Keysight 53210A/010/201 RF Frequency Counter: 350 MHz, OCXO Timebase, Rear Inputs, 53200 Series
Keysight 53210A/010 RF Frequency Counter: 350 MHz, OCXO Timebase, 10 Dig/s, 1 Channel, 53200 Series
Keysight 53230A Universal Counter Timer: 350 MHz, 12-digit resolution, 20 ps time interval accuracy, LAN/USB/GPIB connectivity, OCXO timebase for precision frequency and time measurements.
Keysight 53230A/010 Universal Frequency Counter Timer: 350 MHz, OCXO Timebase, 20 ps, 53200 Series