48 RAYDATA Installation and Operation HandbookSea TemperatureTo display this page, press DEPTH from the Main Depth page.D3039-1This page shows the current sea surface temperature in °F or °C,depending on the choice made in the Setup pages (see Chapter 4).The temperature response is also determined by the Setup selection.An alarm indicator is displayed at the bottom of any screen if thetemperature value is outside the specified safe range.Temperature AlarmTo display this sub-page, press ÙÙÙÙÙ from the Temperature page.This page shows the current settings for the upper and lower valuesthat will set off a temperature alarm or, if the alarm has been turned off,the text “ALARM OFF”. The units are the same as those for the maintemperature value.Press and hold ÚÚÚÚÚ and ÙÙÙÙÙ together for three seconds to toggle thealarm either from off to on or from on to off.This page and its associated adjust pages are identical to those for theanchor alarm described on the previous page, except that they dealwith the temperature. Refer to Chapter 5 for detailed information aboutusing and setting alarms.