Chapter 7: MediaPort 7000 series hardware reference
Figure 7-7: RJ-45/DB-9 Splitter Cable
NOTE: The RJ-45 to DB-9 (Female) splitter cable can be used in a single (Channel 0) port.
To obtain the necessary interconnection between the MediaPort or ChannelPort Module and the
controller, the following methods can be used:
• Harmonic RJ45/DB-9 Splitter Cable to Standard RS-422 extension cable
• Harmonic RJ45/DB-9 Splitter Cable to Automation System adapter cable
NOTE: Harmonic does not provide RS-422 extension cables or RJ45 (Ethernet) extension
cables.
About RS-422 grounding
Make sure to follow grounding guidelines for RS-422.
RS-422 uses differential signaling, much like balanced audio. As long as the chassis grounds of the
controller and the MediaPort share a common ground through the AC power connections, no ground
connection is needed on the RS-422 cable.
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