HP NonStop G-Series - Manual (Page 96)

5157/5157 ACL S-Series DLT Subsystems Installation Users Guide
Operating the 5157 ACL Tape Drive 6-7
Note: There is an auto-repeat feature for the ù and ü buttons.
When the user passes either button for more than one-half second,
the control panel behaves as if the user were pressing and releasing
the button four times per second. This effect stops when the user
releases the button.
6.4 Front Panel and Media Locks
To avoid accidental interruption of module operation by entering
the Menu Mode while the host is accessing the module, the control
panel may be electronically locked.
The control panel may be locked using the Security Menu, which is
described later in this chapter. Once the control panel is locked, the
operator must use an unlock code to enter the Menu Mode. The
control panel lock prevents access to the Unlock Door item on the
Main Menu, so in effect it locks the media as well. Refer to the
information on the Security Menu in “Navigating through the Menu
Structure” in Section 6.10.
The media may be locked by software running on the host, using
the SCSI Allow/Prevent Medium Removal command. The 5157
ACL provides no control panel override for this command. Exiting
the host the user can restore media access by cycling 5157 ACL
power.
6.5 Display Messages
The display on the control panel is capable of displaying four lines
of 20 characters each, to allow the use of easy-to-understand
messages. Many of these messages and their functions are described
in this chapter. Those displays that are described in other chapters
are also cross-referenced here.