ADTRAN Switch TRDDS R User Manual

Section 61291021L5-5A  
Issue 1, April 1999  
CLEI Code # D4OIKTU8 _ _  
TRDDS-R  
Total Reach® All Rate DDS Termination Unit  
For Outside Plant and Customer Premise  
Installation and Maintenance  
CONTENTS  
1.  
2.  
3.  
4.  
5.  
GENERAL........................................................................... 1  
OPTIONS ............................................................................ 2  
INSTALLATION ................................................................ 2  
TESTING............................................................................. 4  
DEPLOYMENT GUIDELINES ......................................... 6  
6.  
WARRANTY AND CUSTOMER SERVICE ................... 7  
Custom  
T
elecom  
E190349  
FIGURES  
Figure 1.  
Figure 2.  
Figure 3.  
Figure 4.  
Figure 5.  
Figure 6.  
ADTRAN TRDDS-R ............................................. 1  
Total Reach DDS Circuit Diagram ........................ 2  
TRDDS-R Option Switch ....................................... 2  
Circuit Card Pin Assignments ................................ 3  
Signal Loss Indication ............................................ 4  
Total Reach Dataport Bidirectional Loopback  
Pass-Thru Mode...................................................... 6  
Total Reach Dataport Bidirectional Loopback  
Figure 7.  
Normal Mode .......................................................... 6  
TABLES  
Table 1.  
Table 2.  
Table 3.  
Table 4.  
SW 1  
Wiring Connections ................................................ 3  
UL/CUL Telecommunications Codes .................... 3  
Faceplate Indicators ................................................ 4  
TRDDS-R and Total Reach Dataport Loopback  
Interoperability Matrix ........................................... 4  
Latching Loopback Sequences ............................... 5  
Alternating Loopback Sequences........................... 5  
Total Reach Dataport Loopbacks ........................... 6  
Cable Type and Temperature Loss Data  
Figure 1. ADTRAN TRDDS-R  
Table 5.  
Table 6.  
Table 7.  
Table 8.  
NOTE  
@ 13.3 kHz ............................................................. 7  
TRDDS Insertion Loss Measurements .................. 7  
The TRDDS-R must be used with an appropriate  
Total Reach dataport unit.  
Table 9.  
The TRDDS-R is an auto-rate adaptive digital network  
interface typically located at the customer premises point-of-  
demarcation. The TRDDS-R will deliver a standard four-  
wire DDS signal up to 18 kft beyond the TRDDS-R. Both  
customer and network interfaces are equipped with outside  
plant lightning protection. The customer interface is capable  
of receiving signals attenuated to -45dB at the Nyquist  
frequency of four-wire AMI DDS. In addition to  
terminating the two-wire extended range signal, the TRDDS-  
R functions as a regenerative loopback device supporting  
Telco-generated testing. The TRDDS-R unit is available in  
T200 mechanics, and may be optioned for 0 or –10 dB output  
toward the customer. Figure 2 illustrates the Total Reach  
DDS Circuit Diagram.  
1. GENERAL  
This practice provides installation and maintenance  
procedures for the ADTRAN TRDDS-R Total Reach® All  
Rate DDS Termination Unit. Figure 1 is an illustration of the  
ADTRAN TRDDS-R Unit.  
The ADTRAN TRDDS-R is a span-powered termination  
unit designed to deliver data rates up to 64 kbps and provide  
testing functionality. Used in combination with a Total  
Reach dataport unit, the TRDDS-R converts the two-wire  
Total Reach signal to the traditional four-wire DDS signal for  
presentation to the customer.  
Trademarks: Any brand names and product names included in this document are trademarks,  
registered trademarks, or trade names of their respective holders.  
61291021L5-5A  
Page 1  
 
The unit should be wired as follows:  
Electrical Code Compliance  
Table 2 shows the UL/CUL Telecommunications Codes  
for the TRDDS-R. The TRDDS-R complies with the  
requirements covered under UL 1459 third edition and is  
intended to be installed in an enclosure with an  
Installation Code (IC) of “B” or “E”. The TRDDS-R is  
intended for installation in restricted access locations  
only.  
