Page 4.6
BRIC
INTEGRATED PXI MATRIX SYSTEM WITH BIRST™ (40-562B)
pickering
SECTION 4 - PROGRAMMING GUIDE
PROGRAMMING THE MODULE - STANDARD VERSION
For all configurations of the standard 40-562B, the entire matrix is treated as a single programming sub-unit
designated as Sub-Unit 1. Operating an X/Y crosspoint creates a signal path through the matrix. For configurations
with isolation switches, these are automatically operated when Y signals are routed between sub-matrix cards. This
allows the Y signal to be accessed by other sub-matrix cards as well as routing it to the front panel connector on
sub-matrix card1. Shown below are some simple examples using the provided drivers: the IVI driver, the Direct IO
driver, and the IVI compliant driver.
Using The IVI Driver, Direct I/O Driver or VISA Driver
This section provides some code fragments which show how to control the standard versions of the 40-562B BRIC
Matrix using the IVI Driver, Direct I/O Driver or the VISA Driver.
Once the drivers are installed the manual “Sys40Prg.pdf” and driver help files which fully describes these functions
can be found in the Pickering folder(s) or the Pickering entries on your Start Menu.
The card must be opened before use and closed after using the following function calls:
Direct I/O Driver - Open with
PIL_OpenCards
or
PIL_OpenSpecifiedCard
and close with
PIL_CloseCards
or
PIL_CloseSpecifiedCards
respectively.
VISA Driver - Open with
pipx40_init
, and close with,
pipx40_close
.
Setting a Matrix Crosspoint:
Using the IVI driver:
pi40iv_Connect(vi, “x1”, “y2”); //set crosspoint x1, y2 to on
pi40iv_Disconnect(vi, “x1”, “y2”); //set crosspoint x1, y2 to off
Using the Pickering Direct I/O driver:
DWORD SubUnit = 1;
PIL_ClearSub(CardNo, SubUnit);
//clear all crosspoints to off state
PIL_OpCrosspoint(CardNo, SubUnit, 2, 1, 1); //set crosspoint x1, y2 to on
PIL_OpCrosspoint(CardNo, SubUnit, 2, 1, 0); //set crosspoint x1, y2 to off
Using the VISA driver:
ViUInt32 SubUnit = 1;
pipx40_clearSub(vi, SubUnit); //clear all crosspoints off state
pipx40_setCrosspointState (vi, SubUnit, 2, 1, VI_ON); //set crosspoint x1, y2 on
pipx40_setCrosspointState (vi, SubUnit, 2, 1, VI_OFF); //set crosspoint x1, y2 off
