Astronics / EADS / Talon Instruments SR192A 50MHz Digital Module

The SR192A is a double-wide VXI digital test module delivering 50 MHz data rates with 5 ns edge placement resolution for high-speed digital pattern generation and analysis. Scalable from 8 to 192 single-ended channels in 8-channel increments, it accommodates up to 12 internal 16-channel I/O modules and two SR101A timing modules per unit. The integrated high-speed data sequencer provides precise control over test patterns, UUT handshaking, timing, format, looping, and conditional testing across TTL, RS-485, ECL, LVDS, and variable voltage logic levels.

Technical Specifications

Data Rate: Up to 50 MHz

Edge Placement Resolution: 5 ns

Channel-to-Channel Skew: 5 ns

Maximum I/O Channels: Up to 192 single-ended per module

Configurable Range: 8 to 192 channels in 8-channel increments

Internal Module Capacity: Up to 12 modules × 16 channels each

Timing Module Support: Up to two SR101A modules per SR192A

Memory Depth: 128 Kbits per channel (256 Kbits in multiplexed mode)

Data Formats: Hold, RTZ, RT0, RTC

Output Drive: 50 mA source/sink

Input Thresholds: High 2.0 V, Low 0.8 V

Input Impedance: >10 kΩ

Output Impedance: 50 Ω

Short Circuit Protection: Yes

Key Features

Five-memory architecture: Stimulus, Tristate, Record, Expect, Mask

Multiple SR192A modules synchronize for up to 1,152 total I/O channels

Supports TTL, RS-485, ECL, LVDS, and variable voltage I/O

Trigger inputs from VXI TTL bus, VXI ECL bus, front-panel auxiliary, or any channel

Graphical user interface accelerates test development

LSRTAP file import capability

Visual timing and table definition tools

Typical Applications

Parallel and serial digital signal testing

Complex UUT handshaking sequences

High-speed pattern generation and capture

Mixed-logic-level test environments

Compatibility & Integration Double-wide VXI module form factor. Integrates with SR101A timing modules for synchronized multi-module configurations supporting logic standards across industrial and defense test platforms.