User's Manual

Chapter 2: Installing the Hardware Infrastructure 2-17
CBS Connectors and Status Lights
21391
Power
Ground
+48V DC
3
1
4
2
Uplink
87654321
Data Connectors
The CBS has four data connectors:
Uplink – used to connect to the in-store hub or a higher level CBS hub as
shown in the illustration in the "CBS Ethernet Cable Connections"
section of this chapter.
1, 2, 3, and 4 – used for downlink connections to lower level CBS hubs
Data connector pin and signal use is as follows:
• Pins 1, 2, 3, and 6 carry standard Ethernet transmit and receive data
between the Ethernet Hub and the primary CBS and between all
CBS's as defined in ISO/IEC Standard 8802.3 paragraph 14.5.1.
• Pins 4, 5, 7, and 8 are used for RealPrice transmit and receive timing
signals between all CBSs.