Owner's manual

Chapter 4: PowerDAQ Software
53
Synchronizing two or more boards
Some applications require multiple board synchronization. PDXI-DIO
board has more options for the inter-board synchronization, which
includes PXI bus and external connections via the cables. All other
boards allow synchronization based only on external cabling
connections.
Note Using the PowerDAQ ™ control panel applet; please
ensure the software driver recognizes the two or
more PowerDAQ boards. Custom synchronization
connections are required.
Wiring requirements:
The PowerDAQ DIO J3 internal connector has a TMRx Clock Output pin.
When internal clock is set via the software TMR1 represents output
clock for the input streaming operations and TMR2 represents output
clock for the output streaming operations. You can connect
corresponding pin to the TMRx pin of the next board you wish to
synchronize acquisition. Also, you may synchronize PDx-DIO board with
any of the other available PowerDAQ boards including multifunction,
PDL-MF and analog output series.
When synchronization is required for the PDXI-DIO boards all
connections may be set via PXI bus using the PXI_TRIGx lines. Please
use PXI Configurator software to do this.