High-speed 16-bit digitiser card has 125MHz bandwidth
16 June 2009
The new Razor family of high-speed, high-performance digitiser cards from GaGe Applied are available in the UK from exclusive distributor, TTi Instrument Distribution. The new multi-channel 16-bit digitisers feature up to four channels, 100 or 200 MS/s maximum sampling per channel, up to 2 GS of on-board memory, and 65 or 125 MHz bandwidth.
With its 16-bit nominal resolution, the Razor provides extremely high signal fidelity with an effective number of bits (ENOB) of 12. The ENOB is the universally accepted measure of a digitiser’s combined noise and distortion performance. The Razor also provides an ultra-low total harmonic distortion (THD) of less than -80 dB.
In many applications, low distortion is far more important than low noise, since noise may often be reduced through signal-processing techniques such as signal averaging or filtering. By contrast, there is absolutely no way of removing signal distortion, so that the ultra-low distortion introduced by the Razor provides a huge benefit. In addition, ENOB performance is optimised on the 100 MS/s and 200 MS/s Razor models through the use of separate ADC chips on each model. No other high-speed digitiser provides such high ENOB performance alongside high channel density and flexible input conditioning.
The Razor includes a high-voltage input of ±50 V, making it ideal for interacting with the 42 V batteries soon to be introduced by emerging technologies in the military, aerospace and automotive industries. The ±50 V input range is the highest input range available in a digitiser on the market today, and is more typical of oscilloscope inputs than digitisers.
The Razor also provides an automatic high-voltage trip feature that protects the card against damage for voltages of up to ±75 V on most input ranges. The GaGe automatic calibration mechanism provides 0.5% DC accuracy on all Razor input ranges.
True master/slave multi-card synchronisation allows up to eight cards to be simultaneously sampled in a single chassis. A master/slave Razor system automatically performs an on-board timing calibration that ensures simultaneous sampling on all channels within 200 ps.
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