Newport Spectra-Physics ST-200, Руководство пользователя

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System Operation 23
BNC sensitivity
10 100 1
.
10
3
1
10
100
Frequency, Hz
Sensitivity,
V/(m
m
/s)
Figure 15 BNC output sensitivity
4.1.4 Auto- Tune
The auto-tune button allows the user to retune the system. The auto-tuning
process takes normally 30 to 40 seconds. Care must be taken not to disturb
the table during this time. If there is equipment on the table that can be a
source of non-stationary vibration or noise, it should be shut down. If the
table was inadvertently disturbed by mechanical shock or loud noise during
the auto-tuning, it is recommended to repeat the process.
Beeping or tonal sounds can be heard from the dampers during the auto-
tuning process. Please have in mind that during the auto-tuning process the
table may experience higher vibrations that during the normal operation.
The controller comes pre-set for the optimal performance of the lightly
loaded table. If additional load is put on the table or, subsequently, taken
from the table, it is recommended to perform auto-tuning. Auto-tuning must
be performed also in the following cases:
•
Amber blinking lights of one or both of CH1 and CH2 status LEDs.
•
Audible sound from any of the two dampers.
4.1.5 USB Interface
The instrument is designed to communicate with standard USB interfaces.
The cable required is a USB A/ B connection cable.