Operation Manual

● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
3-93
３
3 Checking Receiver System
The maximum range of the PM pattern on display indicates a deterioration of the
sensitivity of the receiver system.
Checking Procedure
⑤ Measure the PM pattern displayed on the display using the VRM of the maximum range
‘max’ from the PPI sensor.
⑥ 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.
Figure 3
Calibration curve II
Sensitivity deterioration R (rmax)
Maximum range of RM pattern (rmax)