Specifications

USING THE TERMINAL KEYS
Data Entry Modes
28 OMNI 37XX REFERENCE MANUAL
Data Entry
Modes
Before you can use the keys on the front panel to enter ASCII characters, the
Omni 37xx must be in a mode that accepts keyed data entry. There are two
terminal operating modes, each enables you to press keys to enter data under
specific circumstances:
• Normal mode: This is the terminal operating mode where an application
program is present in memory and currently running.
• System mode: This is a special, password-controlled terminal operating
mode for performing a variety of test and configuration procedures that cannot
be performed when an application is running.
If you turn on an Omni 37xx terminal that does not have an application stored in
memory, the system prompt
DOWNLOAD NEEDED appears. You can enter system
mode by simultaneously pressing F2 and F4, and then entering the password.
Once in system mode, you can configure the terminal as required and perform the
necessary download.
If you turn on an Omni 37xx terminal with an application stored in memory, the
application executes and the terminal automatically enters normal mode. The
application then controls how terminal keys–including the programmable function
(PF) keys and the ATM-style keys–process transactions and when you can use
specific keys to type characters or respond to prompts.
The Keypad
The keypad is a 13-key arrangement, consisting of a 12-key Telco-style keypad
and the ALPHA key (Figure 13).
Using the keypad, you can enter up to 50 ASCII characters, including the letters
A–Z, the numerals 0–9, and the following 16 special characters: (*), (,), (‘), (“), (-),
(.), (#), (%), (:), (!), (+), (@), (=), (&), (space), and (/).
NOTE
If you enter system mode while a terminal application is running in normal mode,
system mode preempts the application and takes control of the display and
keyboard. The preempted application continues to run in the background, but does
not accept user input. The only way to exit system mode is to restart the terminal.
For this reason, once you enter system mode, you cannot return to the application
in the same session.
NOTE
If an application is in terminal memory, the default system password into system
mode may have been changed. If so, you must press a special key combination
and then type in the required system password to enter system mode. The
behavior of key entries depends on the specific active system mode menu.
NOTE
The system mode functions described in the next section require that you enter
numbers, letters, or symbols using the keypad.