Overview
2-40
Service Periodic Maintenance
Contents
Schematics Illustrated PartsInstallation
Service Port
The ARCNET connector on the Workstation rear panel is a secure serial port reserved for customer technical
personnel or OEC Field Service Engineers. It is used to configure, test and calibrate both the Workstation and X-Ray
generator.
The service port uses a packet-based handshaking protocol to communicate with a remote computer. Usually the
remote computer will be a laptop located a few feet away from the Workstation.
The remote computer becomes the server, downloading command and data packets to the Workstation client. The
Workstation responds with an ACK when it successfully receives a packet, and with a NAK if it doesn’t receive a
complete packet within the timeout period. The remote computer resends the packet until it receives an ACK from the
Workstation, and then sends the next packet. An upload from the client (the Workstation) consists of much the same
protocol in reverse; the Workstation sends a packet, which the remote computer responds to with an ACK or NAK. In
the event of a NAK, the Workstation resends the packet until its service port times out. A timeout of the service port
terminates the remote session.
Refer to Section 9 - External Interfaces for complete hardware information on the Workstation’s service port.
Remote Utilities
The Remote Utilities Software (RUT) is a suite of programs that execute on a remote computer, which communicates
with the Workstation service port just described. RUT allows customer technical personnel and OEC Field Service
Engineers access to the system for the following purposes:
• Setup
• Configuration
• Calibration
• Troubleshooting
Please refer to Section 10 - Software for additional details on the Remote Utilities.
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