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ADTRAN 1245001L6, Руководство по установке и обслуживанию

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61245001L6-5G

Section 61245001L6-5, Issue 7

19

Table 11.  Product Specifications

Loop Interface

Modulation Type ........................................................ 2B1Q
Mode ........................................................................... Full Duplex, Echo Cancelling
Number of Pairs ......................................................... Two
Bit Rate ....................................................................... 784 kbps per pair
Baud Rate ................................................................... 392K baud per pair
Service Range ............................................................ Defined by Carrier Service Area Guidelines
Loop Loss ................................................................... 36 dB maximum @ 200 kHz
Bridged Taps .............................................................. Single Taps < 2000 feet, Total Taps < 2500 feet
Performance ............................................................... Compliant with Bellcore TA-NWT-001210
HDSL Tx Signal Level .............................................. 13.5 dBm
Input Impedance ......................................................... 135

Ω

Return Loss ................................................................ 20 dB (40 kHz to 200 kHz)

Network Interface

4-WIRE DSX-1

DSX-1 Output Level .................................................. 0 dB
DSX-1 Line Build Out ............................................... 0-133 feet ABAM

134-266 feet ABAM
267-399 feet ABAM
400-533 feet ABAM
534-655 feet ABAM

DSX-1 Line Code ....................................................... AMI, B8ZS
DSX-1 Format ............................................................ Unframed, SF, ESF

Power

Tested with the ADTRAN Low-Voltage HRE (P/N 1244041L2) and the ADTRAN Low Voltage HTU-R (1245021L1).

Total Power .................................................................... -48 Vdc @ 200 

m

A with HTU-R

-48 Vdc @ 300 

m

A with HTU-R and HRE

-48 Vdc @ 510 

m

A with HTU-R and two HREs

HTU-C M R Power Dissipation .................................... 5.2 watts with HTU-R

6.2 watts with HRE and HTU-R
8.6 watts with two HREs and HTU-R

Span Power .................................................................... -137 or -190 Vdc nominal for voltage and current limit at 125 

m

A +/-5%

(Internally Generated)

Fusing ............................................................................. 1.00 A (not field-replaceable)

Clock

Clock Sources ............................................................ Internal, DSX-1 Derived
Internal Clock Accuracy ............................................

±

 25 ppm (exceeds Stratum 4).  Meets T1.101 timing requirements.

Tests

Diagnostics ................................................................. Self-Test, Local Loopback (HTU-C), Remote Loopback (HTU-R), HRE

Loopback

Physical

23" 220 Office Repeater Shelf-Mounted
Dimensions ................................................................. 5.6" High x 1.25' Wide x 10.1" Deep
Weight ........................................................................ Less than 1 lb.

Environment

Temperature ............................................................... Operating (Standard): -40

°

 to +70

°

C;  Storage: -40

°

 to +85

°

C

Control Port

Interface ...................................................................... RS-232 (DB-9)
Terminal Type ............................................................ VT100 or compatible
Async Speed ............................................................... 1.2 kbps to 19.2 kbps
Data Format ................................................................ 8 data bits, no parity, 1 stop bit

Part Number

HTU-C 220/E220 Circuit Pack M R ......................... 1245001L6

Содержание 1245001L6

Страница 1: ...n Powering Diagram 5 Figure 5 HTU C M R Bantam Jack Arrangement 6 Figure 6 HDSL Loopbacks 6 Figure 7 RS 232 DB9 Pin Assignments 7 Figure 8 Introductory Menu Screen 10 Figure 9 HDSL Main Menu Screen 10 Figure 10 Current System Status Screen 11 Figure 10A Current System Status Screen HRE 11 Figure 11 Performance History Screen 12 Figure 11A Performance History Screen HRE 12 Figure 12 Provisioning Sc...

Страница 2: ...plies a 48 Vdc voltage to the fuse alarm bus and all front panel indicators will turn off These fuses are not field replaceable The 220 E220 HTU C M R uses a DC to DC converter to derive its internal logic and span powering voltages from the 48 Vdc office supply Span powering voltages meet all requirements of Class A2 voltages as specified by Bellcore GR 1089 CORE Revision History This practice is...

Страница 3: ...of Signal DS1 at the terminating end of the HDSL circuit AIS is generated from the HTU R toward the network LBK Upon customer Loss of Signal DS1 at the terminating end of the HDSL circuit a logical network loopback is initiated at the HTU R CDI 3 Upon customer Loss of Signal DS1 at the terminating end of the HDSL circuit the HTU R returns DS1 Idle Signal to the network This signal is also known as...

