Mohr CT100 TDR
Tektronix produced the analog 1502 TDR starting in 1976. In 1986, Dr. Charles Mohr initiated the development of the Tektronix digital version of the 1502 TDR, which became known as the Tektronix 1502B. The Tektronix 1502B, and later the Tektronix 1502C, were widely adopted by commercial and military users and quickly became the industry standard TDRs. Tektronix discontinued production of the 1502 series TDRs about 2007.
MOHR has developed TDR technology for over 30 years. In 2008, MOHR Test and Measurement released the CT100 TDR as the direct replacement for the Tektronix 1502C TDR. The CT100 is a faster, higher resolution TDR with greatly improved storage and analysis features, all in a more compact enclosure.