Model 2650A/2651 Series 3.3 GHz/8.5 GHz Spectrum Analyzer USER MANUAL v 092711 Before Using the Product Please note the following described on the back panel. For safe use: 1) When abnormal sound, abnormal smell or smoke is found, stop using the product and remove the battery and AC adapter. 2) Never handle this product with wet hands to prevent risks of electric shock, fire, or damage. 3) Never use this product under lightning conditions to prevent risks of damage. 4) Never use any AC adapter other than specified, or it will cause damage. Connect the power cable only to three-terminal outlet for protection from static electricity, otherwise this product or a device under test may be damaged. 5) Never use any battery other than specified, or it may damage this product. Turn off the power and disconnect the AC adapter before removing the battery out of the battery compartment. 6) Be sure to charge the battery as specified in the instructions in this manual. Moreover, an explosion, fire or smoke may occur if battery is handled improperly. Please read the notes for handling the battery. i