| Service Information | The monitor command sys head standby will inform the exposure head of the head command. The head command can be one of the following: | |
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| The monitor command sys plot (init|start|pause|restart|stop|abort) will inform the exposure head of the plot command. The plot command can be one of the following: | ||
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| Operator Action | Verify the previous monitor command and enter a valid head / plot command. | |
| Causes |
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