Comtech EF Data SDM-2020 - Manual (Page 45)

SDM-2020 Satellite Modulator Revision 7
Front Panel Operation MN/SDM2020M.IOM
5-3
5.3 F
RONT
P
ANEL
K
EYPAD
IMPORTANT
The keypad has an auto-repeat feature. If a key is held down for more than 1
second, the key action will repeat, automatically, at the rate of 15 keystrokes per
second. This is particularly useful when editing numeric fields, with many digits,
such as frequency or data rate.
The front panel keypad permits local operation of the modem. The keypad consists of six
keys (Figure 5-2).
ENTER
CLEAR
Figure 5-2. Keypad
Each key provides one or more logical functions. These functions are defined in the
following table.
ENTER This key is used to select a displayed function or to execute a
modem 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
[ENTER]. 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.