• Network pair to terminal strip TT and TR positions  
• To Customer and From Customer pairs through  
customer 8-pin modular connector  
or  
To Customer (DRT, DRR) and From Customer  
(DTT, DTR) to designated terminal strip positions  
No rate selection is necessary for the TRDDS-R. The  
unit automatically adapts to the service rate of the Total  
Reach dataport in the Central Office (CO).  
Table 2. UL/CUL Telecommunications Codes  
INPUT  
OUTPUT  
IC  
A
X
-
TC  
X
TRDDS-R  
PC  
C
C
Frame Ground  
1
11  
27  
17  
Display Indicators  
The TRDDS-R contains faceplate-mounted LED  
indicators which display the operating status and service  
rate. The indicators are described in Table 3.  
(TT)  
(TR)  
(DTT)  
(DTR)  
41  
47  
55  
49  
From  
Customer  
To  
Network  
(DRT)  
(DRR)  
5
To  
Customer  
Signal Meter  
The TRDDS-R contains a signal meter that approximates  
the amount of dB loss on the TRDDS loop at 13.3 kHz  
(135 termination), the Nyquist frequency of TRDDS.  
The signal meter on the TRDDS-R may be used to verify  
that the loop loss is actually within TRDDS deployment  
guidelines without the requirement of peripheral test  
equipment. The signal meter is activated automatically  
upon power up during the TRDDS training sequence and  
remains activated until synchronization occurs (usually  
30-90 seconds after power-up). For example, if the signal  
meter only illuminates the 2.4 LED, then the loop loss is  
too great for TRDDS deployment. If the signal meter  
illuminates 2.4 and 4.8 (only two LEDs), then the  
TRDDS loop loss is between 50 and 56 dB and the loop is  
considered marginal for TRDDS deployment. If three or  
more rate LEDs are illuminated during TRDDS train-up,  
then the circuit is considered to be within TRDDS  
deployment guidelines. See Figure 5 for a translation of  
the signal meter loss ranges in dB. If the loop loss  
indicates a marginal loop for TRDDS deployment, then a  
more precise loop loss measurement can be made with the  
appropriate test equipment.  
15  
Figure 4. Circuit Card Pin Assignments  
Table 1. Wiring Connections  
Terminal  
Strip  
T400  
Pin  
Customer  
RJ48  
Pair  
Designations Number  
To/From  
Network  
TT, TR  
41, 47  
5, 15  
To  
Customer  
(Rx)  
DRT, DRR  
7, 8  
1, 2  
From  
Customer  
(Tx)  
DTR, DTT  
49, 55  
61291021L5-5A  
Section 61291021L5-5A, Issue 1  
Page 3  
 
Table 3. Faceplate Indicators  
LED  
SIGNAL LOSS  
(dB)  
Indicator  
Status  
Explanation  
0-10  
SC  
64  
10-20  
20-30  
30-40  
40-50  
50-56  
>56  
ON  
Unit is powered up  
56  
19.2  
9.6  
4.8  
2.4  
Green  
Synchronized with  
TROCU DP  
SYNC  
Red  
Not synchronized with  
TROCU DP; check for  
continuity, load coils, and  
other abnormal line  
conditions  
Signal level indicated during  
synchronization  
Errors occured on the  
incoming data stream  
during the previous  
second; check for  
abnormal line conditions  
closer to the TRDDS-R  
Figure 5. Signal Loss Indication  
NEAR CRC  
FAR CRC  
LBK  
ON  
Table 4. TRDDS-R and Total Reach Dataport  
Loopback Interoperability Matrix  
Errors occured toward the  
Total Reach dataport  
during the previous  
second; check for  
abnormal line conditions  
closer to the CO  
Total Reach DDS  
Dataports  
TRDDS-R Loopback  
Response  
ON  
ON  
