Agilent / Keysight E1426A 500 MHz, 4-Channel VXI Oscilloscope

The Agilent/Keysight E1426A is a 500 MHz, 4-channel VXI digitizing oscilloscope module engineered for high-performance signal acquisition in modular test systems. Using random repetitive sampling (equivalent-time sampling), it achieves 500 MHz bandwidth and 20 ps timebase resolution for repetitive signals, with single-shot capability limited to 2 MHz and two simultaneous channels. The module delivers 8-bit vertical resolution, upgradeable to 10-bit via averaging, with programmable sensitivities from 8 mV to 40 V full scale. It supports advanced logic triggering including glitch, edge, pattern, time-qualified, state, and trigger-after-delay modes, plus TV triggering for video applications. The C-size, 2-slot VXI component features 64 KB shared memory, dual input impedance (1 MΩ or 50 Ω), AC/DC coupling, and nineteen automatic pulse parameter measurements. Both SCPI and HP 54503A-compatible command sets enable flexible system integration.

– Technical Specifications

• Bandwidth (Repetitive): DC to 500 MHz (-3 dB)
• Bandwidth (Single-Shot): DC to 2 MHz (-3 dB)
• Sampling Rate: Up to 20 MSa/s
• Channels: 4
• Vertical Resolution: 8-bit A/D; 10-bit with averaging
• Sensitivity Range: 8 mV to 40 V full scale
• Vertical Gain Accuracy (DC): ±1.25% of full scale
• Input Impedance: 1 MΩ or 50 Ω (selectable)
• Input Capacitance: 7 pF nominal
• Input Coupling: AC, DC
• Maximum Input Voltage: ±250 V (1 MΩ); 5 Vrms (50 Ω)
• Offset Accuracy: ±(0.5% of channel offset + 2% of voltage range)
• Offset Range: ±250 V
• Timebase Range: 2 ns to 50 s full scale
• Timebase Resolution: 20 ps
• Delta-t Accuracy (Repetitive): ±(0.2% × timebase range + 0.005% × delta-t + 150 ps)
• Minimum Trigger Pulse Width: 1.5 ns
• Waveform Record Length: Up to 1,024 points (repetitive, multiple triggers); 500 points (20 µs or slower, single trigger)
• Shared Memory: 64 KB

– Key Features

• Random repetitive sampling for low-duty-cycle signal capture
• Simultaneous two-channel single-shot acquisition (channels 1 and 4)
• Advanced logic triggering: glitch, edge, pattern, time-qualified, state, trigger-after-delay
• TV trigger with line and field selection
• Nineteen automatic pulse parameter measurements per IEEE definition
• VXI backplane ECL triggering
• Dual command set support (SCPI and HP 54503A-compatible)

– Compatibility & Integration

Message-based VXI module. C-size, 2-slot configuration.