Quantum Data 881 User Manual page 738

GFED?
Class
Description
Query syntax
Query response
Example
Related commands
360 Appendix A Command Reference
Get First Error Data
DVI/HDMI Signal Analyzer
Returns information about the first error encountered during the signal analyzer test.
GFED?
expected value followed by the errant value (in hex)
PNAU //Pseudo-random noise generated
CR //Stop pseudo-random noise
GFED? //Returns expected (40018C) and errant (FFFFFF) value of first
errored pixel
40018C,FFFFFF
PNAU