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Moog Components Group
Mini4, Rev C
February 23, 2009
(201580-xxx And 201590-xxx)
1.4 Diagnostics Overview
The Mini4 Video Input and Output boards have been designed to include hardware and firmware for
monitoring various real-time parameters of interest on the boar. This capability is accessed via a black3-
pin Phoenix connector on the right side of the board that carries bi-directional RS-485 telemetry to/from
the monitoring PC to the Mini4 boards. The diagnostics modem will typically be used in conjunction
with a user-supplied PC on the surface, which has been loaded with PRIZM Modem Monitoring software
– PMON II.
The Diagnostics feature does not require the use of an RS-485 channel in the multiplexer system for
connectivity between the topside Diagnostic PC and the remote multiplexer. The Diagnostics for the
Mini4 TRANSPARENTLY carries the local and remote diagnostics over the fiber optic link.
NOTE: The diagnostics feature in no way interferes with normal operation of the Mini4 boards
– it is not necessary to be running the diagnostics software for the Mini4 boards to work.
1.4.2 Requirements
1.4.3 Communications Hardware
The diagnostics capability is accessed via the 3-pin RT+/RT- connector on the black 3-pin connector,
which provides the RS-485 connectivity to the on-board processor for diagnostics communications.
The user is required to communicate with the modems of the system via RS-485. A typical installations
is shown in the following drawing.
Figure 1- Typical Cabling/Wiring for Back plane Diagnostics Telemetry
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