NI PCI-7390, Руководство пользователя

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Chapter 4 Signal Connections
© National Instruments Corporation 4-17 NI PCI-7390 User Manual
Figure 4-11. General-Purpose Output Circuit
Selecting Sinking or Sourcing General-Purpose
Outputs
Use the jumpers on the PCI-7390 to select between sinking and sourcing
general-purpose outputs. You can configure each output bit individually.
To set the general-purpose output bit as a sourcing output bit, place the
jumper across SRC and OUT. To set the output bit as a sinking output bit,
place the jumper across OUT and SNK. Refer to Figure 4-12 for the jumper
placement. Table 4-3 shows the relationship between the jumper name on
the PCI-7390 and the specific output bit you want to configure.
Figure 4-12. General-Purpose Output Jumper Settings
1 Sinking Configuration 2 Sourcing Configuration
Optocoupler
PCI-7390
Iso +5 V
Isolated
Ground
Isolated Ground
General-Purpose
Output Supply
Sourcing
Driver
Sinking
Driver
SRC
SNK
OUT Output
Optocoupler
Iso +5 V
General-
Purpose
Output
Supply
SRC
OUT
SNK
SRC
OUT
SNK