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UNI-T UT56, Operating Manual

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UNI-T UT56 Operating Manual Download Page 9

C.  Making Measurements

Caution:

1

   On/Off Switch                  

2

   Capacitance jack

3

   Liquid Crystal Display      

4

   Date Hold Switch

5

   Rotary switch                   

6

   Transistor jack

7

   Input jack

(1)   If there is no display or

        

 is shown on the

        LCD when the Meter is switched on, replace
        the battery ASAP.
(2)   Never exceed the maximum input voltage or
       current limits shown besides the input jacks
       

  

 

, otherwise the Meter will be damaged

       and this is dangerous to life.
(3)   Turn the rotary switch to proper range before
        operating.

“   ”

“    ”

Model UT56: OPERATING MANUAL

 9

Summary of Contents for UT56

Page 1: ...h has steady function and is a highly reliable hand held measuring instrument The Meter uses large scale of integrated circuit with double integrated A D converter as its core and has full range overload protection The Meter can measure DC current AC current DC Voltage AC Voltage Resistance Capacitance Diode Transistor Frequency and Continuity Beeper which is an ideal measuring tool for users Mode...

Page 2: ... metal l Connect the red and black test lead to the correct measuring input jack properly l Do not input values over the maximum range of each measurement to avoid damages of the Meter l Do not turn the rotary function switch during Voltage and Current measurement otherwise the Meter could be destroyed l Make sure to use new fuses with proper rating in stead of bad fuses l To avoid electric shock ...

Page 3: ...Fetch out the battery when the meter will not be used for long period l Do not operate the Meter under adverse environmental condition including high temperature and especially humid area as the Meter s function may be effected after moisturizing l To avoid damages and dangerous do not change the circuit on your own l Periodically wipe the cabinet with a damp cloth and mid detergent Do not use abr...

Page 4: ...A Your Meters Feature Model UT56 OPERATING MANUAL 4 ...

Page 5: ......

Page 6: ... 15 seconds maximum Measuring voltage drop Full ranges are 200mV B 4 Alternate Current Current AC Current 2mA 20mA 200mA 20A 0 1µV 1µV 10µV 1mV Range Resolution 1 2 10 Accuracy 2 5 10 0 8 10 Overload protection Below 200mA with0 3A 250V Fused No fuse protection on 20A Max current input 20A above 10A for 15seconds maximum Measuring voltage drop Full ranges are 200mV Display Average value RMS of Sin...

Page 7: ... the LCD display 1000 digits deduct the 1000 digits from the measured reading during measuring 2 At 200Ω range short the test lead first to display the resistance value of the test leads Deduct that resistance value from the measured reading to obtain the being measured object correct value B 6 Capacitance Testing Signals About 400Hz 40mVrms 2nF 20nF 200nF 2µF 20µF 0 1pF 1pF 10pF 0 1nF 1nf Range R...

Page 8: ...FE test Range Remark Measuring Condition Display Diode Forward Voltage Value unit is V Forward DC Current abt 1mA Backward DC Voltage abt3 0V Beeper sounds when Resistance 50Ω Display the nearest value unit is kΩ Voltage at open Circuit abt 3 0V Range Remark Measuring Condition hFE Can Measure NPN and PNP type Transistor Display ranges 0 1000 β Basic polarity current abt 10µA Vce abt 3 0V Model UT...

Page 9: ... jack 1 If there is no display or is shown on the LCD when the Meter is switched on replace the battery ASAP 2 Never exceed the maximum input voltage or current limits shown besides the input jacks otherwise the Meter will be damaged and this is dangerous to life 3 Turn the rotary switch to proper range before operating Model UT56 OPERATING MANUAL 9 ...

Page 10: ...e LCD which means the Meter is overloaded then set the measuring range to higher 3 means never exceed the maximum input limit 1000V otherwise internal circuit of the Meter will be damaged 4 Take extra care of voltage leakage when measuring high voltage C 2 Measuring AC Voltage 1 Connect the black test lead to COM jack and red test lead to V jack 2 Set the rotary switch to V 3 Connect the test lead...

Page 11: ...ing below 200mA connect the red test lead to mA jack When measuring 20A or below connect the red test lead to 20A jack 2 Set the rotary switch to A 3 Connect the test leads in series with the object to be measured 1 Please refer to DC Current Caution 1 2 3 Caution 1 If magnitude of the current is unknown always start with the highest range and reduce until satisfactory reading is obtained 2 If 1 i...

Page 12: ...thout voltage and discharge all high voltage capacitors 4 At 200MΩ range test lead is short circuit it has 1000 digits which need to be deducted from the reading when making measurement For example when measuring 100MΩ it displays 110 00 1000 digits need to be deducted means 110 00 10 00 100 00MΩ 1 Connect the black test lead to COM jack and red test lead Ω jack 2 Set rotary switch to Ω 3 Connect ...

Page 13: ...ss with the object being measured The reading is diode forward voltage drop nearest value 3 Connect the test lead to two ends of the object being measured the beeper sounds if the resistant value between the two ends is below 50Ω C 9 Measuring Transistor hFE 1 Set rotary switch to hFE 2 Identify NPN or PNP type connect objects to the correspondent transistor jack 3 LCD appears the hFE nearest valu...

Page 14: ...ange the circuit of your Meter on your own Take a note of the following few points 1 Do not connect to DC Voltage above 1000V or AC RMS above 750V 2 Do not input voltage when the rotary switch is in Current Range Ω 3 Do not operate the Meter if battery is not inside or bottom cabinet is not securely screwed 4 Disconnect the test leads and power off the Meter before replacing the Battery and Fuses ...

Page 15: ... of tilt stand see diagram 2 3 Set holster in a large angle on the table tilt it up by all two parts of tilt stand see diagram 3 figure1 figure2 figure3 G Using Strap 1 Put the front end of the strap through the round metal of the Meter see part 1 of the below diagram 2 Put the bottom end of the strap through the front part and tide it up see part 2 of the below diagram Model UT56 OPERATING MANUAL...

Page 16: ... END The manual is subject to changes without separate notice Model UT56 OPERATING MANUAL 16 ...

Page 17: ...Development District Hu Men Town Dong Guan City Guang Dong Province China Headquarters Uni Trend International Limited Address Rm901 9 F Nanyang Plaza 57 Hung To Road Kwun Tong Kowloon Hong Kong Tel 852 2950 9168 Fax 852 2950 9303 Email info uni trend com http www uni trend com Model UT56 OPERATING MANUAL 17 ...

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