Measurement Computing DataShuttle - Manual (Page 94)

11-2 Getting Started with QuickLog 11-1 3-01 DataShuttle and DynaRes
Options Menu: General
Sample And Log Rate You may select the Sample Rate, in Hz, which is the rate of reading and
displaying inputs and logging to disk. The maximum rate depends on the
Mode you have selected, the speed of your PC, and the data acquisition
hardware installed.
Mode The Polled (or Asynchronous) mode samples at the rate set by the
application, and is the slowest data acquisition rate. This mode does not use
interrupts for most data acquisition devices. However, this mode is the
simplest to use.
The Interrupt (or Synchronous) mode samples at a precise rate set by the
driver, and allows much faster sampling. Most data acquisition devices
generate hardware interrupts to pace the driver, and thereby set the rate.
Refer to the on-line help for more information about these modes.
Input Meters When first launched, QuickLog detects the hardware installed, and creates a
default user interface made up of a table of windows, called Input Meters,
which display the analog, digital, or Counter/Timer values being sampled.
You may change the number of Meters being displayed, as well as the
number of horizontal and vertical Meter windows, using the General
Options menu. Color and font size are also selectable.
Output Meters You may set up the Output Meters in the same fashion as described above,
if you have a device installed that has analog or digital outputs.