Agilent / Keysight U1604B Handheld Oscilloscopes, 40 MHz, 2 Analog Channels

The Agilent/Keysight U1604B is a portable handheld oscilloscope that integrates dual-channel waveform capture, true RMS digital multimetry, and real-time data logging into a single field-service instrument. Built for electronic troubleshooting and general-purpose testing, it delivers 40 MHz bandwidth with real-time sampling to 200 MSa/s and equivalent-time sampling to 2.5 GSa/s. The 4.5-inch color LCD (320 × 240) provides clear waveform visualization across all operating modes.

Technical Specifications

• Bandwidth: 40 MHz


• Analog Channels: 2


• Real-Time Sampling Rate: Up to 200 MSa/s


• Equivalent-Time Sampling Rate: 2.5 GSa/s


• Vertical Resolution: 8-bit


• Memory Record Length: 125 kpts


• Input Impedance: 1 MΩ/20 pF


• Input Coupling: AC, DC, GND


• Rise Time: 8.8 ns


• Vertical Sensitivity: 5 mV/div to 100 V/div


• Time Base: 10 ns to 50 s/div


• Trigger Modes: Automatic, Normal, Single


• Trigger Source: CH1, CH2


• Waveform Math: Dual Waveform Math (DWM) with addition and subtraction operations


• FFT: Rectangular, Hamming, Hanning, Blackman-Harris, Flattop windowing


• Operation Modes: X-Y, ROLL, MAIN Digital Multimeter


• Resolution: 6000-count


• Measurement Type: True RMS


• Auto-range: Yes


• Measurements: Voltage (DC, AC, True RMS AC+DC), Resistance, Capacitance, Diode Test, Continuity Test, Temperature, Current Data Logger


• Real-time recording and data consolidation for waveform plotting Display & Connectivity


• 4.5-inch LCD Color Display, 320 × 240 resolution


• USB 2.0 Full Speed Client for PC connectivity


• USB 2.0 Full Speed Host for external storage (Option 001)


• Firmware upgrade via USB Power & Operating Environment


• Power Adapter: 100–240 VAC input, 50/60 Hz; 12 VDC output


• Battery: 7.2 V, 4500 mAh Ni-MH rechargeable


• Battery Life: 4 hours (operating); 5 hours (charging time)


• Operating Temperature: 0 °C to 50 °C


• Non-Operating Temperature: –20 °C to 70 °C


• Operating Humidity: Up to 80% RH at 40 °C


• Maximum Altitude: 2000 m (full accuracy)


• ESD Tolerance: ±4 kV Physical & Compliance


• Dimensions: 24.1 cm (H) × 13.8 cm (W) × 6.6 cm (D)


• Weight: 1.5 kg


• Safety: IEC 61010-1:2001, EN61010-1:2001, CSA C22.2 No. 61010-1:2004, UL 61010-1:2004


• Pollution Degree: 2


• Indoor use only

Key Features

• Dual-channel oscilloscope with true RMS multimeter and data logger in one unit


• 8.8 ns rise time captures fast transients reliably


• Advanced FFT with five windowing options for frequency-domain analysis


• Waveform math (addition, subtraction) enables differential measurements


• 4-hour battery autonomy for extended field deployment


• Multi-lingual Quick Help menus

Typical Applications

• Field service and maintenance diagnostics


• Electronic circuit troubleshooting and debug


• Power supply and signal integrity measurements


• Frequency analysis and harmonic content assessment


• Temperature and current monitoring with data archival

Compatibility & Integration USB 2.0 Full Speed connectivity enables real-time waveform capture to PC and firmware updates. External USB storage (Option 001) supports long-duration logging and data export. Ni-MH battery pack (U1571A) provides hot-swap capability for continuous field operation.