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CX-920A Schematic Diagram

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Summary of Contents for CX-920A

Page 1: ...ER o o o i 2OI F 2iJF 200nF ZOOI F 10 2ilnF 200J 200J iJF pF 200 pF OFF I OFF TO CONVERT nF TO IF MOVE DeCIMAL LEFT 3 PLACES mF TO F Move DECIMAL RIGHT 3 PLACES CX 920A Lc J c J DISCHARGE CAPACITOR BEFORE CONNECTING w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 2: ...3112 Digit LCD 0 55 H Zero Adjustment 2IXM 2lXIJ F 20 mf TO CONVERT nF TO IIF MOVE DECIMAL LEFT 3 PLACES mF TO IF MOVE DECIMAL RIGHT J PLACES CX 920A S t I l Lt DISCHARGE CAPACITOR BEFORE CONNECTING 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 3: ...e CX 920A a truly portable in strument Model CX 920A Specifications General Display 3 Y digit LCD 0 55 H with polarity Overrange Indication A 1 with the 3 least significant digits blanked Operating Environment O C to 50 C below 70 relative humidity Storage Environment 20 C to 6O C battery removed and below 80 relative humidity Temperature Coefficient 0 1 x specified accuracy per C which is only ap...

Page 4: ...ds together This will cause a large power drain on the battery and will show an overrange on all r 3nges Capacitance Measurement 1 Insert any test leads or fixtures and rotate range selector to a range on the capacitance scale higher than the expected capacitance to be measured 2 If the 200 pF 2000 pF or 20 nF range has been selected and the display does not read zero use the zero adjust knob to b...

Page 5: ...apacitance Test Method To test a large unknown capacitance of more than 20 000 I F use the following procedure 1 Select a capacitor with a known value over 10 000 I F and as close to 20 000 I F as possible this value becomes Ck 2 Place the unknown capacitor Cx in series with the known value capacitor see Figure 1 3 Measure the capacitance of this series combination The measured value becomes Cs 4 ...

Page 6: ...CE MENT DISCONNECT TEST LEADS FROM ANY ENERGIZED CIRCUITS TO AVOID SHOCK HAZARD 1 Remove the two 2 screws in the rear cover of the case and lift the back off from the front section 2 Replace battery with a 9 V battery and be sure to observe polarity 3 Carefully replace the rear cover and replace the two 2 screws Fuse Replacement 1 Remove the two 2 screws in the rear cover of the case and lift the ...

Page 7: ...CX 920A Schematic Diagram 11 I ii i I I 88 i 0000SO000000 6 1 il Ii I l w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 8: ... lilt o 0 0 0 ROJ RI 0 0 12 COJ fmO It D D D O IJ 0 4233 51760 0 o u 000 O UO I 001 iHO O tJO OOOOO RO D OJO Q2D 0 Oll 0 c J 0 DeoD 0 D l lIOD 02100 002 002 00 tJ J 0 co r i Ueo D L I n W co lA 250Y 00 C01 D 004 005 7 v w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 9: ... defect in material or workmanship NTE Electronic Inc s liability is limited in its sole discretion to the repair or replacement of the UNIT with a new or reconditioned model of equiva lent quality In the event of replacement with a new or reconditioned model the replacement will continue the warranty period of the original UNIT IN NO EVENT WILL NET ELECTRONIC INC OR ITS AGENTS BE LIABLE FOR ANY I...

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