ADTRAN TRDDS-R User Manual

TRDDS-R
Total Reach® All Rate DDS Termination Unit
For Outside Plant and Customer Premise
Installation and Maintenance
CONTENTS
1. GENERAL........................................................................... 1
2. OPTIONS ............................................................................ 2
3. INSTALLATION ................................................................ 2
4. TESTING............................................................................. 4
5. DEPLOYMENT GUIDELINES ......................................... 6
6. WARRANTY AND CUSTOMER SERVICE ................... 7
FIGURES
Figure 1. ADTRAN TRDDS-R ............................................. 1
Figure 2. Total Reach DDS Circuit Diagram ........................ 2
Figure 3. TRDDS-R Option Switch....................................... 2
Figure 4. Circuit Card Pin Assignments ................................ 3
Figure 5. Signal Loss Indication ............................................ 4
Figure 6. Total Reach Dataport Bidirectional Loopback
Pass-Thru Mode...................................................... 6
Figure 7. Total Reach Dataport Bidirectional Loopback
Normal Mode.......................................................... 6
TABLES
Table 1. Wiring Connections................................................ 3
Table 2. UL/CUL Telecommunications Codes.................... 3
Table 3. Faceplate Indicators................................................ 4
Table 4. TRDDS-R and Total Reach Dataport Loopback
Interoperability Matrix ........................................... 4
Table 5. Latching Loopback Sequences............................... 5
Table 6. Alternating Loopback Sequences........................... 5
Table 7. Total Reach Dataport Loopbacks........................... 6
Table 8. Cable Type and Temperature Loss Data
@ 13.3 kHz ............................................................. 7
Table 9. TRDDS Insertion Loss Measurements .................. 7
Section 61291021L5-5A
CLEI Code # D4OIKTU8 _ _
Custom Telecom
E190349
SW 1
Figure 1. ADTRAN TRDDS-R
NOTE
The TRDDS-R must be used with an appropriate Total Reach dataport unit.
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.
TRDDS-R is an auto-rate adaptive digital network
The interface typically located at the customer premises point-of­demarcation. The TRDDS-R will deliver a standard four­wire 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 TRDDS­R 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.
Page 161291021L5-5A Section 61291021L5-5A, Issue 1
Channel Bank
Customer Premises
T-Carrier
TR
OCU
DP
or Outside Plant
2-Wire Loop
T/R Pair
4-Wire Customer
TRDDS-R
18 kft or -45 dB
Interface
DSU/CSU
Up to
Figure 2. Total Reach DDS Circuit Diagram
Features
• Two-wire deployment
• Repeaterless operation
• Bridged tap tolerant
• Span-powered
• Auto-rate adaption on subrates, 19.2 and 56 kbps rates, including secondary channel, and 64 kbps clear channel capability
• LED indicators for Power, SYNC, NEAR/FAR CRC, Service Rate, and Loopback
• T200 mechanics
• Signal-level indication during synchronization
• Automatic data pass-thru upon detection of bidirectional central Office (CO) loopback at power-up
• Extended range on customer interface up to 18 kft or -45 dB
• Sealing Current of 12 mA on the four-wire customer interface
With -130 Vdc, ADTRAN’s TRDDS system is in the A3 Class as specified in Bellcore TR-NWT-001089, Standard for Electrical Safety for Network Telecommunications Equipment.
2. OPTIONS
Rate is automatically configured from the Total Reach dataport unit. Options are selected using the SW1 switch as illustrated in Figure 3.
When 0 dB (SW1-1) is selected, the unit will transmit a 0 dB AMI signal across the four-wire interface toward the customer DSU/CSU. When -10 dB is selected, the unit will transmit a -10 dB AMI signal toward the DSU/CSU.
3. INSTALLATION
C A U T I O N !
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
After unpacking the unit, immediately inspect it for possible shipping damage. If damage is discovered, file a claim immediately with the carrier, and then contact ADTRAN Customer and Product Service (CAPS). See Section 6, Warranty and Customer
Service.
CAUTION
Never install telephone wiring during a lightning storm.
Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.
Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface.
Total Reach dataports normally provide -130 V of span-powering voltage to the TRDDS-R.
Wiring
For indoor applications, the TRDDS-R can be housed in a standard T400/T200 shelf or the ADTRAN T400/ T200 Single Mount Housing, part number 1212007L1. The ADTRAN T400/T200 single environmental housing, part number 1150087L1, is recommended for outside plant applications. Connections are made using screwdown terminals on the barrier strip located on the housing. Frame ground is presented on pins 1, 11, 17, and 27 to accommodate various T400/T200 mountings. Figure 4 describes the circuit card pinout and Table 1 shows the wiring connections for the TRDDS-R for both inside and outside mounting applications.
