The 1654B is a Logic Analyzer, 64 Channel, 35 MHz state.

Performance Characteristics
• Form Factor Benchtop
• Number of Channels 64 ch
• Maximum Conventional Timing Rate 100 MHz
• Maximum Transitional Timing Rate 100 MHz
• Maximum Glitch Timing Rate 50 MHz
• Memory Depth/Channel-Normal 1.024 KB
• Channel to Channel Delay 4 ns
• Minimum Recognizable Glitch Width 5 ns
• Setup/Hold Time 10 ns
• Maximum Trigger Sequence Levels 8 Levels
• No of Pattern Recognizers 8 QTY
• No of Range Recognizers 8 QTY
• Input Impedance 100 kOhm
• Input Capacitance 8 pF
  Measurements/Features
• 4 clock inputs
• State compare mode
• Software Designers
• Soft/Hardware Integrators
• Glitch capture on all channels
• Marker pattern search & stats
• Time marker measurements
  Programmability/Connectivity
• User Interface Proprietary
• Ports to Peripheral Devices HPIB,RS232C
• Data Storage Type FDD
  Life Cycle Data
• Out of Production Mar-01-1994
• Out of Support Sep-01-1999
  Compliance
• CE Compliance Not on file
• UL Compliance Not compliant
  Power Requirements
• Input Power Universal (Auto Sense and Switch)