Return loss test set

Details Return loss test set Return loss test set

1976-02-09

1977-03-22

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 62, 324DIG1, 1791753R, G01R 2704

Patent

active

040139492

ABSTRACT:
In this test set, each one of a pair of resistive bridges has one node thereof connected to ground, one of the arms of each bridge that is adjacent the one nodes being open. Each one of a pair of ungrounded terminals of a balanced circuit under test is connected to a different one of the ungrounded nodes associated with the open arms of the bridges. Any center ground terminal of the test circuit is connected to the one nodes, which are grounded. Equal amplitude test signals of the same phase are applied to the pair of nodes on the two bridges that are adjacent to the one nodes thereof. A reflected signal coupled from the pair of nodes on the two bridges that are opposite the one nodes thereof is applied to a VTVM which provides an indication of the return loss of the test set, in relation to the individual bridge resistances which are the same values.

REFERENCES:
patent: 2953632 (1960-09-01), Benewicz et al.
patent: 3479587 (1969-11-01), MacKenzie et al.
patent: 3800218 (1974-03-01), Shekel

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