The Keysight/Agilent/HP E1415A is a VXIbus Algorithmic Closed-Loop Controller that executes complex real-time control algorithms on a dedicated onboard Digital Signal Processor. This C-size, single-slot module eliminates dependency on host computer processing for primary control functions, delivering deterministic response times essential for precision closed-loop applications. It bridges standard PID control and fully custom algorithm implementations, supporting up to 32 independent control loops with user-defined logic written in ANSI C subset programming.
## Technical Specifications
• **Module Type:** VXIbus Algorithmic Closed-Loop Controller, C-size, 1-slot
• **Processing:** Digital Signal Processor (DSP) for real-time algorithm execution
• **Control Loops:** Up to 32 independent closed-loop algorithms
• **Algorithm Language:** ANSI C subset with user-defined functions
• **I/O Channels:** 64 configurable channels in 8-channel groups
• **Supported I/O Types:** Analog Input, Analog Output, Digital I/O
• **Signal Conditioning Plug-on Cards (SCPs):** Up to 8 optional SCP slots for specialized I/O
• **Update Rate:** Up to 2.5 kHz; achievable up to 1000 Hz per loop for simple PID calculations with 8 loops
• **SCP Example:** E1502A 8-Channel Low-Pass Filter SCP—7 Hz cutoff with over-voltage protection and open transducer detection; self-calibrated on demand
## Key Features
• Deterministic timing with no drift or jitter in integral and derivative calculations
• Input measurement, calculation, and output completion between scan triggers
• Built-in PID algorithms; user-specified control algorithms supported
• Up to 32 user-defined functions per module
• Transcendental and non-linear functions via piece-wise linear interpolated lookup tables for optimized execution speed
• Self-calibrating analog input and output SCPs
• Minimal host computer interaction required for operation
## Data Acquisition & Control Logic
High-speed multi-channel capture of analog, digital, and frequency-based signals within a single module. Algorithms execute closed-loop control by acquiring input data, performing real-time calculations, and generating output commands with deterministic latency.
## Compatibility & Integration
Designed for VXIbus backplane systems. Optional Signal Conditioning Plug-on Cards extend I/O capabilities and provide signal conditioning for specialized measurement and control applications.
