VMIVME-1150-123L is a VMIVME-1150 series, 64-bit optocoupler-isolated digital input board.
Core function
VMIVME-1150 is specially designed for the VMEbus system, providing an 8-byte digital input port with high isolation and noise resistance.
Input organization
64 optical couplers isolate digital inputs, which are organized into 8 ports with 8 bits each, and are addressed as 8 consecutive 8-bit read-only registers. It can be independently addressed to short supervised or short unprivileged I/O space on 8-bit or 16-bit boundaries.
Signal conditioning
The input supports two modes: voltage source or current source (suction), and the voltage range is 5 to 48 VDC. This model (-123L) is configured as a 12 VDC input option.
Electrical isolation
Each input channel is electrically isolated from the VME bus through an optical coupler, providing isolation protection with a continuous voltage of up to 1,000 V and pulse voltage of 7,500 V, effectively blocking the interference of external high voltage, noise, or ground loops on the VME backplane.
Logical polarity
This model is configured as true logic: when the current flows through the optocoupler LED (that is, the input is asserted), the board card presents a logic "1" to the VME bus.
wave filtering
This model of 5 ms R-C filter performs hardware debounce on all 64 input channels, which is suitable for reliable acquisition of mechanical contacts or switch signals.
Bus access
D8 or D16 data transmission is supported, and the maximum access time is 250 ns. The board address is selected by the onboard DIP switch, which supports any VME slot except Slot 1. DTACK response is generated after the data strobe (DS0 or DS1) and decoding of the board address.
Physical specification
Appearance: dual-height (6U)Eurocard standard printed circuit board with front panel.
Connector: dual 64-pin I/O connector, compatible with DIN standard.
Compatibility: electrically and mechanically compatible with the VMEbus standard.
VMIVME-1150-123L
VMIVME-2510B
VMIVME-2540-000
VMIVME-3122
VMIVME-4116
VMIVME-4140
VMIVME-7486
VMIVME-7700-110000
VMIVME-7750-746
VMIVME-7807
VMIVME-7807RC
