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General| Amplifier Technology | Class D |
|---|---|
| Number of Channels | 2 |
| Frequency Response | 20 Hz - 20 kHz (±0.5 dB) |
| Total Harmonic Distortion | <0.1% |
| Input Impedance | 20 kΩ |
| S/N Ratio | > 100 dB |
| Protections | Thermal, short circuit, overload |
| Power Supply | Switching Power Supply |
| Cooling | Fan-cooled |
| Operating Voltage | 85 - 264 VAC (50/60 Hz) |
| Dimensions (W x H x D) | 483 x 88 x 430 mm (19" x 3.5" x 16.9") |
Method to safely discharge capacitors on DigiMod PFC2.
Method to safely discharge capacitors on DigiMod PFC4.
Steps to check fuse and varistor for continuity and resistance.
Procedure to test MOSFETs for short circuits using a multimeter.
Procedure to check the DC power supply current draw.
Measuring current absorption for PFC2 and PFC4 amp stages.
Using an oscilloscope to check PFC converter waveforms.
Measuring rail voltages (+58.5Vdc, -58.5Vdc) using a multimeter.
Checking PFC2 output stage MOSFET waveforms with an oscilloscope.
Guidelines and recommendations for safe servicing procedures and ESD protection.
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