Electronic telemetering calibrator

Claim 1

In an electronic instrument adapted to calibrate both (a) a transmitter mechanism producing from a variable parameter a periodic electric pulse signal with a variable duration representing the magnitude of said parameter, and (b) a receiver mechanism producing from said variable duration electric pulse signal when transmitted over a communication link an indication of the magnitude of said parameter on a predetermined calibrated scale, the combination comprising a source of periodic timing pulses at a frequency substantially greater than the periodic rate of said pulse signals, a resettable counter adapted to count said timing pulses, an indicator displaying the count in said counter, and control circuit means connected for operating said counter for transmitter and receiver calibration in the two respective operating modes of selectively (1) gating sAid timing pulses into the counter in response to each said periodic pulse signal produced by said transmitting mechanism and deriving from the count of the timing pulses in said counter on said indicator a display in terms matching said calibrated scale representative of the duration of the variable duration of the electric pulse signal produced by the transmitter mechanism, and (2) establishing for a plurality of predetermined check points on said calibrated scale respective cycles of a predetermined number of counts in said counter from said timing pulses and converting said cycles to a pulse signal output of duration corresponding to the predetermined number of counts therein for operation of said receiver mechanism.