VXI VT1422A, Руководство пользователя

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472 VT1529A/B Verification & Calibration Appendix C
Procedure
If necessary, send the *CAL? query to the VT1422A (required if more than
eight hours has elapsed since the last *CAL? command). The expected
return value is “+0”.
Each channel of the VT1529A/B must be tested individually. Follow the
steps below for each channel to be tested.
Use the VT1422A VXI plug&play Soft Front Panel to select Reset from the
System menu. Then, select Algorithm from the Panels menu. Create the
algorithm below. Note that this algorithm assumes the VT1531A SCP is in
SCP position 1; it is necessary to modify the VT1531A channel numbers
(O108, O109, O110, O111) if the VT1531A is in a different SCP location.
It is also necessary to modify the VT1529A/B channel (I10000) depending
on the channel to be tested. When algorithm creation is finished, click on the
Down Load... button to download the algorithm.
static float loop = 0.0;
static float wrote_fifo = 0.0;
if (First_loop)
{
loop = 0;
O108 = 0;
O109 = 0;
O110 = 0;
O111 = 0;
}
else
{
loop = loop + 1.0;
if (loop == 1000.0)
{
if (I10000 > 0.001)
{
writefifo(-2);
wrote_fifo = 1;
}
O108 = -1.0;
O109 = -1.0;
O110 = -1.0;
O111 = -1.0;
}
if (!wrote_fifo)
{
if (loop > 1000.0 && I10000 > .39)
{
writefifo(1093.75 / (loop - 1000));
wrote_fifo = 1.0;
}
else if (loop == 1999.0)
writefifo(-1.0);
}
}