Keypad With Data Entry Array - Comtech EF Data SLM-5650A Installation And Operation Manual

7.1.1

Keypad with Data Entry Array

The front panel keypad (Figure 7-1, items 2 and 3) controls the local operation of the modem.
Enter data via the keypad. Data, prompts, and messages appear on the VFD.
The buttons (keys) have a positive 'click' action that provides tactile feedback.
The modem responds with audible 'beeps' whenever you press a key:
•
A single 'beep' indicates that an entry was valid and provides you with confirmation that
a proper action was taken;
•
A double 'beep' indicates that an entry was either invalid, or that a feature or parameter
is not available for operation.
The keypad has an auto-repeat feature. If you hold a key down for more than
three seconds, the key action repeats automatically at the rate of seven
keystrokes per second. This is particularly useful when editing numeric fields
with many digits, such as Frequency or Data Rate.
Each of the 18 keys provide one or more logical functions:
•
Use the [ENT] (Enter) key to select a displayed function or to execute a unit configuration
change.
•
Use the [CLR] (Clear) key to back out of a selection or to cancel a configuration change
that has not been executed using [ENT]. Pressing [CLR] generally returns the display to
the previous selection.
•
Use the  (LEFT) and  (RIGHT) keys to move to the next selection or to move the
cursor functions. At times, they may also used to move from one section to another.
•
Use the  (UP) and  (DOWN) keys to change configuration data (numbers). You may
also use these keys to move from one menu section to another.
•
Use the 12 alphanumeric keys as follows:
COLUMN 1
1 (Space)
4 (GHI)
7 (PQRS)
Front Panel Operation
COLUMN 2
2 (ABC)
5 (JKL)
8 (TUV)
7–2
SLM-5650A Satellite Modem
COLUMN 3
3 (DEF)
6 (MNO)
9 (WXYZ)
Revision 10
COLUMN 4
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MN-SLM-5650A