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 12

MIN/MAX/AVG 

Relative Base value 

Frequency of Power 

50Hz 

Changeable 

Back Light Time 

0000 S 

Changeable 

Continuity beep 

when the input drops below 150

 Changeable 

Compare beep 

if the reading lower or higher set value 

Changeable 

Changing the Power-Up Configuration   

 

You can change the power-up configuration to one that more closely meet your needs and preferences. 

To change the Power-Up Configuration, power-up the meter and press SHIFT simultaneity   

1.  Change Back Light Time: Press AUTO, when “bLOFF” is annunciator showed on the primary 

display. The value of setting is showed on the secondary display, then press 
     or      to step up or down the setting value with 30S. The limit of the setting value is 
3600S(1 hour), when the setting value is “0000” indicates that back light only be turned off 
manually. Press the HOLD save the set value, the “memory” annunciator is lit on. 

2.  Change Frequency of Power: Press AUTO, when “FrSET” annunciator is showed on the primary 

display, the Frequency is showed on the secondary display, then press    or  
to select the frequency at 50Hz or 60Hz. (Once change the Frequency of Power, the meter 
should be calibrated newly). Press the HOLD save the set value, the “memory” annunciator is lit 
on. 

3.  Change the Reference Impedance: Press AUTO, when “CONS” annunciator is showed on the 

primary display, the Reference Impedance is showed on the secondary display. Then press    
or          to select the needed value (supplied value are 50, 75, 93, 100, 150, 300, 500, 600, 800, 
1200, 2400 (unit: 

)). Press the HOLD save the set value, the “memory” annunciator is lit on. 

4.  Change the continuity beep mode: Press AUTO, when “CH-BB” annunciator is showed on the 

primary display, the “YES”(connect beep) or ”NO”(disconnect beep) is showed on the secondary 
display. Press the HOLD save the set value, the “memory” annunciator is lit on. 

5.  Change the compare beep mode: Press 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” annunciator is lit on. 

6. 

Factory set: Press AUTO, when “FACTY” annunciator is showed on the primary display, select 
the default factory set. To resume the factory set, Press the HOLD save the default value. To exit 
factory set mode, power off the instrument.

 

 
 
 
 

SECTION 4 

Maintenance

 

NOTE 

When servicing the meter, use only the replacement parts specified   

INTRODUCTION  

       Section 4 provides the information necessary for the user to perform basic maintenance. Users should 

not attempt to perform maintenance not described in this section. Qualified service personnel should 
refer to this Manual for complete maintenance, service. 

CAUTION 

TO AVOID ELECTRICAL SHOCK OR DAMAGING THE METER, NEVER GET WATER INSIDE 

Содержание 8145B

Страница 1: ...ion 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...

Страница 2: ...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 However we recommend that you do so in orde...

Страница 3: ...meter in the circuit z Check meter fuses before measuring transformer secondary or motor winding current See Section 4 MAINTENANCE An open fuse may allow high voltage build up which is potentially ha...

Страница 4: ...tests check RAM ROM A D and the display The meter has passed all tests and is ready for normal operation if an error code is not displayed After the meter completes the power up sequence it assumes th...

Страница 5: ...GROUND THE METER IS PROTECTED AGAINST OVERLOADS UP TO THE LIMITS SHOWN IN TABLE 3 1 EXCEEDING THESE LIMITS POSES A HAZARD TO THE METER AND OPERATOR Measuring Voltage Resistance or Frequency To measure...

Страница 6: ...ibels are always displayed in a single fixed range with 0 01 dB resolution Press the AUTO toggle in and out autorange you can also press the and change range manually A voltage measurement is converte...

Страница 7: ...000V peak on all ranges mA and mA mA and COM 500mA dc or ac rms A and A 10A and COM 10A dc or ac rms V and COM 250V dc or ac rms on all ranges V and COM 250V dc or ac rms on all ranges All Functions A...

Страница 8: ...00Hz 330 00 Hz 30MHz range have not full scale 3KHz 3 3000 KHz 30KHz 33 000 KHz 300KHz 330 00 KHz 3MHz 3 3000 MHz 30MHz ANGING AUTO Ranging operations are performed using the AUTO and buttons see Figu...

Страница 9: ...If the input signal is below the required level the frequency will be displayed as zero If the measurements are unstable the input signal may be near the threshold level SELECT A FUNCTION MODIFIER REL...

Страница 10: ...taken The measurement reading displayed on the secondary display To exit the MN MX AVG modifier press and hold down the MN MX button for two seconds or press other function buttons Selecting the MN M...

Страница 11: ...USB cable to the communication connector on the real panel plug the other end of the cable to the USB port of the computer running the devote DMMVIEW_8145B software set the corresponding connector po...

Страница 12: ...ONS annunciator is showed on the primary display the Reference Impedance is showed on the secondary display Then press or to select the needed value supplied value are 50 75 93 100 150 300 500 600 800...

Страница 13: ...is good the meter will read between 1 to 19 If the fuse is blown the meter will read 10M to OL 3 Remove the test lead probe from the mA input terminal and insert it into the 10A input terminal If the...

Страница 14: ...r Current dc function and 300mA range on the meter and the input level from the 5520A The display should meet the request listed in Section 6 3 Connect a test lead from the output 20A HI and LO connec...

Страница 15: ...VIRONMENT STATION z Temperature 23 2 z Relative humidity 70 RH z Power varied at 5 of rated voltage z Frequency of power rated value 1Hz z Warmup 2 hours for standard equipment 1 hour for measured met...

Страница 16: ...ine connection right or not newly 6 Press the button to change range in calibration mode the meter is in manual range 7 Set the standard equipment to the required output 8 Repeat step 4 to 7 until com...

Страница 17: ...quency of the applied signal should be 1KHz 8 Applied the standard equipment 300mV 1KHz to the meter 9 Keep the meter at least 20 seconds press the REL button to save the calibrated value and the SAVE...

Страница 18: ...d equipment in the STBY state Connect the standard equipment with the meter as shown in Figure 5 3 referred before 10 Applied the standard equipment 3A 1KHz to the meter 11 Keep the meter at least 20...

Страница 19: ...ve the line connected with the AUX terminal of the standard equipment 8 Repeat step 5 to step 7 until complete all range SECTION 6 Specifications INTRODUCTION This Section contains the specifications...

Страница 20: ...50Hz or 60Hz 1K unbalanced resistance Maximum Input 750V rms 1000V peak DC CURRENT Range Resolution Accuracy Input Impedance 300 mA 10uA 0 1 3 1 10A 1 mA 1 5 3 0 01 Maximum Input 300mA Protected with...

Страница 21: ...t Voltage 2V Test Current Approximate 1mA when measuring forward bias junction Continuous Resistance 150 FREQUENCY Range Resolution Accuracy 300Hz 0 01 Hz 0 05 2 3KHz 0 1 Hz 30KHz 1 Hz 300KHz 10 Hz 3M...

Страница 22: ...ttention to Use of Operation Instruction z The present operation instruction is subject to change without notice z The content of the operation instruction is regarded as correct Whenever any user fin...

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