Страница 4: ...ink briefly LP2 Indicates five possible states of the HDSL signals on Loop 2 Off No synchronization of HTU C and HTU R on Loop 2 Red Poor signal quality on Loop 2 10 7 BER Yellow Marginal signal quality on Loop 2 2 dB margin above 10 7 BER Green Good signal quality on Loop 2 2 dB margin above 10 7 BER Blinking An error detected on either end of Loop 2 will cause this LED to blink briefly DSX Indic...

Страница 5: ...e HFAC controlled alarms see the HFAC Installation and Maintenance practice ADTRAN document number 61244051LX 5 3 CONNECTIONS The 220 E220 HTU C M R occupies one card slot in a 220 Office Repeater Bay Power and alarm signals are provided to the card through the backplane of the shelf DSX 1 and HDSL loop signals are connected to the wire wrap pins or mass termination shelf connectors corresponding ...

Страница 6: ... This unit contains smartloop technology That is if the unit is optioned to operate in an unframed mode it constantly monitors the DSX 1 for a framing pattern If a framed loopback control sequence is sent then the unit will initiate the proper loopback command see Appendix A of this practice The loopback condition imposed in both cases is a logic level loopback at the point within the HTU C M R wh...

Страница 7: ... characters or screen timeouts 6 7 8 9 TXD Transmit Data RXD Receive Data SGN Signal Ground 1 2 3 4 5 Figure 7 RS 232 DB 9 Pin Assignments Abbreviation ES SES UAS SF ESF B8ZS AMI LBO BPV NIU S N 15M 24H Definition Errored Seconds DSX DS1 SF Second in which a BPV or frame bit error occurs ESF Second in which a BPV or CRC error occurs HDSL Second in which a CRC error occurs Severely Errored Seconds ...

Страница 8: ... transferred into the 24 hour performance data register also accessed using the Performance History screen illustrated in Figure 11 Type H once to view the Performance History screen for HRE 1 type H a second time to view the HRE Performance History Screen for HRE 2 See Figure 11A for the HRE Performance History Screen At the Current System Status screen type Z to reset the current performance reg...

Страница 9: ...has defined the following as guidelines that correspond to the operation of the HTU C faceplate LEDs labeled LP1 and LP2 Margin 0 Red Poor Loop Quality 0 Margin 2 Yellow Marginal Loop Quality Margin 2 Green Good Loop Quality Figure 13 and Figure 14 illustrate the HDSL Loopback and Self Test Option screens Loopbacks and Self Test may be evoked or terminated using these screens A status of current l...

Страница 10: ...FORMATION SIGNAL QUALITY HTU R INFORMATION SIGNAL QUALITY X 9 X X 9 X S N A1875 L X 8 L X S N L X 8 L X CLEI T1L1B264AA O X 7 O X CLEI O X 7 O X MANF 07 98 O X 6 O X MANF O X 6 O X P X 5 P X P X 5 P X HRE 1 INFORMATION X 4 X X 4 X 1 X 3 2 X 1 X 3 2 X S N j810C2360 X 2 X X 2 X CLEI T1R5PPYDAA X 1 X X 1 X MANF 04 98 X 0 X X 0 X AT HTU C AT HTU R Press M to view Main Menu CIRCUIT ID Circuit XXXXX 02 ...

Страница 11: ...X 1 X 3 2 X N C 1 X 3 2 X X 2 X ____ LOOP2 ____ LOOP2 ____ X 2 X X 1 X X 1 X X 0 X X 0 X Press Z to zero registers M for Main Menu P for previous view CIRCUIT ID Circuit XXXXX 02 01 99 11 14 38 LOOP 1 NETWORK LOOP 2 CURRENT SYSTEM STATUS LOOP 1 CUSTOMER LOOP 2 HTU C HTU R 02 dB 02 dB LOSS 32 dB 32 dB YES YES SYNC YES YES 000 00000 000 00000 ES 15M 24H 000 00000 000 00000 000 00000 000 00000 SES 15...

Страница 12: ...30 Press H to view HRE 1 history Press B to go back 8 hours Press M to return to the Main Menu CIRCUIT ID Circuit XXXXX 02 01 99 11 25 00 PERFORMANCE HISTORY VIEW 1 HRE NETWORK LP1 RECEIVER 24 HOUR REGISTERS 15 MINUTE REGISTERS ES SES ES SES ES SES 00000 00000 CURRENT 000 000 1 1 000 000 17 000 000 2 2 000 000 18 000 000 3 3 000 000 19 000 000 4 4 000 000 20 000 000 5 PREVIOUS 5 000 000 21 000 000...

