Voltage Accuracy Under Calibration Conditions
Percent of Reading (Gain Error) Percent of Range (Offset)
±0.037% ±1.05 mV
Note Values in this table are intended for calibration verification only. These
values only apply under the specific calibration conditions described in this
document, and are not to be construed as general operational specifications of the
FD-11603. For operational specifications, refer to the most recent FD-11603
Specifications at ni.com/manuals.
Signal Connector Pinout
Figure 6. FD-11603 Pinout
AI–NC
NCAI+
NC
2
3
4
5
1
Table 8. Signal Descriptions
Pin Number Wire Color* Signal Description
1
3
5
Brown
Blue
Gray
NC No connect. Do not connect signals to
this terminal.
2 White AI- Negative analog input voltage signal
4 Black AI+ Positive analog input voltage signal
* Wire color pertains to SHM125M I/O cables sold through NI. Other manufacturers' cable
wire colors may vary.
FD-11603 Calibration Procedure | © National Instruments | 9
Where to Go for Support
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.
National Instruments corporate headquarters is located at 11500 North Mopac Expressway,
Austin, Texas, 78759-3504. National Instruments also has offices located around the world to
help address your support needs. For telephone support in the United States, create your
service request at ni.com/support and follow the calling instructions or dial 512 795 8248. For
telephone support outside the 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.
Information is subject to change without notice. Refer to the NI Trademarks and Logo Guidelines at ni.com/trademarks for
information on 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 patents.txt file on your media, or the National Instruments Patent Notice at ni.com/patents. You can find
information about end-user license agreements (EULAs) and third-party legal notices in the readme file for your NI product. Refer
to the Export Compliance Information at ni.com/legal/export-compliance for the NI 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 this manual was developed at private expense and is subject to the applicable
limited rights and restricted data rights as set forth in FAR 52.227-14, DFAR 252.227-7014, and DFAR 252.227-7015.
© 2019 National Instruments. All rights reserved.
377493A-01 October 1, 2019
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