Agilent / Keysight DSOX4034A Oscilloscope: 350 MHz, 4 Analog Channels

The Keysight DSOX4034A is a 350 MHz, 4-analog channel digital storage oscilloscope built for signal analysis and waveform capture on the benchtop. It delivers real-time bandwidth across all channels, a 1 million waveforms per second update rate, and MegaZoom IV memory technology for extended acquisitions. The 12.1-inch capacitive touch display provides intuitive operation, while Zone touch triggering enables rapid signal isolation.

Maximum sample rates reach 5 GSa/s (single channel) and 2.5 GSa/s (all channels) with 4 Mpts standard memory. The instrument accepts input sensitivities from 1 mV/div to 5 V/div across both 1 MΩ and 50 Ω impedances, with 8-bit vertical resolution (12 bits with averaging). DC vertical gain accuracy is ±2.0% full scale; offset accuracy is ±0.1 div ±2 mV ±1% of offset setting.

Channel isolation exceeds 40 dB DC to maximum bandwidth. A selectable 20 MHz hardware bandwidth limit is available. The DSOX4034A integrates oscilloscope, logic analyzer, digital voltmeter, and optional serial protocol analyzer and arbitrary function generator functionality.

It operates from 100–240 V AC mains and measures 275 mm (W) × 156 mm (H) × 454 mm (D), weighing 25 lbs. The instrument is fully upgradable, including bandwidth expansion to 1.5 GHz, supporting both analog and optional 16 digital channels.

Technical Specifications

• Bandwidth: 350 MHz (all channels)


• Rise Time (10–90%): ≤ 1 ns


• Waveform Update Rate: > 1,000,000 waveforms/sec


• Sample Rate: 5 GSa/s (half channel); 2.5 GSa/s (all channels)


• Memory Depth: 4 Mpts standard; segmented memory architecture


• Analog Channels: 4


• Digital Channels: 16 (MSO models or via upgrade)


• Display: 12.1-inch capacitive touch, TFT LCD, high-definition


• Input Sensitivity: 1 mV/div to 5 V/div (1 MΩ and 50 Ω)


• Vertical Resolution: 8 bits (12 bits with averaging)


• DC Gain Accuracy: ±2.0% full scale


• DC Offset Accuracy: ±0.1 div ±2 mV ±1% of offset setting


• Channel Isolation: ≥ 40 dB DC to max bandwidth


• Input Coupling: AC, DC


• Hardware Bandwidth Limit: ~20 MHz (selectable)


• Dimensions: 275 mm (W) × 156 mm (H) × 454 mm (D)


• Weight: 25 lbs


• Input Voltage: 100–240 V AC

Key Features

• MegaZoom IV smart memory with segmented capture modes


• InfiniiScan Zone touch triggering for rapid event isolation


• Single-instrument integration: oscilloscope, logic analyzer, DVM, optional WaveGen (20 MHz, dual-channel) and serial protocol analyzer


• Bandwidth upgradeable to 1.5 GHz


• High waveform update rate minimizes blind time in signal observation

Typical Applications

• General-purpose analog signal measurement and debug


• Multi-protocol serial analysis with optional upgrades


• Mixed-signal verification via MSO configuration


• Power supply and switching transient characterization


• Embedded systems development and troubleshooting

Compatibility & Integration The DSOX4034A belongs to the InfiniiVision 4000 X-Series platform, allowing flexible feature expansion without instrument replacement. Optional modules enable logic analysis, serial decoding, and arbitrary waveform generation without occupying additional bench space.