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5.0 performance tests
5.1. Test equipment required
Specification
Accuracy better than 0.5% in V and mV ranges
Able to measure
• distortion to 0.001% with 200Hz high pass filter
• signal to noise ratio greater than 95 dB with IHF
A-weighted filter
20 MHz, dual channel
8 Ω (125 W) and short circuit
2 off
Equipment
True RMS multimeter
Audio analyser
Oscilloscope
Output loads
Shorted phono plugs
Various leads
Figure 5.1 Performance test set-up. Connections for left channel shown, repeat connections for right channel.
+ ±
8 Ω Load
AC Power Input
OscilloscopeAudio analyser
Output Input
Ch 1 Ch 2
CD I/P
Scope Probe