Digital Multimeter PDMT25 - Multimeter Pyle - Free user manual and instructions

Product Type	Digital Multimeter
Brand	Pyle
Model	PDMT25
Dimensions	Approximately 7.0 x 3.5 x 1.5 inches
Weight	About 0.5 lb (including battery)
Power Supply	1 x 9V battery (NEDA 1604A)
Display	LCD with 2000 counts
DC Voltage Range	200mV, 2V, 20V, 200V, 600V
AC Voltage Range	2V, 20V, 200V, 600V
DC Current Range	200μA, 2mA, 20mA, 200mA, 10A
Resistance Range	200Ω, 2kΩ, 20kΩ, 200kΩ, 2MΩ, 20MΩ
Diode Test	Yes
Continuity Test	Yes (buzzer)
Transistor Test	Yes (hFE)
Backlight	Yes
Data Hold	Yes
Low Battery Indication	Yes
Safety Rating	CAT II 600V
Operating Temperature	32°F to 104°F (0°C to 40°C)
Storage Temperature	14°F to 122°F (-10°C to 50°C)
Accessories Included	Test leads, 9V battery, user manual
Maintenance	Clean with a damp cloth; avoid solvents; replace battery when low.
Spare Parts Availability	Standard 9V battery and common test leads; contact Pyle support for specifics.

Frequently Asked Questions - Digital Multimeter PDMT25 Pyle

How do I measure DC voltage with the Pyle PDMT25?

Set the rotary switch to the DC voltage range (V with straight lines). Connect the black lead to COM and red lead to V/Ω/Hz. Touch the probes to the circuit and read the display. Start with the highest range if unsure.

What type of battery does the PDMT25 use?

It uses a standard 9V battery (NEDA 1604A). Replace when the low battery indicator appears.

How do I test continuity?

Turn the dial to the continuity position (usually a diode/sound icon). Insert the leads as for voltage. Touch the probes together; you should hear a beep. Then test your circuit; a beep indicates a continuous path.

Can I measure AC current?

Yes, but only up to 10A. Set the dial to the AC current range (A with wavy line). For currents above 200mA, use the 10A jack; otherwise use the V/Ω/Hz jack. Always start with the highest range.

What is the maximum voltage this multimeter can measure?

The maximum DC and AC voltage is 600V. Do not exceed this rating to avoid damage or injury.

How do I use the data hold function?

Press the 'HOLD' button during measurement to freeze the display. Press again to release. This is useful for capturing readings in difficult positions.

Why does the display show 'OL'?

'OL' means overload. The measured value exceeds the selected range. Switch to a higher range to get a reading.

Is the PDMT25 safe for home use?

Yes, it is rated CAT II 600V, making it suitable for household circuits. However, always follow safety precautions: use the correct range, inspect leads, and avoid working on live circuits above 60V DC or 30V AC without proper training.

How do I clean the multimeter?

Turn off and remove the battery. Wipe the exterior with a soft, damp cloth. Do not use chemicals or abrasives. Ensure it is dry before use.

What does the hFE function do?

It tests the DC current gain of transistors. Insert the transistor into the hFE socket (emitter, base, collector) and read the hFE value on the display. The range is typically 0-1000.

USER MANUAL Digital Multimeter PDMT25 Pyle

OPERATING INSTRUCTIONS AUTORANGING DIGITAL MULTIMETER

PDMT25

www.pyleaudio.com

SAFETY WARNINGS

The following safety information must be observed to insure maximum personal safety during the operation at this meter:

- Measurements beyond the maximum selected range must not be attempted.

- Extreme care must be taken when measuring above 50 V, especially on live bus-bars.

- To measure voltage, the instrument must not be switched to a current or resistance range, or to the diode check or buzzer position.

- Circuits must be de-energised and isolated before carrying out resistance tests.

- The rotary selector switch must only be turned after removing test connections.

- All external voltages must be disconnected from the instrument before removing the battery.

- Test leads and prods must be in good order, clean, and with no broken or cracked insulation.

- UK Safety Authorities recommend the use of fused test leads when measuring voltage on high energy systems.

