The ICS Electronics VXI-5535B is a single-slot VXI C-size multifunction module that integrates four independent interfaces—one GPIB, two configurable serial ports, and 64 bits of digital I/O—into a compact instrument control platform. Each interface operates with its own logical address and non-volatile configuration memory, enabling flexible deployment in automated test equipment and industrial control systems without requiring repeated reconfiguration.
## Technical Specifications
**GPIB Interface**
• One dual-mode IEEE-488.2 compliant GPIB interface
**Serial Interfaces**
• Two independent channels, each configurable for RS-232, RS-422, or RS-485
• Programmable baud rates from 50 to 460,800 baud; non-standard rates supported to closest divider value
• Asynchronous operation up to 460,800 baud
• Synchronous data transfer using external clock signals
• Asynchronous and SDLC protocol support (standard)
• Internal termination networks on each channel for RS-422/RS-485 signal biasing
**Digital I/O**
• 64 bits total, configurable as latched outputs or gated inputs
• Logic levels: 3.3 V with 5 V tolerance for mixed-voltage compatibility
• User-selectable 3.3 V or 5 V DC pull-up voltage for switch sensing
**VXIbus and Data Transfer**
• VXI 1.4 and IEEE-488.2 compliant
• Fast Data Channel protocol support; data transfer rates exceed 4 Mbytes per second
• Independent trigger and interrupt programming per interface
**Configuration**
• SCPI command set and ICS short-form commands
• Non-volatile memory stores all interface settings
• Internal processors offload controller overhead
## Key Features
• Four-character LED front panel display for status and diagnostics
• Each interface independently programmable with persistent memory storage
• Mixed-voltage logic support (3.3 V/5 V) for broad system compatibility
• Internal termination eliminates external termination networks on serial lines
## Typical Applications
• Automated test equipment (ATE) systems
• Industrial control and instrumentation
• Multi-protocol data acquisition and command distribution
## Compatibility & Integration
Fully compatible with standard VXI test systems. Operates as a VXI 1.4 instrument with independent logical addressing for each interface, enabling seamless integration into controller-managed instrument racks.
