Furuno 1835 Operator's Manual page 71

1. DESCRIPTION OF OPERATION
Items unavailable with Function key F1, F2 and F3
• [Pulse Length] ([Echo] menu)
• [2nd Echo Rejector] ([Echo] menu)
• [Watchman] ([Alarm] menu)
• [Tuning Mode] ([Tuning] menu)
Total TX time indication
The total TX time (TX TIME XXXXXX.XH) does not appear on the diagnostic test or
on the Normal standby display.
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