1291006L1, L2, L3, L4,  
1410105L2, 1425105L2,  
1430105L2, 1433105L1,  
1433105L3, 1433105L4  
NIE  
Loopback is activated  
towards network  
1291006L5 (US West)  
1433105L2 (US West)  
OCU and NIE  
Flashing Bidirectional loopback at  
Total Reach dataport, Data  
Pass-Thru  
SC  
64  
ON  
Secondary Channel  
enabled  
4. TESTING  
Loopback Testing  
ON  
64 kbps data rate enabled  
Loopback tests can be performed from the CO to verify  
proper loop and TRDDS-R operation. The TRDDS-R  
features auto-detection capability to determine the model of  
Total Reach dataport installed in the central office. This  
feature allows the TRDDS-R to support multiple loopback  
applications. See Table 4 for an interoperability matrix of  
loopback responses supported by the TRDDS-R. The  
TRDDS-R always provides an NIE latching loopback at all  
rates. See Table 5 and 6 for latching and alternating loopback  
sequences. The TRDDS-R supports testing of the two-wire  
loop from the remote end when the CO unit is performing a  
bidirectional loopback.  
56  
ON  
ON  
56 kbps data rate enabled  
19.2  
19.2 kbps data rate  
enabled  
9.6  
4.8  
2.4  
ON  
ON  
ON  
9.6 kbps data rate  
enabled  
4.8 kbps data rate  
enabled  
2.4 kbps data rate enabled  
Page 4  
Section 61291021L5-5A, Issue 1  
61291021L5-5A  
 
Table 5. Latching Loopback Sequences  
Number of  
Initiating OCU Latching Loopback to Loop the  
TRDDS-R (US West Only)  
SW1-6 on the TRDDS-DP must be ON to enable  
latching loopback response.  
From a test system or set, send an OCU latching  
Function  
Byte Code  
Received  
Bytes  
Clear existing  
loopbacks  
Transition in  
progress (TIP)  
*0111010  
Minimum of  
35 TIP bytes  
loopback sequence.  
Send a selected test pattern and test for error-free  
operation.  
Upon completion of this test, advance to  
Terminating OCU, CSU or NIE Latching  
Loopback for latching loopback termination.  
Identify device Loopback select  
Minimum of  
35 LSC bytes  
to be looped  
code (LSC)  
*1010101 - OCU  
*0110001 - CSU  
*1000001 - NIE  
Initiating CSU Latching Loopback to Loop a  
DSU/CSU (US West Only)  
SW1-6 on the TRDDS-DP must be ON to enable  
Prepare to loop; Loopback enabled Minimum of  
latching loopback response.  
send MAP code (LBE)  
100 LBE  
bytes  
after 30 bytes  
*1010110  
From a test system or set, send a CSU latching  
loopback sequence. This instructs the TRDDS-  
DP to notify the TRDDS-R of a CSU loopback  
request. The TRDDS-R will reverse sealing  
current to the DSU/CSU. The DSU/CSU should  
loop when reversed sealing current is detected.  
Activate  
loopback  
Far-End voice  
(FEV)  
Minimum of  
32 FEV  
bytes  
*1011010  
Minimum of 35 TIP bytes required to disable  
established latching loopback.  
Send a selected test pattern and test for error-free  
operation.  
*Don't Care bit  
Upon completion of this test, advance to  
Terminating OCU, CSU or NIE Latching  
Loopback for latching loopback termination.  
Network Interface Equipment Latching  
Loopback  
Table 6. Alternating Loopback Sequences  
Function  
Received Bytes  
The NIE latching loopback method can be used to loop  
the TRDDS-R at all rates. This loopback test may  
require programming of the loopback select code or  
the complete sequence into the test system.  
