Paradyne Network Card 3511 DSU User Manual

®
Rear Connector Plate and Modular DSU V.35 Adapter  
Installation Instructions  
Document Number 3000-A2-GZ41-50  
July 1999  
Overview  
This document describes the installation procedure for the rear connector plate  
(Feature Number 3000-F1-021) and the modular Data Service Unit (DSU) V.35  
adapter.  
A rear connector plate is used with a modular DSU or a COMSPHERE 3800  
Series modem which has gold contacts on the rear edge of its circuit card  
(Figure 1). When the rear connector plate is installed in a COMSPHERE 3000  
Series Carrier, you can remove the modular DSU or 3800 Series modem without  
disturbing the DTE cables attached to the rear connector plate at the back of the  
carrier.  
The rear connector plate has two 25-pin DTE connectors. One is a an  
EIA-232-D/V.24 connector and the other is an ITU-T V.35 connector. If your cable  
requires a 34-pin V.35 interface, you must use the V.35 adapter (Figure 3).  
Gold Contacts  
25-Pin  
Modular DSU  
EIA-232-D  
Connector  
25-Pin  
V.35  
Connector  
Backplane  
Connector  
Figure 1. A Modular DSU and Rear Connector Plate  
3000-A2-GZ41-50  
July 1999  
1
 
4. Aligning the circuit card with the rear connector plate, slide the DSU into the  
slot until the connectors seat firmly into the back of the carrier.  
5. Press the faceplate latch to secure the DSU in the carrier, rotate the circuit  
pack lock into the closed position, and tighten the screw.  
6. Return to the rear of the carrier and tighten the rear connector plate screw.  
7. At the rear of the carrier, connect the DTE to the rear connector plate (see  
Figure 2):  
— If you are using an EIA-232-D interface cable, connect the EIA-232-D  
cable to the top DTE connector on the rear connector plate.  
— If you are using a V.35 cable with a 34-pin connector, use the V.35  
adapter as described in the next procedure.  
Connecting to a 34-Pin V.35 Interface  
To connect the V.35 adapter:  
" Procedure  
1. Connect the 25-pin end of the V.35 adapter to the bottom DTE connector on  
the rear connector plate. Tighten the screws on both sides of the adapter.  
2. Connect the DTE’s V.35 cable to the V.35 adapter. Tighten the screws on  
both sides of the cable connector.  
3. If a ferrite choke was supplied with your DSU, install it on the V.35 cable as  
closely as possible to the adapter. Secure it in position, if necessary, with a  
cable tie.  
Table 1 lists the pin assignments for the rear connector plate and the V.35  
adapter.  
25-Pin Connector  
Thumbscrews  
V.35 Adapter  
V.35 Cable  
99-16298  
Figure 3. V.35 Adapter  
3000-A2-GZ41-50  
July 1999  
3
 
Table 1. Rear Connector and V.35 Adapter Pin Assignments  
25-Pin Connector 34-Pin  
on Rear  
Connector on  
Circuit Name  
Connector Plate V.35 Adapter  
7
4
B
C
Signal Ground  
Request-to-Send (RTS)  
5
D
Clear-to-Send (CTS)  
6
E
Data Set Ready (DSR)  
8
20  
21  
F
H
J
Received Line Signal Detect (RLSD)  
Data Terminal Ready (DTR)  
Ring Indicator (RI)*  
18  
L
Local Loopback (LL)  
19  
N
Remote Digital Loopback (RL)  
Transmitted Data (TXD)  
Received Data (RXD)  
Transmitter Signal Element Timing – DTE Source  
Receiver Signal Element Timing – DCE Source  
Transmitter Signal Element Timing – DCE Source  
Positive dc Test Voltage  
24, 11  
23, 22  
15, 2  
16, 3  
14, 1  
9
P, S  
R, T  
U, W  
V, X  
Y, AA  
HH  
KK  
NN  
10  
25  
Negative dc Test Voltage  
Test Mode (TM)  
* Ring Indicator is available only on a DMB-S or a DBM-V.  
Warranty, Sales, Service, and Training Information  
Contact your local sales representative, service representative, or distributor  
directly for any help needed. For additional information concerning warranty,  
sales, service, repair, installation, documentation, training, distributor locations, or  
Paradyne worldwide office locations, use one of the following methods:  
H
Internet: Visit the Paradyne World Wide Web site at www.paradyne.com.  
(Be sure to register your warranty there. Select Technical Support  
Warranty Registration.)  
H
Telephone: Call our automated system to receive current information by fax  
or to speak with a company representative.  
— Within the U.S.A., call 1-800-870-2221  
— Outside the U.S.A., call 1-727-530-2340  
Document Feedback  
We welcome your comments and suggestions about this document. Please mail  
them to Technical Publications, Paradyne Corporation, 8545 126th Ave. N.,  
Largo, FL 33773, or send e-mail to [email protected]. Include the  
number and title of this document in your correspondence. Please include your  
name and phone number if you are willing to provide additional clarification.  
*3000-A2-GZ41-50*  
*3000–A2–GZ41–50*  
Copyright E 1999 Paradyne Corporation  
July 1999  
3000-A2-GZ41-50  
4
 

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