Hitachi L-8900 Service Manual page 56

8d. Click the Auxiliary trace tab, put a Check mark to
* By using the Monitor display, pressure variation of Pump, and temperature
precision can be checked.
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8e. Click the Baseline Check tab, and set the Baseline check time at 1 minute.
Set the Baseline check time finishing time at 1 minute.
Choose Noise calculation method, and ASTM method.
Put a Check mark for
value.
Put a Check mark for
VIS 1 effective noise test, and input 150 for
VIS 2 effective noise test, input 600 for
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Pump pressure, temperature.
Threshold value.
Threshold