65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: +359 56 820027, Fax: +359 56 836700
E-mail: [email protected] ,Web: www.devabroadcast.com
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AC Mains Power
FUSE HOLDER
The fuse holder is placed inside the unit, next to the voltage selector. Apply downward pressure
and pull the cap outward to access the 5mm mains fuse. The reverse process will release the cap.
MAINS VOLTAGE SELECTOR
Before connecting the AC Power, make sure that the internal Power Switch and the fuse rating
are in accordance with the mains supply at your location.
DB3012 Power Supply Factory Settings are:
- 100 - 240 VAC
- 1 Amp Fuse
CAUTION:
Permanent damage will result if improper AC supply voltage is applied to DB3012
device. Your warranty does not cover damages caused by applying improper supply voltage, or use
of an improper fuse.
POWER CORD
The detachable IEC-type power cord is supplied with the unit. The individual cord conductors
may be color-coded in either of two ways:
1) In accordance with US standards:
BLACK = AC “HOT”
WHITE = AC NEUTRAL
GREEN = EARTH GROUND
2) To European CEE standards:
BROWN = AC “HOT”
BLUE = AC NEUTRAL
GREEN/YELLOW = EARTH GROUND
GROUND LOOPS
Because the unbalanced RF INPUT of the DB3012 is chassis-ground-referenced, a mains
frequency or RF ground loop could be formed between the input or output cable shield grounds
and the AC power cord ground. A ‘ground-lifting’ AC adapter may well remedy such a situation,
although the chassis somehow must be returned to earth ground for safety. Generally, being
screwed-down in the equipment rack will satisfy the safety requirement.
