Sampling network analyzer with stored correction of gain errors

Details Sampling network analyzer with stored correction of gain errors Sampling network analyzer with stored correction of gain errors

1981-04-30

1983-11-08

Shaw, Gareth D.

Boots, shoes, and leggings

364481, 364573, G06J 100, G06F 1520

Patent

active

044146388

ABSTRACT:
An improved sampling network analyzer is described, in which a stored memory, for example, a programmable read-only memory (PROM), is utilized to store the discrepancies between various predetermined mid-band voltage gains and their desired, exact values, and to supply this correction information to the sampling network analyzer in order to produce a more accurate amplitude measure of the amplitude of voltages applied to the inputs of the sampling network analyzer. In addition, low- and high-frequency characteristic frequencies can be stored, and correction made for the gain-vs-frequency characteristic of an amplifier or amplifier chain. The correction factors are typically measured in final test of the sampling network analyzer, and programmed into a PROM that is incorporated into the particular sampling network analyzer. In subsequent operation, when the sampling network analyzer invokes a particular voltage gain, the corresponding gain correction factor is read out and utilized, by the instrument, to produce a more accurate representation of input voltage amplitude.

REFERENCES:
patent: 3790910 (1974-02-01), McCormack
patent: 4031630 (1977-06-01), Fowler
patent: 4064396 (1977-12-01), Panarello
patent: 4091543 (1978-05-01), Lapeyre
patent: 4149120 (1979-04-01), Richter
patent: 4200933 (1980-04-01), Nickel et al.

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