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380950  V1.0  6/07 

 

Support line (781) 890-7440 

Technical Support: Extension 200; E-mail: [email protected] 

Repair & Returns: Extension 210; E-mail: [email protected] 

Product specifications subject to change without notice

For the latest version of this User’s Guide, Software updates, and other 

up-to-the-minute product information, visit our website: www.extech.com

 

Extech Instruments Corporation, 285 Bear Hill Rd., Waltham, MA 02451 

Maintenance 

WARNING: 

To avoid electrical shock, disconnect the meter from any circuit, remove the 

test leads from the input terminals and turn OFF the meter before opening the case. Do 
not operate with open case. 

Cleaning and Storage 

Periodically wipe the case with a damp cloth and mild detergent; do not use abrasives or 
solvents. If the meter is not to be used for periods of longer than 60 days, remove the 
batteries and store them separately 

Battery Replacement 

1. 

Remove the two rear battery cover Phillips head screws 

2. 

Open the battery compartment 

3. 

Replace the two 1.5V AAA batteries. 

4. 

Re-assemble the meter 

 

Warranty 

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects 
in parts and workmanship for one year from date of shipment (a six month limited warranty 
applies to sensors and cables). 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 ext. 210 for authorization or visit our website www.extech.com for contact 
information. A Return Authorization (RA) number must be issued before any product is 
returned to Extech. The sender is responsible for shipping charges, freight, insurance and 
proper packaging to prevent damage in transit. This warranty does not apply to defects 
resulting from action of the user such as misuse, improper wiring, operation outside of 
specification, improper maintenance or repair, or unauthorized modification. Extech 
specifically disclaims any implied warranties or merchantability or fitness for a specific 
purpose and will not be liable for any direct, indirect, incidental or consequential damages. 
Extech's total liability is limited to repair or replacement of the product. The warranty set 
forth above is inclusive and no other warranty, whether written or oral, is expressed or 
implied. 

Calibration and Repair Services 

Extech offers repair and calibration services for the products we sell. Extech also provides 
NIST certification for most products. Call the Customer Care Department for information on 
calibration services available for this product. Extech recommends that annual calibrations 
be performed to verify meter performance and accuracy. 
 

 
 
 
 
 
 
 
 
 

 

 

Copyright 

©

 2007 Extech Instruments Corporation 

All rights reserved including the right of reproduction in whole or in part in any form. 

Содержание 380950

Страница 1: ...User s Guide Model 380950 80A Mini AC DC Clamp Meter 99 Washington Street Melrose MA 02176 Phone 781 665 1400 Toll Free 1 800 517 8431 Visit us at www TestEquipmentDepot com ...

Страница 2: ...nce modes Do not measure current on a circuit whose voltage exceeds 240V When changing ranges always disconnect the test leads from the circuit under test CAUTIONS Improper use of this meter can cause damage shock injury or death Read and understand this user manual before operating the meter Always remove the test leads before replacing the battery or fuses Inspect the condition of the test leads...

Страница 3: ...Backlight Button 7 Mode select button 8 Range select button 9 Hz Duty Cycle button 10 COM input jack 11 V Ω Hz jack 12 Battery cover rear AC AC alternating current DC DC direct currrent Minus sign AUTO AutoRange mode ZERO ZERO mode Audible Continuity HOLD Data Hold mode Low Battery icon Diode test mode m milli V Volts A Amps K kilo M Mega Ω Ohms ...

Страница 4: ...V Ω Hz jack 3 Select AC or DC with the MODE button 4 Connect the test leads to the circuit under test 5 Read the voltage on the display The display will indicate the proper decimal point and value Resistance Measurements 1 Set the function switch to the Ω CAP position 2 Insert the black test lead banana plug into the negative COM jack Insert the red test lead banana plug into the positive VΩ Hz ja...

Страница 5: ...ack Insert the red test lead banana plug into the positive VΩHz jack 4 Press the ZERO key to null the meter display 5 Touch the test probe tips to the capacitor you wish to check 6 Read the capacitance value on the display Frequency or Duty Cycle Measurements 1 Turn the rotary switch to the Hz position 2 Insert the black test lead banana plug into the negative COM jack and the red test lead banana...

Страница 6: ...e the resolution from 0 1 to 1 Data Hold To freeze the LCD meter reading press the HOLD button While data hold is active the HOLD display icon appears on the LCD Press the HOLD button again to return to normal operation Backlight Press and hold the HOLD button for 2 seconds to turn the backlight on off Note The HOLD feature will activate when the backlight is turned on Press the HOLD button again ...

Страница 7: ... AC Voltage 50 60Hz 600V 2 0 5 digits 400 0Ω 1 0 4 digits 4 000kΩ 40 00kΩ 400 0kΩ 1 5 2 digits 4 000 MΩ 2 5 3 digits Resistance 40 00MΩ 3 5 5 digits 40 00nF 5 30 digits 400 0nF 3 5 digits 4 000µF 40 00µF 3 5 5 digits Capacitance 100 0µF 5 5 digits 5 000Hz 1 5 5 digits 50 00Hz 500 0Hz 5 000KHz 50 00KHz 500 0KHz 5 000MHz Frequency 10 00MHz 1 2 2 digits Sensitivity 10Vrms min 0 5 to 99 0 1 2 2 digits...

Страница 8: ...nsulation to IEC1010 1 1995 EN61010 1 1995 Overvoltage Category III Pollution Degree 2 PER IEC1010 OVERVOLTAGE INSTALLATION CATEGORIES OVERVOLTAGE CATEGORY I Equipment of OVERVOLTAGE CATEGORY I is equipment for connection to circuits in which measures are taken to limit the transient overvoltages to an appropriate low level Note Examples include protected electronic circuits OVERVOLTAGE CATEGORY I...

Страница 9: ...e instrument for service during or beyond the warranty period contact the Customer Service Department at 781 890 7440 ext 210 for authorization or visit our website www extech com for contact information A Return Authorization RA number must be issued before any product is returned to Extech The sender is responsible for shipping charges freight insurance and proper packaging to prevent damage in ...

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