User's Guide
Table Of Contents
- Introduction
- System Description
- System Operation
- Testing and Fault Isolation
- Maintenance and Repair
- Appendix A: Return Material Authorization
DRAFT
Page 4-15
17 Mar 2016
23-15-87
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Figure 4-7. SATCOM RF Path Menu
Table 4-15 describes the information available on the SATCOM RF PATH menu.
G. USIM and Data Bus Status
As shown in Figure 4-8, the SATCOM USIM/DATA menu reports the status of the USIMs and data
buses of the system.
Table 4-15 SATCOM RF PATH Menu
Label Description
RX:DLNA-SDU Reports the status of the RF path from the DLNA to the SDU as OK or FAULT.
If the status is FAULT, check Rx RF cabling between the SDU and the antenna.
TX:SDU-ANT Reports the status of VSWR activity on the SDU-Antenna RF path as OK or
FAULT. If the status is FAULT, check Tx RF cabling between the SDU and the
antenna.
1 5 10 15 20 24
1
SA TCOM RF PAT
H
PATH VSWR
1L
3
3
1R
RX : SDU -DLNA
2L
5
OK N / A
5
2R
TX:SDU- DLNA
3L
7
N/A OK
7
3R
4L
9
<RE TURN
9
4R
DRAFT as of
4 Mar 2016