Notice – Patton electronic 1070RC User Manual

Page 17

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SIGNAL

PIN#

COLOR

COLOR PIN#

SIGNAL

GND

2

Orange.............Brown

7

GND

RCV-*

3

Black ................Green

5

XMT-

XMT+

4

Red ..................Yellow

6

RCV+

XMT-

5

Green...............Black

3

RCV-

RCV+

6

Yellow ..............Red

4

XMT+

GND

7

Brown ..............Orange

2

GND

* The Model 1070RC is not sensitive to polarity

4.4.2 Multipoint Twisted Pair Connection

Figure 11 (below) shows how to wire two-pair cables properly for a

Model 1070RC star topology.

15

16

HOST

FIRST SLAVE

SECOND SLAVE

XMT

RCV

RCV

XMT

RCV

RCV

RCV

XMT

XMT

RCV

XMT

XMT

Figure 11. Star wiring for Model 1070RC host and slaves

Notice!

Any modular twisted pair cable connected to

the Model 1070RC must be shielded cable, and the outer
shield must be properly terminated to a shielded modular
plug on both ends of the cable.

5.0 OPERATION

Once you have configured each Model 1070RC and connected the

cables, you are ready to operate the units. Section 5.0 describes the
LED status monitors, the power-up procedure, and the use of the built-
in loopback test modes.

5.1 LED STATUS MONITORS

The Model 1070RC features ten front panel status LEDs that

indicate the condition of the modem and communication link. Figure 12
(below) shows the relative front panel positions of the LEDs. Following
figure 12 is a description of each LED's function.

Power

glows green when power is applied to the Model
1070RC front card.

TD & RD

The green "TD" and "RD" indicators blink to show
positive state data activity. The red "TD" and "RD"
indicators blink to show negative state data activity.
Solid red indicates a connection in an idle state.

Cntrl

in

and glow red to show that either control signal is off.

Cntrl

out

Glow green to show that either control signal is on.
When the 1070RC is connected to a DTE, Control In
will glow green for a positive polarity on Pin 4 (RTS).
Control Out will glow green for an incoming signal
from the line and an outgoing CD signal on RS-232
pin 8.

Test

glows green when the loopback test modes are
activated.

Figure 12. The Model 1070RC front panel, showing LED positions

Model 1070RC

Power

TD

RD

Cntrl

Out

Test

Cntrl

In

1 - Blue

2 - Orange

3 - Black

4 - Red

5 - Green

6 - Yellow

7 - Brown

8 - Slate

1 - Blue

2 - Yellow

3 - Green

4 - Red

5 - Black

6 - White

RJ-11

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