1A6
Type 1A6 is a low-cost differential plug-in for 500-series scopes. A replacement for Type D, it senses down to 1mV/div at 2MHz bandwidth, with 10,000-to-1 common-mode rejection.
Type 1A6 was introduced in 1967 or 1968, and was dropped after 1973. Not as many units were sold as the more sensitive Type 1A7 or the faster Type 1A5.
