CONTENTS
Section Page
l GENERALINFORMATION ... ... ... 3
1.1 Features o.. ... ... ... ...3
l.l DataSummary ... ... ... ... 4
1.3 Optional Accessories ... ... ... ... 6
l OPERATION o.. ... ... ... ... 7
l.l GeneraI... ... ... ... ... 7
l.l.l Balancing the Bridge ... ... ...7
l.l. l Reading the Result ... . .. . . . . . . 8
l.l BatteryCheck... ... ... ... 0..9
l.3 Connections ... o.. ... ... ...9
Fig. l.3 Controls and Operating Faci1ities . . . . . . lO
l.4 Capacitance Measurements ... ... .'. Il
l.4.1 -using the Interna11 kc/sSource ... ... Il
l.4.l -usinganExterna1A.F. Source ... o.. 13
l. 4.3 E 1ectro1ytic C apacitors and use of Po1arizing Bias 13
l.4.4 CapacitancetoTrueEarth o.. ... ...14
l.5 Inductance Measurements ... ... ... 15
l.5.1 -using theInterna11 kc/s Source ... ... 15
l.5.l -using anExterna1A.F. Source ... ... 16
l. 5. 3 IncrementaI Inductance and use of Polarizing Bias 16
l.6 Resistance Measurements ... ... o.. lO
l.6.1 -usingtheInternallkc/sSource ... ... II
l. 6. l -using an External A. F. Source . . . o . . II
l.6.3 -using the InternaI B atte ry ... ... ... II
l.6.4 -usinganExterna1D.C. Source o.. ... l3
l.7 Connection of Externa1 A. C. Source o . . . .. l5
l.8 LossBalance-QorD... ... ... ...l7
3 CIRCUIT SUMMARY ... ... ... ... l8
3.1 Bridge Circuits ... ... ... ... l8
3. l Bridge Energizing Sources . .. . .. . . . 19
3.3 Detector ... ... ... ... ... 19
4 MAINTENANCE NOTES. . . . . . . . . . . . 31
4.1 Replacement o£the Battery ... o.. ...31
4. l Replacement of Circuit Componente . .. . .. 31
4. l. 1 Access to Interior . o. . . . . . . . . . 31
4. l. l Adjustment o£ Detector Sensitivity . . . o . . 3l
4.l.3 Oscillator Frequency ... ... ... 3l
4.l.4 RangeResistorRI3... ... ... ... 3l
CIRCUIT DIAGRAM . . . . . . inside back cover
2
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