6 Ground Resistance Tester Model 3620CHAPTER 2PRODUCT FEATURES2.1 Control Features!ZYXC1 P2 C2I N S T R U M E N T SΩPress ToMeasureX-Z FaultX-Y Hi ResistanceX-Y Hi NoiseGROUND RESISTANCE TESTERMODEL 3620REFER TO USER MANUALFOR FAULT WARNING LIGHTEXPLANATIONS0.5251k®2 43 5167891011Figure 11. Press-to-measure button 7. Zero adjustment screw2. Input terminal X (C1) 8. Low battery indicator3. Input terminal Y (P2) 9. X-Y hi noise indicator4. Shorting link 10. X-Y hi resistance indicator5. Input terminal Z (C2) 11. X-Z fault indicator6. Display