Optical Bench: The document describes a symmetrical Czerny-Turner design with a 75 mm focal length, known as the VRS bench, covering a wavelength range of 190 - 1100 nm.
Stray Light: The stray light is specified between 0.1 - 1%, with a typical value of less than 0.3% for a 300 l/mm grating with a blaze at 300 nm.
Detector: Two types of CMOS linear arrays are mentioned: the HAM S11639 with 2048 pixels (14x200 µm) and the HAM S13496 with 4096 pixels (7x200 µm).
Signal/Noise Ratio: The signal-to-noise ratio is 375:1 for the Varius 2K and 365:1 for the Varius 4K.
Dynamic Range and Dark Noise: The dynamic range is 4500, and the dark noise is 15 counts.
AD Converter: A 16-bit, 6 MHz AD converter is used.
Integration Time: The integration time ranges from 9 µs to 30 seconds.
Interface: The device supports USB 3.0 high speed (5Gbps) and Gigabit Ethernet (1 Gbps).
Sample and Data Transfer Speed: On-board averaging sample speed is 0.38 ms/scan for Varius 2K and 0.70 ms/scan for Varius 4K. Data transfer speed is 0.38 ms/scan via USB3.0 and 1.0 ms via Ethernet for Varius 2K, and 0.70 ms/scan via USB3.0 and 1.31 ms via Ethernet for Varius 4K.
Digital I/O: Features include an HD-26
connector with 2 analog inputs, 2 analog outputs, 13 digital bidirectional ports, trigger, sync, strobe, and laser capabilities.
Dimensions and Weight: The device measures 183 x 130 x 45.2 mm and weighs 1068 grams. Note that dimensions for the Varius OEM variant differ.
Power Supply: The default power supply is USB3 power at 500 mA or 12 VDC at 300 mA.
Temperature Range: The operational temperature range is 5-55 °C.