Frequency gain display apparatus for L/C band frequency up unit

Details Frequency gain display apparatus for L/C band frequency up unit Frequency gain display apparatus for L/C band frequency up unit

1998-02-06

1999-09-07

Wambach, Margaret R.

Electrical pulse counters, pulse dividers, or shift registers: c

Systems

Using particular code or particular counting sequence

377 28, 377109, 327 47, 327 48, 327113, 327117, 327119, 327179, H03K 2100

Patent

active

059498412

ABSTRACT:
A frequency gain display apparatus for an L/C band frequency up unit which is capable of generating a pulse for adjusting the gain of an L/C band frequency up unit used in a satellite system and a pulse for selecting a band width of a SAW (surface acoustic wave) filter and is capable of displaying a gain step of the same. The apparatus includes a gain setting unit for setting an up/down state of the frequency gain, a monostable oscillator for oscillating a positive pulse in a frequency gain up/down state, first and second error prevention units for inverting positive pulses from the monostable oscillators and preventing a counting error of a decimal counter, with the decimal counter counting negative pulses from the first and second error prevention units and outputting a BCD code corresponding to the frequency gain, decoders for converting the BCD code from the decimal counter into a signal for displaying the frequency gain, and a display unit for receiving driving signals from the decoders and displaying a frequency gain up/down step in response thereto.

REFERENCES:
patent: 4379271 (1983-04-01), Lehmann
patent: 5802463 (1998-09-01), Zuckerman

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