190-01004-02 GTN 625/635/650 TSO Installation ManualRev. F Page 6-456.9.5.4 Transponder Installation Settings PageAccess the XPDR Installation Settings page, asshown in Figure 6-43, by touching the‘Installation Settings’ key from the XPDRConfiguration page.VFR BUTTON CODEInput a VFR transponder code by touching thekey and typing the selected code into thekeypad. This field has a range of 0000-7777.NOTEAvoid selecting code 7500 and all codes in the 7600-7777 range. These codes triggerspecial indicators in automated facilities. An aircraft’s transponder code is used for ATCtracking purposes, therefore exercise care when making routine code changes.AIRCRAFT WEIGHTSelect the weight of the aircraft in which the transponder is installed.AUTO STANDBY DELAYThis is the number of seconds the aircraft must be on the ground before the transponder automaticallyswitches to GND mode when it has a means of determining the aircraft is on the ground. It has a range of 0(zero) seconds to 99 seconds.The default value of 24 seconds is a nominal value for most aircraft. Thisvalue can be changed depending on the types of operations the aircraft is expected to encounter.ALTITUDE CLIMB RATE FOR AIRBORNE TRANSITIONThis is the climb rate that is required in order to transition from ground to airborne state. This field isadjustable from 100 fpm to 9999 fpm.This field should be set to the typical vertical speed climb rate of theaircraft. This number determines the rate of climb necessary for the GTN to assume lift-off for detecting anairborne state. Refer to the Pilot’s Operating Handbook (POH) to determine this value. If the POH does notinclude aircraft climb rate information, use the default value of 300 fpm.Selection Description<15,500 LBS Configures the aircraft weight to less than 15,500 lbs.>=15,500 LBS Configures the aircraft weight to equal to or greater than 15,500 lbs.ROTORCRAFT Configures to rotorcraft use.UNKNOWN Aircraft weight is unknown.Figure 6-43. Remote XPDR Configuration Page
