FIELD: instrumentation.
SUBSTANCE: invention relates to instrumentation, and namely to measuring devices of amplitude characteristics. Oscillographic measuring device of amplitude characteristics of electric signals consists of an oscillograph 1, the first and the second reference voltage sources 2 and 3, the first switch 4, a voltage difference meter 5, the first and the second smoothly adjustable delay lines 6 and 7, the second switch 8, a zone level formation unit 9, a zone pulse generator 10, a voltage equality indicator 11, a control unit 12, the first coupling capacitor 13, the third and the fourth reference voltage sources 14 and 15, the third switch 16, an additional voltage difference meter 17, an additional coupling capacitor 18, the first and the second coupling resistors 19 and 20, the fifth and the sixth reference voltage sources 21 and 22, the fourth switch 23, the third voltage difference meter 24, the third coupling capacitor 25, the third coupling resistor 26, the seventh and the eighth reference voltage sources 27 and 28, the fifth switch 29, the fourth voltage difference meter 30, the fourth coupling capacitor 31, the fourth coupling resistor 32, the fifth coupling resistor 33 and sixth coupling resistor 34. The device ensures Rx measurement according to two-cascade option, at that cascades out of different segments are used, as well as possibility to measure Rx according the four-cascade option; when two-cascade meters interacting under modes of mutual compensation of the undesirable effects of the reference voltage sources at the input terminals of the meter. The ratios ensuring the mutual compensation conditions are determined.
EFFECT: increased accuracy and authenticity of the amplitude measurements.
1 tbl, 5 dwg
