Extron electronics NetPA Ultra Series User Manual page 68

6
Status Possible Triggers
Output Thermal
The specified amplifier
limiting
channel has overheated
and is muting the affected
channel.
Overload •
The current or power
limiter has been
triggered.
•
A short on the affected
output channel has
been detected.
Open Circuit
The affected channel has
detected an open circuit.
Digital clip
Audio output sounds
distorted.
Unit in standby
The unit has been placed
into standby.
7
Fault statuses section
(see
channel, see table below for details on the specific faults.
Possible Causes
•
The channel is driving
too low of a speaker
load impedance.
•
The channel is being
fed a heavily clipped or
distorted signal.
•
The amplifier operating
environment exceeds
the recommended
operating temperature.
•
Too much current is
being drawn due to
overdriving the output.
•
An improper speaker
load has been attached
(for example, attaching
a low impedance
speaker to a high
impedance output).
•
The output has been
shorted.
•
The connection to the
speaker chain has been
broken.
•
An improper speaker
load has been attached
(for example, attaching
a high impedance
speaker to a low
impedance output).
•
No speaker load is
attached.
The output DAC is being
overdriven.
•
The auto-standby timer
has timed out.
•
The contact closure
port is engaged on the
rear panel.
•
SIS has forced the unit
into standby.
•
DC has been detected
on an output.
Legend — figure 66 on page 58
(see
Red — The amplifier is actively detecting a fault.
•
• Yellow — The amplifier is not actively detecting a fault, but one has been detected
since the last time the status flags were reset.
Gray — The amplifier has never detected a fault.
•
figure 66 — These are faults specific to an amplifier
)
Possible Solutions
•
Make sure the correct speaker load is
connected.
•
Check that speakers are tapped
appropriately.
•
Recheck the amplifier gain structure.
•
Verify that the amplifier ambient
environment does not exceed the
recommended operating temperature
(see suggestions for
the previous page).
•
Recheck the amplifier gain structure.
•
For low-impedance loads: Verify that
total impedance at the amplifier is
≥ 4 ohms.
•
For 70V/100V speaker loads: Recheck
speaker taps.
•
Check for shorts at the output and
throughout the speaker chain.
•
Check for an open circuit at the output
and throughout the speaker chain.
•
Recheck speaker taps.
Recheck the amplifier gain structure.
•
Check that there is sufficient signal
going to the amplifier channel.
•
Check that the standby port is not
engaged.
•
Check that the SIS is not forcing the
unit into standby.
•
If none of the above work, check
for a DC fault (see suggestions for
DC protection).
)
NetPA Ultra Series • DSP Configurator Software
Over Temp
on
61