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© National Instruments Corporation Index-5 PC-OPDIO-16 User Manual
register map for PC-OPDIO-16
(table), C-1
S
signal connections
exceeding maximum ratings
(warning), 3-1
I/O connector pin assignments
(figure), 3-2
optically isolated digital input, 3-6 to 3-8
input channels, 3-6 to 3-8
power-on condition, 3-8
reducing forward current for 24 V
inputs, 3-8
sensing AC voltages, 3-7
sensing DC voltages, 3-7
signal connection example, 3-7
signal isolation, 3-7
optically isolated digital output, 3-4
to 3-6
increasing switching frequency for
TTL loads, 3-6
maximum power ratings, 3-4
output channels, 3-4 to 3-6
power-on condition, 3-6
signal connection example
(figure), 3-5
signal isolation, 3-4
signal descriptions (table), 3-3
signal isolation
optically isolated digital input, 3-7
optically isolated digital output, 3-4
signal connection example
(figure), 3-5
software configuration
configuration considerations, 2-5 to 2-6
DAQCONF utility, 2-6 to 2-8
overview, 2-5
plug and play software, 2-6
WDAQCONF utility, 2-8 to 2-9
software installation
NI-DAQ for DOS, 2-3
NI-DAQ for LabVIEW, 2-3 to 2-4
NI-DAQ for LabWindows/CVI, 2-4
NI-DAQ for Windows, 2-5
software programming choices
LabVIEW and LabWindows/CVI
application software, 1-2
NI-DAQ driver software, 1-2 to 1-3
register-level programming. See register-
level programming.
specifications
digital input, A-1
digital output, A-1 to A-2
I/O connector electrical
specifications, A-1
operating environment, A-2
physical, A-2
power requirements, A-2
storage environment, A-2
TLP-121 phototransistors, A-2
status codes
NI-DAQ functions, 6-1
summary (table), D-1 to D-9
storage environment specifications, A-2
string passing, for NI-DAQ Windows
programming, 4-9
Borland C++, 4-10
Borland Turbo Pascal, 4-13
Microsoft Visual Basic, 4-15
switching frequency for TTL loads,
increasing, 3-6
switchless mode, configuring, 2-2, 2-5 to 2-
6
T
technical support, E-1
theory of operation
block diagram, 5-1
digital I/O circuitry, 5-2 to 5-3
functional overview, 5-1 to 5-2
I/O channel interface circuitry, 5-2
LabVIEW data acquisition library for
isolated digital I/O, 5-5
NI-DAQ functions for isolated
digital I/O, 5-4
optical isolation circuitry, 5-3
TLP-121 phototransistors, A-2
TTL loads, increasing switching frequency
for, 3-6
Turbo C. See Borland Turbo C++ or
Borland C++.
Turbo Pascal. See Borland Turbo Pascal.