3
APPLICATIONS
Between 50 and 70
%
of all electrical faults occurring in a radio receiver or
amplifier are such that they can he easily traced by measurements, for
which particularly the PHILIPS Universal Measuring Instrument P 817
00/01 is eminently suitable.
It is the ideal measuring instrument for use in the smaller repair shops or at
the customer's home, owing to its small dimensions and to the fact it does
not require any mains supply.
The following measurements can be carried out with the meter:
a.
direct and alternating voltages from 0 to 1200 V;
b.
direct and alternating currents from 0 to 3 A;
c.
resistances from 0 to 10 MΩ
ELECTRICAL DATA
The voltage loss and the current consumption as given in the table at page 4
apply to full deflection; at less deflection these values are proportionally
lower. All current and voltage scales are linear. For alternating-current and
alternating-voltage measurements the reading remains accurate throughout
the frequency range 30 10,000 c/s, with the exception of the measuring
range of 1200 V, for which the upper accuracy limit lies at 5,000 c/s.
The A.C. and alternating-voltage ranges have been calibrated for a purely
sinusoidal signal. Although the meter can, if necessary,
be used
standing
upright, it measures more accurately lying down
(see also
page 5, under
"zero setting").
PROTECTION
For all commonly used
measuring
ranges
the
galvanometer can stand
overloading for a short
time. This does not hold,,
however, if the knob Sk2 is
set to the very sensitive
position "60mV"; in this
position the protection is
cut out and the meter
cannot stand overload any
longer.
The
maximum
current is 30 µA.
