HoldPeak 36C Operator’s manual

36C

DMM OPERATOR’S MANUAL

1.

Overview

The multimeter is characterized at slim size, portable, stable performance and anti-dropping capacity. Using 3½ digits LCD monitor with character 16mm 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, capacitor, battery positive diode voltage fall, hfe parameters for transistor and Continuity.

2. Panel Layout

① LCD Display: 3½ digits, character 16mm high

② Data-hold Switch (HOLD)

③ Back Light Button Switch: Press this button to switch on back light If the dark circumstance light makes the reading difficulty when measuring, the light will be automatically turned off in 5 seconds. Press again to switch it on again.

If the battery is in weak power, the light will be dimmed.

④ Rotary Switch: use this switch to select functions and ranges

⑤ V Ω mA Cx+ Input Jack 、 Cx- Input Jack 、 COM Input Jack

3. Safety Information

3-1 The meters are designed according to IEC-1010 concerning electronic measuring instruments with an over-voltage category (CAT Ⅱ ) 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 avid 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 ot measuring voltage higher than DC 60V & AC 30V.

4-8 Protection fuse should be replaced only with same type and same specification.

5. GENERAL SPECIFICATIONS

5-1 Max Voltage between input terminal and Earth Ground: CAT Ⅱ 600V

5-2 Over-range Indication: display “1” for the significant digit.

5-3 Automatic display of negative polarity “_” .

5-4 Low Battery Indication: „ ‟ displayed

5-5 Max LCD display: 1999 (31/2 digits)

5-6 Fuse protection: F-200mA/250V (Ø 5x20mm)

5-7 Power Supply: 9V battery, 6F22 or NEDA 1604

5-8 Operating Temp.: 0 ℃ to 40 ℃ (relative humidity <85%)

5-9 Storage Temp.:-10 ℃ to 50 ℃ ((relative humidity <85%)

5-10 Guaranteed precision Temp.: 23 ± 5 ℃ (relative humidity <85%)

5-11 Dimension: 143x75x32mm

5-12 Weight: approx. 200g (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 75%.

6-1

DC Voltage

range resolution

200mV

20V

0.1mV

10mV accuracy

± (0.5% of rdg + 17 digit )

± (0.8% of rdg +18 digits)

600V 1V ± (0.8% of rdg + 18 digits)

-- Input Impendence: 10M Ω

- Overload protection: 250V for 200mV range, effective DC or AC 600V for other ranges

6-2 AC Voltage

range

200V resolution

100mV

600V 1V accuracy

± (1.2% of rdg + 20 digits)

± (1.2% of rdg +20 digits)

-- Frequency Range: 40 to 400Hz

-- Response: average, calibrated in rms of sine wave

6-3 DC Current

range Resolution accuracy

200mA 100μA ± (1.5% of rdg +20 digits)

10A 10mA ± (3.0% of rdg +20 digits)

-- Overload protection: F 200mA/250V fuse 10A up to 10 seconds

6-4 AC Current

range Resolution accuracy

200mA 100μA ± (1.8% of rdg +20 digits)

10A 10mA

10A up to 10 seconds

6-5 Resistance

range Resolution

200 Ω

2kΩ

0.1

Ω

1Ω

± (3.5% of rdg +25 digits) accuracy

± (1.5% of rdg + 25 digits)

±(0.8% of rdg +20 digits )

±(0.8% of rdg +20 digits ) 20kΩ 10Ω

2MΩ 1kΩ ±(2.0% of rdg +25 digits )

-- over-load protection: 250V effective value

6-6 Transistor hFE Test

range Test Range Test Current / voltage

NPN & PNP 0-1000 Ib=10 μ A / Vce=3V

6-7 Diode Test

range resolution Function

1mV Display: read approximate forward voltage of diode

-- over-load Protection: 250V effective value

-- forward DC current: approximate 1mA

-- Reversed DC voltage: approximate 3.0V

6-8 Continuity

range Function

Built-in buzzer will sound if resistance is lover than 50 Ω

-- over-load protection: 250V effective value

 open circuit voltage: approximate 3.0V

6-9

Capacitor range resolution accuracy

20 μ F

0.01

μ F-10 μ F 0.01

μ F ± (2.5% of rdg + 30 digits)

10 μ F-20 μ F 0.01

μ F ± (9.0% of rdg + 40 digits)

-- over-load protection: 250V effective value

6-10 Battery

range

Load resistance

1.5V

9V

12V

36Ω

360Ω

450Ω battery by test is good more than 33mA. more than 18mA. more than 14mA.

7. OPERATING INSTRUCTIONS

7-1 Attention before operation

7-1-1 Check 9V battery. If the battery voltage is less than 7V, display will show

“ ”, the battery should be replaced at this time to ensure measuring precision.

7-1-2 Pay attention to the “ ” besides the input jack which shows that the input voltage or current should be within the specified value.

7-1-3 The range switch should be positioned to desired range for measurement before operation.

7-2 Measuring DC Voltage

7-2-1 Connect the black test lead to COM jack and the red to V Ω mA jack.

7-2-2 Set the rotary switch at the desired V range position.

7-2-3 Connect test leads across the source or load under measurement.

7-2-4 You can get reading from LCD. The polarity of the red lead connection will be indicated along with the voltage value.

NOTE:

1. When the value scale to be measured is unknown beforehand, set the range selector at the highest position.

2.