Active loopback  
Four consecutive bytes of  
specified loopback code  
*0101010 - OCU  
*0101000 - CSU  
*0101100 - DSU  
Terminating OCU, CSU or NIE Latching  
Loopback  
• From a test system or set, send a Latching  
Loopback Disable command (35 TIP bytes).  
Maintain loopback and Data byte alternating with  
test for bit errors  
loopback code  
example:  
*DDDDDD1/*0101010  
Total Reach Dataport Bidirectional Loopback  
Support  
The Total Reach dataport will execute a bidirectional  
loopback when performing a loopback at the dataport.  
The Total Reach dataport responds to either the OCU  
or DS0 loopback command, whichever loopback is  
applicable to the dataport version. Refer to Table 7 for  
Total Reach dataport loopback support.  
Clear loopback  
*Don't care bit  
Four consecutive data  
bytes without a specified  
loopback code  
61291021L5-5A  
Section 61291021L5-5A, Issue 1  
Page 5  
 
Total Reach  
Dataport  
Table 7. Total Reach Dataport Loopbacks  
TRDDS-R  
Total Reach DDS  
Dataports  
Total Reach DDS  
Dataport Loopbacks  
X
DSU/CSU  
X
Open Loop  
1291006L1, L2, L3, L4,  
1410105L2, 1425105L2,  
1430105L2, 1433105L1  
1433105L3, 1433105L4  
OCU  
DS0  
Bidirectional  
loopback  
Figure 7. Total Reach Dataport Bidirectional  
Loopback Normal Mode  
1291006L5 (US West)  
1433105L2 (US West)  
5. DEPLOYMENT GUIDELINES  
The TROCU DP and TRDDS-R use technology intended  
to eliminate the need for repeaters and concerns over  
impairments caused by typical noise and bridged tap.  
Listed below are the loop design guidelines for TRDDS  
(see Tables 8 and 9 for more information):  
If the TRDDS-R detects a bidirectional loopback during  
power-up synchronization, the TRDDS-R allows data to pass  
on the four-wire interface by entering pass-thru mode. This  
permits a standard, portable DDS test set, connected to the  
four-wire customer interface of the TRDDS-R, to verify the  
integrity of the two-wire loop by transmitting a test pattern  
and examining the returning data for synchronization and  
errors. The TRDDS-R LBK indicator always flashes during  
a Total Reach dataport bidirectional loopback in the pass-thru  
mode. Refer to Figure 6 for an illustration of the bidirectional  
loopback pass-thru mode.  
• All loops must be nonloaded.  
• Actual Measured Loss (AML) should not exceed 50  
dB at 13.3 kHz (135 termination), the Nyquist  
frequency of TRDDS.  
NOTE  
The 50 dB AML limit includes 6 dB of signal  
margin to account for potential near-end cross  
talk(NEXT)fromotherdigitalservicesthatmay  
be provisioned in the same binder group.  
Total Reach  
Dataport  
TRDDS-R  
Test Unit  
Data  
Pass-Thru  
• Loop length should not exceed 50 kft.  
• Bridged tap length should not exceed 12 kft.  
• Background noise level should not exceed  
34 dBrn.  
• Impulse noise should not exceed  
-40 dBm, (+50 dBrn).  
Bidirectional  
loopback  
Figure 6. Total Reach Dataport Bidirectional  
Loopback Pass-Thru Mode  
If a Total Reach dataport bidirectional loopback is invoked  
after the TRDDS-R achieves synchronization, the TRDDS-R  
will not pass or receive data from the CPE or DDS test set.  
This is consistent with current DDS testing methods and is  
referred to as the Total Reach dataport bidirectional loopback  
normal mode. For testing purposes, the installer may choose  
to initiate the TRDDS-R to pass-thru mode. Once the  
bidirectional loopback is executed in normal mode, unseat  
and reseat the TRDDS-R and allow the unit to train-up. Once  
trained, the TRDDS-R will revert to pass-thru mode for  
further testing. Refer to Figure 7 for TRDDS operation  
during bidirectional loopback in normal mode.  
