8.1 Self-test and Error Message
8-5
Note:
Continuous alarm sounds
When DSP detects CPU malfunction, alarm will go off. U20: DSP and U30: CPU are in
constant contact. If CPU does not respond to a command from DSP, DSP will recognize
this as an error and alarm of 2200 Hz will continuously go off. Then, key input and
LCD indication will freeze up. Since there is no display function in DSP, alarm will go
off instead of showing a pop-up window an as error.
When detecting abnormally functioning antenna
During a continued transmission R-VSWR voltage and F-VSWR voltage are checked
three times after 5, 6 and 7 has passed from the start of the transmission. If RVSW
voltage is over its designated voltage, APC functions to reduce PA output.
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