Agilent/Keysight 54621D

The Agilent/Keysight 54621D is a 60 MHz mixed-signal oscilloscope combining analog and digital measurement capabilities in a single instrument. It provides 2 analog channels and 16 digital channels for simultaneous acquisition of up to 18 signals, making it ideal for debugging mixed analog/digital circuits and microcontroller-based designs.

– Technical Specifications

Bandwidth & Sampling
• Analog bandwidth: 60 MHz
• Maximum sample rate: 400 MSa/s
• Memory depth: 2 MB per channel
• Vertical resolution: 8 bits (12 bits in high-resolution mode when ≥200 µs/div in average mode)

Analog Channels (2)
• Sensitivity: 1 mV/div to 5 V/div
• Input impedance: 1 MΩ ±1%
• Input capacitance: ~14 pF
• Offset range: ±5 V (ranges 40 dB (DC–20 MHz), >30 dB (20 MHz–60 MHz)
• Input coupling: AC, DC, Ground
• Bandwidth limit: ~20 MHz selectable
• Shipped with 10074C 10:1 probes

Digital Channels (16)
• Logic levels: TTL, CMOS, ECL, or user-definable
• User-defined threshold range: ±8.0 V in 10 mV increments

Triggering System
• Edge, pulse width, pattern, glitch, TV, sequence, duration, and protocol-based triggering
• Protocol support: I²C, SPI, LIN, CAN, USB, and user-defined serial frames
• TV trigger: NTSC, PAL, PAL-M, SECAM; field and line selectable; 0.5 div sensitivity
• Trigger sources: 2 analog channels, external (1 MΩ ±3%)
• Analog trigger level range: ±6 div

– Key Features

• Single-instrument analysis of analog signals and digital logic states
• Auto probe sense compatible with Agilent/HP and Tektronix probes
• Protocol-specific triggering simplifies debugging of I²C, SPI, CAN, LIN, and USB designs
• User-definable logic thresholds accommodate diverse digital signal families

– Typical Applications

• Microcontroller firmware development and validation
• Mixed analog/digital circuit debug
• Serial protocol analysis (I²C, SPI, CAN, LIN, USB)
• Composite video signal verification

– Compatibility & Integration

Auto probe identification supports standard Agilent/HP and Tektronix probe accessories. External triggering input accepts standard trigger signals at 1 MΩ impedance.