JRC JMA-9922-6XA Instruction Manual page 165

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3 Checking Receiver System
Checking Procedure
⑤
⑥
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The maximum range of the PM pattern on display indicates a deterioration of the
sensitivity of the receiver system.
Measure the PM pattern displayed on the display using the VRM of the maximum range
'max' from the PPI sensor.
Obtain the degree of sensitivity deterioration R (rmax) corresponding to 'rmax' using the
calibration curve II and indicate the degree of sensitivity deterioration of the current
receiver system.
Maximum range of RM pattern (rmax)
Calibration curve II
Figure 3
3-93