TB 9-6625-2327-35
NOTE
The factory default secure code is AT33250A. If the secure
code has been changed and is now unknown the manufacturer's
manual, section 4, describes how to unsecure the instrument
without a security code.
(26) Enter the secure code using the knob to change the displayed character, and the
arrow keys to move to the next character.
(27) Press Secure key and Done key.
(28) Perform paragraphs 8 a through 12 a to verify that alignment was successful.
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.