If [MEMORY Error!] appears, it is the sign that the
memory has a trouble and needs memory replacement (fare-paying).
Please contact your nearest distributor or send us an e-mail (overseas@ONO SOKKI.co.jp)
The FT-2500 uses non-volatile memory to store parameters. A non-volatile memory has a limitation of rewritable frequency. Under general using condition, the number of rewriting will not exceed 1 million times which is the maximum rewritable times of the non-volatile memory used in this model. However, it shall not be applied with the case which you often send a numerical value setting commands via RS232C.