Signal Lines - Fluke Norma 4000 User Manual

Remote Control
Users Guide
Figure 3-4. Pin Assignment of IEEE 802.3 (Ethernet) Interface (RJ-45 Connector)

Signal Lines

TD +
TD −
RD +
RD −
Wiring between Instrument and Controller
Wiring between the instrument and the controller is by means of a twisted pair cable
(with RJ-45 plugs). The wiring plan shown in Figure 3-5 applies to connection in local
area network via hub/switch and direct connection (controller connected to the instrument
directly using crossover cable).
Instrument
1
2
3
4
5
6
7
8
3-10
1 2 34 5 6 7 8
Transmit Data Plus: the positive signal for the TD differential pair contains the
serial output data stream transmitted from the instrument onto the network.
Transmit Data Minus: the negative signal for the TD differential pair contains the
same output as pin 1 (TD +).
Receive Data Plus: the positive signal for the RD differential pair contains the
serial input data stream received by instrument from the network.
Receive Data Minus: Receive data minus-the negative signal for the RD
differential pair contains the same input as pin 3 (RD +).
Patch (straight -through) Cable
Hub/Switch
----------- TD + / RD + ---------
--- -------- ---------
----------- RD + / TD + ---------
---------- --------
Figure 3-5. IEEE 802.3 (Ethernet) Wiring of Signalling Lines
1 - TD + (Transmit Data Plus)
2 - TD (Transmit Data Minus)
3 - RD + (Receive Data Plus)
6 - (Receive Data Minus)
Instrument
----------- TD + / RD +
1 1
-----------
2 2
----------- RD + / TD + ---------
3 3
4
4
5 5
----------
6 6
7 7
8 8
Crossover Cable
Controller
(NIC)
---------
3
---------
6
1
4
5
--------
2
7
8
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