Section DTW-A52-804-202
030-101667 Rev. A
R
5
0802I2RA
4.
Lift the assembly and place the 528-04I2 base plate on the wall,
aligning the holes in the base plate with the drilled holes in the
mounting surface.
5.
Insert the first mounting screw into the top left hole in the base
plate, and tighten or drive the screw until approximately ¼-inch
remains.
6.
Insert the remaining three screws and fasten until approximate-
ly ¼-inch remains.
7.
Carefully align, position, and hold the assembly in its final posi-
tion and finish driving the screws. Tighten all screws.
- NOTE -
The 528-04I2 optionally may be set on a table, shelf, or desk.
For desktop installations, four self-adhesive rubber feet are provided and
are to be installed on the bottom of the assembly to help prevent marring
the desktop surface.
3.4
Connecting Telco/Network Interface Cables
Telco or network interface connections to the assembly are made
to screw terminal blocks using shielded twisted pair cable (22-24
AWG minimum) of a length consistent with local installation prac-
tices. Telco/network connections are listed in Table 2 and Table 5.
- LIST 9 WIREWRAP PIN NOTE -
The List 9 Option provides wirewrap pin connectors inside the unit for
Network and Customer connections, instead of screw terminals. Substi-
tute the term wirewrap pin header" for screw terminal block" when ref-
erencing the 528-04I2, List 9.
Card Edge Connector
Telco Position on
TB5 TB6 TB7 TB8
Function
Pin #
TB5, TB6, TB7, TB8
Receive from Network
7
T
Receive from Network
13
R
Transmit to Network
41
T1
Transmit to Network
47
R1
Table 5. Telco Interface Connections
Card Edge Connector
CPE Connector Position/Pin
Function
Pin #
TB1, TB2,
RJ48C
RJ48S
Function
Pin #
TB1, TB2,
TB3, TB4
RJ48C
J1-J4
RJ48S
J1-J4
Receive from CPE
55
T
5
2
Receive from CPE
49
R
4
1
Transmit to CPE
5
T1
2
7
Transmit to CPE
15
R1
1
8
Table 6. Customer Interface Connections
3.5
Connecting Customer Interface Cables
Make customer connections to J1-J4 (the RJ48C/S jacks) or to the
screw terminal blocks using shielded twisted pair cable (22-24 AWG
minimum) of a length consistent with local installation practices. If
400-type modules (twice the width of 200-type modules) are used
in the assembly, one can be inserted into circuit/slot #1 (top slot
when in the closed position) which interfaces with J1 and S1. The
other 400-type module can be inserted into circuit/slot #3 and in-
terfaces with J3 and S3. Figure 8 illustrates the physical and
electrical layout of the unit. Also see Table 3 and Table 6 for custom-
er connections.
- GROUNDING NOTE -
Always follow the National Electrical Code (NEC) rules, local safety pre-
cautions, and standard operating procedures for grounding the equipment
when installing, upgrading, repairing or maintaining equipment. Any in-
structions or information contained herein is subordinate to local codes,
operating procedures or practices.
- CAUTION -
Never apply power until all installer connections are made.
3.6
Connecting Power and Ground
The module(s) in the 528-04I2 can be span/line powered or locally
powered with an external -48 VDC power source. Local power and
ground connections to the assembly are made to TB9. See Table 7
for power and ground connections. For applications where -48 V
bulk power is not readily available, the Westell A90-204100 wall-
mounted (plug-in) power supply (117 VAC to -48 VDC), can be
ordered separately for use with the 528-04I2.
Function
TB9 Terminal Block Label
-48V Ext. Power In
-PWR
Earth Ground
FRAME GND*
Lightning Return Ground
CIRCUIT GND*
+48V Ext. Power In
+PWR
*Note: For applications requiring chassis ground to be connected to circuit ground, an optional ground strap is
provided for installation between the CHASSIS GND and CIRCUIT GND terminals on TB9.
Table 7. Power and Ground Connections
3.7
Securing Cables
After the assembly has been mounted and all wire connections are
made, use the cable ties provided to secure all wires/cables.
3.8
Installing Modules
When all wiring is completed and secured, the module(s) may be
installed inside the assembly cover. Refer to the appropriate prac-
tice for optioning and testing information for each module. When
Mounting
+PWR
CHASSIS GND
-PWR
TB9
Chassis
Ground
Lug
To
Lightning
Return
To Ground Window (e.g., cold water pipe)
Figure 6. Grounding with Span Power
CIRCUIT GND
Optional*
Ground
Strap
* See note at the
end of Table 7.
Mounting
+PWR
CKT GND
-PWR
TB9
Chassis
Ground
Lug
To Lightning
Return Ground
To Ground Window (e.g., cold water pipe)
-
GND
Local
Power Supply
Figure 7. Grounding with Local Power
CHASSIS GND
+
Optional*
Ground
Strap
* See note at the
end of Table 7.
