Filter
Top Products
Appendix E Specifications for AT Serial Hardware
© National Instruments Corporation E-9 Serial Hardware and Software for Windows
AT Serial Hardware
Hardware Characteristics
Two-Port AT Serial Boards (Nonisolated)
Dimensions.............................................10.67 by 16.51 cm
(4.2 by 6.5 in.)
I/O connector..........................................DB-9
Power requirement
(from PC AT I/O channel)
AT-485/2.......................................... +5 VDC 390 mA typical
510 mA maximum
AT-232/2.......................................... +5 VDC 260 mA typical
340 mA maximum
AT-485/2 (Shared IRQ)................... +5 VDC 140 mA typical
180 mA maximum
AT-232/2 (Shared IRQ)...................+5 VDC 70 mA typical
100 mA maximum
Two-Port AT Serial Boards (Isolated)
Dimensions.............................................10.67 by 18.70 cm
(4.2 by 7.4 in.)
I/O connector..........................................DB-9
Isolation Voltage
From Port to Port ............................ 3000 Vrms/60s
From Any Port to Host
Computer ........................................ 2000 Vrms/60s
Power Requirement
(from PC AT I/O channel)
AT-485/2 Isolated............................ +5 VDC 220 mA typical
260 mA maximum
AT-232/2 Isolated............................ +5 VDC 160 mA typical
200 mA maximum