• Replacement fuses must be of the correct type and rating.
• The instrument must not be used if any part of it is damaged.
• Warnings and precautions must be read and understood before an instrument is used. They must be observed during the operation of this instrument.

Symbols used on this instrument are:

Caution: refer to accompanying notes.

This symbol indicates that the operator must refer to an explanation in the Operating Instructions to avoid personal injury or damage to the meter.

Caution: risk of electric shock

This WARNING symbol indicates a potentially hazardous situation, which if not avoided, could result in death or serious injury.

This CAUTION symbol indicates a potentially hazardous situation, which if not avoided, may result damage to the product.

This symbol advises the user that the terminal(s) so marked must not be connected to a circuit point at which the voltage with respect to earth ground exceeds (in this case) 1000 VAC or VDC.

Equipment protected throughout by Double Insulation (Class II)

Equipment complies with current EU directives.

SYMBOLS AND ANNUNCIATORS

•))))

Continuity

BAT

Low

Battery

Diode

test

HOLD

Data

Hold

AUTO

AutoRanging

AC Alternating Current or Voltage

DC Direct Current or Voltage

MAX/MIN Stores the highest or lowest measurement

PEAK Find glitches and transients without a scope

Backlight

V

Volts

A, mA, uA

Current range

OPERATION

To turn on the instrument turn the range knob from the OFF position to any measurement range.

Note:

For best battery life ALWAYS turn the function switch to the OFF position when the meter is not in use. This meter has Auto OFF that automatically shuts the meter OFF if 30 minutes elapse between uses.

NOTE: On some low AC and DC voltage ranges, with the test leads not connected to a device, the display may show a random, changing reading. This is normal and is caused by the high-input sensitivity. The reading will stabilize and give a proper measurement when connected to a circuit.

MODE button

To select AC or DC measurement when in Voltages, Amps, mA, uA, Ω, ▶+, •)) ) , °C or °Franges.

HOLD button

The HOLD function allows the meter to "freeze" a

measurement for later reference.

1. Press the HOLD button to “freeze” the reading on the indicator. The “HOLD” message will be appear in the display.
2. Press the HOLD button again to return to normal operation.

BACKLIGHT button

1. Press the BACKLIGHT button to switch on the display light.
2. Press BACKLIGHT button again to exit the light mode.

MAX/MIN button

The MAX/MIN function allows the meter to capture the highest or lowest measurement for later reference.

1. Press the MAX/MIN button to begin measurement. The indicator “MAX” or MIN will appear in the display.
2. If the “MAX MIN” messages are flashing, the instrument is in MAX/MIN mode but not recording, press the MAX/MIN button to select a mode.
3. To return to normal AUTO measurement mode, hold down the MAX/MIN button for 2 seconds.

Peak Hold button

The Peak Hold function captures the peak AC or DC voltage or current. The meter can capture negative or positive peaks as fast as 1 millisecond in duration.

1. Turn the function switch to the A or V position.
2. Use the MODE button to select AC or DC.
3. Allow time for the display to stabilize.
4. Press and Hold the PEAK button until "CAL" appears in the display. This procedure will zero the range selected.
5. Press the PEAK button, Pmax will display.
6. The display will update each time a higher positive peak occurs.
7. Press the PEAK button again, Pmin will display. The display will now update and indicate the lowest negative peak.
8. To return to normal operation, press and hold the PEAK button until the Pmin or Pmax indicator switches off.

Note: If the Function switch position is changed after a calibration the Peak Hold calibration must be repeated

for the new function selected.

RANGE button

When the meter is first turned on, it automatically goes into AutoRanging. This automatically selects the best range for the measurements being made and is generally the best mode for most measurements. For measurement situations requiring that a range be manually selected, perform the following:

1. Press the RANGE button. The “Auto Range” display indicator will turn off, The “Manual Range” display indicator will turn on
2. Press the RANGE button to step through the available ranges until you select the range you want.
3. Press and hold the RANGE button for 2 seconds to exit the ManualRanging mode and return to AutoRanging.

4.

