Operation
4. Press the [PRIOR] key and the following prompt appears:
Save changes to menu "Position loop parameters"? (yes/no)
[YES/NO] changes YES/NO response. [ENTER] accepts displayed YES/NO
response.
5. To save the changes, toggle the YES/NO key to YES and press [ENTER].
5.8.6.7 Built-in Simulator Setup
The ACU has a simulation program that can be used for training purposes or to
become familiar with the system before beginning operation of the system. The
simulation program can also be used for testing an M&C interface. For normal
operational purposes, the Operation mode under this menu should be set to Live.
To edit the Operation mode, use the following procedures.
1. From the Main menu, select Edit system configuration... and then select Built-in
simulator setup....
2. To change Operation mode use the arrow keys to move the cursor to the
parameter and press [ENTER]. Using the up and down arrow keys, toggle
through the preprogrammed choices. When the desired choice is highlighted,
press the [ENTER] key.
3. Press the [PRIOR] key and the following prompt appears:
Save changes to menu "Built-in simulator setup" and reboot the ACU? (yes/no)
[YES/NO] changes YES/NO response. [ENTER] accepts displayed YES/NO
response.
5.8.6.7.1 Antenna Simulator Setup
When in Simulation mode, the ACU reads a simulated set of inputs and writes
output to the simulator. The simulator provides change in resolver feedback based
on the outputs, at a rate determined by the parameters listed in Table 5-32. Note
that these rates are unrealistically high -- they are set high to verify that the
commands are transmitted properly during testing of an M&C interface. The high
rates allow the ACU to move to a new target rapidly. For training purposes,
General Dynamics advises that the rates be set to more realistic values.
NOTE: The resolver excitation signals are active in Simulation
mode (i.e., the resolvers are powered).
5-62
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