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National Instruments NI 6738 Скачать руководство пользователя страница 7

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NI 6738/6739 Calibration Procedure

•

Maintain an ambient temperature of 23 °C ±5 °C. The device temperature will be greater
than the ambient temperature.

•

Keep relative humidity below 80%.

Device Setup

1.

Configure the hardware using Measurement & Automation Explorer (MAX).

2.

Launch the Calibration Executive procedure and complete the setup wizard. For
information, refer to

ni.com/r/loadcalpro

3.

Complete the following steps to create fixtures that will be used to connect the switches to
the DMM.

Create the NI PXI/PXIe-2529 Fixture

1.

On the TB-2636, connect the positive (+) and negative (-) terminals together for C0–C31.

2.

Connect all + terminals together for R0 to R3, and wire them out using two separate wires
to banana connectors labeled

DMM HI

and

DMM HI Sense

.

3.

Connect all - terminals together for R0 to R3, and wire them out using two separate wires
to banana connectors labeled

DMM LO

and

DMM LO Sense

.

To run the procedure, connect the TB-2636 to the PXI/PXIe-2529 switch, and connect the four
banana connectors to the appropriate terminals on the DMM.

Test Limit Equations

These switch tests are not intended to be a validation of the full warranted performance of these
devices. The parameters and limits used in these tests are based on the measurement
requirements of this procedure.

Test Conditions

Follow these guidelines to optimize the connections and the environment during calibration.

•

Keep connections to the device as short as possible. Long cables and wires can act as
antennae, which could pick up extra noise that would affect measurements.

•

Verify that all connections to the NI 6738/6739 are secure.

•

Use shielded copper wire for all cable connections to the device. Use twisted-pair wire to
eliminate noise and thermal offsets.

•

Maintain an ambient temperature of 23 °C ±5 °C throughout the

Analog Output

procedure. The device temperature is greater than the ambient temperature.

Refer to the

Calibration Procedure

section for more information about calibration

temperatures and temperature drift.

Table 4.

NI PXI-PXIe-2529 Test Limits

Thermal EMF

Path Resistance

Relay Count

±9



V

<1



For all relays (0–127), <100,000 for each

«
...
5
6
7
8
9
...
»

Содержание NI 6738

Страница 1: ...PXIe 6738...

Страница 2: ...tial Setup 7 Self Calibration 8 Checking Device Temperature Changes 8 Verification 9 Analog Output Verification 9 Counter Verification 22 Adjustment 24 EEPROM Update 25 Reverification 25 Test Limits 2...

Страница 3: ...bout your NI 6738 6739 device Your 673x Device Specifications The specifications document for your DAQ device provides detailed specifications including the device calibration interval NI DAQmx Readme...

Страница 4: ...installed in a shielded enclosure with properly designed and shielded input output ports Table 1 Recommended Equipment Equipment Recommended Models Where Used Requirements DMM NI 4070 AnalogOutput Ve...

Страница 5: ...Ie 2529 as a 4x32 2 wire matrix Notice Before using this unshielded accessory determine if the documentation for the connected device requires shielded cables or accessories Do not use this product un...

Страница 6: ...actors including how often the switches are used Test Conditions The following setup and environmental conditions are required to ensure the NI PXI PXIe 2529 meets published specifications Keep connec...

Страница 7: ...h and connect the four banana connectors to the appropriate terminals on the DMM Test Limit Equations These switch tests are not intended to be a validation of the full warranted performance of these...

Страница 8: ...ration memory EEPROM is immediately updated If you do not want to perform an adjustment you can update the calibration date without making any adjustments 5 Reverification Perform another verification...

Страница 9: ...ce temperature within 1 C of the last self calibration temperature throughout the verification process the calibration limits for the devices that support self calibration are not valid In order to su...

Страница 10: ...The NI 6738 has 32 analog outputs AO 0 31 The NI 6739 has 64 analog outputs AO 0 63 Note Table 7 NI 6738 6739 Analog Output Values is based upon the most recent edition of the specifications document...

Страница 11: ...ector 0 AO 10 pin 51 Connector 0 AO GND 8 9 10 pin 50 AO 11 Connector 0 AO 11 pin 52 Connector 0 AO GND 11 pin 18 AO 12 Connector 0 AO 12 pin 53 Connector 0 AO GND 12 13 pin 20 AO 13 Connector 0 AO 13...

Страница 12: ...GND 36 37 pin 14 AO 37 Connector 1 AO 37 pin 47 Connector 1 AO GND 36 37 pin 14 AO 38 Connector 1 AO 38 pin 48 Connector 1 AO GND 38 39 pin 49 AO 39 Connector 1 AO 39 pin 15 Connector 1 AO GND 38 39...