DC/DC VOLTAGE MEASUREMENT

1. sert the black test lead into the negative COM terminal and the red test lead into the positive V terminal.
2. Set the function switch to the V_AC or V_DC position.
3. Use the MODE button to select AC or DC Voltage
4. Connect the test leads in parallel to the circuit under test.
5. Read the voltage measurement on the LCD display

DC CURRENT MEASUREMENT

1. Insert the black test lead banana plug into the negative (COM) jack.
2. For current measurements up to 4000uA DC, set the function switch to the uA position and insert the red test lead banana plug into the (uA) jack.
3. For current measurements up to 400mA DC, set the function switch to the mA range and insert the red test lead banana plug into the (mA) jack.
4. For current measurements up to 10A DC, set the function switch to the A position and insert the red

test lead banana plug into the 10A jack.

1. Press the AC/DC button until “DC” appears in the display.
2. Remove power from the circuit under test, then open up the circuit at the point where you wish to measure current.
3. Touch the black test probe tip to the negative side of the circuit. Touch the red test probe tip to the positive side of the circuit.
4. Apply power to the circuit.
5. Read the current in the display. The display will indicate the proper decimal point, value and symbol.

AC CURRENT MEASUREMENT

1. Insert the black test lead plug into the negative (COM) socket.
2. For current measurements up to 10A, set the function switch to the A position and insert the red test lead plug into the (10A) jack.
3. For current measurements up to 400mA, set the function switch to the mA range and insert the red test lead banana plug into the (mA) jack.
4. For current measurements up to 10A AC, set the function switch to the A position and insert the red test lead banana plug into the 10A jack.
5. Press the MODE button. The measurement mode will change between AC or DC as required.
6. Remove power from the circuit under test, then open up the circuit at the point where you wish to measure current.
7. Touch the black test probe tip to the negative side of the circuit. And touch the red test probe tip to the positive side of the circuit.
8. Apply power to the circuit.
9. Read the current in the display. The display will

indicate the proper decimal point, value and symbol.

RESISTANCE [Ω] MEASUREMENT

WARNING: To avoid electric shock, disconnect power to the unit under test and discharge all capacitors before taking any resistance measurements. Remove the batteries and unplug the line cords.

1. Set the function switch to the position.
2. Insert the black test lead plug into the negative (COM) socket and the red test lead plug into the positive jack.
3. Press the MODE button until “Ω” appears in the display.
4. Touch the test probe tips across the circuit or part under test. It is best to disconnect one side of the part under test so the rest of the circuit will not interfere with the resistance reading.
5. Read the resistance in the display. The display will indicate the proper decimal point, value and symbol.

CONTINUITY CHECK

WARNING: To avoid electric shock, never measure continuity on circuits or wires that have voltage on them.

1. Set the range switch to the •))) position.
2. Insert the black lead plug into the COM socket and the red test lead plug into the positive •))) socket.
3. Press the MODE button until “•)))” appears in the display.
4. Touch the test probe tips to the circuit or wire you wish to check.
5. If the resistance is less than 35 , the audible signal will sound. The display will also show the actual resistance in ohms.

DIODE TEST

WARNING: To avoid electric shock, do not test any diode that has voltage on it.

1. Set the function switch to the position.
2. Insert the black test lead plug into the COM socket and the red test lead plug into the ▶ socket.
3. Press the MODE button until “▶” appears in the display.
4. Touch the test probe tips to the diode or semiconductor junction you wish to test. Note the meter reading.
5. Reverse the probe polarity by switching probe position. Note this reading.
6. The diode or junction can be evaluated as follows:

A. If one reading shows a value and the other reading shows OL, the diode is good.
B. If both readings show OL, the device is open.
C. If both readings are very small or zero, the device is shorted.

NOTE: The value indicated in the display during the diode check is the forward voltage.

CAPACITANCE MEASUREMENT

WARNING: To avoid electric shock, discharge the capacitor under test before measuring.

1. Set the function switch to the CAP capacitance position.
2. Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the CAP positive jack.
3. Touch the test probe tips across the part under test.
4. Read the capacitance value in the display.
5. The display will indicate the proper decimal point and value.

Note: For very large values of capacitance measurement time can be several minutes before the final reading stabilizes. The bar graph is disabled in capacitance measurement mode. The LCD displays DIS. C .Discharging through the chip is quite slow. We recommend the user to discharge the capacitor with some other apparatus.

