Technical data

Troubleshooting Guide 5
N1911A/1912A P-Series Power Meters Service Guide 53
ChB peak path Verifies that the peak path
of channel B is working
(Note: This does not prove
that the peak path meets its
specifications)
Replace the DAP assembly
for channel B to see if this
clears the fault
DAP assembly, channel B
(low probability)
Main board (high probability)
ChB CW path Verifies that the average
path of channel B is
working
(Note: This does not prove
that the average path
meets its specifications)
Not applicable Main board
ChB DAP check Executes an internal self-test
procedure on the DAP
assembly for channel B
Replace the DAP assembly
for channel B to see if this
clears the fault
DAP assembly, channel B
(high probability)
Main board (low probability)