JRC JMA-5212-4/6 User Manual page 337

[I] Tune Indicator Adjustment
Set the scale mark when the tune indicator bar reaches the maximum point.
Procedure 1 Set the range to 24 NM or more.
2 Hold down [RADAR MENU] key.
The CODE Input screen opens.
3 Press [0] key.
The numeric keypad screen opens.
4 Place the cursor over the "ENT" button
of the numeric keypad and press [ENT]
key.
Adjust Menu opens.
5 Press [4] key.
TXRX Setting menu opens.
6 Press [3] key.
The Tune Indicator numeric keypad screen opens.
7 Adjust the value until the tune indicator bar at the top left corner of the
screen reads 80% to 90% by inputting a value with the number keys or by
turning the multi-dial to change the value.
8 Place the cursor over the "ENT" button and press [ENT] key.
The tune level value is memorized and the level adjustment is complete.
Note: Do not let the tune indicator bar reach 100% while adjusting the tune level. The automatic tuning
function may not perform properly if the bar reaches 100%.
Set the level such that the tune indicator bar always reads 80% to 90%.
7.1 SETTINGS AT INSTALLATION
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