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Range Hold Button

 

The Resistance, AC or DC voltage or current ranges can 
be selected manually or automatically. The Range Hold 
button is used to select the range hold mode as follows. 
1. Press to change from automatic to manual ranging. 

“RH” is displayed in the manual range mode 

2. Press to change range in the manual range mode. 

Observe the decimal point position to determine the 
range set. 

3. Press and HOLD for 2 seconds to change back to 

automatic ranging. 

Data Hold Button 

1. The display will hold the reading when the Data Hold 

button is pressed. The “DH” symbol will be displayed. 

2. Data Hold will be canceled when the “D-H” button is 

pressed again or it will be canceled automatically if the 
Function switch is changed to another position. 

OPERATION 

CAUTION: This meter is a precision electronic instrument. 
To avoid damaging the unit, observe all safety statements 
contained in this manual. 

DC or AC Voltage Measurement

  

1. Connect the black test lead to the COM jack. 
2. Set the Function Switch to the V position and select 

AC or DC. 

3. Connect the positive test probe and the black test lead 

across the source or load under measurement. 
For DC voltage, the polarity of the measurement will be 
indicated. 

DC or AC Current Measurement

  

1. Connect the black test lead to the COM jack. 
2. Set the Function Switch to the mA position and select 

DC or AC. 

3. Connect the positive test probe and the black test lead 

in series with load under measurement. 
For DC current, the polarity of the measurement will be 
indicated. 
 

Summary of Contents for 381626

Page 1: ...Pen Multimeter Model 381626 CAUTION Read understand and follow all Safety Rules and Operating Instructions in this manual before using this product ...

Page 2: ...vice if you are not qualified to do so EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for one year from date of shipment If it should become necessary to return the instrument for service during or beyond the warranty period contact the Customer Service Department at 781 890 7440 for authorization A Return Authorization RA number must be issu...

Page 3: ...esponse DC Current 30 300mA 10µA 1 5 reading 3 digits 40Hz to 400Hz AC Current 30 300mA 10µA 2 0 reading 5 digits Average responding Resistance 300 3k 30k 300kΩ 3MΩ 30MΩ 0 1 ohms 1 5 reading 5 digits 2 0 reading 8 digits 3 0 reading 10 digits Overload Protection 250VAC rms Open ckt V 0 6V 1 2V Continuity Buzzer sounds for resistance less than 20 ohms approximately Logic 1V Logic low 1V to 2V Indet...

Page 4: ... voltages 3 DO NOT measure voltage above 500V DC or AC rms 4 ALWAYS turn off the power and disconnect the test leads before replacing the fuse or battery FUNCTIONAL DESCRIPTION 1 Data Hold Button 2 Range Hold Button 3 DC AC Button 4 Function Switch 5 Green LED 6 Red LED 7 Common Terminal 8 Positive Test Probe 9 Battery Fuse Door 10 LCD Display Bargraph 11 Function Switch Settings Switch Button V Ω...

Page 5: ...it will be canceled automatically if the Function switch is changed to another position OPERATION CAUTION This meter is a precision electronic instrument To avoid damaging the unit observe all safety statements contained in this manual DC or AC Voltage Measurement 1 Connect the black test lead to the COM jack 2 Set the Function Switch to the V position and select AC or DC 3 Connect the positive te...

Page 6: ... test probe is Diode Test 1 Connect the black test lead to the COM jack 2 Set the Function Switch to the position and select with Button 3 3 Connect the positive test probe and the black test lead across the diode under test If the positive test probe is placed on the anode of the diode the display will indicate the approximate forward voltage drop of the diode Logic Test 1 Connect the black test ...

Page 7: ...eplacement NOTE Do not operate the instrument or connect the test lead or probe to any circuit with the rear cover open 1 Remove the screw and open the battery door Replace the old batteries or the blown fuse with the same type Fuse 800mA 250V fast blow type Battery Two 1 5V AAA or UM 4 type ...

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