Fluke 117 Fluke 114,115,117 Manual - Page 17

To detect the presence of ac voltage, place the top of the Meter close to a conductor. The Meter gives an audible as well as visual indication when voltage is detected. There are two sensitivity settings. The "Lo" setting can be used on flush mounted wall sockets, power strips, flush mounted industrial outlets and various power cords. The "Hi" setting allows for ac voltage detection on other styles of recessed power connectors or sockets where the actual ac voltage is recessed within the connector itself. The VoltAlert detector works in bare wire applications with voltages as low as 24 V in the "Hi" setting. XW Warning If there is no indication, voltage could still be present. Do not rely on the VoltAlert detector with shielded wire. Operation may be effected by differences in socket design, insulation thickness and type. Making Low Impedance Capacitance Measurements (115 & 117 only) For making capacitance measurements on cables with ghost voltage, hold qwhile turning on the Meter to switch the Meter into LoZ, (low input impedance) Capacitance mode. In this mode, capacitance measurements will have a lower accuracy and lower dynamic range. This setting is not saved when the Meter is turned off or goes into sleep mode. True-rms Multimeters Making Basic Measurements Testing Diodes (115 & 117) Good Diode Good Diode Forward Bias Single Beep Bad Diode Reverse Bias Bad Diode Open and Shorted edy07f.eps 15