Icom IC-T7H Instruction Manual

Also see for IC-T7H: Instruction manual Service manual

5OTHER FUNCTIONS25D Power saver duty cycleThis item sets the power saver dutycycle — the ratio of receive circuit ONto receive circuit OFF while standingby. The duty cycle can be set toAUTO, 1:4 or OFF. Setting to AUTOconserves the most battery power.D Battery voltage indication ON/OFFThis item sets the battery voltageindication ON or OFF. When set toON, the battery voltage is indicatedfor 2 sec. at power ON (LOW V, 4.5-–16 V in 0.5 V steps). If the voltagesurpasses 16 V, “OVER V” appearsand flashes regardless of this setting.D DTMF speedWhen slow DTMF transmissionspeeds are required (such as forsome repeaters) the transceiver’srate of DTMF transmission can beadjusted.D LCD contrastThis item sets function display con-trast to one of 2 levels. “1” is for lowcontrast and “2” is for high contrast.fastest (100 msec. intervals)slowest (500 msec. intervals)low contrasthigh contrastAUTOSelects “1:4” duty ratiowhen receiving no signal for5 sec., then “1:8” 60 sec.after that.1:4 Standby : 125 msec.circuit idle : 500 msec.OFF No power save function.The power saver is deacti-vated when more than 12V DC is connected to the[DC13.5V] jack.