Specifications - National Instruments NI 6584R User Manual And Specifications

Specifications

Channel Specifications (RS-485/422)
Type of connectors.................................................1 VHDCI (Connector 0)
Number of RS-485/422 I/O channels ....................16 data
Direction control of data channels .........................Individual TX and RX enables
Power up state ........................................................Drivers disabled, receivers enabled
I/O compatibility....................................................RS-485/422 (differential)
Maximum input differential voltage ......................5 V
Characteristic impedance.......................................100 Ω differential nominal
Termination impedance..........................................100 Ω differential nominal or open
Maximum data rate ................................................16 Mbit/s per channel nominal
Figures 10 and 11 show the block diagrams for the full and half duplex versions of the NI 6584.
Note The VHDCI connector shown in the preceding figures is labeled CONNECTOR 0 (Ports 1–8)
on the front panel of the NI 6584.
1
Terminated devices (199496-01/199496-02) have 100 Ω termination. Unterminated devices (199496-03/199496-04) are open.
© National Instruments Corporation
Data from
NI FlexRIO
FPGA Module
Output Enable
from NI FlexRIO
FPGA Module
Data to
NI FlexRIO
FPGA Module
Input Enable
from NI FlexRIO
FPGA Module
Figure 10. NI 6584 Block Diagram (Full Duplex)
Data from
NI FlexRIO
FPGA Module TX
Output Enable
from NI FlexRIO
FPGA Module
Data to
NI FlexRIO
FPGA Module
Input Enable
from NI FlexRIO
FPGA Module
Figure 11. NI 6584 Block Diagram (Half Duplex)
15
(requires proper termination on the bus)
VHDCI
TX
VHDCI
VHDCI
100 Ω or open
RX
VHDCI
VHDCI
100 Ω or open
RX
VHDCI
NI 6584R User Guide and Specifications
1
1
1