Installation Manual Part 6

FCC 10: CDG-ARTU EXHIBIT C

MAGNASTAR C-2000 DIGITAL AIRBORNE TELEPHONE SYSTEM

9.1.8 HANDSET I LAN TEST

The Handset I LAN test wilt inform the installer of the number ofCDBRs/AIUs and Handsets with which

the ARTU can cornrnunicate. This test does not distinguish the difference between a CDBR or an Am.

Also, this test will not identify the presence of a CAS.

Symptom: The MMTI does not respond with the correct number of CDBRs or Handsets.

Isolation of the faulted componellt will require a process of elimination and possible component

swapping. Start by disconnecting the Inter-CDBR cable from the 12 port of the second to last

CDBR. Repeat the Handset/LAN test and determine if the correct number of components

connected to the system is displayed If an incorrect number of components is displayed, repeat

the process until only the ARTU Data cable and one CDBR are connected to the system. If the

Handset LAN test still fails, disconnect the ARTU Data cable from the ARTU. Perform a

continuity check on the ARTU Data cable. Be sure to check for opens, pin to pin shorts and pin to

shield shorts. Also check continuity of the shield from end to end. If the cable continuity checks

correctly, swap CDBRs and reconnect the cable and CDBR. If the system still does not display

the presence of a CDBR, then replace the ARTU.

+ V4.0A MNT Radio Re~ +

I I

: DIG Test ESTABLISH HANDSET LAN Result.. Pas. :

: TDI IN Sync :

: X Handsets Assigned :

: X CDBRa Present :

: C-2000 reports engineering test ESTABLISH HANDSBT LAN perfOC8.d. :

:mS1A202 ." C i

: ~t_: Ro di8Play in the IDtr Radio RaSP0D888 window.

: Did you wait greater than 15 seconds for the test to c~lete?

: SyqItoa: The wrong nU8ber of CDBRs and Handsets are displayed.

: Starting with the last CDBR, disconnect the cabling from the J2 connector

: of next CDBR in line. Then press .R. to repeat the test. If correct nU8ber

: appears, check the cabling. If cabling is correct, replace CDBR. If the

: incorrect nU8ber appears, repeat the above steps until the correct number

: of COBRa appears. If left with only one CDBR, check cabling and swap out

: CDBR. If problem still exists replace ARTU.

: (R)eturn: -

Figure 9.1.8. Handset / LAN MMTI Troubleshoot Screen.

RevB

9-11