Tektronix Type 130, Instruction Manual

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AA
2-1
General
No special operating precautions are necessary. The
instrument will withstand the usual amount of shock and
vibration that a meter movement can take, and any am-
bient temperature the operator is likely to tolerate.
First-Time Operation
Connect the power cord to a 117-volt 60 cycle source
and connect the probe plug to the UNKNOWN uhf con-
nector. Set the RANGE SELECTOR to 100
μμ
f. The ac power
switch energizes the pilot light, which indicates that the
instrument is getting power. Connect a ground lead between
the TYPE 130 and one end of the capacitance that you want
to measure.
Centre the FINE ZERO control with the index up, and
adjust the COARSE ZERO control so the meter reads zero.
Keep the index line above horizontal. Do not be con -
cerned if the meter goes off scale at any time. The maxi-
mum possible current through the meter movement is safe
for any settings of the controls. Let the instrument warm up
for a minute or two so that it can become stabilized.
Fig. 2-1. Capacitance measurement using Production Test Fixture.
Capacitance Measurement
First set the meter accurately on zero with the capa-
citance disconnected. You can connect the capacitance
you want to measure either directly at the instrument panel
or at the end of the probe. Tektronix Type F30 Production Test
Fixture (013-001) is an accessory that can be obtained for
measuring inductance and capacitance directly at the instru-
ment panel. It speeds sorting and testing of capacitors and
inductors. The probe cable introduces an additional 30
μμ
f
which the COARSE ZERO can easily compensate. Set the
COARSE ZERO control with the SELECTOR on 100 or 300
μμ
f and then switch to 3 or 10
μμ
f to set the FINE ZERO.
The meter needle will follow the beats below 10 cycles
so you will have am accurate zero setting when the needle
is at zero and not vibrating.
The percentage accuracy and resolution are better on
the upper parts of the scales so you should shift to the next
lower range where possible.
Fig. 2-2. Using the Type 130 L-C Meter to check inductance in a
circuit.