System Communications
Fault Isolation
ARCNet Waveforms
The ARCNet is the primary control path in the Series 9800 Mobile Digital Imaging system.
There are two nodes in the C-Arm:
1. The Fluoro Functions PCB.
2. The X-Ray Controller PCB.
The System Interface PCB, which occupies an ISA slot on the Host CPU motherboard in the Workstation, has two independent
ARCNet nodes:
3. The 9800 System ARCNet host, or Workstation node. This node has two junctions. The first junction communicates with any
external ARCNet devices that may be connected to the Workstation rear panel. The second junction provides ARCNet
communication to the C-Arm through the Interconnect cable.
4. The Remote Diagnostics Gateway, or Service node. This node provides a data pathway between the system ARCNet and the
serial interface to the Remote Utility Suite.
You can use a digital oscilloscope to observe ARCNet signals anywhere on the ARCNet bus. It is most convenient on the C-Arm,
where you can place either the Fluoro Functions PCB or X-Ray Controller PCB on an extender card. A procedure for checking
ARCNet communications is contained in the Diagnostics Section of this manual.
An illustration showing all four ARCNet nodes active is also contained in the Diagnostic section of this manual. Investigate all
inactive nodes. Subsequent illustrations show individual node details.
5
Service
Periodic Maintenance
Contents
Schematics
Illustrated Parts
Installation
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