Tektronix VX4790A

The Tektronix VX4790A is a VXIbus Arbitrary Waveform Generator Module that creates user-defined waveforms for sophisticated testing and simulation applications. It generates complex analog output signals with up to 262,144 voltage samples at rates up to 25 MHz, supporting both internal and external clock sources. The module integrates into VXIbus mainframes and operates under GPIB controller command, enabling engineers to develop precise, repeatable test stimuli for validating electronic system performance in demanding environments.

– Technical Specifications

• Waveform generation: up to 262,144 voltage samples
• Sample rate: up to 25 MHz (internal or external clock)
• Frequency range: 0.75 Hz to 25 MHz
• Amplitude resolution: 12 bits
• Output voltage ranges: ±10.22 V (5 mV resolution), ±5.11 V (2.5 mV resolution), ±0.1 V (50 microvolt resolution)
• Output impedance: 50 ohms
• Programmable waveform repetition: continuous or 1 to 255 cycles
• Low-pass filter options: 5 MHz, 500 kHz, 50 kHz (software-selectable)
• Firmware revision: 2.3
• VXI revision: 1.3
• Board revision: 01-B

– Key Features

• On-board programmable attenuator for output voltage reduction
• Internal memory storage for sine, square, sawtooth, and triangular waveforms
• Frequency and amplitude adjustment without re-sending waveform data to system controller
• Programmable breakpoints at any non-consecutive voltage sample
• Output value programmable as percentage of full scale
• SMB connectors for Inputs and Outputs 1-6

– Typical Applications

Complex signal generation for validation testing, analog circuit characterization, transducer simulation, and performance verification of electronic systems requiring precise, user-defined stimuli.

– Compatibility & Integration

Designed for VXIbus mainframes conforming to VXIbus specification. Control via GPIB system controller and associated software. Printed circuit board assembly form factor.