D
Y
4 S
YSTEMS
I
NC
.
H
ARDWARE
I
NSTALLATION
812628 V
ERSION
1 O
CTOBER
2003
4-7
BPK-122-000
Transition Module
Channel 3 and 4
Header Pins
Figure 4.3 shows the location and orientation of the header pins on the transition module
associated with the Channel 3 and Channel 4 EIA-422 interfaces available from the
SCP/DCP-122.
F
IGURE
4.3: EIA-422 Channel 3 and Channel 4 Header Pins
T
ABLE
4.6: EIA-422 Channel 3 Pinout
Pin Number
SCP/DCP-122 Signal Name
Differential I/O Pair
E25
422
Diff I/O Out 0
E26
422_CH3_TX-
E27
422_CH3_RX-
Diff I/O In 0
E28
422
E29
GND
T
ABLE
4.7: EIA-422 Channel 4 Pinout
Pin Number
SCP/DCP-122 Signal Name
Differential I/O Pair
E30
422 / CH3_
Diff I/O Out 1
E31
422_CH4_TX- / CH3_TXClock-
E32
422_CH4_RX- / CH3_RXClock-
Diff I/O In 1
E33
422 / CH3_
E34
GND
J2
CPCI
J4
(USB)
J5 Eth
RS-422 Ch 3
and Ch 4
DIO
P0
Cable
I/F
Reset (E36, E37)
GND
CHAN
NE
L
3
CHAN
NE
L
4
TX+
TX-
RX-
RX+
GND
TX+
TX-
RX-
RX+
J3
RS-232
J6
RS-232
Ch 1
Ch 2
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