BHT-805B[3] Scale testUse the following procedure to perform a scale test.1. Select “3: BEEPER” at the TEST menu and then press the ENTkey.The screen displays as shown on the right, and the beeper sounds at thethree octaves listed below.Upon completion of this test, the BHT automatically returns to the TESTmenu.To stop the speaker scale test while in progress, turn the BHT OFF.Scale Frequency (Hz)do 523 1046 2093 4186re 587 1174 2349 −mi 659 1318 2637 −fa 698 1396 2793 −sol 783 1567 3135 −la 880 1760 3520 −ti 987 1975 3951 −[4] Aging testUse the following procedure to perform an aging test.1. Select “4: AGING” at the TEST menu and then press the ENT key.The aging test begins and the current date and time display on the screen.(This test is intended for personnel responsible for checking the BHT at thefactory.)- Point - The Auto OFF function is disabled during the aging test. Toabort the test, press the BS/C key to return to the TESTmenu, or turn the BHT power OFF.92