The TRD-100 is a optical instrument that is designed especially for response time and flicker measurements of flat panel displays such as cell phone and tablet displays, laptop displays, monitors, and LCD TVs.
The TRD-100 uses a PMT based photo detector with microcontroller-based gain control, photopic filter, and collection optics. The TRD-100 provides an analog voltage output that represents the relative luminance of the display under test. The output can be coupled to data acquisition cards or digital oscilloscopes for measuring display flicker, response time, or contrast. The TRD-100 is available in standard and high speed versions with mounting configurations for stand-alone, FPM, or fiber-coupled applications.
The Standard TRD-100A has a 20 kHz signal bandwidth and a unit step response time of ~20 us. This option is recommended for measuring all LCD types with 500 us (or greater) Tr and Tf.
The “Fast” version uses a PMT with an 8 MHz wide bandwidth and a unit step response of response time of 700 ns. This option is for OLED and other fast-switching display technologies.
The Standard objective lens and pinhole aperture form a ~1 cm circular measurement spot fix-focused at a 66 cm (26”) working distance. Use the –STD input optics for most LCD types.
The “Slit Aperture Optics” option uses a horizontal line aperture (slit mask emulation) instead of a circular spot. This allows a single display line to be measured and thus avoids Tr and Tf skew due to oversized spots. This adjustable-focus option is for LCDs with Tr and Tf specs less than 5 ms.
The “Fiber Optic” option uses a SMA-905 standard fiber optic coupler to receive the light signal from a fiber optically coupled (remote) source.
|20 KHz||8 MHz|
|Rise Time||17.5 us||40ns|
|Analog Output Impedance||50 Ohms|
|Spectral Response||Hamamatsu 400K curve|
|Focal Distance||~26″ nominal|
|Aperture||1/8° (Std Lens)|
|Meas Spot Size|
at Focal Dist.
|0.060″ (Std Lens)|
|Supply Voltages||+5 VDC |
+/- 12 VDC