DayTronic 4000 Series User Manual

Each DC-powered 4077 unit has a 4-amp buss FUSE. To change
the fuse, use a screwdriver to turn the fuse slot counterclockwise,
and the fuse will spring out. IN THE EVENT OF AN APPARENT
POWER-SUPPLY FAILURE, FIRST CHECK THE FUSE. WHEN
REPLACING A "BLOWN" FUSE, ALWAYS INVESTIGATE THE
CAUSE OF OVERLOAD BEFORE REACTIVATING THE
INSTRUMENT.
2.b Powerup
2.6
----------IMPORTANT----------
In all cases, the "ground" terminal of the 4077 DC CONNEC-
TOR should be connected either to the negative terminal of
the vehicle battery or directly to the vehicle chassis. IT
SHOULD NEVER BE LEFT UNCONNECTED. ALSO, TO
MINIMIZE NOISE PICKUP, THE GROUND LEAD SHOULD BE
AS SHORT AS POSSIBLE.
The configuration shown in Fig. 7(a) is normally recom-
mended. Under conditions of HIGH ELECTRICAL NOISE,
however, you should make the connections shown in Fig. 7(b).
DC POWER
CONNECTOR
Vehicle
Battery
Fig. 7(a)
DC POWER
CONNECTOR
Vehicle
Battery
Fig. 7(b)

DayTronic 4000 Series Specifications

General

Brand	DayTronic
Model	4000 Series
Category	Measuring Instruments
Language	English