Figure 5. Stripping 0.25-inch of insulation from the twisted pairs
3.Connect one pair of wires to XMT+ and XMT- (transmit positive and negative) on the terminal block, making careful note of which color is positive, and which color is negative.
4.Connect the other pair of wires to RCV+ and RCV- (receive positive and negative) on the terminal block, again making careful note of which color is positive, and which color is negative. Your completed crossover cable should be pinned electrically as shown below:
XMT + | RCV+ | } One Pair |
XMT - | RCV - | |
RCV - | XMT - | } One Pair |
RCV + | XMT+ |
5.When you finish connecting the wires to the terminal block, the assembly should resemble the diagram Figure 6 below.
Figure 6. Wiring terminal block of Model 1012B
The Model 1012B is now installed.
4.1.2 MODULAR TWISTED PAIR CONNECTION
The Model 1012B offers two interface options for twisted pair connection:
10 show signal/pin assignments for the jacks, as well as
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Signal/Pin Assignments
The
SIGNAL | SIGNAL | ||
1 | .GND† | 1 | . .N/C |
2 | .RCV- | 2 | .GND† |
3 | .XMT+ | 3 | .RCV- |
4 | .XMT- | 4 | .XMT+ |
5 | .RCV+ | 5 | .XMT- |
6 | .GND† | 6 | .RCV+ |
|
| 7 | .GND† |
|
| 8 | . .N/C |
†Connection to ground is optional
Crossover Cable Construction
Connection of a
|
|
| |
SIGNAL | PIN# | PIN# . | . . . . . . . . . .SIGNAL |
GND† | 1 | 6 . . | . . . . . . . . . . .GND† |
RCV- | 2 | 4 . . . | . . . . . . . . . . .XMT- |
XMT+ | 3 | 5 . . | . . . . . . . . . . .RCV+ |
XMT- | 4 | 2 . . . | . . . . . . . . . . .RCV- |
RCV+ | 5 | 3 . . | . . . . . . . . . . .XMT+ |
GND† | 6 | 1 . . | . . . . . . . . . . .GND† |
|
|
| |
SIGNAL | PIN# | PIN# . | . . . . . . . . . .SIGNAL |
GND† | 2 | 7 . . | . . . . . . . . . . .GND† |
RCV- | 3 | 5 . . . | . . . . . . . . . . .XMT- |
XMT+ | 4 | 6 . . | . . . . . . . . . . .RCV+ |
XMT- | 5 | 3 . . . | . . . . . . . . . . .RCV- |
RCV+ | 6 | 4 . . | . . . . . . . . . . .XMT+ |
GND† | 7 | 2 . . | . . . . . . . . . . .GND† |
†Connection to ground is optional
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