HoldPeak 39B Operator's Manual

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 "
resistance, diode or continuity test, on the voltage or current range, change
range, change to °C or °F test.
to DC or AC, on the
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/
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)
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.
39B
" range, press the key to choose
Input Jack
/
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: "
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
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
200mV 0.1mV
2V 1mV
20V 10mV
200V 100mV
600V 1V
-- Impedance: 10MΩ, More than 100MΩ on 200mV range
-- Overload protection: 600V DC or AC rms

6-2 AC Voltage

Range Resolution
2V 1mV
20V 10mV
200V 100mV
600V 1V
-- 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
200μA 0.1μA
2000μA 1μA
20mA 10μA
200mA 100μA
2A 1mA
10A 10mA
-- Overload protection: 500mA/500V Fast Fuse

6-4 AC Current

and
Range Resolution
200μA 0.1μA
2000μA 1μA
20mA 10μA
200mA 100μA
2A 1mA
10A 10mA
-- Overload protection: 500mA/500V Fast Fuse
-- Frequency Range: 40 to 400Hz
-- Response: average, calibrated in rms of sine wave
" displayed.
humidity <70%)
Accuracy
±(0.5% of rdg + 2 digits)
±(0.8% of rdg + 2 digits)
Accuracy
±(0.8% of rdg + 3 digits)
±(1.2% of rdg + 3 digits)
Accuracy
±(1.2% of rdg + 2 digits)
±(2.0% of rdg + 3 digits)
10A/500V Fast Fuse, 10A up to 10 seconds
Accuracy
±(1.5% of rdg + 3 digits)
±(2.5% of rdg + 5 digits)
10A/500V Fast Fuse, 10A up to 10 seconds