The HP/Agilent 54621D is a mixed-signal oscilloscope that simultaneously captures and analyzes two analog channels and 16 digital timing channels, ideal for debugging complex microcontroller and embedded system designs. Its 60 MHz bandwidth analog front-end pairs with protocol-aware triggering for I²C, SPI, LIN, CAN, and USB to isolate signal anomalies in real time. With up to 18 channels displayed concurrently, engineers observe cross-domain signal interactions without switching between instruments.
– Technical Specifications
Analog Channels
• Bandwidth: 60 MHz
• Sample rate: 200 MSa/s per channel (400 MSa/s maximum)
• Memory depth: 4 MB per channel; 2 MB/channel standard with MegaZoom deep memory
• Vertical resolution: 8 bits standard; 12 bits in high-resolution mode
• Vertical sensitivity: 1 mV/div (magnified from 2 mV/div)
• Peak detection: 5 ns
Digital Channels
• Channel count: 16 timing channels
• Threshold modes: TTL, CMOS, ECL, user-definable (±8.0 V in 10 mV increments)
• Maximum input voltage: ±40 V peak CAT I
• Input dynamic range: ±10 V about threshold
• Minimum input swing: 500 mV peak-to-peak
• Input impedance: 100 kΩ ±2%
• Channel-to-channel skew: 2 ns typical, 3 ns maximum
• Input capacitance: ~8 pF
– Key Features
• Patented high-definition display with superior horizontal resolution and 32 intensity levels
• 25 million vectors per second acquisition rate
• Protocol triggering: I²C, SPI, LIN, CAN, USB (N2758A CAN module optional)
• Up to 18 concurrent channel display for complex signal correlation
– Typical Applications
• Microcontroller firmware validation and hardware-software integration debugging
• Mixed-signal board-level diagnostics in automotive, industrial, and consumer electronics
• Protocol analysis in communication bus designs
– Compatibility & Integration
Connectivity via built-in floppy, RS-232, and parallel ports. Optional GPIB interface module available for automated test system integration.
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