VersaLogic STD32 VL-1225, Справочное руководство

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VL-1225/6 Analog Input/Output Board
2-19
Output Data Format
The digital data format for the analog output channels can be jumpered for binary, offset binary, or two’s
complement. Each channel can be configured independently.
The selection is dependent upon the output voltage range selected with jumpers V1 and V2. Unipolar
voltages should use the binary data format. Bipolar voltages can use two’s complement or offset binary
formats, however, two’s complement is the best choice since it “maps” the positive and negative digital
values into positive and negative voltages.
See the Output Data Representation section starting on page 4-10 for further information on the various
analog output data formats.
Output Range Valid Output Data Formats
±5V Offset Binary or Two’s Complement
±10V Offset Binary or Two’s Complement
0 to +10V Binary
Figure 2-21. Valid Output Data Formats
Jumper Jumper Jumper Jumper Jumper As As As As As
Block Block Block Block Block Description Description Description Description Description Shipped Shipped Shipped Shipped Shipped
V7
1-3 & 3-5
Channel 0 Output Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2’s Comp.
V7
1-3
= Out, V7
3-5
= In – Two’s Complement
V7
1-3
= In, V7
3-5
= Out – Binary / Offset Binary
V7
2-4 & 4-6
Channel 1 Output Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2’s Comp.
V7
2-4
= Out, V7
4-6
= In – Two’s Complement
V7
2-4
= In, V7
4-6
= Out – Binary / Offset Binary
Figure 2-22. Output Data Format Options
Configuration – Analog Output Configuration