The Merlin MVXI1446 (E1446A) is a C-size VXI summing amplifier and digital-to-analog converter module that combines two independent input signals with programmable DC offsets and levels. This 1-slot, register-based module delivers high-power output drive capability—20 Vp-p into 50 Ω loads and 40 Vp-p into high impedance loads—making it suitable for signal conditioning and power amplification in test and measurement systems.
Technical Specifications
• Module Type: C-size, 1-slot VXI module; register-based architecture
• DAC Resolution: 16-bit precision
• Output Drive Capability: 20 Vp-p (50 Ω loads); 40 Vp-p (high impedance loads)
• Signal Inputs: Two independent channels
• Attenuation Control: Pre-amplifier attenuators for individual input level control; switchable 20 dB post-attenuator on power output
• Programming Interface: SCPI (Standard Commands for Programmable Instruments)
– Key Features
• Dual-channel signal summation with independent level control before the summing node
• Precision 16-bit DAC enables programmable DC offsets and output level adjustment
• Switchable post-attenuator reduces combined signal magnitude by 20 dB when engaged
• Dual output drive modes accommodate both matched and high-impedance loads
• Register-based control architecture for deterministic command execution
– Typical Applications
• Multi-signal summation and mixing in analog test systems
• Programmable DC offset and bias supply applications
• High-voltage, high-current signal conditioning for power amplification stages
• Signal level control in automated measurement systems
– Compatibility & Integration
The MVXI1446 operates within VXI (VMEbus Extensions for Instrumentation) systems and supports SCPI command programming. It functions as a standalone power DAC or as a subordinate module to the HP E1445A Arbitrary Function Generator. System control is achieved through the HP E1406A Command Module or the HP E1445A.
