The DynamicSignals / Kinetic Systems 3922-Z1B is a double-width CAMAC Parallel Bus Crate Controller that interfaces host computers with CAMAC modules in instrumentation racks. It employs an eight-bit multiplexed parallel bus with RS-485 balanced-line signaling, enabling communication distances up to 91 meters (300 feet) and supporting up to eight crate controllers on a single bus. Field-selectable as main or auxiliary controller, the 3922-Z1B delivers flexible multi-crate system architecture for automated measurement and control applications.
## Technical Specifications
**Bus Architecture**
• Eight-bit multiplexed parallel bus for address and data transfer
• RS-485 balanced-line signaling
• Maximum bus length: 91 meters (300 feet)
• Twisted-pair, flat-ribbon bus cable
• Bus termination by last 3922 controller on the bus
• Up to 8 crate controllers addressable per bus
**Crate Control**
• Front-panel switch selectable crate address: 0–7
• Field-selectable main or auxiliary crate controller operation
• 24-bit LAM (Look-At-Me) mask
• Interrupt support via CAMAC Done or pending LAM
• Parallel poll capability during LAM interrupts
**Data Transfer Performance**
• DMA support via Models 2922, 2926, 2927, 2928 interface cards
– Model 2922: 16-bit DMA up to 1 Mbyte/s
– Model 2926: 16-bit DMA up to 250 kbyte/s
– Model 2927: 16-bit DMA up to 800 kbyte/s
– Model 2928: 16-bit DMA up to 500 kbyte/s
• Block transfer support via Models 2917 (VME), 2932 (Macintosh II), 2915 (PCI)
**Physical**
• Double-width CAMAC module form factor
• Compliant with IEEE-583 CAMAC standard
## Key Features
• Multi-crate scalability with eight-controller addressing per bus
• Extended communication range supports distributed measurement systems
• Direct memory access eliminates programmed I/O bottlenecks
• Parallel poll reduces interrupt service routine overhead in multi-crate configurations
• Field-programmable controller role simplifies system reconfiguration
## Compatibility & Integration
Host computer integration requires compatible interface cards:
• IBM PC/AT, PS/2: Models 2926, 2927, 2928
• DIGITAL Q-bus: Model 2922
• Macintosh II: Model 2932
• VME systems: Model 2917
• PCI systems: Model 2915
