ENCLOSURE CHECK
technical bulletin
ENCLOSURE-CHECK_TB_EN_1.0
l-acoustics.com
4 / 5
RESULTS
Five different results can be displayed for each output:
OK
,
?
,
NC
,
NOK
and
UNDEF
.
Table 1: Interpreting the results
Result
Description
Interpretation
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:
1.
Inspect the cables and connections
If necessary, replace the cables and repeat
the check.
2.
Hold the
OUT
key for details and open the
enclosure for investigation.
NOK
measured impedance is not within expected range 1.
Check that all the requirements are met
(see section REQUIREMENTS).
Check in particular that the loaded preset
corresponds to the connected loudspeaker’s
family.
2.
Inspect the cables and the connections
If necessary, replace the cables and repeat
the check.
3.
Hold the
OUT
key for details and open the
enclosure for investigation.
UNDEF
measured impedance is undefined
Under
NC
,
NOK
and
UNDEF
results, press and hold the
OUT
key to display the tested frequencies, details on the
measured impedance, and the number of operational transducers out of the total.
Details on the measured impedance can be:
OPEN
for open circuit (found in
NC
results)
SHORT
for short circuit (found in
NOK
results)
a percentage of variation from the expected range (found in
NOK
and
UNDEF
results)
Once the causes for short circuits and unexpected open circuits are identified and fixed, repeat the check.
