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JMA-9172-SA Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.3  ADJUSTMENT
7.3 ADJUSTMENT
This section describes the electrical adjustment procedures to be performed by 
service engineers during system installation.
7.3.1 Noise Level Adjustment (Noise Level)
7.3.1.1 Noise Level Adjustment for Signal Processing
1) Open the Serviceman Menu.
2) Perform the following menu open procedure to open the noise 
level adjustment menu.
→ 
→ 
3) Increase/decrease the noise level adjustment value.
The noise level is factory-set. (Initial value: 140)
After system installation, a great change in the noise level adjustment value should be 
avoided; it should be fine adjusted within ±5.
 
Do not carry out the adjustments of the equipment 
except authorized service persons. If wrong setting is 
carried out, this may cause unstable operation.
Do not carry out the adjustments during navigation. 
Otherwise, the radar performance may be affected, 
resulting in an accident or trouble.