MX 430B
28
3.3.2
3.3.2
3.3.2
3.3.2
3.3.2 W Function
Function
Function
Function
Function
1) Leads plugged into : - COM and mA V /
kW
/ W sockets
2) Make sure that there is no voltage across the resistance to be tested
3) Linear ohmmeter
Linear ohmmeter
Linear ohmmeter
Linear ohmmeter
Linear ohmmeter (protected through thermistor and varistor from any
accidental connection to 240 V AC)
With the 500 W
one can mesure the direct junction voltage of a semi-
conductor connected as follows :
- COM
mA V kW / W . Constant curent 3 mA : read up to 1.5 V on black
scale 150 (V : 100).
N. B.
N. B.
N. B.
N. B.
N. B. : Linear scale (L. H. of the scale the pointer deflects to the right as a
function of resistance up to 50 or 500 W with input open
(R
) the pointer will fly to the R.H.S. of the
scale.
Warning
Warning
Warning
Warning
Warning : Do not leave the selector at 50 or 500 W with nothing at input.
4) Logarithmic ohmmeter
Logarithmic ohmmeter
Logarithmic ohmmeter
Logarithmic ohmmeter
Logarithmic ohmmeter
Short the leads prods. Turn the W control to set the pointer to 0 W (green scale)
with the function selector at W .
Selector to
Selector to
Selector to
Selector to
Selector to
50 W
500 W
Read on scale
Read on scale
Read on scale
Read on scale
Read on scale
50
50
from
from
from
from
from
W x 1
W x 10
from
from
from
from
from
0.1 kW up to 200 kW
10 kW up to 20 MW
Read on green scale
Read on green scale
Read on green scale
Read on green scale
Read on green scale
kW
green
Selector to
Selector to
Selector to
Selector to
Selector to
kW x 1
kW x 100
5) If the pointer does not deflect check 10 A fuse
Summary of Contents for MX 430B
Page 38: ...MX 430B 36...
Page 59: ...MX 430B 57...
