National Instruments E Series - Manual (Page 43)

Chapter 4 Signal Connections
 National Instruments Corporation 4-7 DAQCard E Series User Manual
FREQ_OUT DO — — 3.5 at (Vcc-0.4) 5 at 0.4 1.5 50 k
Ω
pu
AI = Analog Input DIO = Digital Input/Output pu = pullup
DO = Digital Output ADIO = Analog/Digital Input/Output
1 DIO <6..7> are also pulled up with a 10 k
Ω
resistor.
2 Also pulled down with a 10 k
Ω
resistor.
Warning: Unless specifically indicated in the Protection column of Table 4-2, the outputs of DAQCard E Series cards
are not short-circuit protected. Exceeding the output limit in the Source and Sink columns can damage your
DAQCard .
Table 4-2. I/O Signal Summary, DAQCard-AI-16E-4 (Continued)
Signal Name Drive Impedance
Input/
Output
Protection
(Volts)
On/Off
Source
(mA at V)
Sink
(mA at
V)
Rise
Time
(ns)
Bias