Mercury 1400 User Manual

3. Set the functien switch to. the proper range, either 2-40 Mfd. er
40-450 Mfd. depending en the value ef the electrolytic to. be
tested.
If the value is unknewn, try the higher range first, as the larger
values are mere cemmenly feund in TV sets and radies.
Ne harm can be dene if an electrelytic capacitor is tested en the
wrong range.
4. After
the test clips are cennected, rotate the main dial until the
indicater bars are at a minimum epening (barely teuching). The
peinter will then read the value (in microfarads) ef the electrolytic
capaciter.
Nete that a test fer SHORTS er fer OPENS may be made en an
electrolytic as well as en any ether capaciter. Hewever, if an
electrolytic capaciter shews a definite value in microfarads, it
is neither epen ner sherted, se ne further test is required.
5. If yeu cannet get the bars to. teuch, switch to. the ether electro-
lytic range and test fer value in exactly the same manner as de-
scribed in Step 4.
The ranges previded by the Model 1400 cever ever 99% ef all
elect rely tics in use teday.
6. Shunt resistances feund in mest electrelytic radio. and TV cir-
cuits are nermally high eneugh to. cause ne difficulty during
in-circuit testing.
6.
Where ne test can be ebtained en either range, check the sche-
matic diagram to. see if extremely lew shunt resistance is in
parallel with the electrelytic capaciter. Only en small capa-
citers (less than 10 Mfd.) is this cenditien to. be expected. In
such cases, an eut-ef-circuit test can readily be made by dis-
cennecting ene ef the capaciter leads.

Mercury 1400 Specifications

General

Brand	Mercury
Model	1400
Category	Test Equipment
Language	English