The Diamond Systems Ruby-MM-812-XT is a PC/104 analog output module delivering 8 channels of 12-bit D/A conversion paired with 24 CMOS/TTL-compatible digital I/O lines. Built for embedded and industrial systems operating in demanding temperature environments, this compact board generates precise analog signals across multiple voltage ranges while providing flexible digital control in a single 90mm × 96mm form factor.
## Technical Specifications
**Analog Output**
• 8 channels, 12-bit resolution (1 part in 4096)
• DAC8412 quad converter architecture
• Output ranges: 0–2.5V, 0–5V, 0–10V (unipolar); ±2.5V, ±5V, ±10V (bipolar)
• 5 mA sourcing/sinking per channel simultaneously
• 6 µS maximum settling time to 0.01%
• ±1 LSB relative accuracy
• 2 kΩ minimum load impedance
• Simultaneous update via software or external trigger
• Power-on reset to mid-scale (0V for bipolar; half full-scale for unipolar)
• User-adjustable preset range: 1V to 2.5V full-scale
• All 8 outputs share single jumper-configured range
**Digital I/O**
• 24 lines via 82C55 controller
• Logic 0 input: −0.5V to 0.8V
• Logic 1 input: 2.0V to 5.5V
• Logic 0 output: 0.0V to 0.4V
• Logic 1 output: 3.0V to 4.6V
• ±2.5 mA per line output current
• 10 kΩ pull-up resistors on all I/O lines
**Electrical**
• +5 VDC ±10% from PC/104 bus
• 290 mA typical power draw
• On-board ±15V supply generation from +5VDC input
## Key Features
• Single 50-pin connector for user I/O with standard 0.1″ ribbon cable compatibility
• PC/104 8-bit bus interface; 16-bit connector not utilized
• Operating temperature: −40°C to +85°C
• Weight: 76 g; dimensions 90mm × 96mm
## Compatibility & Integration
Fully compatible with Diamond Systems Universal Driver. Example software provided. Integrates directly into PC/104 embedded systems requiring simultaneous multi-channel analog generation with digital synchronization.
