Operation Manual
5. Operation and performance
C SERIES Operation Manual rev 3.0.0
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Several ampliers will, under normal conditions, be able to be powered up simultaneously. If you do experience
problems powering up multiple ampliers simultaneously (normally experienced only in very large installations), use
the NomadLink network and the NLB60E to establish a power sequence with pre-set delays before the start-up of
each subsequent amplier.
5.6. Front-panel monitoring
5.6.1. Level indicators
Four signal/level/clip LEDs per channel are contained on the C Series front panels
• Orange CPL (Current Peak Limiter) ashing indicates signal exceeds the limits of the output devices and
limiting is in effect.
• Red VPL/CLIP indicates that the signal has exceeded maximum output voltage. (Maximum voltage is
determined by rear-panel VPL settings.)
• Green - 4 dB indicates output signal has reached this level.
• Green - 10 dB indicates output signal has reached this level.
• Signal / Hi-Imp (Green/red) indicates an output signal above -44 dB. If it turns RED, this indicates that a
high-impedance (“open” connection) has been detected at the output. This can be a fault such as a
disconnected cable or malfunctioning loudspeaker driver. However, it could indicate acceptable high
impedance, such as a sub-bass enclosure with high impedance at a certain frequency. When the -10 dB
signal LED is on AND the Hi-Imp LED turns red then the amplier has detected an open load (no speaker
is connected).
For more detailed signal level indications use the DeviceControl software application.