VMIVME-2170A 32-bit Optically Isolated Digital Output

Description

VMIVME-2170A 32-bit Optically Isolated Digital Output

Features:
• 32 optically isolated outputs
• 2.5 or 300 mA outputs
• Externally supplied pull-up voltage for maximum isolation
• Field-configurable pull-up resistors
• Source or sink output capability with low current option
• High output voltage tolerance to 30 V normal mode
• High isolation potential; 1 kV sustained, 6 kV pulsed
• Positive or negative true options
• 8- or 16-bit data transfers
• On-board DIP switches provide 14-bit board address selection
• Double Eurocard format with front panel
• Field-selectable nonprivileged or supervisory short I/O transfers

Applications:
• Digital control from VMEbus
• Elimination of system ground loops
• Control in high-electrical noise environments
• Control of multiple-potential system components

VMIVME-2170

Introduction: The VMIVME-2170A Optically Coupled Digital Output board consists of VMEbus compatibility logic, data
control logic, four 8-bit output registers, and 32 optically isolated high-level outputs. The board is implemented as a double
Eurocard form factor PC board, and provides all necessary address decoding and data transfer control logic to accept both
8- and 16-bit data transfers. Optical couplers isolate the 32 outputs from each other and from the VMEbus. Both supervisory
and nonprivileged data transfers are supported.
The VMIVME-2170A’s typical output configuration is shown in Figure 1. The internal configuration of the VMIVME-2170A board
is shown in Figure 2.
Board Function: 32-bit, optically isolated, digital output board, designed and optimized specifically for the VMEbus. Featuring
high isolation, the VMIVME-2170A board is shown in Figure 2.

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