Agilent/Keysight 1651B

The Agilent/Keysight 1651B is a 32-channel logic analyzer engineered for digital circuit debugging, validation, and signal characterization. It delivers simultaneous state and timing analysis with state acquisition at 25 MHz and timing analysis at 100 MHz, supported by 1 Kbit/channel memory depth. The instrument provides versatile triggering including glitch detection across all channels and external arming capability, enabling capture of complex circuit behavior and transient events.

– Technical Specifications

• Channels: 32
• State Analysis Speed: 25 MHz
• Timing Analysis Speed: 100 MHz
• Memory Depth: 1 Kbit/channel
• Analysis Modes: Simultaneous state/state, simultaneous state/timing, transitional timing
• Triggering: Glitch detection on all channels, external arming trigger
• Input Voltage Range: ±10 V about threshold; maximum ±40 V peak
• Minimum Input Voltage Swing: 600 mV peak-to-peak
• Input Threshold Accuracy: ±150 mV (-2.0 V to +2.0 V); ±300 mV (-9.9 V to -2.1 V and +2.1 V to +9.9 V)
• Threshold Range: -9.9 V to +9.9 V in 0.1 V increments
• Setup Time: 20 ns
• Hold Time: 5 ns
• Minimum Input Overdrive: 250 mV or 30% of input amplitude, whichever is greater

– Key Features

• 9-inch white-phosphor CRT display with panel keyboard and RPG knob
• Integrated 3.5-inch disk drive for setup storage and data retrieval
• Lightweight passive probes with woven cable (40-pin connector, 17 signal lines, 17 return lines, 2 power lines, 2 power ground lines)
• Pod-based probe architecture supporting individual threshold definition for pods 1, 2, and 3; shared threshold for pods 4 and 5
• RS-232-C and HP-IB connectivity for external peripherals and controller communication

– Typical Applications

Digital circuit debugging, timing characterization, protocol analysis, and transient event capture in development and production environments.

– Compatibility & Integration

Successor to the HP 1650A Series. Interfaces via RS-232-C and HP-IB for printer hardcopy output and remote instrument control.