Installation Manual Part 7
FCC ill: CDG-ARTU EXHIBIT C
MAGNASTAR C-2000 DIGITAL AIRBORNE TELEPHONE SYSTEM
9.2 Additional MMTI Troubleshoot Information
This section provides additional tests that may be used for troubleshooting or system check-out. Tests in
this section require the use of the MMTI commanded mode screens. See section 9.3 for information
detailing navigation and description of the various MMTI commanded mode screens.
9.2.1 Data Cable Pull Check
The data cable pull check can be a useful test for finding intermittent cable connections between CDBRs or
between a CDBR and an ARTU. This test is performed using the MMTI commanded ~e. This test
involves monitoring debug messages on one of the MMTI status screens while moving the data cables.
The performance of this test requires the ARTU to be placed in a "locked offline state" in order to easily
rcvicw thc MMTI debug messages. While in the "locked offline state" the "71 P AB_BIT TASK" dcbug
screen will display a message if the ARTU detects an intermittent connection. The MMTI will display
"AMX_IN_SYNC message received from AMX DSP LAN Adr=xx" on the debug screen if an intermittent
connection is detected as shown in Figure 9.2.1. The message "DQ2 DSP _ERROR_CODE rcvd from DSP
#14, HDRI=I00 hex" message will appear every 15 seconds on the debug screen when the ARTU is placed
in the proper mode and the correct debug screen selected. If an intermittent connection is detected, check
the cable for proper seating, damage, and bad or broken solder joints. Swapping of a CDBR or AIU may
be necessary to isolate intermittent or damaged connectors on the units themselves. The steps for
perfonning the data cable pull check are as follows:
Power up the ARTU and let it complete Built-ln- Test.
Connect the MMT cable to the ARTU and the computer.
Start the MMTI software and select commanded mode of operation.
Select the Goto Radio Installation/f est Menu.
Select the Set Radio Locked/Offline command.
Press the escape key.
Goto Radio Maintenance Operations Menus.
Goto Debug Menu.
EnablelDisable All Debug Msgs.
Enable All Debug Msgs.
Select No to Log Debug messages.
Press the "F I" key three times to scroll to the 71 P AB_BIT TASK Debug screen.
The message "DQ2 DSP_ERROR_CODE rcvd from DSP#14, HDRI=IOOhex" message will
appear every 15 seconds on the debug screen.
Move cables and look for intermittent connections on the MMTI Debug screen.
+ 71 PM_an TUK +
:1501.028 11102 ~_~COI8 ~ f~- ~ 11., ~1 . 100 ~ :
:1501.0.3 1 DQ2 08 COI8 ~ f~_~. 11., ~1 . 100 ~ :
:1501.058 1 1102 ~_--COI8 ~ f~- DSP 11., ~1 . 100 ~ :
:15015013 1 1102 DSP_--COI8 ~ f~- D8P 11., BD8.1 . 100 ~ :
:1501501' 1 nE_~ --- ~i~ f~ AD D8., La8 aAz: . 0 :
:15015020 1 ~%--8YE r8C.i~ f~- AD DSP, La8 aAz: . 2 :
:15015021 1 ~m_8YE -_.ag. r8C.i~ f~- AD ~P, La8 aAz: . 2 :
:15015028 1 1102 DSP_--CO~ ~~ f~ D8. 11., BDa1 . 100 hex :
:150150.3 11102 DSP oR_COD8 ~ fraa 08.,1., BDa1 . 100 hex :
:15015058 1 1102 ~---COD8 ~ f~ D8. 11., BDa1 . 100 hex I
:15011010 1 nE-- --- ~_i.-4 f~ AD D8., LA8 aAz: . 0 :
:15011011 1 ~X8-8YE r8C.i~ f~- AD DeP, La8 aAz: . 2 1
:15011013 1 1102 DSP_8aaOa_CO~ ~ f~ DBP 11., BDal . 100 ~ :
:15:11:28 1 1102 DSP_--COD8 ~ f~ DB. 11., BDal . 100 ~ ~
~
Figure 9.2.
71 PAB_BIT TASK Debug screen for Data Cable Pull Test.
9-16 RevB