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
2.7
----------IMPORTANT----------
In all cases, the "ground" terminal of the 4030 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)
