HoldPeak 39B - User Manual

39B
DIGITAL MULTIMETER
OPERATOR’S MANUAL
1. Overview
The multimeter is characterized at slim size, portable, stable performance and
anti-dropping capacity. Using 4000 counts digit LCD monitor with character
25mm high, they offer clear readings. With overall circuitry design centering on
large-scale IC A/D converters in conjunction and over-load protection circuit, the
meters give excellent performance and exquisite making as a handy utility
instrument.
The meters can be used to measure DC & AC voltage, DC & AC current,
resistance, temperature, battery test, positive diode voltage fall and audible
continuity.
2. Panel Layout
1. Test lead fixture: Fix the test lead.
2. Battery test green light: the green light show the battery being tested is good,
it can continue to be used.
3. Battery test yellow light: the yellow light show the battery being tested is close
to bad, it can be used but need to changed as quickly as possible.
4. Battery test red light: the red light show the battery being tested is bad, it can
not continue to be used.
5. LCD display: 3 1/2 digits LCD display, full function symbol display.
6. SELECT key: This key work on the " " range, press the key to choose
resistance, diode or continuity test, on the voltage or current range, change
to DC or AC, on the range, change to °C or °F test.
7. RANGE Key: Press the “RANGE” key, the meter enters manual range mode,
press it more than 2 seconds again, return to auto mode.
8. Key: Press the “ ” key over 2 seconds to light the back light, press it
again for more than 2 seconds to lights off it, it can lights off automatically after
15 seconds too.
9. M.HOLD key: Press the “M.HOLD” key to lock MAX value, and the “M.HOLD”
sign will appear on the display, press it again to exit. If press and hold the
“M.HOLD” key to power on, “Auto Power Off ” function will be disabled.
10. D.HOLD key: Press the “D.HOLD” key to lock display value, and the
“D.HOLD” sign will appear on the display, press it again to exit.
11. Rotary Switch: Use this switch to select functions and ranges.
12. COM: COM and Temperature “-” Input Jack
13. 10A: 10A Input Jack
14. VΩmA: V/μAmA/ BATT/ / Input Jack
15. Crust of meter
16. Protective casing
3. Safety Information
3-1 The meter is designed according to IEC-1010 concerning electronic
measuring instruments with an over-voltage category 600V (CAT Ⅲ) and
pollution 2.
3-2 Follow all safety and operating instructions to ensure that the meter is used
safely and is kept in good operating condition.
3-3 safety symbols:
Important safety information, refer to the operating manual.
Dangerous voltage may be presence.
Double insulation (protection Class II)
4. Special Cautions for Operation
4-1 The meters can be safe only according to standard procedures when used in
conjunctions with the supplied test leads. To replace damaged test leads with
only the same model or same electric specifications.
4-2 To avoid risk of electric shock, do not use the meters before the cover is
in place.
4-3 The range switch should be right position for the testing.
4-4 To avoid electric shock and damaging the instruments, the input signals are
forbidden to exceed the specified limits.
4-5 When measuring TV set or switched power, attention should be paid to the
possible pulses that may bring destruction to the circuit.
4-6 Range switch position is forbidden to be changed at random during
measurement.
4-7 Take caution against shock in the course of measuring voltage higher than
DC 60V & AC 30V.
4-8 Protection fuse should be replaced only with same type and same
specification.
4-9 After operation is finished, set function switch at OFF to save battery power.
4-10 If the meter is without usage for long time, take out battery to avoid damage
by battery leakage.
5. GENERAL SPECIFICATIONS
5-1 Max Voltage between input terminal and Earth Ground: CAT Ⅲ 600V
5-2 Over-range Indication: display “OL” for the significant digit.
5-3 Automatic display of negative polarity “-” .
5-4 Low Battery Indication: “ ” displayed.
5-5 Display: 3 1/2 digit LCD with a max. reading of 1999.
5-6 Auto range control
5-7 Auto Power Off: When measurement exceeds 15 minutes without switching
mode and pressing key, the meter will switch to standby mode. Press any
key to exit standby mode. When restart the system, press and hold M.HOLD
key to disable auto power off.
5-8 Fuse protection: 500mA/500V Fast Fuse, 10A/500V Fast Fuse
5-9
Power supply: 9V 6F22 battery
5-10 Operating Temp.: 0℃ to 40℃ (relative humidity <85%)
5-11 Storage Temp.: -10℃ to 50℃ (relative humidity <85%)
5-12 Guaranteed precision Temp.: 23±5℃ (relative humidity <70%)
5-13 Dimension: 150x100x36mm
5-14 Weight: approx. 250g (including battery)
6. Testing Specifications
Accuracy is specified for a period of year after calibration and at 18 ℃ to
28 ℃ (64℉ to 82℉) with relative humidity to 70%.
6-1
DC Voltage
Range
Resolution
Accuracy
200mV
0.1mV
±(0.5% of rdg + 2 digits)
2V
1mV
20V
10mV
200V
100mV
600V
1V
±(0.8% of rdg + 2 digits)
-- Impedance: 10MΩ, More than 100MΩ on 200mV range
-- Overload protection: 600V DC or AC rms
6-2 AC Voltage
Range
Resolution
Accuracy
2V
1mV
±(0.8% of rdg + 3 digits)
20V
10mV
200V
100mV
600V
1V
±(1.2% of rdg + 3 digits)
-- Impedance: 10MΩ
-- Overload protection: 600V DC or AC rms
-- Frequency Range: 40 to 400Hz
-- Response: average, calibrated in rms of sine wave
6-3 DC Current
Range
Resolution
Accuracy
200μA
0.1μA
±(1.2% of rdg + 2 digits)
2000μA
1μA
20mA
10μA
200mA
100μA
2A
1mA
±(2.0% of rdg + 3 digits)
10A
10mA
-- Overload protection: 500mA/500V Fast Fuse
10A/500V Fast Fuse, 10A up to 10 seconds
6-4 AC Current
Range
Resolution
Accuracy
200μA
0.1μA
±(1.5% of rdg + 3 digits)
2000μA
1μA
20mA
10μA
200mA
100μA
2A
1mA
±(2.5% of rdg + 5 digits)
10A
10mA
-- Overload protection: 500mA/500V Fast Fuse
10A/500V Fast Fuse, 10A up to 10 seconds
-- Frequency Range: 40 to 400Hz
-- Response: average, calibrated in rms of sine wave

