Inspection and preventive maintenance
7. Depending on the displayed results, follow the instructions in the table.
result interpretation instructions
OK
measured impedance is within expected range enclosure is in working order electrically
?
unsupported preset family only supported enclosures should be tested
NC
Not Connected if cables are connected:
a. inspect the cables and connections
b. go to step 8 (p.83)
NOK
measured impedance is not within expected
range
UNDEF /
UNDF
measured impedance is undefined
a. check that all the prerequisites are met, in
particular that the loaded preset or layout
corresponds to the connected speaker's
family
b. inspect the cables and connections
c. go to step 8 (p.83)
8. Select each output with a NC, NOK, or UNDEF / UNDF result.
The amplified controller displays:
• the tested frequencies,
• information on the measured impedance:
• OPEN for open circuit (found in NC results),
• SHORT for short circuit (found in NOK results), or
• a percentage of variation from the expected range (found in NOK and UNDEF / UNDF results)
• the number of operational transducers out of the total
Low variations from the expected range are acceptable: displayed percentage can be different from 0 and
all transducers considered operational.
L2 owner's manual (EN) version 5.0 83
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