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Laser testing meter runs Windows CE
Nov. 20, 2007

Newport Corp., a supplier of laser and photonics components, has introduced an optical power and energy meter that's based on Windows CE. The 842-PE is a handheld device that can test a wide variety of pulsed or continuous wave lasers, according to the company.

In power testing mode, the 842-PE tests the beam power of continuous wave lasers. In energy testing mode, it can test the energy in a single pulse of a pulse laser. The device is adaptable to different lasers via external detectors, which connect to the unit via its DB15 input connector, according to the company.


The 842 PE's graphical user interface
(Click to enlarge)
Newport adds that the 842-PE is compatible with the company's 818P thermopile detector, 818E pyroelectric, or 918D photodiode detectors. The device can also interface with 818 series low power detectors via a 841-DIN adapter.

According to the company, the 842-PE performs on par with desktop power and energy meters, but can be operated via rechargeable batteries. It can also be connected to a PC via USB or RS-232.

Newport says Windows CE makes the meter easy to use via a menu-driven interface (shown at right). A selection of displays includes real time value, tuning needle, line plot or rolling average value, and a complete statistical package with flexible data sampling parameters.


The Newport 842-PE
(Click to enlarge)

Functional features touted by Newport for the 842-PE include:
  • Measurement repetition rates up to 6 KHz
  • Energy measurements in the range, 0.7 uJ - 20 kJ
  • Power measurements in the range, 5 pW - 10 kW
  • Large 3.5-inch "super bright" backlit LCD display
  • Fast anticipation algorithm for power detectors, with less than 5 percent overshoot for all 818P heads
  • True measurement of RMS, PTP stability, rep rate, and number of pulses with energy detectors
  • Stores up to 275,000 data points, using both flash and RAM
  • USB interface software includes Labview drivers, serial commands
  • Single-shot energy measurement for both 818E and 818P detectors, peak power, and fluence display in J/cm2 or W/cm2
  • "Lowest noise level for all type of detectors"
The company does not specific the processor or RAM complement for the 842-PE. However, additional cited specifications are as follows:
  • Display -- 3.8-inch LCD
  • I/O:
    • USB
    • RS-232
    • mono audio 1/8-inch jack
  • Battery life -- 11 hrs without backlight; 6 hrs with backlight
  • Operating temperature -- 10 to 40 deg. C
  • Weight -- 1.2 lbs (0.6 kg)
  • Dimensions -- 8.3 x 4.8 x 1.7 inches (210 x 122 x 43 mm)
The 842-PE is available now, according to Newport. It's priced at $1425, not including detectors. The 841-DIN adapter is priced around $120.



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