At 04:30 PM 11/12/98 -0000, you wrote: >Hi Tom. >You mean it is possible to detect some millivolts at the output of the >receiver caused by the modulation of the IR LED? Wouldn't you detect noise >fluctuations too thinking it would be a pulse? But the noise probably doesn't occur regularly with the same frequency at which you are modulating the transmitter. Andy ================================================================== Andy Kunz - Statistical Research, Inc. - Westfield, New Jersey USA ==================================================================