14 Clamp-on Ground Resistance Tester Model 64172.8 Button FunctionsButton Description▲• When the rotary switch is set to W+A or A: Increases the brightnessof the display, making it easier to read the display in an environment withstrong background illumination. Highlighting activated for 30 seconds.• When the rotary switch is set to SET-UP or MR: Serves as the ▲arrow when browsing in the menus and values. The brightness of thedisplay does not change when device is set to SET-UP or MR.MEM▼• When the rotary switch is set to W+A or A: Records the measuredvalue. All of the data is recorded in the Standard or Advanced mode.• When the rotary switch is set to SET-UP or MR: Serves as the ▼arrow when browsing in the menus and values.►• When the rotary switch is set to W+A (Advanced Mode):Short Press: Switches the display through the following three modes:- Display of the impedance recalculated at the selected frequency.- Display of the contact voltage (product Z*I).- Display of R and L.Long Press: Enables or disables the audible alarms.• When the rotary switch is set to SET-UP:- Validation when browsing in the menus and values.• When the rotary switch is set to MR (Advanced Mode):- Switches the display through the measurement screens and themeasurement date/time.HOLD&AUTO-HOLD• When the rotary switch is set to W+A:- Freezes the displayed measurement for as long as the HOLD buttonis pressed. The NOISE, clamp open ( ), and alarm exceedence ( )icons are visible, if they were active.• When the rotary switch is set to MR or SET-UP:- Enables or disables the Bluetooth® connection.• AUTO-HOLD Function:If the AUTO-HOLD mode was enabled during instrument SET-UP (see§ 4.4, menu #11), opening the clamp acts as the identical state to theHOLD mode for as long as the clamp is open. The benefit of this functionis that it makes it easy to freeze the measurement with one hand, whenaccess to the HOLD button is difficult.If the HOLD button is not pressed during this time, closing the clampautomatically exits the AUTO-HOLD mode.www. GlobalTestSupply .comFind Quality Products Online at: sales@GlobalTestSupply.com