Curtiss-Wright / Systran SCRAMNet CTRSTDF Media Card

The Curtiss-Wright/Systran SCRAMNet CTRSTDF Media Card is a high-performance fiber-optic and coaxial communication interface for deterministic, low-latency data sharing in real-time networked systems. This standard fiber-optic media access card enables rapid inter-node communication with transport delays as low as 250 nSec per node, supporting network bandwidths up to 16.7 MB/sec. Available in passive PMC, expanded, and direct-attached P2 form factors, the CTRSTDF maintains chassis shielding while providing external media connectivity for simulation, industrial control, and data acquisition applications.

## Technical Specifications

**Data Transfer Performance**
• Maximum data throughput: 16.7 MB/sec (SCRAMNet+ series); 210+ MB/sec (SCRAMNet GT200)
• Node latency: 250 nSec – 800 nSec (4-byte packets); 250 nSec – 1.5 µSec (16-byte packets) for SCRAMNet+ series
• Network bandwidth: 6.5 MB/sec to 12 MB/sec depending on packet size
• Per-node transport delay: 250 nSec

**Media and Connectivity**
• Transmission media: Coaxial (paired conductor) or fiber optic (62.5 µm core multimode)
• Coaxial maximum node separation: 30 meters with SMA connectors
• Standard fiber maximum node separation: 300 meters with ST connectors
• Long-link fiber maximum separation: Up to 3500 meters (SCRAMNet+); up to 10 km (SCRAMNet GT200 with singlemode transceivers at 1300 nm)
• SCRAMNet GT200 transceiver support: Industry-standard SFP modules (850 nm multimode for 300 m; 1300 nm singlemode for 10 km)

**Memory Configuration**
• Shared-memory options: 4 KB, 128 KB, 512 KB, 1 MB, 2 MB, 4 MB, 8 MB
• SCRAMNet GT200 memory: 128 MB

**Environmental**
• Operating temperature: 0°C to 40°C

## Key Features

• Passive PMC, expanded, and direct-attached P2 configurations
• Coaxial and fiber-optic connectivity with external media access
• Conduction-cooled variants available for SCRAMNet GT200
• Cabinet relocation kits for optimal fiber routing and status monitoring

## Typical Applications

Real-time simulation, deterministic industrial control systems, synchronized multi-node data acquisition, and low-latency distributed computing environments.

## Compatibility & Integration

Supports VME, EISA, ISA, and PCI architectures with legacy OS compatibility including VxWorks®, LynxOS™, Windows 95, and UNIX variants (HP-UX, IRIX, Digital UNIX).