Section DTW‐A52‐802‐202
030‐101665 Rev. C
R
3
1205I2RC
Wall-Mount Keyhole
Customer Side
Figure 3. Top View of 528‐02I2 Interior (Cover Open for Visual Clarity), Typical Wall‐Mounted Position
Terminal Block*
Network Side
Terminal Block*
(Total of 4)
* List option 4-9 contains
wirewrap pin headers
instead of screw
terminals.
Shorting Bar/
Ground Jumper
RJ48C/S Switch
Power/Ground
Terminal Block
RJ48C/S Switch
Ckt 1
Ckt 2
Figure 4. 528‐02I2 Interior, Cover Open, Typical Table
top Mount Position
Hinged Cover,
Access
Card Guides
2 56‐pin Card
See‐through
Switch, CKT2
For Modules
RJ Jack,
Accessible
Rear‐
Customer
Network
Power/Ground
Terminal Strip
S2, JR48C/S
Terminal Block*
Edge Connectors
J2,
Ribbon Cable
RJ48S
RJ48C
CKT
2
Customer
Terminal Block*
Switch, CKT1
S1, RJ48C/S
RJ48S
RJ48C
CKT
1
Module
Opens For
To Wiring
Wiring Label
Window
* The List 4‐9 option contains wirewrap pins instead of screw terminals.
Earth ground as stated in Paragraph 2.5. CIRCUIT GND must
be connected to an earth ground regardless of the power
source. Use 24 AWG or greater insulated wire (see Figure 7).
The ‐PWR position is used to connect the negative terminal
from the power supply.
2.5
Frame Ground Connections
The metal housing can be connected to earth ground by using
one of the methods below. On some units, this optional strap is
provided in the parts bag, and on the DTMA528‐02I2L4 it is
factory installed.
S
Exterior Frame Ground Lug on Rear of Assembly
(Preferred Method).
A frame ground lug, labeled FRAME
GND, is provided on the rear of the metal housing. This
lug should be used to connect the metal housing to earth
ground.
S
Interior TB5 Frame Ground Screw Terminal (Inside
Assembly).
A frame ground screw terminal, labeled TB5,
located inside the assembly can be used as an optional
method for earth grounding the metal housing (Figure 3
and Figure 8) when local power is supplied.
S
Optional Interior TB5 Removable Ground Strap.
The
528‐02I2 features a factory‐assembled, pre‐installed,
ground strap for applications requiring frame ground to
be connected to circuit ground. The strap is connected
across TB5's FRAME GND and CIRCUIT GND termi
nals. On some units, this optional strap is provided, but
not factory‐installed.
3.
INSTALLATION
The assembly should be installed by authorized, trained person
nel only. This assembly is for use with NEBS‐certified 200
MECHANICS
r
or 400‐type cards. Installation consists of in
specting the assembly for damage, selecting the mounting site or
location, gathering all necessary tools and hardware, mounting
