GTN 625/635/650 TSO Installation Manual Page 6-31190-01004-02 Rev. CSURVEILLANCE INTEGRITY LEVEL (GTX 33 ONLY)NOTEWhen interfaced to the GTN, the GPS Integrity must be set to 1E-5.This field sets thecorrect GPS Integrity for the interfaced GPS receiver. Set to 1E-3, 1E-5, or 1E-7.NOTEThe GPS INTEGRITY configuration field indicates the integrity of the GPS sensor that isconnected to the transponder. It is measured in errors per flight hour, 1E-3 being theworst and 1E-7 being the best rating. This data is used in ADS-B transmissions.TEMPERATURE SWITCH INSTALLED (GTX 33 ONLY)This field determines if a temperature switch is connected to the GTX 33. Select ‗Yes‘ if a temperatureswitch is connected to the transponder; select ‗No‘ if not.6.9.5.5 Transponder Audio Configuration PageAccess the XPDR Audio Configuration page, asshown in Figure 6-36, by touching the ‗XPDR‘key on the External Systems page followed bytouching the ‗Audio Config‘ key, as shown inFigure 6-32.ALTITUDE MONITORSelect the desired audio type for the AltitudeMonitor alert. The choices are Off, Tone, orMessage.COUNT DOWN TIMERSelect the desired audio type for the Count Down Timer alert. The choices are Off, Tone, or Message.TIS ALERTSelect the desired audio type for TIS alerts. The choices are Off, Tone, or Message.VOICE SETTINGSet the voice type to male or female.VOLUMEAdjust the desired volume level for transponder audio. Volume is adjusted from 0 to +63 dB. Ensure thevolume level is sufficient for all anticipated cockpit noise environments.Figure 6-36. XPDR Audio Configuration Page
