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EX570-ENG   V2.3  3/09 

12 

Relative mode 

The relative measurement feature allows you to make measurements relative to a stored 
reference value. A reference voltage, current, etc. can be stored and measurements made 
in comparison to that value. The displayed value is the difference between the reference 
value and the measured value. 

1. Perform the measurement as described in the operating instructions. 
2. Press and Hold the

 REL

 button to store the reading in the display and the "

REL

indicator will appear on the display. 

3. The display will now indicate the difference between the stored value and the measured 

value. 

4. Press and Hold the 

REL

 button to exit the relative mode. 

PEAK HOLD 

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

PEAK

 button. 

PMAX

” will appear in the display. The meter will update the display each time a higher 

positive peak occurs. Press the 

PEAK

 button again to exit the mode. 

DISPLAY BACKLIGHT 

Press the

 HOLD/

 key for >1 second to turn the backlight on. The backlight will 

automatically turn off after 10 seconds. 

HOLD 

The hold function freezes the reading in the display. Press the

 HOLD

 key momentarily to 

activate or to exit the

 HOLD

 function. 

LOW BATTERY INDICATION 

When the low battery 

+

 icon appears in the display, the battery should be replaced. 

AUTO POWER OFF 

The auto off feature will turn the meter off after 15 minutes. To disable the auto power off 
feature, hold down the 

SELECT

 button and turn the meter on. “

APO d

” will appear in the 

display. Turn the meter off and then on again to re-enable the auto power off feature.  
 

Byram 

Labs

Содержание EX570

Страница 1: ...User s Guide True RMS Multimeter with IR Thermometer Extech EX570 B y r a m L a b s...

Страница 2: ...minals identifies them as being associated with ranges that may in normal use be subjected to particularly hazardous voltages For maximum safety the meter and its test leads should not be handled when...

Страница 3: ...e difficult and misleading because of the uncertainty of connection to the recessed electrical contacts Other means should be used to ensure that the terminals are not live If the equipment is used in...

Страница 4: ...UTION when working with high voltages 3 DO NOT measure voltage if the voltage on the COM input jack exceeds 600V above earth ground 4 NEVER connect the meter leads across a voltage source while the fu...

Страница 5: ...t stand and battery compartment are on rear of unit Symbols and Enunciators Continuity Diode test Low Battery MEM Memory n nano 10 9 capacitance micro 10 6 amps cap m milli 10 3 volts amps A Amps k ki...

Страница 6: ...lead banana plug into the negative COM jack Insert the red test lead banana plug into the positive V jack 4 Touch the black test probe tip to the negative side of the circuit Touch the red test probe...

Страница 7: ...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 Touch the red test probe tip to the pos...

Страница 8: ...ck 5 If the resistance is less than approximately 35 the audible signal will sound If the circuit is open the display will indicate OL DIODE TEST 1 Rotate the function switch to the green position 2 I...

Страница 9: ...sers do not normally present a hazard but may present some potential for hazard if viewed directly for extended periods of time IR Spot to Distance Diagram The 30 1 spot to distance ratio determines t...

Страница 10: ...to 482 F CAPACITANCE MEASUREMENTS WARNING To avoid electric shock disconnect power to the unit under test and discharge all capacitors before taking any capacitance measurements Remove the batteries...

Страница 11: ...utoRanging 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...

Страница 12: ...current The meter can capture negative or positive peaks as fast as 1 millisecond in duration Press the PEAK button PMAX will appear in the display The meter will update the display each time a highe...

Страница 13: ...e chemicals cleaning solvents or detergents 5 USE ONLY FRESH BATTERIES OF THE RECOMMENDED SIZE AND TYPE Remove old or weak batteries so they do not leak and damage the unit 6 IF THE METER IS TO BE STO...

Страница 14: ...ix A screws securing the rear cover 4 Gently remove the old fuse and 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 600 mA range SIB...

Страница 15: ...fied from 5 of range to 100 of range DC Current 400 A 0 01 A 0 7 reading 3 digits 4000 A 0 1 A 40 mA 0 001 mA 400 mA 0 01 mA 1 0 reading 3 digits 10 A 0 00 A 1 5 reading 3 digits 20 A 30 sec max with...

Страница 16: ...Frequency 40 Hz 0 001 Hz 0 1 reading 1 digits 400 Hz 0 01 Hz 4 kHz 0 0001 kHz 40 kHz 0 001 kHz 400 kHz 0 01 kHz 4 MHz 0 0001 MHz 40 MHz 0 001 MHz Duty Cycle 0 1 to 99 90 0 01 1 0 reading 2 digits Pul...

Страница 17: ...ndication for positive Minus sign for negative Measurement Rate 2 times per second nominal Low Battery Indication is displayed if battery voltage drops below operating voltage Battery One 9 volt NEDA...

Страница 18: ...ation 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 a...

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