The Ametek VM7004-5 is a four-channel programmable resistor module engineered for VXIbus test systems requiring precise resistance simulation, sensor emulation, and calibration functionality. This card delivers independent programmable resistance channels in a compact C-size form factor, with up to three modules stackable in a single slot for 12 total channels. Four-wire connections on each channel eliminate lead resistance effects, while a dedicated four-wire monitor bus enables in-system calibration and self-test routines.
Technical Specifications
Resistance Ranges (VM7004-5 Option)
• 0 Ω to 163,830 Ω
Alternate Options
• Option 6: 0 Ω to 1,638,300 Ω
• Option 7: 0 Ω to 16,383,000 Ω
Standard Individual Channel Range
• 0 Ω to 16,383 Ω
Parallel Configuration Ranges
• Two channels: 0 Ω to 8,192 Ω with 0.5 Ω step size
• Four channels: 0 Ω to 4,096 Ω with 0.25 Ω step size
Series Configuration Ranges
• Two channels: 0 Ω to 32,768 Ω
• Four channels: 0 Ω to 65,536 Ω
Accuracy
• ±0.02% of programmed value ± 0.5 Ω
Electrical
• Maximum power dissipation: 0.5 W at 40°C
• Thermal offset: ≤ ±25 µV
– Key Features
• Four independent programmable resistance channels per module
• Four-wire measurement connections for lead-resistance compensation
• Four-wire monitor bus for calibration and diagnostics
• Software-selectable operating modes: individual, potentiometer, parallel, and series configurations
• Message-based and register-based VXI control
• VXIplug&play driver compatibility
– Typical Applications
• RTD and sensor emulation
• Process control simulation
• Automated test equipment (ATE) calibration
• System self-test and validation
– Compatibility & Integration
The VM7004-5 integrates into VXIbus C-size slots and supports standard VXI control protocols. Driver support via VXIplug&play simplifies deployment into existing test architectures.
