GE VMIVME-4150 Isolated 12-Channel 12-bit Analog Output Board with
Features
The VMIVME-4150 is a 12-bit Analog Output Board which provides 12þisolated high
quality 12-bit analog output channels on a single 6U form factor VMEbus board. Each
channel is electrically isolated from all other channels and from the VMEbus. Listed
below are some features of the VMIVME-4150 :
• 12 fully isolated analog outputs
• 1.000 Vpk isolation, channel-to-channel and channel-to-bus
• 12-bit resolution
• Bipolar voltage output ranges selectable as ±2.5. ±5. or ±10 V
• Unipolar voltage output ranges selectable as 0 to 2.5 V, 0 to 5 V, or 0þtoþ10 V
• 10 mA load capacity for voltage outputs over full ±10 V range
• Available with 4 to 20. 0 to 20. or 5 to 25 mA current loop outputs
• 0.05 percent accuracy for voltage outputs, 0.08 percent for current loop outputs
• 4. 8. or 12-channel configurations
• Optical data coupling provides full galvanic isolation
• Static readback data registers simplify program control
• Front panel access for field connections
• Program-controlled connect/disconnect operation of voltage outputs facilitates
system testing
Functional Description The VMIVME-4150 internal organization is illustrated in the functional block diagram shown in Figure 1.2-1. The board will operate with sustained isolation voltages as high as 1.000 Vpk. Bipolar output voltage ranges are selectable as ±2.5. ±5. or ±10þV. Unipolar output voltage ranges are selectable as 0 to 2.5 V, 0 to 5 V, or 0þtoþ10þV, and full 10þmA loading is supported throughout these ranges. 4. 8. or 12 channel configurations are available. Voltage outputs may be disconnected under program control during system testing, and are disconnected automatically during reset. Optional current-mode outputs support applications that require standard 4 to 20. 0 to 20. or 5 to 25 mA analog current loops. Compliance of the current mode outputs is 9 V if the loop supply originates on the board, or 27 V with an external loop power supply. A front panel LED (Fail) is provided. The LED light is on during system reset and can be turned OFF under user software control.
