NI PXIe-4844 Installation Guide and Specifications
6
ni.com
Cleaning Sensors
To clean the optical sensors, use a ferrule cleaner or follow the standard guidelines:
1.
Fold a lint-free wipe into a compress.
2.
Moisten the compress with isopropyl alcohol.
3.
Remove the protective cover from the sensor connector.
4.
Press the connector endface firmly to the moistened section of the compress, then forcefully wipe
the connector with a twisting motion toward the edge of the compress, finishing in a clean, dry
section of the compress. Do not reuse dirty sections of the compress.
5.
Discard the used compress.
Calibration
The NI PXIe-4844 has continuous on-board calibration using epoxy-free Telcordia-qualified optical
referencing components and continuous on-board NIST traceable wavelength reference components to
ensure that sensor wavelength measurements remain within specifications over the life of the product.
Using the NI-OSI Explorer and LabVIEW VIs
The NI-OSI driver software installs the NI-OSI Explorer and the NI-OSI LabVIEW VIs. Use the NI-OSI
Explorer to identify and configure the optical sensors connected to the NI PXIe-4844. Use the Optical
Measurement VIs in LabVIEW to perform optical sensing measurements. To get started:
1.
Select
Start»All Programs»National Instruments»NI-OSI Explorer»NI-OSI Explorer
.
2.
Read the
Welcome
dialog. Follow the links provided for more information on configuring sensors
and performing measurements.
Specifications
The following specifications are typical for the NI PXIe-4844 operating at 25
°
C unless otherwise noted.
Bus Interface
Form factor.............................................................x4 PXI Express, v1.0 compliant
Laser
Type........................................................................Fiber laser
Class.......................................................................1
Output power (continuous wave)
Min................................................................. 0.06 mW
Max ................................................................ 0.25 mW
Beam diameter .......................................................9 mm (0.35 in.)
Numerical aperture ................................................0.1
Optical Input
Number of channels ...............................................4
Wavelength range...................................................1510 nm to 1590 nm
Sample rate ............................................................10 Hz ± 0.1 Hz
Optical dynamic range ...........................................40 dB
