National Instruments PC-DIO-96/PnP, User Manual

Page: 44 / 136

Appendix A Specifications
PC-DIO-96/PnP User Manual A-2
©
National Instruments Corporation
Output signals
Pin 49 (at +5 V) .......................... 0.5 A max
Pin 99 (at +5 V) .......................... 0.5 A max
Note: The total combined current output from pins 49 and 99 may be limited by
the available current from your computer power supply. To determine the
available current, subtract the maximum power consumption of the board
from the maximum current per slot. The difference, if less than 1 A, is the
maximum combined current available to pins 49 and 99. If the difference
is equal to or greater than 1 A, the maximum current available is restricted
by the limitations of the connector, as shown previously. If your external
circuitry requires 0.5 to 1 A of current, connect pins 49 and 99 in parallel
to distribute the current.
Transfer rates .................................... Up to 780 kbytes/s
Note: The upper limit on maximum transfer rates is constrained primarily by the
software and operating system rather than hardware interface for
non-DMA boards such as the PC-DIO-96/PnP. The maximum transfer rate
listed here was obtained using inline assembly C code on a 90 MHz
Pentium-based computer. Transfer rates will be significantly lower under
typical high-level software environments and will vary.
Power Requirement
+5 VDC (
±
10%) ................................ 0.45 A typ, 1 A max
Physical
Dimensions ....................................... 16.5 by 9.9 cm (6.5 by 3.9 in.)
I/O connector .................................... 100-pin male, ribbon-cable
Environment
Operating temperature ....................... 0
°
to 70
°
C
Storage temperature........................... -55
°
to 150
°
C
Relative humidity .............................. 5% to 90% noncondensing