Clip LEDs, SOA Protection, DC Protection | Camco P.5 Series instruction

4 OPERATION

P.19

4.2.3 Clip LEDs

If the power level is overloaded, the Clip LED will light up.

4.3Power Amp Protection Systems 4.3.1 Clip Limiter

If the power amp is overdriven, the clip detection triggers the Attack-Release- Circuit (ARC). The ARC delivers the control voltage for the gain reduction. Two different attack modes (fast and slow) could be chosen with the Clip Limiter switch (see 4.1.4 Limiter Switch).

4.3.2 SOA Protection

Whenever the power transistors leave their Safe Operation Area (SOA), the SOA-protection in stereo mode switches back the current rail of the respective channel. In mono modes the rails of both channels are switched back.

USER MANUAL

TECTON POWER AMP SERIES

4.3.3 DC Protection

Each output of the power amp is constantly monitored for persistent DC voltage levels. If the 3 V thresholds are exceeded at any of the outputs, the correspond- ing channel will be muted. If DC was only applied for a short moment, the ampli- fier will release mute and work as normal. If DC is applied for longer periods or several short times the amplifier will switch to standby mode.

Switch off the amplifier, wait until the power LED stops flashing and switch the amplifier on again.

4.3.4 DC Servo

To prevent DC Offset at the speaker output the TECTON is fitted with a DC Servo.

4.3.5 Over Current Protection

Over current is permanently controlled in the output stage. There are two limit ing levels of over current depending on output voltage. These limits will be set automatically. This improves reliability without degrading sound quality when driving complex loads.

4.3.6 Thermal Protection

There are several sensors in the amp in order to ascertain temperature data. If a temperature of more than 85 °C is detected at the heat sinks, the input signal on that channel is reduced. If the temperature exceeds 100 °C, the main SMPS is switched off.