Sokkia 30R Series Operator's Manual page 137

Time out
Measuring conditions are poor, and due to the insufficient amount of reflective
light, measuring could not be carried out within the time specified.
Resight the target. When using reflective prisms, effectiveness will be
improved by increasing the number of prisms used.
Too short
Input password has fewer than 3 characters. Password must have 3 or more
characters and 8 or fewer characters.
If the printer cable is attached during measurement, measurement cannot be
carried out correctly. SET notifies you by displaying the screen above and
beeping. When the cable is removed, the previous screen is restored.
If connected SDR or host computer is turned Off, the above screen appears.
This is normal, and does not indicate trouble. If connected SDR or host
computer is turned On again or cable is connected again, the previous screen
is restored.
25. WARNING AND ERROR MESSAGES
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