O
N
0dB -10dB
1
SW1
Figure 3. TRDDS-R Option Switch
Page 2 61291021L5-5ASection 61291021L5-5A, Issue 1
The unit should be wired as follows:
• 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
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.
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).
TRDDS-R
Frame Ground
11
1
17
27
To
Network
(TT)
41 55
(TR) (DTR)
47 49
15
(DTT)
(DRT)
5
(DRR)
From
Customer
To
Customer
Figure 4. Circuit Card Pin Assignments
Table 1. Wiring Connections
lanimreT
riaP
pirtS
snoitangiseD
morF/oT
RT,TT74,14
004T
niP
rebmuN
84JR
krowteN
oT
RRD,TRD51,58,7
remotsuC
)xR(
morF
TTD,RTD55,942,1
remotsuC
)xT(
Table 2. UL/CUL Telecommunications Codes
TUPNITUPTUO
CIA -
CTX X CPC C
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.
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
remotsuC
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.
Page 361291021L5-5A Section 61291021L5-5A, Issue 1
Table 3. Faceplate Indicators
rotacidnIsutatSnoitanalpxE
NO
neerG
CNYS
deR
snoitidnoc
puderewopsitinU
htiwdezinorhcnyS
PDUCORT
htiwdezinorhcnystoN
rofkcehc;PDUCORT
dna,sliocdaol,ytiunitnoc
enillamronbarehto
LED SIGNAL LOSS
(dB)
SC 64 56
19.2
9.6
4.8
2.4 Signal level indicated during
synchronization
0-10 10-20 20-30 30-40 40-50 50-56 >56
Signal level
ehtnoderuccosrorrE
maertsatadgnimocni
CRCRAENNO
CRCRAFNO
NO
KBL
CSNOlennahCyradnoceS
46NOdelbaneetaratadspbk46
65NOdelbaneetaratadspbk65
2.91NOetaratadspbk2.91
6.9NOetaratadspbk6.9
8.4NOetaratadspbk8.4
4.2NOdelbaneetaratadspbk4.2
gnihsalF
urhT-ssaP
delbane
delbane
delbane
delbane
suoiverpehtgnirud
rofkcehc;dnoces
snoitidnocenillamronba
R-SDDRTehtotresolc
ehtdrawotderuccosrorrE
tropatadhcaeRlatoT
suoiverpehtgnirud
rofkcehc;dnoces
snoitidnocenillamronba
OCehtotresolc
detavitcasikcabpooL
krowtensdrawot
takcabpoollanoitceridiB
ataD,tropatadhcaeRlatoT
Figure 5. Signal Loss Indication
Table 4. TRDDS-R and Total Reach Dataport
Loopback Interoperability Matrix
SDDhcaeRlatoT
stropataD
kcabpooLR-SDDRT
esnopseR
,4L,3L,2L,1L6001921
,2L5015241,2L5010141
EIN
,1L5013341,2L5010341
4L5013341,3L5013341
)tseWSU(5L6001921
EINdnaUCO
)tseWSU(2L5013341
4. TESTING Loopback Testing
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.
Page 4 61291021L5-5ASection 61291021L5-5A, Issue 1
Table 5. Latching Loopback Sequences
noitcnuFedoCetyB
gnitsixeraelC
skcabpool
ninoitisnarT
)PIT(ssergorp
0101110*
ecivedyfitnedI
depoolebot
tceleskcabpooL
)CSL(edoc
UCO-1010101*
USC-1000110*
EIN-1000001*
Initiating OCU Latching Loopback to Loop the TRDDS-R (US West Only)
forebmuN
devieceR
setyB
SW1-6 on the TRDDS-DP must be ON to enable latching loopback response.
From a test system or set, send an OCU latching
fomuminiM setybPIT53
loopback sequence.
Send a selected test pattern and test for error-free operation.
Upon completion of this test, advance to
fomuminiM
setybCSL53
Terminating OCU, CSU or NIE Latching Loopback for latching loopback termination.
