22threshold circuitry of the menu microphone. It should normally be set to NRML.Occasionally, the inbound audio volume will decrease when C1060 headsets are used in TalkLock mode. Set jumper J10 to HIGH, in this case only.HIGH – Jumper the left two pins ONLY if a decrease in inbound volume is noticed whileC1060 headsets are being used in Talk Lock mode.NRML – The Normal setting is used for all configurations except those mentioned in “HIGH.”! ImportantAfter changing any jumper setting(s), be sure to press the RESET SWITCH onthe base station circuit board to “read” the change into the microprocessor.Adjustment ControlsMENU MIC SENS Controls the volume of the menu sign audio heard in the headset.HEADSET ALERT LEVEL Controls the volume of the alert tone heard in the headset.DAY Controls the volume heard at the menu sign with the Day/Night switch inthe Day position.NIGHT Controls the volume heard at the menu sign with the Day/Night switch inthe Night position.MON VOLUME Master volume control for the following functions heard through theoptional monitor speaker:MON ALERTMON INMON PAGEMON TALKControls the alert tone level.Controls the audio level coming from the menu sign.Controls the page audio level coming from the headset/belt packmicrophone.Controls the talk audio level coming from the headset/belt packmicrophone.*NoteIf any of the monitor functions are not desired by the customer, turn the appropriate adjustmentcontrol completely counterclockwise to silence that particular function.IndicatorsPOWERCHANNEL 1–8LOOP FAILUREDETECTOR POWERNRMVEHICLETALKPAGELights when power is applied to the base station.Lit LED indicates which channel is selected for base station operation.(Optional) Flashes if vehicle loop fails.(Optional) Lights if optional Loop Detector is functioning.(Optional) Flashes slowly if optional noise reduction module is functioning.Lights when a vehicle is detected at the menu sign.Lights during communication between headset/belt pack and menu sign.Lights during paging from headset/belt pack.