Audible Alarm; Removal - IBM 3270 Operator's Manual

106
Extras for the 3270
Removal
Audible Alarm
The key must remain in the lock as long as you wish to operate
your display station. Also remember to remove the key if you
are going to be away from your display station for a long period.
The key cannot be removed while in the on position, and turning
it off immediately blocks all entry or retrieval of information.
3270 display stations can be equ ipped with an audible alarm.
This is a feature of your display station that can't be seen but
that you should be aware of.
A high-pitched tone sounds for about 1 second every time the
audible alarm is activated.
The audible alarm always sounds when you enter a character
into the next to last character position on your screen. The
cursor wraps from the last character position on the screen to the
first character position on the screen after a character is keyed
into that last position. This is normal operation. If you key
another character after the cursor has wrapped, it will be entered
into the first character position on line 1 of your screen. In this
situation, you wouldn't want to key on line 1 because doing so
would destroy the data already displayed there. In this case, the
alarm is a warning to you.
The computer program that you are working with also can
activate the alarm. To do so, it sends a signal to your display
station. The User's Guide for that program will tell you if the
audible alarm will sound and, if so, the different reasons for
sounding it.
The volume of the audible alarm is adjustable. The adjustment
control knob is located behind the front cover of the display
station, as shown in Figure 44. Generally, you will not have to
adjust the volume once it has been set for your operating
environment.
If you want to change the volume of the alarm, first remove
the display station front cover. If your display station has a small
screen, like the one shown in Figure 46, remove the front cover
by lifting upward on the latch under the front edge of the cover,
where the cover meets the table top. Then, turn the audible
alarm adjustment knob to the right to raise the volume or to the
left to lower it, as required. If you are operating a large-screen
display station, unlatch the front cover by pushing down on the