Страница 13: ...ding number to toggle loopback option Press M to return to the Main Menu CIRCUIT ID Circuit XXXXX 02 01 99 11 18 17 PROVISIONING ___________________________________________________ PROVISIONS SETTINGS DSX 1 LINE BUILDOUT 0 133 FEET DS1 OUTPUT LEVEL 0 dB DSX 1 DS1 LINE CODE B8ZS DSX 1 FRAMING ESF DS1 FRAMING ESF LOOPBACK TIMEOUT NONE CUSTOMER LOSS RESPONSE CDI LATCHING LOOPBACK MODE T1 ____________...

Страница 14: ...IRCUIT ID Circuit XXXXX 02 01 99 11 18 38 TROUBLESHOOTING DISPLAY _____ _____ _____ HTU C HRE 1 HTU R NET CUST _____ _____ _____ NO ALARM CONDITIONS Press M to return to the Main Menu CIRCUIT ID Circuit XXXXX 02 01 99 11 17 51 SELF TEST Press S to initiate HTU C and HTU R self tests Press M to return to the Main Menu ...

Страница 15: ...e 7 15 CIRCUIT ID Circuit XXXXX 02 01 99 11 12 52 SET TIME DATE CIRCUIT ID 1 SET TIME 2 SET DATE 3 SET CIRCUIT ID Choose an option by pressing the corresponding number Press M to return to Main Menu Figure 16 Set Time Date Circuit ID Screen ...

Страница 16: ...esistive termination is provided in Table 8 An approximation for the maximum amount of wideband noise on an HDSL local loop as measured by a 50 kbps filter is 31 dBrn An approximation for the maximum level of impulse noise as measured using a 50 kbps filter on an HDSL loop is 50 dBrn NOTE These approximations are to be used as guidelines only and may vary slightly on different loops Adhering to th...

Страница 17: ...ly connected to the shelf 2 Insert the HTU C M R into an operational slot and check the LED indicators When the unit is powered at least one LED will be on 3 If Step 1 passes but Step 2 fails replace the HTU C Table 10 Troubleshooting Guide Table 9 Power Consumption Worksheet Step 1 Enter size of fuse for shelf Amps Size required for over current protection i e 100 75 50 Step 2 Determine the mix o...

Страница 18: ...d Procedure document 60000087 10 Contact Customer And Product Service CAPS prior to returning equipment to ADTRAN For service CAPS requests or further information contact one of the following numbers ADTRAN Sales Pricing Availability 800 827 0807 ADTRAN Technical Support Presales Applications Postsales Technical Assistance 800 726 8663 Standard hours Monday Friday 7 a m 7 p m CST Emergency hours 7...

Страница 19: ...the ADTRAN Low Voltage HTU R 1245021L1 Total Power 48 Vdc 200 mA with HTU R 48 Vdc 300 mA with HTU R and HRE 48 Vdc 510 mA with HTU R and two HREs HTU C M R Power Dissipation 5 2 watts with HTU R 6 2 watts with HRE and HTU R 8 6 watts with two HREs and HTU R Span Power 137 or 190 Vdc nominal for voltage and current limit at 125 mA 5 Internally Generated Fusing 1 00 A not field replaceable Clock Cl...

Страница 20: ...20 Section 61245001L6 5 Issue 7 61245001L6 5G ...

Страница 21: ... method produces periodic control sequences that are not overwritten by the DS1 framing bits The overwrite method produces periodic control sequences However once per frame the framing bit overwrites one of the bits in the control sequence The unit can detect the loopback activation or deactivation code sequence only if an error rate of 1E 03 or better is present DDS Latching Loopback Operation If...

Страница 22: ...in HTU C C 5in7 1111100 Loopback data from customer toward customer in HTU R C 4in6 111100 Loopback data from customer toward customer in first HRE C 5in6 111110 Loopback data from customer toward customer in second HRE N FF1E Loopback data from network toward network at HTU C C 3F1E Loopback data from customer toward customer at HTU C N FF04 Loopback data from network toward network at HRE1 N FF0...

Страница 23: ...be sent 200 errors will be injected every 20 seconds When the pattern is removed the unit will remain in loopback If the pattern is reinstated the injection of 200 bit errors will resume at 20 second intervals Loopdown 9393 1001 0011 1001 0011 Any HTU C and HRE units currently in loopback towards the network will loopdown and will retain the armed state Query Loopback D5D5 1101 0101 1101 0101 If t...

Страница 24: ...A 4 Section 61245001L6 5 Issue 7 61245001L6 5G ...

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