Keysight (Agilent) 1743A Oscilloscope, 100 MHz

The Keysight (Agilent) 1743A is a 100 MHz dual-channel analog oscilloscope engineered for general-purpose testing and troubleshooting across educational and industrial environments. This discontinued instrument delivers reliable waveform measurement and analysis through a straightforward control interface and clear CRT display.

Technical Specifications

• Bandwidth: 100 MHz


• Channels: Dual-channel configuration


• Rise Time: ≤3.5 ns


• Vertical Deflection Factor: 5 mV/div to 20 V/div with 3% accuracy


• Main Time Base: Dual time base capability with sweep speeds to 5 ns/div


• Calibrated Time Base Ranges: 23 settings


• CRT High Voltage: 15 kV


• Signal Delay Line: Included


• Power Requirements: 100/120/220/240 V, 48-440 Hz, 100 VA


• Weight: 20.00 lbs

Key Features

• Dual time base architecture enables simultaneous observation of fast and slow signal components without reconfiguration.


• Integrated signal delay line preserves leading edge detail in fast transient measurements.


• 23 calibrated time base ranges provide measurement flexibility from microsecond to nanosecond scales.


• Vertical resolution spans four decades - 5 mV/div to 20 V/div - accommodating both small-signal and power circuit analysis.


• Universal AC input (100-240 V, 48-440 Hz) supports global deployment.

Typical Applications

• Analog circuit characterization and debugging


• Educational laboratory instruction in analog electronics and measurement techniques


• General-purpose waveform observation and DC parameter verification

Compatibility & Integration Operating and Service Manual (Part Number 01743-90905, May 1978 revision) is available for reference. This product is discontinued and no longer manufactured by Keysight.