N4951B 17/32 Gb/s Pattern Generator Remote Head with 5 Tap De-Emphasis
Catálogos
Description
The new Keysight Technologies, Inc. N4951B pattern generator de-emphasis options add integrated 5-tap de-emphasis (1 pre-cursor, 3 post cursors) to the pattern generator remote head operating up to 32 Gb/s. The new de-emphasis options are available in 17 Gb/s and 32 Gb/s versions. The de-emphasis head provides designers with the signal pre-distortion capability required for transmitter emulation when characterizing receivers, backplanes, and systems.
De-emphasis tap weight computation is incorporated into the N4980A Multi-instrument BERT software. It allows the user to easily calculate tap weights from a frequency response measurement or simulation s-parameters.
Simplify tap weight computation
The N4980A Multi-instrument BERT software includes a powerful de-emphasis tap weight computation tool that simplifies the process of computing tap weights, reducing the time required to a few seconds. Starting from a measured or simulated s-parameter file, the software calculates the minimum tap values necessary to create the ideal compensation filter response. The user can specify which tap configurations to optimize, so different solutions with different combinations of pre- and post-cursors is available. Once the data has been analyzed, the software tool converges on the FIR implementation with the optimal fit, which is displayed along with the target response. A measurement cursor provides the error magnitude between the target and realized filter functions at any frequency the user selects. When the user is satisfied with the results, a single click loads the computed tap weights into the N4951B-D17/-D32 pattern generator head.