MFJ MFJ-200A Instruction Manual

1

INSTRUCTION MANUAL

CAUTION: Read All Instructions Before Operating Equipment

MFJ ENTERPRISES, INC.

300 Industrial Park Road

Starkville, MS 39759 USA

Tel: [phone] Fax: [phone]

COPYRIGHT 2016 MFJ ENTE RPRISES, INC.

Model MFJ-200A

VERSION 1A

Inductance/Capacitance Meter

2

INTRODUCTION

Congratulations on purchasing the MFJ-200A Inductance/Capacitancor Meter. The
Inductance/Capacitancor Meter is highly accurate, compact, rugged, self calibrating, and
super easy-to-use! The MFJ-200A delivers laboratory performance. The sophisticated
high-speed micro-controller allows it to compute unknown capacitance/inductance in
seconds. Here are some important features we think you'll like:

Multiple Ranges: Four selectable ranges:

• 0.01pF - 10uF

• 1uF - 100uF

• 0.001uH - 100mH

• .001mH - 100H.

Computation: High speed Microcontroller precision computation.
Power: Use four AA batteries (not included), 5.5mm DC AC adapter, or any USB source

with a mini-USB plug.
Sleep Mode: Intellectually shutdown in 5 min.

Just push power switch to resume testing.

Important Warnings:

Do not reset to “0” as components are being measured. If you do it, please shut down
immediately and restart, then reset to “0”.

Do not to measure a capacitance which is not discharged, otherwise it may damage the
mainframe.

3

MFJ-200A CONTROLS

Figure 1 MFJ-200A INDUCTANCE/CAPACITANCE METER

Front Panel Controls and Indicators

• Push button Zero switch (1) allows the user to reset to zero.

• Push button Hi.C switch (2) allows the user to calculate capacitance ranges.

o Button pushed out calculate capacitance ranges 1uF-100mF
o Button pushed in calculate capacitance ranges .01pF-10uF

• Push button Hi.L switch (3) allows the user to calculate inductance ranges.

o Button pushed out calculate inductance ranges 100mH-100H
o Button pushed in calculate inductance ranges .001-100mH

• Push button L/C switch (4) allows the user to select inductance or capacitance.

o Button pushed out capacitance C
o Button pushed in inductor L

• Push button Func switch (5) allows the user to see results in Hz.

o Button pushed reads results inHz
o Button released reads results

1

2

3

4

5

6

7