Prokit's Industries MT-2017 User Manual
Page 12
11
Decibels Measurement
1.
Set the selector switch to AC 10V range.
2.
Connect the BLACK test lead to the “-COM” jack and the
RED test lead to the Red “+” jack.
3.
Connect the test leads to the measuring circuit specially in
series with a 0.047μF/400V Metalized Polyester Capacitor.
And then read the bottom Red dB scale.
4.
For more dB scope, change the selector switch to the others
of ACV ranges and make the same actions. Add the
appropriate number of dB scale reading as noted on the
chart below.
NOTE: For absolute dB measurements, circuit impedance
must be 600 Ohm. 0 dB = 1mw dissipated in a 600 Ohm
impedance (equivalent to 0.755V across 600 Ohm)
ACV RANGE
ADD dB Number
50 14
250 28
1000 40
Capacitance Measurement with the optional accessory kit of
Item no. MT- 2007-C
WARNING: DO NOT APPLY VOLTAGE TO MEASURING
TERMINAL WHILE MAKING ANY CAPACITANCE
MEASUREMENTS.
BEFORE TESTING ANY CAPACITORS, DISCHARGE THE
CAPACITOR COMPLETELY.
BEFORE MEASUREMENTS, PLEASE READ THE
INSTRUCTIONS OF MT- 2007-C CAREFULLY.