Removal and replacement of ADU modules
99-145912-A Chapter 8: Service & maintenance 8-23
The S-bus is as a single master/multi slave half-duplex UART link,
mastered by the PCM module (5 Mbit/s).
The S-Bus master and slave modules are - by means of shielded DB9
cables - connected in a chain in the following order; PCM -
DDM(azimuth) - DDM(x-elevation) - DDM(elevation) - ISM - BCM. End
modules contains signal terminations.
8..6.1.2 Tools needed
Have the following tools ready at hand when starting to replace
modules:
• 4x150 mm Allen key (located inside the service door of the ADU)
• Torx 20 screw driver
•Flat head screw driver
• 8 mm open-end spanner
• 11 mm open-end spanner
• 18 mm open-end spanner
• Acoustic frequency meter
To Next Page
Loading...
Need help?
General
