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ATTENTION
Before connecting the NI UES-3880 to the DC power inputs,
make sure the DC power source voltage is stable.
10/100BaseT(X) Ethernet Port Connection
The 10/100BaseT(X) ports located on the NI UES-3880's front panel are used
to connect to Ethernet-enabled devices.
Below we show pinouts for both MDI (NIC-type) ports and MDI-X
(HUB/Switch-type) ports, and also show cable wiring diagrams for
straight-through and cross-over Ethernet cables.
MDI Port Pinouts
Pin
Signal
1
2
3
6
RJ45 (8-pin) to RJ45 (8-pin) Straight-Through Cable Wiring
Switch Port
RJ45
Connector
Tx+
Tx-
Rx+
Rx-
STEP 1: Insert the negative/positive DC wires
into the V-/V+ terminals.
STEP 2: To keep the DC wires from pulling
loose, use a small flat-blade screwdriver to
tighten the wire-clamp screws on the front of the
terminal block connector.
STEP 3: Insert the plastic terminal block
connector prongs into the terminal block
receptor, which is located on the NI UES-3880's
top panel.
MDI-X Port Pinouts
Pin
Tx+
Tx-
Rx+
Rx-
Straight-Through Cable
RJ45 Plug Pin 1
3
6
1
2
Signal
1
Rx+
2
Rx-
3
Tx+
6
Tx-
Cable Wiring
— 7 —
8-pin RJ45
1
8
NIC Port
RJ45
Connector
3
Rx+
6
Rx-
1
Tx+
2
Tx-
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