GE VMIVME-2170A 32-bit Optically Isolated Digital Output

GE VMIVME-2170A 32-bit Optically Isolated Digital  Output

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.

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

Functional Characteristics

Compatibility:

The VMIVME-2170A is a standard double height  VME printed circuit board and is electrically and mechanically  compatible with the VMEbus.

Addressing Scheme:

Addressable as four 8-bit ports or two  16-bit registers, located on any 32-bit boundary within the short  supervisory or short nonprivileged I/O space.

VMEbus Access:

Address modifier bits are decoded to support  either short supervisory or nonprivileged short I/O access. A  single jumper is provided to support this option and is factory  configured for short supervisory I/O access.

Output Characteristics

Output Voltage: 30 V maximum

Output Isolation: 10 MΩ, minimum

Isolation Voltage: 1,000 V maximum sustained field-to-VMEbus,  6,000 V for one second. Sustained channel-to-channel potential  is 500 V maximum.

Physical/Environmental Specifications

Dimensions: Double height Eurocard

Height: 9.2 in. (233.4mm)

Depth: 6.3 in. (160mm)

Thickness: 0.8 in. (20.3mm)

Temperature:  

Operating: 0 to +55° C

Storage: -20 to +85° C

Altitude:

Operating: 0 – 10,000 ft (3,000m)

Humidity:

Operating: relative humidity 20% to 80%, noncondensing