FREQUENCY MEASUREMENT

1. Set the function switch to the Hz position.
2. Insert the black test lead banana plug into the negative (COM) jack and the red test lead banana plug into the positive Hz jack.
3. Touch the test probe tips to the circuit under test.
4. Read the frequency in the display. The digital reading will indicate the proper decimal point, symbols (kHz, MHz) and value.

TEMPERATURE MEASUREMENT

1. Set the function switch to the Type K °F or °C position.
2. Insert the Temperature Probe into the input jacks, making sure to observe the correct polarity.
3. Press the MODE button until “°F or °C” appears in the display.

4. Touch the Temperature Probe head to the part whose temperature you wish to measure. Keep the probe touching the part under test until the reading stabilizes (about 30 seconds).

5. Read the temperature in the display.

Note: The temperature probe is fitted with a type K mini connector. A mini connector to banana connector adaptor is supplied for connection to the input banana jacks.

SPECIFICATIONS

Technical:

Insulation: Class2, Double insulation.

Overvoltage category: CATIV 600V, CATIII 1000V

NOTE: These meters meet CAT III and CAT IV IEC 61010 standards. The IEC 61010 safety standard defines four overvoltage categories (CAT I to IV) based on the magnitude of danger from transient impulses. CAT III meters are designed to protect against transients in fixed-equipment installations at the distribution level; CAT IV meters are designed to protect against transients from the primary supply level (overhead or underground utility service).

Maximun voltage between any terminal and earth

ground: 1000V DC/AC RMS

Surge Protection: 8kV peak IEC 61010

Display: 4000 counts LCD display, 21mm high

Polarity: Automatic, (-) negative polarity indication.

Over-range: "OL" mark indication.

Low battery indication: A battery “symbol is displayed when the battery voltage drops below the operating level.

Measurement rate: 2 times per second nominal.

Auto power off: Meter automatically shuts down after approx. 30 minutes of inactivity.

Operating environment: -10 ^ to 50 ^ ( 14 ^ to 122 ^ ) at < 70 % relative humidity.

Storage temperature: -30 ^ to 60 ^ ( -4 ^ to 140 ^ ) at < 80 % relative humidity.to

Relative humidity: 90% ( 0^ C to 30^ C); 75%( 30^ C to 40^ C); 45%( 40^ C to 50^ C);

For inside use, max height: Operating:3000m, Storage 10,000m

Pollution degree: 2

Safety: The instrument complies with IEC/EN 61010-1:2001-02 and IEC/EN 61010-031:2002

Power: One 9V battery, NEDA 1604, IEC 6F22.

Dimensions: 182 (H) x 82 (W) x55 (D) mm

Weight: Approx.: 375g.

Accuracy

Accuracy is given at 18^ C to 28^ C ( 65^ F to 83^ F), less than 70 % RH

DC Voltage (Auto-ranging)

Range	Resolution	Accuracy
400.0mV	0.1mV	±0.5% of rdg ± 2 digits
4.000V	1mV
40.00V	10mV
400.0V	100mV
1000V	1V	±0.8% of rdg ± 2 digits

Input Impedance: 7.8MΩ.

Maximum Input: 1000V dc or 1000V ac rms.

AC Voltage (Auto-ranging)

Range	Resolution	Accuracy
400.0mV	0.1mV	± 0.8% of rdg ± 3 digits
4.000V	1mV
40.00V	10mV
400.0V	100mV
1000V	1V	+1.2% of rdg + 5 digits

Input Impedance: 7.8MΩ.

AC Response: 50 Hz 60Hz

Maximum Input: 1000V dc or 1000V ac rms.

DC Current (Auto-ranging)

Range	Resolution	Accuracy
400.0uA	0.1uA	±1.2% of rdg ± 3 digits
4000uA	1uA
40.00mA	10uA
400.0mA	100uA
10A	10mA	+2.5% of rdg + 3 digits

Overload Protection: 0.5A / 1000V and 10A / 1000V Fuse.

Maximum Input: 400uA dc on uA range

400mA dc on mA range

AC Current (Auto-ranging)

Range	Resolution	Accuracy
400.0uA	0.1uA	± 1.5% of rdg ± 5 digits
4000uA	1uA
40.00mA	10uA
400.0mA	100uA
10A	10mA	+3.0% of rdg + 5 digits

Overload Protection: 0.5A / 1000V and 10A / 1000V Fuse.

