Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
RFL DS-562I RFL Electronics Inc.
June 14, 2007 30 (973)
334-3100
USING THE DS-562I AND DS-562B END-TO-END
The DS-562B must be setup for Mode 2 operation. This is accomplished by setting SW3-8 in the
ON (UP) position.
RS-449 LOOPBACK “PLUGS”
ONLY the data lines are “looped”. The Timing lines must not be looped back because the DS-
562I (or DS-562B) provide both transmit and receive clocks.
“Looped Signals”: Send Data + (Pin 4) > Receive Data + (Pin 6)
Send Data - (Pin 22) > Receive Data - (Pin 24)
In addition, there is no guarantee that the TxData will be valid on the positive edge of the
TxClock. Data errors may occur if data is sampled near the edge instead of the center of the data
bit. It is therefore recommended that a “split” cable be used for testing purposes such that one end
“sends data” and the other end “receives data’. Confirm both directions by switching the cable
ends.
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