National Instruments 3.22E+04 用户手册

© National Instruments Corporation

This appendix describes the characteristics of the serial hardware, the 
NI-Serial software, along with the recommended operating conditions.

Dimensions............................................. 10.67 by 14.22 cm

(4.2 by 5.6 in.)

I/O connector.......................................... DB-9

Power requirement (from PCI channel)

PCI-485/2

+5 VDC.................................... 350 mA typical

750 mA maximum

PCI-232/2

+5 VDC.................................... 50 mA typical

100 mA maximum

±

12 VDC.................................. 20 mA typical

200 mA maximum

Dimensions............................................. 10.67 by 14.22 cm

(4.2 by 5.6 in.)

I/O connector.......................................... DB-9

Isolation voltage

From port to port............................. 2000 Vrms/60s

From any port to host computer...... 2000 Vrms/60s