From SpinetiX Support Wiki
The environmental specifications are listed for each player model in the following table.
|HMP400||HMP350, HMP300, DiVA||HMP200||HMP130, HMP100|
|Internal temperature sensor||Yes||Yes||Yes||No|
|Storage temperature||-4ºF to 122ºF / -20ºC to 50ºC||-13ºF to 113ºF / -25ºC to 45ºC|
|Operating ambient temperature||32ºF - 104ºF / 0ºC - 40ºC|
|Relative humidity||10-90% non-condensing|
|Maximum operating altitude||10,000 ft (ca. 3,048 m)|
The SpinetiX players, from the HMP200 model onwards, are featuring a sensor that monitors the device internal board temperature. This temperature is measured inside the player - it is not the external case temperature, nor the ambient one! The internal temperature is influenced by the surrounding environment temperature, the heat dissipation grade, but also by the content being rendered - the higher the complexity, the more CPU usage, and thus more heat being generated.
The internal temperature is displayed within Control Center under:
When the internal temperature reaches the selected shutdown temperature level - normal or maximum - the device shuts down in order to cool down; when the internal temperature has lowered below the threshold value, the device automatically restarts. The same process will happen, if the internal temperature rises again.
By default, the shutdown temperature is set to normal (55ºC / 131ºF); you can increase this to maximum (70ºC / 158ºF) from Control Center:
- System > Hardware Settings page for HMP350, HMP300, and DiVA;
- Maintenance > Hardware tab for HMP200.
CPU thermal throttling
On HMP400/HMP400W, the protection mechanism is different - it is based on the dynamic frequency scaling (also known as CPU throttling), whereby the frequency of the microprocessor is automatically adjusted "on the fly" when its internal temperature is closing up to 105ºC / 221 °F to reduce the amount of heat generated by the chip. But taken into account that the CPU is functioning in industrial mode (limited to 6.5W), this temperature cannot be reached even at 40ºC operating environment. Yet, if the latter is higher, which should be avoided of course, then the CPU frequency will be automatically be lowered (the performance might be affected!), but the player will not shut down.