Getting Started Battery Information The device operates on two AA batteries. Use alkaline, NiMH, or lithium batteries. Use precharged NiMH or lithium batteries for best results ( page 33 ). Setting Your Language 1 Turn on the unit. 2 Use the Rocker to select a language. Installing the Batteries 1 Slide the latch on the back of the device, and remove the battery cover. 2 Insert the batteries, observing polarity. Acquiring Satellite Signals It may take 30 to 60 seconds to acquire signals. 1 Go outdoors to an open area. 2 If necessary, turn on the device. 3 Wait while the device searches for satellites. A question mark flashes while the device determines your location.
4 Quickly press to open the backlight status page. The GPS bars indicate satellite strength. When the bars are green, the device has acquired satellite signals. 3 Replace the battery cover. For best results, after you install new batteries, update the battery type in the system settings ( page 37 ). Turning the Device On or Off Press and hold . GPSMAP 78 Series Owner’s Manual 3