Patton electronics 1012ARC, User Manual

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3.3 REAR CARD CONFIGURATION
After you have configured the Model 1012ARC, you will need to set
up your rear card. The Model 1012ARC has two interface card options:
the 1Q11 (which comes equipped with two RJ-11 ports and two RJ-45
ports) and the 1Q45 (which comes equipped with four RJ-45 ports).
Figure 3 illustrates these two different options.
Prior to installation, you should examine the rear card you have
selected and ensure that it is configured for your application. Each rear
card is configured by setting straps on the PC board. Section 3.4
describes the strap locations and settings for each card.
3.4 REAR CARD STRAP SETTINGS
Figure 4 shows the strap locations for the 1Q11 and the 1Q45 rear
cards. These straps determine various grounding characteristics for
the RS-232 and twisted pair lines.
5
The table below provides a summary of strap functions for both of
the rear cards. Following Figure 5 is a description of each strap and its
function.
JB2 & JB4: Line A Shield & Line B Shield
This strap pertains to the line interface. In the connected (closed)
position, the strap links RJ-11 pins 1 and 6 (RJ-45 pins 2 and 7) to
frame ground. These pins can be used as connections for the twisted
pair cable shield. In the open (disconnected) position, pins 1 and 6 (or
2 and 7) remain connected, but are “lifted” from frame ground.
JB2 Setting
Position 1&2 Line A Shield Connected
Position 2&3 No Shield
(default)
JB4 Setting
Position 1&2 Line B Shield Connected
Position 2&3 No Shield
(default)
JB5: SGND & FRGND
In the connected (closed) position, this strap links signal ground
and frame ground. In the open (disconnected) position, pin 1 is “lifted”
from frame ground.
JB5 Setting
Position 1&2 SGND and FRGND Connected
Position 2&3 SGND and FRGND Not Connected
(default)
6
Strap Position 1&2 Position 2&3
JB2 Line A Shield No Shield †
JB4 Line B Shield No Shield †
JB5 SGND & FRGND Open †
JB6 DTE A DSR † N/A
JB7 DTE B DSR † N/A
INTERFACE CARD STRAP SUMMARY TABLE #1
Summary of strap settings, † indicates factory default
Figure 3. Model 1012ARC rear interface card options
Figure 4. Strap locations for both rear cards
1
2
3
1
2
3
1
2
3
1
2
3
1 2 3
(Unit A)
JP2
JP4
JP5
JP6
JP7
(Unit B)
(Unit A)
(Unit B)
Converter
twisted pair
Terminal
}
}
1Q11
1Q45
RJ-45
RJ-45
RJ-45
RJ-45
RJ-11
RJ-11
RJ-45
RJ-45
Twisted Pair Line
Connection
Twisted Pair
Line Connection
RS-232
Connection
RS-232
Connection
}
}
}
}