REED CM-9930 Скачать руководство пользователя страница 8

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8

Operating Instructions

DC/AC Measurements

Connect the Black test lead into the COM terminal. Connect the Red test 
lead into the V terminal. If measuring DC, move the function rotary switch 
to the V position and press the function button until the display shows 

 

. If measuring AC, move the function rotary switch to the V position 

and press the function button until display shows 

.

Resistance Measurement 

Connect the Black test lead into the COM terminal. Connect the Red test 
lead into the Ω terminal. Move the function rotary switch to the Ω position 
and press the function button until the display shows Ω.
Note: When LCD displays

, the meter is in auto range 

mode, meaning the meter will now automatically select the suitable 

 

measurement range. While in auto range mode, press the range button to 
hold the range.

Continuity Check 

Connect the Black test lead into the COM terminal. Connect the Red test 
lead into the Ω terminal. Move the function rotary switch to the   position 
and press the function button until the display shows 

.

Note: A beep will sound when the resistance value is less than 10 ohm 

Diode Test 

Connect the Black test lead into the COM terminal. Connect the Red test 
lead into the 

 terminal. Move the function rotary switch to the 

 

position and press the function button until the display shows 

a) When connected with the polarity as shown in Fig. 1, a forward 

 

current flow is established and the approximate diode forward 
Voltage (VF) value, in volts, will appear on the display. If the diode 
under test is defective a value near .000 (short circuit) or 1 (open 
circuit) will be displayed. 

Содержание CM-9930

Страница 1: ...reedinstruments www com Model CM 9930 True RMS AC DC Clamp Meter Instruction Manual...

Страница 2: ...t 8 Continuity Check 8 Diode Test 8 9 AC Current Measurement Clamp on 9 DC Current Measurement Clamp on 9 AC Current Measurement Direct input 10 DC Current Measurement Direct input 10 Capacitance Meas...

Страница 3: ...ways switch the function rotary switch to the OFF position when the instrument is not operation Remove the battery if the instrument will not be used for an extended period of time Even though the ohm...

Страница 4: ...ers Specifications Display 15mm 0 6 4 digit LCD max indication 4000 Measurement Range AC DC ohms diode Hz capacitance duty cycle and continuity beeper Polarity Automatic Switching indicates negative p...

Страница 5: ...Clamp on 400A 0 1A 2 5d AC DC 2000A 1000V 2000A 1A 2 8d Ohms 400 ohm 0 1 ohm 1 5d AC DC 400V 4K ohm 1 ohm 40K ohm 10 ohm 400K ohm 100 ohm 4M ohm 1K ohm 2 2d 40M ohm 10K ohm 3 5 5d Capacitance 50nF 10p...

Страница 6: ...less than the 30MHz only The accuracy of the capacitance ranges are after the zero adjustment see page 11 has been executed Instrument Description 1 Clamp jaws 10 Manual range select button 2 Trigger...

Страница 7: ...ars when the automatic range mode is active Appears when the continuity beeper is active mV V Units for voltage measurements K M Units for resistance measurements Appears when the diode function is ac...

Страница 8: ...l now automatically select the suitable measurement range While in auto range mode press the range button to hold the range Continuity Check Connect the Black test lead into the COM terminal Connect t...

Страница 9: ...r to open the current sensor jaws and clamp it around the measuring conductor only DC Current Measurement Clamp on Move the function rotary switch to the 2000A position and press the function button u...

Страница 10: ...value more than 400mA otherwise the protection fuse will break When taking a direct input measurement and the meter shows a value of 0 check if the protection fuse is broken Capacitance Measurement No...

Страница 11: ...tton and the displayed value will hold and will appear Press the hold button again to release the data hold function Relative Operation While taking a measurement the meter will store the last measure...

Страница 12: ...replace the housing case Battery Replacement Caution Remove test leads before opening the battery cover 1 When the LCD display shows you will need to replace the battery 2 Loosen the screw on the batt...

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