4535 612 10261 HD11 Service Manual Page 74
CSIP Level 1 Theory of Operation: Functional Description
- A 9-pin sub-D connector for the foot switch
- A 15-pin sub-D connector for external VGA
- A 4-pin mini circular DIN S-Video connector for analog printers
- An RJ-45 LAN connector for network connection
- Three female BNC connectors: one for B&W composite video, one for color composite
video, and one for print trigger output
- A standard USB (A) for report printers
• Lower I/O panel (see Figure 11-13):
- An equipotential lug
- The system ground lug
- A telephone line jack
To k e n R i n g
Cable
The token ring cable carries the following signals between the E-box Interface Board and the Sig-
nal Processor Board:
• R-wave communication
• On and off signal that switches on the outputs from the power supply (the 120-Vac output
for the PC is always on)
• Program enable and program done (on separate circuits)
• Ring in and ring out buses (on separate circuits)
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