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National Instruments Corporation
7
NI myDAQ User Guide and Specifications
For example, if you use 50 mA on +5 V, 2 mA on +15 V, 1 mA on –15 V,
use four DIO lines to drive LEDs at 3 mA each, and have a 1 mA load on
each AO channel, the total output power consumption is:
5 V
50 mA = 250 mW
|+15 V|
2 mA = 30 mW
|–15 V|
1 mA = 15 mW
3.3 V
3 mA
4 = 39.6 mW
15 V
1 mA
2 = 30 mW
Total output power consumption
= 250 mW + 30 mW + 15 mW +
39.6 mW + 30 mW = 364.6 mW
Digital Multimeter (DMM)
The NI myDAQ DMM provides the functions for measuring voltage
(DC and AC), current (DC and AC), resistance, and diode voltage drop.
DMM measurements are software-timed, so update rates are affected by the
load on the computer and USB activity.
NI myDAQ Software Overview
NI ELVISmx Driver Software
NI ELVISmx is the driver software that supports NI myDAQ.
NI ELVISmx uses LabVIEW-based software instruments to control the
NI myDAQ device, providing the functionality of a suite of common
laboratory instruments. Refer to the
Using NI myDAQ with Soft Front
section for information on the NI ELVISmx suite
of measurement instruments.
NI ELVISmx is located on your driver software installation media included
in the NI myDAQ kit, or can be found by searching for
ELVISmx
on the
Drivers and Updates
page at
ni.com/driver
s
. To determine the version
of NI ELVISmx software support required for your version of LabVIEW,
go to
ni.com/info
and enter the Info Code
ELVISmx
s
oftware
.
NI LabVIEW and NI ELVISmx Express VIs
Also installed with NI ELVISmx are the LabVIEW Express VIs, which use
NI ELVISmx software instruments to program NI myDAQ with more
enhanced functionality. For more information on the NI ELVISmx Express
VIs, refer to the
section.
Note
NI ELVISmx supports LabVIEW (32 bit). To use NI ELVISmx with LabVIEW on
a 64-bit operating system, you must have LabVIEW (32 bit) installed.