390AD
The Tektronix 390AD is a digitizer with a 15 MHz bandwidth and a GPIB interface. It can digitize two channels at up to 30 megasamples oer second or one channel at up to 60 megasamples per second. It has 10 bits of voltage resolution. Dynamic accuracy is 8.5 bits up to 1 MHz and 7.5 bits up to 10 MHz. The memory is 4096 samples, which can be used for digitizing a single waveform or for two waveforms at 2048 samples each. The 390AD has a "Rate Switching" feature where it starts an acquisition at one sample rate, and then switches to a second sample rate. The 390AD can be set to trigger from either of the two vertical signals or from an external trigger signal. The signals acquired on a 390AD can be exported via GPIB or displayed on an external CRT in X-Y mode.