AEA TDR Manuals

Copyright © 2005-2011 AEA Technology, Inc. 5933 Sea Lion Place Suite 112, Carlsbad, CA 92010 ◦ Tel 800-258-7805 or +1(760) 931-8979 ◦ Fax +1(760) 931 8969 www.aeatechnology.com AN257 TDR Soft Reset and Battery Charging Written by Paul DeWinter for: AEA Technology, Inc. Abstract If the TDR’s Soft Reset (ON + press ENTER 4-5 times) is used, it performs a number of housekeeping routines to recover any program faults and then restores the factory default settings to the TDR. However, in a number of TDRs the housekeep goes too far and will clear or set to NONE or ALKALINE the BATTERY TYPE: setting in the Battery Menu. This will inadvertently turn off the battery charger. The follow instructions are corrective steps the user can employ to avoid the TDR not recharging properly. General The Battery Menu, along with other commonly used settings, can be quickly restored by following any Soft Reset action immediately with recalling an INSTRUMENT SETUP. Saving and recalling INSTRUMENT SETUPS are covered fully in the 20/20 TDR’s Operating Manual’s Section 2, under the F4 Menu, MEMORY ACTION. The instructions contain in this Application Note are somewhat abbreviated for experienced users. Safety Precaution Before following the instructions below open the battery compartment to ensure the 20/20 TDR has NiMH or NiCd cell installed. Additionally, note the mAhr rating printed on the cells for updating the Battery Menu in step 2 below. All the cells should be the same type and rating. Any mix of alkaline cells and rechargeable cells, or NiMH and NiCd, or different mAhr ratings could cause severe overheating or cell outgassing. Instructions Ensure the Battery Menu is set correctly Steps 1. Press F2, then select BATTERY MENU. 2. Make the following settings using any ◄► keys: BATTERY SAVER: OFF or ON user’s choice. BATTERY TYPE: NICD NIMH (only choice that will enable the charger) BATT. CAPACITY: 2500MAHR (factory supplied cells. If cells have be changed check their mAhr rating on the cell and use that rating) All the remaining items in this menu are status only and can not be changed by the user.