Initiating CSU Latching Loopback to Loop a DSU/CSU (US West Only)
;pooloteraperP
edocPAMdnes
setyb03retfa
)EBL(
0110101*
etavitcA
kcabpool
)VEF(
0101101*
delbanekcabpooL
EBL001
setyb
eciovdnE-raF
VEF23
setyb
elbasidotderiuqersetybPIT53fomuminiM
.kcabpoolgnihctaldehsilbatse
tiberaCt'noD*
Table 6. Alternating Loopback Sequences
noitcnuFsetyBdevieceR
kcabpoolevitcA
UCO-0101010* USC-0001010* USD-0011010*
dnakcabpoolniatniaM
srorretibroftset
edockcabpool
:elpmaxe
0101010*/1DDDDDD*
kcabpoolraelC
atadevitucesnocruoF
edockcabpool
tiberact'noD*
fomuminiM
SW1-6 on the TRDDS-DP must be ON to enable latching loopback response.
From a test system or set, send a CSU latching loopback sequence. This instructs the TRDDS-
fomuminiM
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.
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.
Network Interface Equipment Latching Loopback
The NIE latching loopback method can be used to loop the TRDDS-R at all rates. This loopback test may
fosetybevitucesnocruoF
edockcabpooldeificeps
require programming of the loopback select code or the complete sequence into the test system.
Terminating OCU, CSU or NIE Latching Loopback
• From a test system or set, send a Latching
htiwgnitanretlaetybataD
Loopback Disable command (35 TIP bytes).
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
deificepsatuohtiwsetyb
or DS0 loopback command, whichever loopback is applicable to the dataport version. Refer to Table 7 for Total Reach dataport loopback support.
Page 561291021L5-5A Section 61291021L5-5A, Issue 1
Table 7. Total Reach Dataport Loopbacks
Total Reach
Dataport
SDDhcaeRlatoT
stropataD
SDDhcaeRlatoT
skcabpooLtropataD
,4L,3L,2L,1L6001921
,2L5015241,2L5010141
UCO 1L5013341,2L5010341 4L5013341,3L5013341
)tseWSU(5L6001921
0SD
)tseWSU(2L5013341
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.
Total Reach
Dataport
TRDDS-R
Test Unit
Data
Pass-Thru
Bidirectional
loopback
Figure 6. Total Reach Dataport Bidirectional
Loopback Pass-Thru Mode
TRDDS-R
Bidirectional
loopback
X X
Open Loop
DSU/CSU
Figure 7. Total Reach Dataport Bidirectional
Loopback Normal Mode
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):
• 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) from other digital services that may be provisioned in the same binder group.
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).
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
Measure noise with 50 kbit weighting characteristic approximating a filter with a passband of 40 Hz to 30 kHz. Background noise level or impulse noise level is referenced from 56/ 64 kbps data rate in TR62310.
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.
Page 6 61291021L5-5ASection 61291021L5-5A, Issue 1
NOTE
Table 8. Cable Type and Temperature Loss Data @ 13.3 kHz
ELBACCITSALPtfk/SSOLBdELBACREPAPtfk/SSOLBd
)F0(CIPeguaG91
)F07(CIPeguaG91
)F021(CIPeguaG91
)F0(CIPeguaG22
)F07(CIPeguaG22
)F021(CIPeguaG22
)F0(CIPeguaG42
)F07(CIPeguaG42
)F021(CIPeguaG42
)F0(CIPeguaG62
)F07(CIPeguaG62
)F021(CIPeguaG62
2035.0
3806.0
0166.0
219.0
8520.1
5101.1
1752.1
2893.1
7194.1
3286.1
8658.1
8179.1
Table 9. TRDDS Insertion Loss Measurements
SDDRT
ecivresSDD
eniL
noitarugifnoC
zHk3.31@zHk82@
)F0(PLUPeguaG91
)F07(PLUPeguaG91
)F021(PLUPeguaG91
)F0(PLUPeguaG22
)F07(PLUPeguaG22
)F021(PLUPeguaG22
)F0(PLUPeguaG42
)F07(PLUPeguaG42
)F021(PLUPeguaG42
)F0(PLUPeguaG62
)F07(PLUPeguaG62
)F021(PLUPeguaG62
6165.0
5146.0
5596.0
4549.0
6060.1
0731.1
0092.1
4234.1
8625.1
1576.1
9648.1
8069.1
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
lanoitidartrofzHk82otderapmoczHk3.31
published specifications or fails while in service (see
ADTRAN Carrier Network Equipment Warranty, Repair, and Return Policy and Procedure, document
60000087-10A).
Contact Customer and Product Service (CAPS) prior to
GWA62tfk72Bd21.05Bd53.56
returning equipment to ADTRAN.
For service, CAPS requests, or further information,
GWA42tfk52.63Bd00.05Bd05.26
contact one of the following numbers:
ADTRAN Technical Support
GWA22tfk05Bd42.05Bd33.95
(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
Page 761291021L5-5A Section 61291021L5-5A, Issue 1
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