NOTE  
Measure noise with 50 kbit weighting  
characteristic approximating a filter with a  
passband of 40 Hz to 30 kHz. Background noise  
levelorimpulsenoiselevelisreferencedfrom56/  
64 kbps data rate in TR62310.  
Page 6  
Section 61291021L5-5A, Issue 1  
61291021L5-5A  
 
Table 8. Cable Type and Temperature Loss Data @ 13.3 kHz  
PLASTIC CABLE  
dB LOSS/kft  
PAPER CABLE  
dB LOSS/kft  
19 Gauge PIC (0F)  
19 Gauge PIC (70F)  
19 Gauge PIC (120F)  
0.5302  
0.6083  
0.6610  
19 Gauge PULP (0F)  
19 Gauge PULP (70F)  
19 Gauge PULP (120F)  
0.5616  
0.6415  
0.6955  
22 Gauge PIC (0F)  
22 Gauge PIC (70F)  
22 Gauge PIC (120F)  
0.912  
1.0258  
1.1015  
22 Gauge PULP (0F)  
22 Gauge PULP (70F)  
22 Gauge PULP (120F)  
0.9454  
1.0606  
1.1370  
24 Gauge PIC (0F)  
24 Gauge PIC (70F)  
24 Gauge PIC (120F)  
1.2571  
1.3982  
1.4917  
24 Gauge PULP (0F)  
24 Gauge PULP (70F)  
24 Gauge PULP (120F)  
1.2900  
1.4324  
1.5268  
26 Gauge PIC (0F)  
26 Gauge PIC (70F)  
26 Gauge PIC (120F)  
1.6823  
1.8568  
1.9718  
26 Gauge PULP (0F)  
26 Gauge PULP (70F)  
26 Gauge PULP (120F)  
1.6751  
1.8469  
1.9608  
Table 9. TRDDS Insertion Loss Measurements 6. WARRANTY AND CUSTOMER SERVICE  
ADTRAN will replace or repair this product within 10  
years from the date of shipment if it does not meet its  
published specifications or fails while in service (see  
ADTRAN Carrier Network Equipment Warranty,  
Repair, and Return Policy and Procedure, document  
60000087-10A).  
TRDDS  
13.3 kHz compared to 28 kHz for traditional  
DDS service  
Line  
Configuration  
@ 13.3 kHz  
@ 28 kHz  
65.35 dB  
62.50 dB  
59.33 dB  
Contact Customer and Product Service (CAPS) prior to  
returning equipment to ADTRAN.  
27 kft 26 AWG  
36.25 kft 24 AWG  
50 kft 22 AWG  
50.12 dB  
50.00 dB  
50.24 dB  
For service, CAPS requests, or further information,  
contact one of the following numbers:  
ADTRAN Technical Support  
(800) 726-8663  
Standard hours: Monday-Friday, 7 a.m.-7 p.m. CST  
Emergency hours: 7 days/week, 24 hours/day  
ADTRAN Sales  
(800) 827-0807  
ADTRAN Repair/CAPS  
(256) 963-8722  
Repair and Return Address  
ADTRAN, Inc.  
Customer & Product Service (CAPS) Department  
901 Explorer Boulevard  
Huntsville, Alabama 35806-2807  
61291021L5-5A  
Section 61291021L5-5A, Issue 1  
Page 7  
 

3Com Digital Camera 10242063 00 User Manual
3M Projector 8749 User Manual
Aiwa CD Player NSX V2100 User Manual
Alpine Stereo Amplifier MRP F550 User Manual
Alto Shaam Oven 1000 TH SERIES User Manual
Amana Refrigerator W10175445A User Manual
Amcor Air Cleaner AM 90 IB User Manual
Amcor Electric Heater AMH9 User Manual
Axis Communications Printer AXIS 5470e User Manual
Baldor Motor Scooter MN710 User Manual