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Relative zero 

 mode 

Relative zero 

 mode

 

allows the user to offset the meter consecutive measurements 

with the displaying reading as the reference value. The display will now show readings 

relative to the stored reference value. That is, display = reading - stored value. Press 
the 

  button momentarily to activate or to exit relative zero mode. 

 

Backlighted display 

Press the 

SELECT

 button for 1 second or more to turn on or off the display backlight 

function. 

 

Manual or Auto-ranging 

Press the 

RANGE

 button momentarily to select manual-ranging mode, and the meter 

will remain in the range it was in, the LCD symbol 

  turns off. Press the button 

momentarily again to step through the ranges. Press and hold the button for 1 second 
or more to resume auto-ranging mode. 

Note: Manual ranging mode feature is not available in Hz & Cx functions. 

Summary of Contents for AM-100

Page 1: ...USER S MANUAL AM 100 AM 105 TRMS AM 110 TRMS Digital Multimeters ...

Page 2: ...DC and Category III 600 Volts AC DC A mAµA Category III 500 Volts AC and 300 Volts DC PER IEC61010 OVERVOLTAGE INSTALLATION CATEGORY OVERVOLTAGE CATEGORY II Equipment of OVERVOLTAGE CATEGORY II is energy consuming equipment to be supplied from the fixed installation Note Examples include household office and laboratory appliances OVERVOLTAGE CATEGORY III Equipment of OVERVOLTAGE CATEGORY III is eq...

Page 3: ...not attempt a current measurement to any circuit where the open circuit voltage is above the protection fuse voltage rating Suspected open circuit voltage should be checked with voltage functions Never attempt a voltage measurement with the test lead inserted into the µA mA or A input jack Only replace the blown fuse with the proper rating as specified in this manual CAUTION Disconnect the test le...

Page 4: ... 1 3 3 4 digits 4000 counts LCD display 2 Push buttons for special functions features 3 Selector to turn the Power On or Off and select a function 4 Input Jack for 10A 20A for 30sec current function 5 Input Jack for all functions EXCEPT current µA mA A function 6 Common Ground reference Input Jack for all functions 7 Input Jack for milli amp and micro amp functions ...

Page 5: ...input impedance for least current drain in measuring small signals and can cope better with most commercially available voltage output transducers and adapters The non zero display reading is normal when the meter inputs are open circuit which will not affect actual measurement accuracy Open input is actually a floating condition which is not a zero volt input condition The meter will show zero or...

Page 6: ...iring connections and operation of switches A continuous beep tone indicates a complete wire CAUTION Using Resistance Continuity Diode or Capacitance function in a live circuit will produce false results and may damage the instrument In many cases the suspected component must be disconnected from the circuit to obtain an accurate measurement reading ...

Page 7: ...ds connections reverse biased across the diode The digital display shows OL if the diode is good Any other readings indicate the diode is resistive or shorted defective Defaults at Ω Press SELECT button momentarily 3 times to select Capacitance function Relative zero mode can be used to zero out the parasitic capacitance of the leads and the internal protection circuitry of the meter when measurin...

Page 8: ... fuse s Beep Jack Input Warning The meter beeps to warn the user against possible damage to the meter due to improper connections to the µA mA or A input jacks when other function like voltage function is selected Temperature function AM 110 only Be sure to insert the banana plug type K temperature bead probe Bkp60 Optional purchase with correct polarities Defaults at degree C Celsius Press SELECT...

Page 9: ...to exit relative zero mode Backlighted display Press the SELECT button for 1 second or more to turn on or off the display backlight function Manual or Auto ranging Press the RANGE button momentarily to select manual ranging mode and the meter will remain in the range it was in the LCD symbol turns off Press the button momentarily again to step through the ranges Press and hold the button for 1 sec...

Page 10: ...t leads from the input jacks 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 Trouble Shooting If the instrument fails to operate check batte...

Page 11: ...crews from the battery access door of the case bottom Lift the battery access door and thus the battery compartment up Replace the battery Re fasten the screws Fuse replacement Loosen the 4 screws from the case bottom Lift the end of the case bottom nearest the input jacks until it unsnaps from the case top Replace the blown fuse s and or the battery Replace the case bottom and ensure that all the...

Page 12: ...61010 1 1995 and IEC61010 1 1995 to CAT II 1000V CAT III 600V Protection reinforced CE Terminals to COM ratings V Category II 1000 Volts AC DC and Category III 600 Volts AC DC A mAµA Category III 500 Volts AC and 300 Volts DC Overload Protections Protection reinforced CE µA mA 0 63A 500V IR200kA F Fuse A 12 5A 500V IR20kA F Fuse V 1050Vrms 1450Vpeak Ω Others 600VDC VAC rms Transient protection 6 5...

Page 13: ...75 1 at full scale 3 5 1 at half scale and with frequency components within the specified frequency bandwidth for non sinusoidal waveforms DC Voltage RANGE Accuracy 400 0 mV 0 3 4d 4 000V 40 00V 400 0V 0 5 3d 1000V 1 0 4d NMRR 50dB 50 60Hz CMRR 120dB DC 50 60Hz Rs 1kΩ Input Impedance 10MΩ 30pF nominal 1000MΩ for 400 0mV range Type K Temperature AM 110 TRMS RANGE Accuracy 20OC TO 300 OC 2 3OC 4OF T...

Page 14: ...al Audible Continuity Tester Audible threshold between 10Ω and 120Ω Capacitance RANGE Accuracy 500 0nF 5 000µF 50 00µF 500 0µF 3000µF 3 5 6d Additional 50 00nF range accuracy is not specified Accuracies with film capacitor or better Specified with battery voltage above 2 8V approximately half full battery Accuracy decreases gradually to 12 at low battery warning voltage of approximately 2 4V Hz Fr...

Page 15: ...n tampered with or taken apart Should your instrument fail due to defective materials and or workmanship during this one year period a no charge repair or replacement will be made to the original purchaser Please have your dated bill of sale which must identify the instrument model number and serial number and call the number listed below Repair Department ATP Amprobe TIF Promax Miramar FL Phone 9...

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