Graphics Tablet User's Manual

When the program checks for an event from the operating system (e.g. to react to user input), it can put itself to sleep
for a specified period of time. This gives other applications more processor time, but limits the performance of
AcqirisLive in terms of maximum acquisition rate. The default is not to go to sleep, but this can be overridden to
allow better performance for other applications. Note that this sleep policy is only in effect while the acquisition is
running. When the acquisition stops, the sleep policy is always reset to the longest sleep period.
Acquisition Interrupts
When performing acquisitions, there are 2 possible ways to wait for the acquisition to complete: polling or using a
hardware interrupt.
• -p Polling: AcqirisLive runs as a single thread process. After an acquisition is started, the instruments are
regularly polled to check when the acquisition is complete. The user interface is still alive, but the latency
for reading the data after the acquisition may vary.
• -i Hardware interrupt: In this mode, AcqirisLive is run as a multi-thread process. After starting an
acquisition, a new thread is created to wait for the hardware interrupt indicating that the acquisition
completed. This thread is put to sleep, and wakes up upon reception of the interrupt from the instrument, or
after a 2 seconds timeout.
Please note that switching the DMA data transfer mode off precludes the use of acquisition interrupts. The –i switch
will therefore be ignored when –n is used.
Transient Recorder mode
The application will start in the Transient Recorder mode as opposed to the oscilloscope mode. In this case, if a file
name of an AqConfig setup file is given on the command line it will be loaded.
Simulation Mode
Simulation mode allows you to run AcqirisLive without having any digitizer installed in the PC.
Temperature Update
The internally measured temperature of the currently selected module is normally displayed. Using this switch turns
this feature off.
Acquisition State
This switch turns on the display of the current acquisition state (Stopped, Ready, Started, Reading, Data ready). This
is helpful when running with time-consuming settings (e.g. many segments overlaid, many channels, large records,
etc.), but will slow down the overall performance.
Multi-instruments
By default, AcqirisLive tries to detect instruments connected through ASBus, and will initialize any connected
digitizers as a multi-instrument. This behavior can be inhibited by the -x switch, in which case any ASBus connector
will be ignored.
User Manual: Family of 10-bit Digitizers Page 49 of 55