Summary

Overview

Panel Layout

Safety Information

Safety Symbols

Explains safety symbols used in the manual for user guidance and risk awareness.

Special Cautions for Operation

General Specifications

Testing Specifications

DC Voltage

Specifies ranges, resolution, accuracy, impedance, and overload protection for DC voltage measurements.

AC Voltage

Details ranges, resolution, accuracy, impedance, frequency, and response for AC voltage measurements.

DC Current

Lists ranges, resolution, accuracy, and overload protection for DC current measurements.

AC Current

Specifies ranges, resolution, accuracy, overload protection, frequency, and response for AC current.

Resistance

Provides specifications for resistance measurement including ranges, resolution, and accuracy.

Temperature

Details specifications for temperature measurement using a K-type sensor.

Battery test

Outlines specifications for testing 1.5V, 6V, 9V, and 12V batteries with LED indicators.

Diode and Audible continuity test

Specifies conditions for diode forward voltage testing and audible continuity buzzer activation.

Operating Instructions

Attention before operation

Covers initial checks, input jack warnings, and range switch positioning before measurements.

Measuring DC & AC Voltage

Guides on connecting leads and setting the rotary switch for DC and AC voltage measurements.

Measuring DC & AC Current

Explains lead connection for current measurement and rotary switch settings for DC/AC.

Measuring Resistance

Instructs on connecting leads and setting the rotary switch for resistance measurements.

Battery Testing

Details lead connection and rotary switch settings for testing various battery types.

Diode & Audible continuity Testing

Guides on selecting range, connecting leads, and interpreting results for diode and continuity tests.

Battery replacement

Fuse replacement

Maintenance

Accessories

HoldPeak 39B Specifications

General

Type	Digital Multimeter
Temperature Range	-20°C to 1000°C
Diode Test	Yes
Continuity Buzzer	Yes
Battery	9V (6F22)
Display	LCD
Measurement Functions	AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency, Temperature, Diode Test, Continuity
Capacitance Range	20nF to 200µF