Source Calibration and Boundary Scans

Fluorescence Threshold Source Three-Row Scan

Photon counts are compared with source thresholds. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

Photon count is compared with the displayed threshold

The source state, count, and threshold are checked together. The result bit must agree with the threshold comparison.

6<8⇒bresult=06<8\Rightarrow b_{\mathrm{result}}=0
Threshold row 0Count, threshold, and result bit are checked.photonCount=6 countthreshold=8 countresultBit=0 bit

Photon count is compared with the displayed threshold

The source state, count, and threshold are checked together. The result bit must agree with the threshold comparison.

12≥12⇒bresult=112\ge12\Rightarrow b_{\mathrm{result}}=1
Threshold row 1Count, threshold, and result bit are checked.photonCount=12 countthreshold=12 countresultBit=1 bit

Photon count is compared with the displayed threshold

The source state, count, and threshold are checked together. The result bit must agree with the threshold comparison.

16≥14⇒bresult=116\ge14\Rightarrow b_{\mathrm{result}}=1
Threshold row 2Count, threshold, and result bit are checked.photonCount=16 countthreshold=14 countresultBit=1 bit

The equality row is bright under the checked rule

Each row compares its displayed count with its displayed threshold. The result bits are shown in the table and checked in the diagram.

cTb6801212116141\begin{array}{c|c|c}c&T&b\\6&8&0\\12&12&1\\16&14&1\\\end{array}
Fluorescence threshold source scanThe equality row is the displayed source.photonCount=12 countthreshold=12 countresultBit=1 bit