AC Response: 50 Hz to 60 Hz

Maximum Input: 400uA ac rms on uA

400mA ac rms on mA

10A ac rms on 10A range.

Resistance [Ω] (Auto-ranging)

Range	Resolution	Accuracy
400.0Ω	0.1Ω	±0.8% of rdg ± 5 digits
4.000kΩ	1 Ω	±0.8% of rdg ± 2 digits
40.00kΩ	10Ω
400.0kΩ	100Ω
4.000MΩ	1kΩ	±2.5% of rdg ±8digits
40.00MΩ	10kΩ

Input Protection: 1000V dc or 1000V ac rms.

Capacitance (Auto-ranging)

Range	Resolution	Accuracy
4.000nF	1pF	+5.0% of rdg+20 dgts
40.00nF	10pF	±5.0% of rdg ± 7 dgts
400.0nF	0.1nF	±3.0% of rdg ± 5 dgts
4.000uF	1nF
40.00uF	10nF
400.0uF	0.1uF
4.000mF	0.001mF	±10% of rdg ± 10 dgts
40.00mF	10.00mF

Input Protection: 1000V dc or 1000V ac rms.

Frequency (Auto-ranging)

Range	Resolution	Accuracy
4.000kHz	1Hz	± 1.2% of rdg ± 3 dgts
40.00kHz	10Hz
400.0kHz	100Hz
40.00MHz	1kHz	+1.5% of rdg + 4_dgts

Sensitivity: >0.5V RMS while ≤ 1MHz ;

Sensitivity: >3V RMS while >1MHz ;

Input Protection: 1000V dc or 1000V ac rms.

Temperature

Range	Resolution	Accuracy
-20^0C +760^0C 1	^0C	± 3% of rdg ± 5 dgts
-4^0F +1400^0F	1^0F	± 3% of rdg ± 8 dgts

Sensor: Type K Thermocouple

Overload protection: 1000V dc or ac rms..

Diode Test

Test current Resolution Accuracy
1Ma typical/Open MAX.3V	1 mV +	_10% of rdg ± 5 digits

Open circuit voltage: MAX. 3V dc

Overload protection: 1000V dc or ac rms.

Audible continuity

Audible threshold: Less than 35 Test current MAX. 1.5mA Overload protection: 1000V dc or ac rms.

Accessories

Included accessories

Standard Red/Black lead set with test probes

BATTERY and FUSE replacement

WARNING: To avoid electric shock, disconnect the test leads from any source of voltage before removing the battery door.

1. When the batteries become exhausted or drop below the operating voltage, the battery warning symbol will appear in the LCD display. The battery should be replaced.
2. Follow instructions for installing battery. See the Battery Installation section of this manual.
3. Dispose of the old battery properly.

WARNING: To avoid electric shock, do not operate your meter with the battery cover removed.

BATTERY INSTALLATION

WARNING: To avoid electric shock, disconnect the test leads from any source of voltage before removing the battery cover.

Do not operate the instrument with the battery cover removed

1. Disconnect the test leads from the meter.
2. Open the battery cover by loosening the screw using a Phillips head screwdriver.
3. Insert the battery into battery holder, observing the correct polarity.
4. Put the battery cover back in place. Secure with the two screws.

NOTE: If your meter does not work properly, check the fuses and battery to make sure that they are still good and that they are properly inserted.

REPLACING THE FUSES

WARNING: To avoid electric shock, disconnect the test leads from any source of voltage before removing the fuse /battery cover.

1. Disconnect the test leads from the meter and any item under test.
2. Open the fuse door by loosening the screw on the door using a Phillips head screwdriver.
3. Remove the old fuse from its holder by gently pulling it out.
4. Install the new fuse into the holder.
5. Always use a fuse of the proper size and value (0.5A/1000V fast blow for the 400mA range, 10A/1000V fast blow for the 10A range).
6. Put the fuse door back in place. Insert the screw and tighten it securely.

WARNING: To avoid electric shock, do not operate your meter until the fuse door is in place and fastened securely.