SU485553A1 - A device for measuring the differential amplification of an anologic to digital converter - Google Patents

Description

(54) DEVICE FOR MEASURING DIFFERENTIAL AMPLIFICATION OF ANALOG - DIGITAL CONVERTER

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The second input of the first additional combining device is connected to the output of the first shaper 2. The last two devices form the shaper of the vertical sweep 7, the output of which, 5th by the output of the first additional unifying device 6, is connected to the first input of the indicator 8. -

Combinations 5 are connected to the output of a sinusoidal voltage generator 9,

and the output of combining unit 5 is connected to the input of the analog-digital conversion of the body 10, the output of which is connected to the second through switch 11; the input of the Iporo of the auxiliary device 12, the first input of which is connected to the output of the second step voltage generator 3, the output of the device 12 is simultaneously the output of the horizontal scan driver 13, which forms this combination device 12 together with the step voltage former 3. This output is connected with the second input of the indicator 8.

The device works as follows.

Sawtooth voltage from generator 4 and sinusoidal voltage from generator 9 is input to the combiner 5. Generator 4 is synchronized by pulses from generator 1. Analog-to-digital converter 10 is supplied to the input of saw-hole voltage with a sinusoidal nozzle, not synchronized with the frequency saws, from the combining device 5. The pulses from the discharge output, determined by the switch 11 of the 1O converter, are fed to the combining device 12, to the second input of which signals from the driver voltage step 3, controlled by clock signal generator 1. The output of shaper 13 receives scan 10rizontalnoy

С and the input of the indicator 8 (the input of the channel of the horizontal deflection of the oscillograph). The signal from the output of the generator is fed to the input of the combinator 6, to another input of which the signal comes from the step voltage driver 2,

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controlled by clock pulses from generator 1. The signal from the output of the vertical imaging driver 7 is fed to the input of indicator 8 (the input of the vertical deflection channel of the oscilloscope). The signal at the output of any bit of the analog-to-digital converter 10 is the envelope of packets of code pulses with blurred edges, with the width of the blur area proportional to the amplitude of the sine of the distal tip at the corresponding point of the dynamic range. The mutual position of the edges of the dimension: 1 determines the change in the differential gain by

HYNAMIC RANGE.

; Subject invention

 A device for measuring di4x () an alternate amplification of an analog-digital converter containing a clock generator, an analog digital converter, a sawtooth generator, a sinusoidal voltage generator, a combining device, an indicator and a switch, and the output of the clock generator through a sawtooth voltage generator is connected to the first input of the combiner, the second input of which is connected to the generator output sinusoidal voltage, and the output to the analog digital input A converter whose output is connected to the input of a switch, characterized in that in order to increase the measurement accuracy, two additional devices combining w and two stepped voltage drivers NIN are introduced, and the inputs of both stepped voltage drivers are connected to the output of the clock pulse generator , A step voltage generator is connected to the first input of the first auxiliary combining device, the second input of which is connected to the output of the sawtooth voltage jpaTOpa, and the output I to the first input of the indicator, the second input of which is connected to the output of the second additional combining device, the first input which is connected to the output of the second step voltage driver and the second to the output of the switch.

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