
TEST EQUIPMENT 203
prime requirements of an analogue multimeter is that it should have a
high sensitivity. The sensitivity of an analogue multimeter can be express-
ed in two ways: one of these involves specifying the full-scale deflection
current of the moving coil meter (typically 50 μΑ, or less) while the other
involves quoting an Ohms per volt' rating. This latter specification is, in
effect, the resistance presented by the meter when switched to the
1
V d.c.
range.
The Ohms per volt' (Ω/V) rating is inversely proportional to the basic
full-scale sensitivity of the meter movement and, to determine the resistance
of the meter on any particula ...