5
TRANSPORT
The right-hand knob (Sk
2
) is provided with a green dot.
Whenever the instrument is transported, set this knob to the position marked
with the green dot. In this position the galvanometer is short-circuited.
The same precaution should he taken when the meter is to be sent to the
repair shop.
ACCESSORIES (available on order)
1 pair of universal plugs, type P 995 00;
1 pair of measuring flexes, type P 997 04, complete with probe pins;
1 leather bag with carrying straps, type P 997 05;
1 transistor tester, type P 997 09;
1 step down transformer (300/3 Amps, 2 ½ VA, class 1, type
P 997 10.
MAINTENANCE
The inside of the window in the front panel of the universal meter is coated
with a colourless liquid having antistatic properties, to prevent static
charges, which may affect the position of the pointer and attract dust. This
side of the window must not be rubbed with a cloth or anything similar,
since otherwise the inside will become dull and the antistatic effect will be
lost.
OPERATION
The position of knobs and sockets is shown in Fig. 1.
ZERO SETTING
Before starting measurements, it is recommended to check and, if
necessary, to correct the zero settings as follows:
a.
for the current/voltage scale (A V), mechanically with the set screw
"St";
b.
for the resistance scale (Ω), with knob "R", with s and - short-
circuited (see also point E at page 7).
Remark concerning the zero adjustment
Turning over a meter that has been checked for use in the flat
position to
the upright position (or the reverse) may result in a difference
of one scale division in the deflection of the pointer at any point on the 0 -
12 V scale; it is therefore necessary always to check the zero adjustment
again and, if necessary, to correct it.
