Comtech EF Data SDM-2020 - Manual (Page 68)

SDM-2020 Satellite Demodulator Revision 4
Front Panel Operation MN/SDM2020D.IOM
6–4
6.1.3 Front Panel Keypad
The front panel keypad (Figure 6-2), permits local operation of the demodulator. The
keypad consists of six keys. Each key provides one or more logical functions.
ENTER
CLEAR
Figure 6-2. Keypad
ENTER This key is used to select a displayed function or to execute a demodulator
configuration change.
CLEAR This key is used to back out of a selection or to cancel a configuration
change which has not been executed using . Pressing
[CLEAR] generally returns the display to the previous selection.
Left and Right
Diamond Keys These keys are used to move to the next selection or to move the cursor
for certain functions.
Note: Throughout this chapter, [
←] and [→] are used to indicate left and
right diamond keys.
Top and Bottom
Diamond Keys These keys are used primarily to change configuration data (numbers).
At times, they are also used to move from one section to another.
Note: Throughout this chapter, [
↑] and [↓] are used to indicate top and
bottom diamond keys.
The demodulator responds by beeping whenever a key is pressed:
• A single beep indicates a valid entry and the appropriate action was taken.
• A double beep indicates an invalid entry or a parameter is not available for
operation.