Micro-29 (140-1059) Power Sources Faxback Doc. # 7724 USING AC POWER To power the Micro-29 from an AC outlet, you need an AC adapter, such as Cat. No. 273-1456. CAUTIONS: You must use an adapter that supplies 3 volts DC power and delivers at least 200 milliamps. Its center tip must be set to negative, and it must have a plug that properly fits the Micro- 20's DC 3V jack. Using an adapter that does not meet these specifications could damage the Micro-29 or the adapter. Be sure you connect the adapter to the Micro-29 before you plug it into the AC outlet, and that you unplug the adapter from the AC outlet before you unplug it from the Micro-29. Otherwise, the unconnected plug might touch a metal object and damage the adapter. To power the Micro-29 from an AC outlet, insert the adapter's small plug into the Micro-29's DC 3V jack. This disconnects the internal batteries. Then plug the adapter into a standard AC outlet. USING VEHICLE BATTERY POWER To power the Micro-29 from your vehicle's battery power, you need a DC adapter, such as Cat. No. 270-1560A. CAUTIONS: Your vehicle must have a 12-volt, negative-ground electrical system. You must use an adapter that supplies 3 volts DC power and delivers at least 200 milliamps. its center tip must be set to negative, and it must have a plug that properly fits the Micro-29's DC 3V jack. Using an adapter that does not meet these specifications could damage the Micro-29. Be sure you plug the adapter into the Micro-29 before you plug it into the cigarette-lighter socket, and be sure you unplug the adapter form the cigarette-lighter socket before you unplug it from the Micro-29. Otherwise, the unconnected plug might touch a metal object and damage the adapter or your vehicle's electrical system. Follow these steps to power the Micro-29 from your vehicle's battery power. 1. Set the adapter's voltage switch to 3V. 2. Plug the orange-tipped barrel plug into the adapter's cord with the tip set to negative (-). 3. Insert the barrel plug into the Micro-29's DC 3V jack. 4. Plug the other end of the adapter into the vehicle's cigarette-lighter socket. (ALL-9/29/94)