ADTRAN D4-U-RPM Installation & Maintenance

PRACTICES
Contents
Paragraph
1. General ............................................................ 1
Figure 1. ADTRAN D4 U-RPM ......................................... 1
2. Installation ....................................................... 2
Figure 2. U-RPM Application ........................................... 2
Table A. U-RPM Option Selections ................................. 2
3. Connections .................................................... 2
Figure 3. Connector Pin Assignments ........................... 3
Figure 4. U-RPM Option Locations ................................. 3
4. Maintenance .................................................... 3
5. Warranty And Customer Service .................. 3
1.0 GENERAL
1.01 This section provides installation and
maintenance
information for the ADTRAN U-Repeater
Powering Module (U-RPM), Part Number: 1100022L1.
Figure 1 shows the front of the unit. Figure 2 represents
a generic module application. Figure 3 shows the
connector pin assignments for the U-RPM. The unit's
part number and basic features are:
Part
Equipment Number
U-Repeater 1100022L1
Powering
Module
(U-RPM)
1.02 This practice has been reissued to reflect the
addition of a field selectable powering option in
Paragraph 2.04 and Figure 4 and the latest CLEI
designation. Issue 3 adds a new Sales telephone number.
®
WECO is a registered trademark of AT&T Technologies
61100.022L1-5C
MODEL U-RPM
D4-U-RPM
U-REPEATER POWERING MODULE
INSTALLATION/MAINTENANCE
Page
Features
Repeater Powering for
ADTRAN ISDN mid-point loop
repeater; Loop resistance fault
indicator; Class A2 or Class A3
operation.
C A U T I O N
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
FIGURE 1. ADTRAN D4 U-RPM
1.03 The U-RPM is a channel plug-in used in the
ADTRAN GPC-1 or AD4-24 Shelves or the
WECO ® D4 channel bank, to provide sealing current
power for the ADTRAN ISDN mid-point loop repeater.
1.04 The U-RPM provides three functions for the
ADTRAN ISDN mid-point loop repeater. These
functions are:
1. The D4-U-RPM receives -48 VDC power
from the facility power source and sends
constant 85 mA of sealing current down
the loop to power the U-Repeater.
2. A passive customer data flow is allowed
through the D4-U-RPM.
3. The D4-U-RPM monitors the line for
excessive resistance or open conditions.
SECTION 61100022L1-5
Section 61100022L1-5
Issue 3, April 1992
CLEI Code # DDRPG701_ _
PAGE 1