M3SR Series 4100
6.2.5 Control Unit Built-In Test
There are three different kinds of built-in tests implemented in the radio:
•
Power-on built-in test (PBIT)
•
Continuous built-in test (CBIT)
•
Initiated built-in test (IBIT)
The power-on built-in test (PBIT) starts immediately and automatically when the control unit
is powered up, a continuous built-in test continuously monitors essential parameters during
operation, and the initiated built-in test is started by the operator. Each of these built-in tests
generates error messages for failure diagnosis and entries in the error log.
Another test implemented in the control unit is the keyboard test which can be made by the
user to test proper operation of all the keys of the control unit and the knob.
6.10
Control Unit Built-In Test
Operating Manual 6175.4760.02 – 01