Installation Manual Part 6

FCC 10: CDG-ARTU EXHIBIT C
MAGNAST AR C-2000 DIGITAL AIRBORNE TELEPHONE SYSTEM
9.1.4 LOCKED OFF-LINE STATE
For the MMT to command certain tests for the installation checkout, the ARTU software must be placed in
a mode which will allow the ARTU the flexibility to perform these tests. This mode of operation is called
the "Locked OFF-Line State". This test step is a mode change only. Failure of this mode change will only
occur iftbe MMT is not communicating with the ARTU.
It should be noted that while the ARTU is in this mode, the Handset screen may go blank and will not
respond to keypad inputs.
Symptom: ERROR=> MMT communications failure - timed out.
If this message is displaycd in thc Radio Responses window then check the cabling between thc
ARTU and the MMT. If the cabling is correct then press "R" to repeat the test.
V4.0A MMT Radio Re~
Radio 8oftw8re executing in locked offline state.
+ + VlA ~ Tutorial'
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,
,
: Syq>toa: ERROR-> I8rr c~icati0D8 failure - tiJ
: a) Check the I8rr cable connecti_.
: b) Press .R. for repeat.
Figure 9.].4. Locked Off-Line State MMT] Troubleshoot Screen.
9-5 RevB