The SR101 Timing Set Module is a precision timing generator engineered for the SR192 Digital Test Module system. It orchestrates I/O module stimulus/response operations and bus emulation by generating accurate timing signals and memory address/control signals. Each SR101 controls up to six I/O modules and operates at timing rates to 50 MHz with data rates to 25 MHz (50 MHz multiplexed). The module installs directly in the SR192 motherboard—a 2-slot “C” size VXI module—and supports one or two SR101 modules per motherboard.
## Technical Specifications
• **Timing Rates:** Up to 50 MHz
• **Data Rates:** 25 MHz standard; 50 MHz multiplexed option
• **Memory Architecture:** 5-memory design (Stimulus, Tristate, Record, Expect, Mask)
• **Memory Depth:** 128K bits per channel; 256K bits multiplexed
• **Test Sequence Memory:** 128K
• **I/O Module Control Capacity:** Up to 6 modules per SR101
• **Logic Standard:** TTL voltage levels
• **Source/Sink Capability:** 50 mA
• **Clock Resolution:** DC to 50 MHz (TS CLOCK signal determines minimum cell resolution)
• **Clock Source:** Internal or external; SR210 Accessory Module provides programmable source (100 Hz to 50 MHz)
## Key Features
• Dual timing module support per SR192 motherboard for enhanced sequencing capability
• Advanced sequencing via SR192 Development Environment software
• Control signal generation to Unit Under Test with UUT signal testing capability
• TTL-level I/O with 50 mA source/sink per channel
• Compatible with SR115 bi-directional 16-channel I/O modules
## Typical Applications
• Digital stimulus/response testing
• Bus emulation and protocol validation
• Synchronized multi-module test sequences
• High-speed logic signal generation and capture
## Compatibility & Integration
The SR101 integrates into VXI bus architecture via the SR192 motherboard, which accommodates up to 12 I/O modules, two timing modules, and one D/A module per chassis. The SR210 Accessory Module supplies programmable clock sources ranging from 100 Hz to 50 MHz for both internal timing and external device synchronization.
