GETTING STARTED 17 Battery Pack (Optional) Stores the optional battery packs for portable usage. For details, see page148. Main Power Switch, Fuse Socket, Power Cord Socket The main power switch turns on/off the GSP-830 main power. For the power up sequence, see page20. The fuse socket stores the main fuse, T1.6A 250V, time-delay, 5x20mm glass. The power cord socket accepts the AC power cord, 100 to 240V, 50/60Hz. For power and fuse related safety instructions, see page6. DC Power Input DC 12VINPUT40W MAX. DC power input, 12V, 40W max rating. Accepts a standard 2.1mm DC plug or the optional GTL-401 DC power cord. For details, see page149. VGA Output 15pin, female VGA connector which outputs 640 x 480 resolution display image to an external monitor. For details, see page111. External Trigger Input EXT. TRIG.INPUT Accepts a trigger signal from an external device. For details, see page103. Reference Output 10MHzREF OUTPUT Outputs +5V TTL, 10MHz reference signal used for synchronizing the GSP-830 with an external device. For details, see page133. Reference Input REF INPUT Accepts a TTL signal from an external device, used for synchronization with the GSP-830. For details, see page134.