Страница 13: ...59 Connector 1 AO 59 pin 31 Connector 1 AO GND 58 59 pin 65 AO 60 Connector 1 AO 60 pin 32 Connector 1 AO GND 60 61 pin 33 AO 61 Connector 1 AO 61 pin 66 Connector 1 AO GND 60 61 pin 33 AO 62 Connect...

Страница 14: ...O 4 pin 13 c4 N A AO 4 Connector 0 AO GND 4 5 pin 41 c5 N A AO 5 Connector 0 AO 5 pin 47 c5 N A AO 5 Connector 0 AO GND 4 5 pin 41 c6 N A AO 6 Connector 0 AO 6 pin 48 c6 N A AO 6 Connector 0 AO GND 6...

Страница 15: ...8 c12 N A AO 12 Connector 0 AO 12 pin 53 c12 N A AO 12 Connector 0 AO GND 12 13 pin 20 c13 N A AO 13 Connector 0 AO 13 pin 54 c13 N A AO 13 Connector 0 AO GND 12 13 pin 20 c14 N A AO 14 Connector 0 AO...

Страница 16: ...9 pin 25 c19 N A AO 19 Connector 0 AO GND 18 19 pin 59 c20 N A AO 20 Connector 0 AO 20 pin 26 c20 N A AO 20 Connector 0 AO GND 20 21 pin 27 c21 N A AO 21 Connector 0 AO 21 pin 60 c21 N A AO 21 Connect...

Страница 17: ...in 65 c27 N A AO 27 Connector 0 AO 27 pin 31 c27 N A AO 27 Connector 0 AO GND 26 27 pin 65 c28 N A AO 28 Connector 0 AO 28 pin 32 c28 N A AO 28 Connector 0 AO GND 28 29 pin 33 c29 N A AO 29 Connector...

Страница 18: ...34 pin 45 N A c2 AO 34 Connector 1 AO GND 34 35 pin 46 N A c3 AO 35 Connector 1 AO 35 pin 12 N A c3 AO 35 Connector 1 AO GND 34 35 pin 46 N A c4 AO 36 Connector 1 AO 36 pin 13 N A c4 AO 36 Connector...

Страница 19: ...n 50 N A c10 AO 42 Connector 1 AO 42 pin 51 N A c10 AO 42 Connector 1 AO GND 40 41 42 pin 50 N A c11 AO 43 Connector 1 AO 43 pin 52 N A c11 AO 43 Connector 1 AO GND 43 pin 18 N A c12 AO 44 Connector 1...

Страница 20: ...9 pin 57 N A c17 AO 49 Connector 1 AO GND 48 49 pin 24 N A c18 AO 50 Connector 1 AO 50 pin 58 N A c18 AO 50 Connector 1 AO GND 50 51 pin 59 N A c19 AO 51 Connector 1 AO 51 pin 25 N A c19 AO 51 Connect...

Страница 21: ...in 30 N A c25 AO 57 Connector 1 AO 57 pin 63 N A c25 AO 57 Connector 1 AO GND 56 57 pin 30 N A c26 AO 58 Connector 1 AO 58 pin 64 N A c26 AO 58 Connector 1 AO GND 58 59 pin 65 N A c27 AO 59 Connector...

Страница 22: ...O 61 Connector 1 AO 61 pin 66 N A c29 AO 61 Connector 1 AO GND 60 61 pin 33 N A c30 AO 62 Connector 1 AO 62 pin 67 N A c30 AO 62 Connector 1 AO GND 62 63 pin 68 N A c31 AO 63 Connector 1 AO 63 pin 34...

Страница 23: ...have been tested 9 Call DAQmxClearTask with the following parameter taskHandle taskHandle 10 Disconnect the DMM from AO 0 and reconnect it to AO 1 making the connections shown in Table 5 Analog Outpu...

Страница 24: ...dle taskHandle sampleMode DAQmx_Val_ContSamps sampsPerChan 10000 5 Call DAQmxStartTask with the following parameter taskHandle taskHandle The DAQ device generates a 5 MHz square wave 6 Configure the e...

Страница 25: ...e DMM to AO 0 as shown in Table 5 Analog Output Connections Note If you are using the NI 4070 ensure that it is set to the 10 V range 2 Call DAQmxCreateAOVoltageChan with the following parameters task...

Страница 26: ...are written to the EEPROM 10 Disconnect the DMM from the device EEPROM Update When an adjustment procedure is completed the NI 6738 6739 internal calibration memory EEPROM is immediately updated If y...

Страница 27: ...t for your device Table 7 NI 6738 6739 Analog Output Values Range V Test Point 24 Hour Limits 2 Year Limits Minimum Maximum Location Value V Lower Limit V Upper Limit V Lower Limit V Upper Limit V 10...

Страница 28: ...d 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 World...

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