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DUAL DISPLAY MULTIMETER

                                                 

USER’S MANUAL

CAUTION

THIS   IS   AN   IEC   SAFETY   CLASS  

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  PRODUCT.   THE   GROUND   WIRE   IN   THE   LINE   CORD   MUST   BE 

CONNECTED FOR SAFETY.

WARRANTY

Our company warrants to the original purchaser that each product it manufactures will be free from defects in 
material and workmanship under normal use and service for a period of one year from date of purchase. Our 
company’s warranty does not apply to fuses, test leads or any product which, in our company’s opinion, has been 
misused, altered, or damaged by accident or abnormal conditions of operation or handling.

To  obtain  warranty service,  contact  the  nearest  Service  Center  or  send the  product,  with  a  description of  the 
difficulty, and postage prepaid, to the nearest Service Center. We assume no risk for the damage in transit. We will, 
at its option, repair or replace the defective product free of charge or refund your purchase price. However, if we 
determine   that   the   failure   was   caused   by   misuse,   alterations,   accident   or   abnormal   condition   of   operation   or 
handing, you will be billed for the repair and the repaired product will be returned to you transportation prepaid.

SHIPPING TO MANUFACTURER FOR REPAIR OR ADJUSTMENT

All shipment of our company’s instruments should be made via United Parcel Service or “Best Way” prepaid. The 
instrument should be shipped in the original carton; or if it is not available, use any suitable container that is rigid 
and of adequate size. If a substitute container is used, the instrument should be wrapped in paper and surrounded 
with at least four inches of excelsior or similar shock-absorbing material.

CLAIM FOR DAMAGE IN SHIPMENT TO ORIGINAL PURCHASER

The instrument should be thoroughly inspected immediately upon original delivery to purchaser. All material in the 
container   should   be   checked   against   the   enclosed   packing   list.   The   manufacturer   will   not   be   responsible   for 
shortages against the packing sheet unless notified immediately. If the instrument is damaged in any way, a claim 
should be filed with the carrier immediately. (To obtain a quotation to repair shipment damage, contact the nearest 
Service Center.) Final claim and negotiations with the carrier must be completed by the customer.

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Summary of Contents for VC8145A

Page 1: ...n of operation or handing you will be billed for the repair and the repaired product will be returned to you transportation prepaid SHIPPING TO MANUFACTURER FOR REPAIR OR ADJUSTMENT All shipment of ou...

Page 2: ...ith computer WHERE TO GO FROM HERE This manual has been organized to assist you in getting started quickly It is not necessary for you to read the entire manual before using the meter effectively Howe...

Page 3: ...wer off before connecting the meter in the circuit Check meter fuses before measuring transformer secondary or motor winding current See Section 4 MAINTENANCE An open fuse may allow high voltage build...

Page 4: ...e is not displayed After the meter completes the power up sequence it assumes the power up measurement configuration stored in non volatile memory The power up configuration set at the factory is show...

Page 5: ...press the desired function button and connect the test leads as shown in Figure 2 4 The meter will select the appropriate range in the autorange mode Measuring Current To measure current insert the r...

Page 6: ...Bm using the following formula dBm 10 lg 1000 value2 reference impedance where value is the measurement value and displayed on the secondary display The reference impedance can be changed Refer to Cha...

Page 7: ...terminal to earth 1000V dc or ac peak SELECTING A MEASUREMENT FUNCTION Press a function button as shown in Figure 3 3 to select a measurement function When you select a function annunciators turn on t...

Page 8: ...the autorange mode the AUTO annunciator is lit In autorange the meter automatically selects the next higher range when a reading is greater than full scale If no higher range is available OL overload...

Page 9: ...ifier When the relative modifier is selected the last valid reading is stored as the relative base and displayed on the secondary display The reading on the primary display is always the difference be...

Page 10: ...signated range of values In the compare mode the meter displays a reading in the secondary display and indicates in the primary display if that value is lower CO LO than higher CO HI than or within a...

Page 11: ...use the software stop the communication the instrument stop transmit measured value and the COMM annunciator disappear POWER UP CONFIGURATION Factory Setting of Power Up Configuration When the meter i...

Page 12: ...s AUTO when CO BB annunciator is showed on the primary display the YES inside the limiter or NO exceed the limiter is showed on the secondary display Press the HOLD save the set value the memory annun...

Page 13: ...of identical rating and reinsert the fuse and holder into the input terminal socket Secure the fuse holder by pressing in and turning the holder 90 degrees clockwise Replacing the 10A Input Fuse CAUT...

Page 14: ...r still fails to operate properly pack it securely in its original container if available and forward it postage paid to the nearest Service Center Assumes no responsibility for damage in transit SECT...

Page 15: ...1KHz 30 00 300 00 mV AC3V 1KHz 0 3000 3 0000 V AC30V 1KHz 3 000 30 000 V AC300V 50Hz 30 00 300 00 V AC750V 50Hz 75 0 750 0 V Resistance 300 300 00 3K 3 0000 K 30K 30 000 K 300K 300 00 K 3M 3 0000 M 3...

Page 16: ...e and the display reads the calibrated point 5 Press the REL button to save the calibrated value after 5 seconds and the SAVE displayed on the LCD if the ERR displayed check the set value for the stan...

Page 17: ...e the 30mA range 4 Press the MNMX button of the meter select the 3mA calibration point and the F annunciator appears on the top left corner of the LCD 1KHz appears on the secondary display indicates t...

Page 18: ...T button of the meter to calibrate the indicated range displayed on the meter 5 Keep the meter at least 5 seconds press the REL button to save the calibrated value and the SAVE displayed on the LCD if...

Page 19: ...g digits READING RATES DC VOLTAGE Input Impedance 1000M at 300mV and 3V 10M at other ranges Normal Mode Rejection Ratio NMR 60dB at 50Hz or 60Hz Common Mode Rejection Ratio CMR 120dB at 50Hz or 60Hz M...

Page 20: ...w fuse for 30 seconds maximum TRUE RMS AC VOLTAGE AC COUPLED Range Resolution Accuracy 20 50Hz 50 Hz 2KHz 2 10 KHz 10 20 KHz 20 30 KHz 300mA 10uA 2 30 0 5 30 1 80 5 50 10A 1mA 1 5 30 3 30 indicates th...

Page 21: ...rature 5 to 40 Storage Temerature 25 to 50 Relative Humidity 90 at 5 to 28 non condensing 80 at 28 to 40 70 at 10 to 40 for the 300K 3M and 30M ranges GENERAL Common Mode Voltage 1000V dc or peak ac m...

Page 22: ...nufacturer is not liable for any accident and hazard arising from any maoperation The functions described in this operation instruction should not be used as grounds to apply this product to a particu...

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