Diagnostics
ARCNet Waveforms
Nodes
The ARCNet is the primary control path in the Series 9800 Mobile Digital Imaging system. The path consists of four ARCNet
nodes, as follows:
1. Two nodes in the C-Arm, located on the following PCBs:
a. Fluoro Functions PCB.
b. X-Ray Controller PCB.
2. Two nodes in the Workstation, both located on the System Interface PCB, which in turn occupies an ISA slot on the Host
CPU motherboard. These nodes are called the following:
a. 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.
b. Remote Diagnostics Gateway, or
Service
node.
This node provides a data pathway between the system ARCNet and an external modem.
ARCNet Waveforms
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.
Follow this procedure or one similar to it to check the differential ARCNet signal:
1. Place the X-Ray Controller PCB on the extender card.
2. Connect the Workstation Interconnect Cable to the C-Arm.
22
Service
Periodic Maintenance
Contents
Schematics
Illustrated Parts
Installation
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