The Astronics / EADS / Talon Instruments SR214 is a 16-channel variable voltage stimulus and response module engineered for precision digital testing in aerospace, defense, and industrial applications. This VXI-compatible I/O module delivers synchronized stimulus generation and real-time response capture across multiple voltage standards, supporting complex test sequences with conditional branching and handshake control. The SR214 integrates into the SR192A Digital Test Module system to scale testing capacity to 192 channels.
## Technical Specifications
**Timing & Data Performance**
• Timing rates to 50 MHz
• Data rates to 25 MHz (50 MHz multiplexed)
• Edge placement resolution: 5 ns
• Channel-to-channel skew: 5 ns
**Electrical Characteristics**
• Voltage levels: TTL, ECL, RS485/422, variable ±15 V or +5/-2 V
• Source/sink current: 50 mA per channel
• 16 stimulus/response channels per module
**Memory & Sequencing**
• Per-channel memory: 128 Kbits (256 Kbits multiplexed)
• Test sequence memory: 128 K
• Five memory architectures: Stimulus, Tristate, Record, Expect, and Mask
• Data formats: Hold, RTZ, RT0, RTC
**Signal Control**
• Single-ended or double-ended logic options
• Parallel and serial bus emulation capability
• Trigger inputs from VXI TTL/ECL buses, front panel auxiliary inputs, or any channel
• Offset sync outputs to test sequence start or step
## Key Features
• High-speed data sequencer controls stimulus/response patterns, UUT handshaking, timing, looping, and conditional testing
• Real-time error capture during test execution
• Conditional and unconditional jump, go-sub test sequence control
• Graphical user interface for accelerated test development
• LSRTAP file import support for rapid pattern data integration
• Digital signal assignment matching to physical channels with operating characteristic definition
## Typical Applications
Aerospace and defense system validation, industrial equipment verification, complex digital bus testing, and multi-channel UUT functional and parametric assessment requiring precise timing correlation and conditional response monitoring.
## Compatibility & Integration
The SR214 mounts as a “C” size VXI module compatible with the SR192A motherboard. The SR192A system accommodates up to 12 I/O modules, enabling configurations of up to 192 total channels. SR214A modules support intermixing within compatible systems.
