HP / Agilent 54645D 100-MHz 200-MSa/s Mixed Signal Oscilloscope

The HP/Agilent 54645D is a 100 MHz, 200 MSa/s mixed-signal oscilloscope combining 2 analog and 16 digital channels for simultaneous capture and analysis of complex embedded and mixed-signal designs. The instrument delivers 8-bit vertical resolution across both analog and digital domains, supported by deep memory—50,000 points per analog channel and 25,000 points per digital channel—enabling extended waveform capture at full sample rate.

– Technical Specifications

Analog Channels
• Channels: 2
• Bandwidth: 100 MHz
• Vertical Sensitivity: 5 mV/div to 5 V/div
• Vertical Resolution: 8 bits
• DC Accuracy: ±3%
• Input Coupling: AC, DC, Ground
• Input Impedance: 1 MΩ ±2% in parallel with 15 pF ±5 pF

Digital Channels
• Channels: 16
• Resolution: 8 bits
• Input Voltage Range: 0 V to 5.25 V
• Input Impedance: 1 MΩ ±2% in parallel with 15 pF ±5 pF
• Thresholds: Programmable per channel group, 0 to 5 V in 0.1 V increments

Acquisition
• Maximum Sample Rate: 200 MSa/s per analog channel; 200 MSa/s for digital channels when used with analog
• Record Length: 50,000 points per analog channel, 25,000 points per digital channel
• ADC Resolution: 8 bits
• Timebase Range: 5 ns/div to 50 s/div
• Timebase Accuracy: ±25 ppm

Triggering
• Analog Modes: Edge, Pulse Width, Video
• Digital Modes: Pattern, State, Sequence
• Programmable trigger levels

Display & Connectivity
• Color LCD: 320 x 240 pixels
• Waveform Display: Vectors, Dots, Variable Persistence, Intensity Grading
• Interfaces: GPIB, RS-232

Power & Physical
• Input: 100-240 VAC, 50/60 Hz
• Power Consumption: ~150 VA
• Dimensions: 38.7 cm (W) × 15.7 cm (H) × 21.3 cm (D)
• Weight: ~6.5 kg

– Key Features

• 100 MHz analog bandwidth with 8-bit ADC
• 16 digital channels for comprehensive logic analysis
• 50,000-point memory per analog channel enables long captures
• Advanced triggering: edge, pulse width, video, pattern, state, and sequence modes
• Programmable digital thresholds per channel group
• Color display with variable persistence and intensity grading

– Typical Applications

• Embedded systems debugging and validation
• Mixed-signal circuit characterization
• Digital logic timing analysis
• Protocol and timing verification

– Compatibility & Integration

GPIB and RS-232 interfaces enable remote control and automated test system integration.