HP / Agilent 54645A 2-Channel 100 MHz Deep Memory and MegaZoom Oscilloscope

The HP/Agilent 54645A is a 2-channel, 100 MHz digital oscilloscope engineered for deep memory capture and high-resolution waveform analysis. MegaZoom technology enables intuitive pan-and-zoom navigation through deep captured waveforms, allowing engineers to isolate subtle signal details and transient events. With 1 MB memory per channel, 200 MSa/s sampling, and 8-bit vertical resolution, the instrument delivers the acquisition depth and speed necessary for complex signal characterization. Advanced triggering—including glitch detection, TV sync support, and noise-reject coupling—combined with selectable input impedance (1 MΩ or 50Ω) and ±400 V maximum input rating, supports diverse measurement scenarios. The responsive front panel and high-speed display update rate (3 million points/second) minimize dead time, making it suitable for demanding production and field applications.

– Technical Specifications

• Bandwidth: 100 MHz
• Channels: 2
• Maximum Real-Time Sampling Rate: 200 MSa/s
• Memory Depth: 1 MB per channel
• Vertical Resolution: 8 bits (7 bits on <2 mV/div to 1 mV/div settings)
• Horizontal Resolution: 100 ps
• Sweep Speed: 2 ns/div to 5 s/div
• Vertical Sensitivity: 1 mV/div to 5 V/div
• Vertical Accuracy: ±1.2% of full scale, ±0.5% of position value (single cursor); ±0.4% of full scale (dual cursor)
• Horizontal Accuracy: ±0.01%
• Input Impedance: 1 MΩ (≈9 pF) or 50Ω selectable
• Input Coupling: AC, DC, Ground
• Maximum Input Voltage: 400 V (DC + peak AC)
• Trigger Sensitivity: <50 mV (DC to 25 MHz); <100 mV (DC to 100 MHz)
• Peak Detect: 5 ns
• Display Update Rate: Up to 3 million points/second
• Power: 100–240 VAC, 45–440 Hz, 220 VA maximum
• Dimensions: 35.258 × 17.272 × 31.75 cm (excluding handle)
• Weight: 6.35 kg (14 lbs)

– Key Features

• MegaZoom deep-memory exploration with responsive time/division knob control
• Multiple trigger modes: Auto, Autolevel, Normal, Single, Glitch Trigger
• Trigger coupling options: AC, DC, LF Reject, HF Reject, Noise Reject
• Adjustable trigger holdoff: 200 ns to ≈13 s
• TV triggering support (composite sync, NTSC/PAL/PAL-M/SECAM/generic formats via Option 005)
• Pre-trigger delay ≥10 div; post-trigger delay ≥2,560 div or 50 ms
• Auto-store with half-bright previous sweeps and full-bright current sweep display
• External trigger input: ±18 V, 1 MΩ input impedance, 400 V maximum

– Typical Applications

Signal characterization, troubleshooting of transient events, video/composite signal analysis, and precision waveform measurements requiring extended memory and detailed zoom capability.

– Compatibility & Integration

Optional interface modules available: HP 54650A GPIB interface, HP 54652B RS-232 and parallel interface, HP 54657A GPIB measurement/storage module, and HP 54659B RS-232 interface.