Chapter 4: Connecting External Equipment (Optional)53When connecting a DPX2 sensor package containing two DPX2sensors:A maximum of ten DX sensor packages can be cascaded because12-2=10.When connecting a DPX2 sensor package containing one DPX2sensor:A maximum of eleven DX sensor packages can be cascadedbecause 12-1=11.Using an Optional DPX3-ENVHUB4 Sensor HubA Raritan DPX3-ENVHUB4 sensor hub is physically and functionallysimilar to the DPX-ENVHUB4 sensor hub, which increases the numberof sensor ports for the EMX, except for the following differences: All ports on the DPX3-ENVHUB4 sensor hub are RJ-45 instead ofRJ-12 as the DPX-ENVHUB4 sensor hub. The DPX3-ENVHUB4 sensor hub supports all Raritan environmentalsensor packages, including DPX, DPX2, DPX3 and DX sensorpackages. To connect diverse types of sensor packages to this sensor hub, youmust follow the combinations shown in the section titled MixingDiverse Sensor Types (on page 55).To connect DPX3 sensor packages via the DPX3-ENVHUB4 hub:1. Connect the DPX3-ENVHUB4 sensor hub to the EMX using anRJ-12 to RJ-45 adapter cable.a. Plug the RJ-45 connector of this cable into the IN port (Port 1) ofthe hub.b. Plug the RJ-12 connector of this cable into the RJ-12 SENSORport of the EMX.2. Connect the Raritan sensor packages to any of the four OUT portson the hub.
