Voltage Protection Circuit | Classe Audio SSP-800/CT-SSP guide

PIf there is no output on component video from an HDMI source, the signal is likely HDCP encrypted. Try setting the source up with an analog cable and select an analog video input path.

PIf there is a preview image but no output image, check the display connection. Ensure the YPrPb cables are properly connected if using a component video TV. Some display devices may not display the source’s output resolution (for example, component 720p going into a standard definition display or an HDMI source which is preset to an unsupported resolution for a particular HDMI display.

PIf the preview image looks good but the colors are wrong on the component video display then check that the component cables are properly connected. NOTE: Only a non-copy protected YCrCb HDMI source can be viewed on a component display. Other types of HDMI sources show either no picture or improper colors.

8 Voltage Protection Circuit

When the SSP is connected to AC power, the AC input enters the component through a Voltage Sensing Circuit, which checks the voltage level every 25 milliseconds. Power can only reach the component once it has passed the Voltage Sensing Circuit. The circuit verifies that the power is within tolerable operating levels:

Pof ±10% of its AC line voltage setting.

Pbetween ± 11% and 15% of its AC line voltage setting.

The following behavior of the SSP is the result of the Voltage Sensing Circuit:

PIf the external voltage is within the performance range, the product functions normally.

PIf the external voltage enters the range of the safe operating limit, the standby LED flashes every half-second but the product otherwise continues to function normally.

PIf the external voltage exceeds the safe operating limit for

10 consecutive seconds, the protection circuitry engages and an error message appears on the touchscreen.

PIf the external voltage falls below its performance range, the standby LED flashes indefinitely every half-second until the voltage is insufficient to sustain normal operation.

PYou have to cycle power to reset the protection circuitry. If you attempt to reset the SSP while the external power supply remains

outside the safe operating limit, the protection circuit re- engages, putting the SSP back into Standby mode. We therefore recommend that you wait until the standby LED stops flashing before cycling power and resetting the protection circuitry.