Operation
5.8.2.5 Manual Antenna Control Function
Figure 5-10 shows a representation of the Manual antenna control screen.
Figure 5-10 Manual Antenna Control Screen
5.8.2.5.1 7200 ACU Keypad Momentary and Sticky Modes
There are two modes for use of the keypad in the Manual antenna control function:
Momentary mode and Sticky mode.
In Momentary mode, the axis is driven only as long as a direction key (arrow key)
is pressed. Therefore, Momentary mode is the "normal" mode of operation for the
keypad.
Sticky mode is used to drive the antenna for extended periods of time, such as
doing test patterns. To move the antenna in Sticky Mode hold the [+/-] key with
the desired directional key; release both keys and the antenna will continue to
move in the selected direction until one of the following conditions exists.
• the directional key is pressed again
• the opposite directional key is pressed
• the soft limit is reached (refer to Section 5.8.6.5.1)
• the keypad is returned to Momentary mode (the [+/-] key is pressed again)
To use the Sticky mode at slew rate, hold the [+/-] key with the desired directional
key; then release the keys and press [SHIFT]. Pressing [SHIFT] again will stop the
slew rate, but the keypad remains in Sticky mode.
As an added safety feature, the ACU will return the keypad to the Momentary
mode when the antenna is not being moved.
5-18
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