How Do I Configure the DAQ Channel Wizard with 5B45 and 5B46 Modules?
Primary Software: Driver Software>>NI-DAQ
Primary Software Version: 6.5.2
Primary Software Fixed Version: N/A
Secondary Software: N/A
Hardware: Signal Conditioning Other>>5B Series>>5B45
Problem: How do I configure virtual channels in Measurement & Automation Explorer(MAX) to acquire frequencies from 5B45 and 5B46 signal conditioning modules?
Solution: The 5B45 and 5B46 modules are single-channel isolated frequency input modules that produce a 0 V to +5 V output proportional to input frequency. The 5B45 module accepts full-scale inputs ranging from 0 to 10 KHz. The 5B46 accepts full-scale inputs ranging from 0 to 250 KHz. Both modules also allow the user to set the threshold to either 0 V (for zero crossing signals) or +1.4 V (for positive level signals), and set the hysteresis to either ±25 mV or ±400 mV. You can set the 5B45 and 5B46 modules to read frequency input through the Channel Wizard by following these steps:
- Open Measurement & Automation Explorer
- Under Devices & Interfaces, ensure your DAQ board is functioning properly by going to the test panel for it. Help can be found by going to the DAQ Configuration Wizard.
- Right-click on Data Neighborhood and select Create New from the pop-up menu.
- In the Create New... dialog window, select Virtual Channel. Click Finish.
- In the Create New Channel window, select Analog Input. Click Next.
- In the Enter Channel Name and Description dialog window, enter the Channel Name and Description. Click Next.
- From the Channel Wizard dialog Window, select Voltage measurement. Click Next.
- Type KHz as the unit and enter the input range, found on the module, as your measurement range (e.g. 0 to 10 KHz for the 5B45 module) .
- The next screen will prompt you for scaling method and module output. Because 5B modules automatically map input values to output values linearly, choose the Map Ranges option from the list. Enter the output range listed on the table from the side of your module. The output range of both modules is 0 V to 5 V. Click Next.
- The next screen will ask you for information about your DAQ hardware. Choose your DAQ board from the list and choose the channel to which the module is connected. In most cases, this channel will correspond directly to the 5B backplane slot where the 5B module is installed. Select the type of input mode you will be using for that channel. Your Data Acquisition board should always be configured in Non-Referenced Single Ended (NRSE) mode for use with 5B Series backplanes. If you are using a board that does not function in NRSE mode, configure it to Referenced Single Ended (RSE) mode and configure your 5B backplane accordingly.
NOTE: Depending on the type of DAQ board you are using, you may not be able to change the input mode from within the Channel Wizard. If this is the case, cancel the Virtual Channel configuration. Go back to Devices and Interfaces (NI-DAQ Configuration Utility), select the DAQ board, used for this measurement, and configure it for the proper input mode. You may have to shut down the system and reconfigure jumpers located on your board.
- Click the Finish button to complete the channel setup. You will be taken back to the Measurement & Automation window. Under Data Neighborhood, you will see the Virtual Channel you just configured. You can double-click on the channel name to verify all the information entered. Right-click on the channel and select Test; you should see the appropriate frequency values in KHz displayed in a graph format. If this is not the case, it might be that you either selected the wrong input or output voltage range. In this case, you can right-click the Virtual Channel and select Properties. There, you can make all the necessary changes and test the Virtual Channel again.
Related Links: Hardware Installation/Configuration Troubleshooter
5B Frequency Input Modules' Catalog
5B Series User Manual
Attachments:
Report Date: 08/12/1999
Last Updated: 05/13/2004
Document ID: 1OBA11MG
