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DMD15/DMD15L IBS/IDR Satellite Modem Table of Contents
TM051 - Rev. 5.8 xi
Section 5 – Electrical Interfaces
5.0 DMD15/DMD15L Connections ______________________________________ 5-1
5.1 Power Inputs ____________________________________________________ 5-2
5.1.1 AC Power Input Module __________________________________________ 5-2
5.1.2 DC Power Input Module __________________________________________ 5-2
5.2 TX (J1) ________________________________________________________ 5-3
5.3 RX (J2) ________________________________________________________ 5-3
5.4 SD (J3) ________________________________________________________ 5-3
5.5 DDO (J4) _______________________________________________________ 5-3
5.6 IDI EXC (J5) ____________________________________________________ 5-3
5.7 EXT CLK (J5) – Synchronous Interface Only ___________________________ 5-3
5.8 RD (J6) ________________________________________________________ 5-3
5.9 G.703 (J7) ______________________________________________________ 5-3
5.10 SYNC DATA (J8) _______________________________________________ 5-4
5.11 ASYNC (J9)____________________________________________________ 5-5
5.11 STATUS (J11)__________________________________________________ 5-6
5.13 TERMINAL (J12)________________________________________________ 5-7
5.14 REMOTE (J13) _________________________________________________ 5-7
5.15 ESC 8K DATA (J15) _____________________________________________ 5-8
5.16 ESC VOICE (J16) _______________________________________________ 5-9
5.17 ESC ALARMS (J17) _____________________________________________ 5-9
5.18 SWITCH (J18)_________________________________________________ 5-10
Section 6 – Maintenance
6.0 Periodic Maintenance _____________________________________________ 6-1
6.1 Troubleshooting _________________________________________________ 6-1
6.2 DMD15/DMD15L Fault Philosophy ___________________________________ 6-1
6.2.1 Alarm Masks __________________________________________________ 6-2
6.2.2 Active Alarms __________________________________________________ 6-2
6.2.2.1 Major Alarms_________________________________________________ 6-2
6.2.2.2 Minor Alarms _________________________________________________ 6-2
6.2.2.3 Latched Alarms _______________________________________________ 6-2
6.3 DMD15/DMD15L Fault Tree Matrices_________________________________ 6-2
6.3.1 Interpreting the Matrices _________________________________________ 6-4
6.3.2 IBS Fault Conditions and Actions___________________________________ 6-4