The J7000B from Noisecom are Jitter Noise Generators that operate from 10 MHz to 60 GHz. It generates additive white Gaussian noise (AWGN) with a large crest factor to model “real world” random jitter. This noise generator is capable of outputting this random noise (Rj) and allows designers to add Rj directly to a data stream to evaluate the performance of the device and measure the results with tools such as an oscilloscope or bit error rate tester (BERT). By adding precise amounts of white noise, the reduction in Signal to Noise Ratio (SNR) can be measured to evaluate the receiver’s performance. It supports noise attenuation from 0 to 63 dB in 0.1 dB steps (up to 2 GHz) and has an ultra-low distortion signal path.
The J7000B is ideal for qualifying and quantifying single-ended or differential serial devices. For devices with multiple signal paths as with PAM-4, this noise generator be configured to handle multiple differential signal inputs and outputs with individual control of each pair of signals. It can be used in receiver sensitivity tests and for injecting noise onto a PC test board to characterize how the device under test can handle cross talk that can be radiated on PC board runs. It is suitable for today’s high-speed digital circuit designers who are challenged with narrow jitter tolerances to deliver high data rates with low bit error rates (BER). The instrument has up to five optional band-limiting filters that can be added for specific serial data testing requirements or methodologies.
This noise generator features a large 7-inch touch-screen display for easy setup and operation. The noise level, noise ON/OFF switching, signal ON/OFF switching and noise source selection can be controlled quickly with the touch screen, or remotely via Ethernet, as well as through the optional GPIB. The J7000B can be easily integrated into an automated test station under software control to reduce production test time. It is available in a rackmount/benchtop enclosure that measures 17.22 x 6.30 x 19.50 inches with SMA-female connectors.
