ADTRAN Quad BNC User Manual
Total Access® Quad BNC Adapter Module
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1181007L2
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Installation and Maintenance
CONTENTS
1. GENERAL ............................................................1
2. FEATURES .......................................................... 1
3. INSTALLATION ................................................. 3
4. CONNECTIONS ..................................................3
5. MAINTENANCE .................................................3
6. PRODUCT SPECIFICATIONS ...........................4
7. WARRANTY AND CUSTOMER SERVICE .....4
FIGURES
Figure 1. ADTRAN Total Access Quad BNC
Adapter Module .........................................1
Figure 2. Block Diagram of the Quad BNC Adapter
Module .......................................................2
Section 61181007L2-5A
Issue 1, February 2003
1. Proper receive termination for an EC-1 signal.
TABLES
Table 1. Quad BNC Adapter Module
Specifications .............................................4
1. GENERAL
This practice is an installation and maintenance guide
for the ADTRAN Total Access Quad BNC Adapter
Module illustrated in Figure 1. The 1181007L2 Quad
BNC Adapter Module is designed to mount on the
rear of the ADTRAN Total Access chassis,
P/N 1181001L1 (23-inch) or 1182003L1 (19-inch).
The Quad BNC Adapter Module provides Dual STS-1
interfaces for the Total Access 3000 and Total Access
3010 Chassis. The Quad BNC Adapter Module must
be used in conjunction with an OC-3 L2 MUX (P/N
1181031L2). It will also work in conjunction with
either the L1 or L2 versions of the STS-1 MUX (P/N
1181030L1/L2). For information on the OC-3 L2
MUX, refer to ADTRAN Document 61181031L2-5A.
Revision History
This is the initial issue of this practice. Future
revisions to this document will be explained in this
subsection.
Figure 1. ADTRAN Total Access Quad
BNC Adapter Module
2. FEATURES
The Quad BNC Adapter Module is designed to mount
on the lower right-hand corner of the backplane of a
Total Access 3000 or Total Access 3010 chassis. The
unit provides the coax cable connections for two Total
Access chassis which subtend from a Total Access
equipped with an OC-3 L2 MUX.
The Quad BNC Adapter Module for the Total Access
chassis provides a data path for two STS-1s from the
OC-3 equipment Total Access to the subtending Total
Access chassis.
The Quad BNC Adapter Module provides:
2. A means of interfacing the transmit EC-1 line
from either multiplexer module.
3. Four 75-ohm BNC connectors – two for
transmit data and two for receive data.
4. Connection to the Total Access backplane at
the 24-pin connector provided for that purpose
and attaches with screws to ensure rigidity.
61181007L2-5A 1
Trademarks: Any brand names and product names included in this document are
trademarks, registered trademarks, or trade names of their respective holders.
Figure 2 is a block diagram of the Quad BNC Adapter
Module for Total Access 3000 and Total Access 3010.
Receive (1)
Input
(BNC)
Receive (2)
Input
(BNC)
Transmit (1)
Output
(BNC)
Splitter
Splitter
R-Term
R-Term
R-Term
R-Term
Pin 1 RX to MUX A (EC-1 #1)
Pin 22 RX to MUX B (EC-1 #1)
Pins 2, 4, 5, 6 (A RX Gnd)
Pins 18, 19, 21 (B RX Gnd)
Pin 20 RX to MUX B (EC-1 #2)
20
Pin 3 RX to MUX A (EC-1 #2)
3
Pin 8 TX from MUX A (EC-1 #1)
Pin 15 TX from MUX B (EC-1 #1)
Pins 7, 9, 11, 12 (A TX Gnd)
Pins 14, 16, 17 (A TX Gnd)
Transmit (2)
Pin 10 TX from MUX A (EC-1 #2)
Output
(BNC)
Pin 13 TX from MUX B (EC-1 #2)
Figure 2. Block Diagram of the Quad BNC Adapter Module
2 61181007L2-5A
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