J21 cable connection, Open the ferrite block housing, Close the housing clip – Xantrex Technology RS232-XPD User Manual
Page 33
Installation and Configuration
User Signals
Release 1.2
31
Figure 2.6 J21 User Signal Connector Circuit Block Diagram
J21 Cable
Connection
Use a standard 8-position telephone jack and data cable to connect to J21. Add a
ferrite block to reduce radiated emission. The one inch square ferrite block with
built-in housing clip is packaged and shipped with the power supply interface card.
To install the ferrite block:
1. Position the block no more than 5 cm (2") from the power supply end of the
J21 user cable.
2. Open the ferrite block housing.
3. Loop the cable through the ferrite block. See Figure 2.7, “J21 User Cable with
4. Close the housing clip.
The ferrite block ensures that the power supply system meets radiated emission
requirement 89/336/EEC for CE mark approval. See the power supply's operating
manual for noise specifications.