background image

 

4

 
 
 
 

Figure 2-1. Front Panel 

The rear panel (shown in Figure 2-2) contains the power-line cord connector, 

communication 

interface

, the Serial Number Label. 

Figure 2-2. Rear Panel 

ADJUSTING THE HANDLE 

 

For bench-top use, the handle can be positioned to provide different viewing angles. To adjust its 
position, pull the ends out to a hard stop and rotate it to a position. To remove the handle, adjust it to 
the vertical stop position and pull the ends all the way out. 

POWER 

CAUTION 

 

TO AVOID SHOCK HAZARD, CONNECT THE INSTRUMENT POWER CORD TO A POWER 

RECEPTACLE WITH EARTH GROUND.   

NOTE  

 

Apply the rated voltage and frequency to the meter as marked on the rear panel of the meter.   

TURING THE METER ON 

 

To turn the meter on, press the POWER button located on the lower-left of the front panel. If you turn 
the meter off, you must wait five seconds before turning the meter back on. If you do not, the meter 
will not power-up.   

 

When the meter is turned on, the full screen displays light while the instrument performs an internal 
self-test of its digital circuitry. These 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 the power-up measurement 
configuration stored in non-volatile memory. The power-up configuration set at the factory is shown 
in Table 3-6. (To change the power-up configuration, refer to “CHANGING THE POWER-UP 
CONFIGURATION” in Section 3.) 

USING THE PUSHBUTTONS   

             

The pushbuttons on the front panel select meter functions and operations. A summary of basic 
pushbutton operations is shown in Figure2-3. 

Figure 2-3. Summary of Basic Pushbutton Operations 

 

Pushbuttons can be used in two ways. You can: 

z

  Press a single button to select a function or operation.   

DCV

ACV

FREQ

DCA

ACA

AUTO

MN

SHIFT

M X

HOLD

COMP

ON

1

POW ER

OFF

0

RANGE

dBm

REL

RATE

FUNCTION BUTTONS

FUNCTIO N MODIFIER BUTTONS

RANGE BUTTONS

BACK LIGHT

Press in to Power-up

Press to Step Through 
Measurement Rate(Slow,Fast)

Press to Select a Function

Press to Select a Modifier Mode

Press to Select a Range

AC

220V

50Hz

THERE ARE NO PARTS TO DISASSEMBLE, 

NO MECHANICAL ADJUSTMENTS TO MAKE,
IT IS  DISALLOWED TO  OPEN THE CASE.

 

TO AVOID SHOCK HAZARD, CONNECT THE 
INSTRUMENT POWER CORD TO A POWER 
RECEPTACLE WITH EARTH GROUND.

USB

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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