JRC JMA-5212-4/6 User Manual page 338

x With the JMA-5212 radar:
For this model, perform Tune Peak Adjustment and Tune Indicator Adjustment explained below.
After the above adjustment procedure, perform the adjustment procedure below.
[II] Tune Peak Adjustment
Adjust the tune indicator and echo peak.
Procedure 1
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Note: Always set the tune peak adjustment value to 64.
When the equipment is used for a long time and the automatic tuning function no longer works properly,
adjusting the tune peak adjustment value may result in improvement of the automatic tuning function.
It should be noted that an optimal adjustment value is required for proper operation of the automatic
tuning function.
Set the range to 24 NM or more.
Hold down [RADAR MENU] key.
The CODE Input screen opens.
Press [0] key.
The numeric keypad screen opens.
Place the cursor over the "ENT" button
of the numeric keypad and press [ENT]
key.
Adjust Menu opens.
Press [4] key.
TXRX Setting menu opens.
Press [2] key.
The Tune Indicator numeric keypad screen opens.
Adjust the tune peak value until the tune indicator bar at the top left
corner of the screen reaches maximum by inputting a value with the
number keys or by turning the multi-dial to change the value.
Place the cursor over the "ENT" button and press [ENT] key.
The tune peak value is memorized and the peak adjustment is complete.
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