Jensen JTM-69A User Manual

User’s Guide

True RMS Digital Multimeter

Model JTM-69A

Introduction Jensen 69A

Congratulations on your purchase of Jensen’s JTM-69A true rms Digital
Multimeter. This autoranging meter measures AC/DC Voltage, AC/DC
Current, Resistance, Capacitance, Frequency, Duty Cycle, Temperature,
Diode Test and Continuity. Proper use and care of this meter will provide
many years of reliable service.

Safety

International Safety Symbols

Overvoltage Catagory III

This meter meets the IEC 610-1-95 standard for OVERVOLTAGE
CATEGORY III. Cat III meters are protected against overvoltage
transients in fixed installation at the distribution level. Examples include
switches in the fixed installation and some equipment for industrial use
with permanent connection to the fixed installation.

This symbol, adjacent to another symbol or terminal,
indicates the user must refer to the manual for further
information.

This symbol, adjacent to a terminal, indicates that, under
normal use, hazardous voltages may be present

Double insulation

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JTM-69A V2.0 10/07

Safety Precautions

1. Improper use of this meter can cause damage, shock, injury or
death. Read and understand this user manual before operating the
meter.

2. Make sure any covers or battery doors are properly closed and
secured.

3. Always remove the test leads before replacing the battery or fuses.

4. Inspect the condition of the test leads and the meter itself for any
damage before operating the meter. Repair any damage before
use.

5. Do not exceed the maximum rated input limits.

6. Use great care when making measurements if the voltages are
greater than 25VAC rms or 35VDC. These voltages are considered
a shock hazard.

7. Always discharge capacitors and remove power from the device
under test before performing Capacitance, Diode, Resistance or
Continuity tests.

8. Remove the battery from the meter if the meter is to be stored for
long periods.

9. To avoid electric shock, do not measure AC current on any circuit
whose voltage exceeds 250V AC.

10. Voltage checks on electrical outlets can be difficult and misleading
because of the uncertainty of connection to the electrical contacts.
Other means should be used to ensure that the terminals are not
"live".

Function Maximum Input
V DC, VAC 1000V DC/ 600V AC
Ohms, Capacitance, Diode,
Frequency, Continuity
mA DC/AC 400mA DC/AC
10A DC/AC 10A DC/AC (30seconds max

Input Limits

250V DC/AC

every 15 minutes)

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JTM-69A V2.0 10/07

Specifications

Function Range Resolution Accuracy
DC Voltage

AC Voltage
50/60Hz

DC Current

AC Current
50/60Hz

Resistance

400mV 0.1mV
4V 0.001V
40V 0.01V
400V 0.1V
600V 1V
400mV 0.1mV
4V 0.001V
40V 0.01V
400V 0.1V
600V 1V
400μA 0.1μA
4000μA 1μA
40mA 0.01mA
400mA 0.1mA
10A 0.01A
400μA 0.1μA
4000μA 1μA
40mA 0.01mA
400mA 0.1mA
10A 0.01A
400Ω 0.1Ω ±(1.0% reading + 4 digits)
4kΩ 0.001kΩ ±(1.0% reading + 2 digits)
40kΩ 0.01kΩ
400kΩ 0.1kΩ
4MΩ 0.001MΩ
40MΩ 0.01MΩ ±(2.0% reading + 5 digits)

±(0.5% reading + 2 digits)

±(1.0% reading + 2 digits)

±(1.5% reading + 2 digits)
±(1.0% reading + 70 digits)
±(1.0% reading + 3 digits)

±(1.2% reading + 3 digits)
±(2.0% reading + 4 digits)

±(1.5% reading + 3 digits)

±(2.5% reading + 5 digits)

±(1.8% reading + 5 digits)

±(3.0% reading + 7 digits)

±(1.2% reading + 2 digits)

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JTM-69A V2.0 10/07

Capacitance

4nF 0.001nF
40nF 0.01nF
400nF 0.1nF
4μF 0.001μF
40μF 0.01μF

±(5.0% reading + 10digits)
±(5.0% reading + 7 digits)
±(3.0% reading + 5 digits)

±(3.5% reading + 5 digits)

200μF 0.1μF ±(5.0% reading + 5 digits)

Frequency

9.999Hz 0.001Hz

99.99Hz 0.01Hz

±(1.5% reading + 5 digits)

999.9Hz 0.1Hz

9.999kHz 0.001kHz

99.99kHz 0.01kHz

±(1.2% reading + 2 digits)

999.9kHz 0.1kHz

9.999MHz 0.001MHz

±(1.5% reading + 4 digits)

Sensitivity: 0.8V rms min. @ 20% to 80% duty cycle
and <100kHz; 5Vrms min @ 20% to 80% duty cycle

and > 100kHz.
Function Range Resolution Accuracy
Duty Cycle 0.1 to 99.9% 0.1%

±(1.2% reading + 2 digits)
Pulse width: 100μs - 100ms

Frequency: 5Hz to 150kHz
Temp °F -4 to 1400°F 1°F
Temp °C -20 to 760°C1°C

±(3.0% reading + 3 digits)

(meter only, probe accuracy

not included)

NOTE: Accuracy is stated at 65

o

F to 83oF (18oC to 28oC) and less than

70% RH.

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JTM-69A V2.0 10/07