When only the figure‟1‟ or „-1‟ is displayed, it indicates over-range situation and the higher range has to be selected.

3.

“ ” means you can‟t input the voltage more than 600V, it‟s possible to show higher voltage, but it may destroy the inner circuit or pose a shock.

4.

Be cautious against shock when measuring high Voltage.

7-3 Measuring AC Voltage

7-3-1 Connect the black test lead to COM jack and the red to V Ω mA jack.

7-3-2 Set the rotary switch at the desired V~ range position.

7-3-3 Connect test leads across the source or load under measurement.

7-3-4 You can get reading from LCD.

NOTE:

1. When the value scale to be measured is unknown beforehand, set the range selector at the highest position.

2.

When only the figure‟1‟ or „-1‟ is displayed, it indicates over-range situation and the higher range has to be selected.

3.

“ ” means you can‟t input the voltage more than 600V, it‟s possible to show higher voltage, but it may destroy the inner circuit or pose a shock.

4. Be cautious against shock when measuring high Voltage.

7-4 Measuring DC/AC Current

7-4-1 Connect the black test lead to COM jack and the red to the V Ω mA jack for a maximum 200mA current,

7-4-2 Set the rotary switch at the desired A /A ~ range position.

7-4-3 Connect test leads in series with the load under measurement.

7-4-4 You can get reading from LCD. The polarity of the red lead connection will be indicated along with the current value.

NOTE:

1. When the value scale to be measured is unknown beforehand, set the range selector at the highest position.

2. When only the figure‟1‟ or „-1‟ is displayed, it indicates over-range situation and the higher range has to be selected.

3.

“ ” means the socket mA‟s maximum current is 200mA and 10A‟s maximum current is 10A, over current will destroy the fuse. Since 10A is not fused, the measuring time should be less than 1 second to prevent precision from affecting by circuit heating.

7-5 Measuring Resistance

7-5-1 Connect the black test lead to COM jack and the red to V Ω mA jack.

7-5-2 Set the rotary switch at the desired Ω range position.

7-5-3 Connect test leads across the resistance under measurement.

7-5-4 You can get reading from LCD.

NOTE:

1. When only the figure‟1‟ or „-1‟ is displayed, it indicates over-range situation and the higher range has to be selected.

2. For measuring resistance above 1M Ω , the mete may take a few seconds to get stable reading.

3. When the input is not connected, i.e. at open circuit, the figure „1‟ will be displayed for the over-range condition.

4. When checking in-circuit resistance, be sure the circuit under test has all power removed and that all capacitors have been discharged fully.

5. the value scale to be measured is unknown beforehand, set the range selector at the highest position.

7-6 Transistor Testing

7-6-1 Set the rotary switch at ‟hFE‟ position.

7-6-2 Determine whether the transistor under testing is NPN or PNP and locate the emitter, base and collector leads. Insert the leads into proper holes of hFE socket on the front panel.

7-6-3 Read the approximate hFE value at the testing condition of base current

Ib10uA and Vce 3V.

7-7 Diode Testing

7-7-1 Connect the black test lead to COM jack and the red to V Ω mA jack. (the polarity of red lead is „+‟.

7-7-2 Set the rotary switch at the F range position.

7-7-3 Connect the red lead to the anode and the black lead to the cathode of the diode under testing.

7-7-4 You can get a reading from LCD.

NOTE:

1. The meter will show approximate forward voltage drop of the diode.

2. If the lead connections is reversed, only „1‟ will be displayed.

7-8 Continuity Testing

7-8-1 Connect the black test lead to COM jack and the red to V Ω mA jack.

7-8-2 Set the rotary switch at the range position.

7-8-3 Connect test leads across two points of the circuit under testing.

7-8-4 If continuity exists (i.e. resistance less than about 50 Ω ), built-in buzzer will sound.

NOTE:

If the input open circuit, the figure „1‟ will be displayed.

7-9 Measuring Capacitor

7-9-1 Connect the black test lead to Cx- jack and the red to Cx+ jack.

7-9-2 Set the rotary switch at the desired 20uF/200nF range position.

7-9-3 Before inserting capacitor under measurement into capacitance testing socket, be sure that the capacitor has been discharged fully.

7-9-4 You can get reading from LCD.

7-10 Measuring Battery

Load resistance 1.5V range: 36Ω 9V range: 360Ω 12V range: 450Ω

7-10-1 The 1.5V battery by test is good when the display is more than 33mA.

7-10-2 The 9V battery by test is good when the display is more than 18mA.

7-10-3 The 12V battery by test is good when the display is more than 14mA.

8. Maintenance

8-1 Before attempting to remove the battery door or open the case, be sure that test leads have been disconnected from measurement circuit top avoid electric shock hazard.

8-2 To avoid electrical shock, remove test leads from measurement circuits before replacing the fuse. For protection against fire, replace fuses only with specified ratings: F-200mA/250V fuse.

8-3 Your must replace the test leads if the lead is exposed, and should adopt the leads with the same specifications as origin.

8-4 Use only moist fabric or small amount of detergent but not chemical solution for cleaning.

8-5 do not use the meter before the back cover is properly closed and screw secured. Upon any abnormality, stop operation immediately and send the meter for maintenance.

8-6 Please take out the battery when not using for a long time.

9. Accessories

[1] Test Leads: electric rating 600V 10A

[2] Fuse: F-200mA/250V

[3] Operator‟s Manual