Installation - ADTRAN T400 U-RPM III Installation & Maintenance

DISTRIBUTION
LT
U-INTERFACE
ISDN SWITCH or
U-BR1TE
Central Office

2. INSTALLATION

After unpacking the unit, immediately inspect it for
possible shipping damage. If damage is discovered, file
a claim immediately with the carrier, then contact
ADTRAN Customer Service (see section 3, Warranty
and Customer Service ).
Select the appropriate grounding option for the U-RPM
III's faceplate using Jumper J1. The faceplate can be
grounded to either the -48V return (A and B) or frame
ground (B and C). When frame ground is selected,
backplane connector pins 11 or 27 must be connected to
Frame /Chassis ground of the housing.
Grasp the T400 U-RPM III by the faceplate and insert it
into a shelf slot. Push the T400 U-RPM III into the
backplane connector until firmly seated.
Voltages to -120 VDC may be present on
output to repeater when the unit is powered.
After installing the U-RPM III and the U-Repeater or I-
NIU, refer to the appropriate ADTRAN U-Repeater
Installation/Maintenance practice for installation
verification.
Figure 3 shows the connector pin assignments. All
connections to the unit are made through the T400-
compatible backplane. No additional backplane wiring
is necessary for normal operation.
2
MAIN T400
POWER
FRAME MODULE
MDF
U-RPM III
(41)
- +
(47)
CURRENT
SOURCE
43 mA
-48V/-72V
FRAME GND
Figure 2. T400 U-RPM III Application
Section 61213017L1-5, Issue 2
U-REPEATER/I-NIU
(7)
(13)
BATTERY GND
Top
56 55
54 53
52 51
50 49
48 47
46 45
44 43
42 41
40 39
38 37
36 35
Component
34 33
Side
32 31
30 29
28 27
26 25
24 23
22 21
20 19
18 17
16 15
14 13
12 11
10 9
8 7
6 5
4 3
2
1
View from
Pin End
Figure 3. Connector Pin Assignments
ADTRAN ISDN
To
Customer
NT1
REPEATER
POWER
CONVERTER
To/From
Office
-48 V / -72V
FRM GND
-4 8R
FRM GND
To/From
ADTRAN U-Repeater/I-NIU
61213.017L1-5B