User's Manual

M7X and M7R Page 5-9 Maintenance
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Built-in-Test (BIT)
The BIT facility continuously monitors key radio parameters and indicates BIT status at the Control Head.
The Control Head’s BIT button lights to provide the indications shown in Fig 5-4.
Fig 5-4 Control Head BIT Button Indications
When the BIT system detects a fault, the BIT button lights as detailed in Fig 5-4. The button should then
be pressed to display the BIT Monitor screen as shown in
Fig 5-5. This screen indicates the faulty module
or cable that needs replacing. The BIT also detects external environmental conditions that could lead to
degraded performance of the radio; for example, high ambient temperature, high VSWR.
When the BIT Monitor screen is displayed, use Key 9 and Key 10 to scroll through the list. The complete
list, with reference to remedial action, is detailed in
Table 5-2.
BIT
Button
BIT Button Visual Indications:
Green means that no fault has been detected
Red means an internal fault has been detected
Flashing red means an external warning has been detected
Flashing green means an external warning has been detected and
acknowledged by the operator