halcro-logic dm10 Benutzerhandbuch
Page 22 of 29
TM
dm10
Switching between sources
To select a device, press the appropriate button on the remote control or turn the selector knob
on the front panel until the device you require appears in the center of the display. After a few
seconds, the center of the display will reverts to displaying the volume level, though the
selected program source will remain on the lower left hand corner of the display. Only
allocated devices are available. Note: The Phono Input is always allocated.
If a source is selected (either through the front panel or remote control) and the correct source
is not selected, ensure that the program button adjacent to the input connectors for the selected
source is illuminated. If it is not, these input connectors will need to be re-allocated, refer to
Connecting signal sources
Connecting signal sources
and Allocating signal sources and the remote control, page 19
Electronic Protection and Reliability
Components
Our components are selected not only for performance, but reliability as well.
For example:
All Halcro electrolytic capacitors are rated at a minimum of 105 degrees C instead of the usual
85 degree C rating. The operational life of electrolytic capacitors is severely shortened at
temperatures near their maximum temperature rating. This is shown in the table below.
All Halcro integrated circuits are at least “industrial grade” rather than the usual “commercial
grade.” Industrial grade components are rated at least from –40 degrees C to +85 degrees C
whereas commercial grade components are only rated between 0 to 70 degrees C. In addition,
the electronic specifications of industrial grade components are superior to commercial grade.
Electrolytic
capacitor
temperature rating
Mean lifetime
at 40 degrees
Centigrade
Mean lifetime
at 85 degrees
Centigrade
Mean lifetime
at 105 degrees
Centigrade
85 C (most
commonly used)
50,000 Hours
2,000 Hours
(0)
105 C (used in
Halcro
preamplifiers)
180,000 Hours
8,000 Hours
2,000 Hours
Typical data
Mains transient overload protection
The mains input is protected against all but the most severe mains input transients. Two
independent circuits achieve this.