The GR-1 is a precision time code generator / reader designed for production sound recording. The GR-1 can be used as a stand-alone master time code source in most recording environments. Low power consumption even with back lighting assures users of a long battery life in a small reliable package. Speed checking and memory hold are powerful features that help sound mixers on the set.Features:READ: SMPTE / EBUDISPLAY: Time code/user bits and mode are displayed on a low power LCD backlight display.HOLD: Hold points are saved in memory and can be scrolled with the up / down buttons.GENERATE: 24, 25, 29.97, 30 fps drop and non drop time codes.CLOCK: An internal time of day clock updates the code on every power up.JAM: syncs to external code and can cross jam different codes.REMOTE: Power, hold, in, out, and start stop code are accessible in a 9 pin D connector.LOW BATTERY: indicatorSpecifications:SIZE:5.9" x 4.25" x 1.55"WEIGHT: 1.3 lbsBATTERY: 6 AA Internal battery supply. Battery life aproximately 60 hours. 1 BR2325 3V memory backup. Battery life approximately 1 yearSTABILTY: + / - 3ppm -10 to +60 CINPUT: Reads code down to -10db with 10k input impedanceOUTPUT: 2 volts into 1k load impedancePOWER: 6 to 18v DC at 15ma (backlight off) 30ma (backlight on)