Adtran 3000 HTU-C Folheto

: ADTRAN will replace or repair this product within the warranty period if it does not meet its published specifications or fails while in service. 

Warranty information can be found online at 

Note:

The above provisioning options are based on 7

th

 Generation HTU-R, 1247024L1 or 1247026L1. 

Option settings for previous HTU-Rs, 1246026L4 and/or 1246026L6, that are either not supported 

by the HTU-R, or are hardware options and cannot be provisioned from the HTU-C menu, will 

display a asterisk (*), and options that follow will be renumbered sequentially.

The BERT tester should be in Monitor mode for nonintrusive tests and Terminate mode for intrusive tests. Use the 

Provisioning screen to configure the HTU-C for DSX or MUX-fed network source. Use the Test screen to configure 

EQ jacks for Customer or Network direction. (The Network direction is only available when the HTU-C is MUX-

fed.) The BERT TX is only used in intrusive tests. Refer to the Total Access 3000/3010 HTU-C Installation and 

Maintenance Practice (P/N 61181107L1-5) for more detailed information.

♦

Nonintrusive DSX to Customer

♦

Connect HTU-C TX MON to BERT RX

♦

Allows access to DSX signal going to Customer

♦

Nonintrusive DSX from Customer

♦

Connect HTU-C RX MON to BERT RX

♦

Allows access to DSX signal coming from the Customer

♦

Intrusive DSX to Customer

♦

Connect HTU-C TX EX to BERT TX and HTU-C RX EQ to BERT RX

♦

Allows access to signal going to Customer

♦

Nonintrusive MUX to Customer

♦

Connect HTU-C TX MON to BERT RX

♦

Allows access to signal going to Customer

♦

Intrusive MUX to Network

♦

From the Test screen (Option 5 from the HDSL Main Menu), verify Equipment Jack = Network

♦

Connect HTU-C TX to BERT TX and HTU-C RX EQ to BERYT RX

♦

Allows direct access to signal going to and from the Network

♦

Intrusive MUX to Customer

♦

Verify Equipment Jack = To Customer

♦

HTU-C TX EQ to BERT TX and HTU-C RX EQ to BERT RX

♦

Allows direct access to signal going to and from the Customer

DSX-1 Line Buildout (in feet)

0-133; 133-266; 266-399; 399- 533; 533-655 

0-133

Line Code

AMI; B8ZS

B8ZS

Framing

Unframed; SF; ESF; Auto; Forced Conversion

Auto

NIU Loopback

Enabled; Disabled

Enabled

New England 1:6 Loopback

Enabled; Disabled

Disabled

Loopback Timeout

None; 60 Min; 120 Min

None

Customer Loss Response

Loopback; AIS; CDI

AIS

PRM Mode

None; NPRM; SPRM

None

DS1 Tx Level

0; 

–15 dB

0 dB

Span Power

Enabled; Disabled

Enabled

Network Source

DSX; MUX A; MUX B; Auto MUX

DSX

Card Service State

In Service; Out of Service-Unassigned; 
Out of Service-Maintenance

Out of Service-Unassigned

DSX1/DS1 External Alarm

Enabled; Disabled

Disabled

Use the Status Screen to view the current condition of the HTU-C and signal.

The following are indications that a problem can exist with HTU-C or signal quality:

♦

Is LOSS (pulse attenuation) >30 dB?

♦

Are there any errors counting on the ES, SES or UAS registers?

♦

Is the signal quality fluctuating (graphical meter indicators bouncing up and down)? This would occur when real 

time mode is active.

♦

If the signal quality is not fluctuating, is it unequal between the loops?

♦

Is the current signal quality indication (uppermost “X” on the meter) more than 1 dB below the maximum?

If these conditions are not present, the circuit should provide quality service. If any of these conditions exist, a cable 

problem or excessive signal loss is probable, and more testing should be done. These conditions can also reflect 

intermittent cable faults or excessive noise impairments. If intermittent faults or noise impairment are suspected, 

select the Performance Monitoring option from the HDSL Main Menu and review the historical performance data 

on the Performance Monitoring Screen.

Under normal operations, the following conditions apply:

♦

LOSS < 30 dB

♦

Signal margin of 3 dB or higher, no fluctuation and equal on both loops

♦

All HDSL Deployment Guidelines are met

For a complete list of these specifications, refer to the Total Access 3000/3010 HTU-C Installation and 

Maintenance Practice (P/N 61181107L1-5) for more information.

Refer to the Total Access 3000/3010 HTU-C Compliance Notice (P/N 61181107L1-17).

Shelf:  1  Slot:  3           Total Access System                 MM/DD/YY hh:mm:ss
Unacknowledged Alarms: None                                        Unit Number:   1
                     Circuit ID: 
Loop #1 <Network> Loop #2                             Loop #1 <Customer>Loop #2
--------- HTU-C ---------    Network Source -> DSX    --------- HTU-R ---------
01(01) dB       00(00) dB    <-  LOSS  CUR(MAX) ->    00(01) dB       01(01) dB
   Yes             Yes       <-     Sync     ->          Yes             Yes
000/00000       000/00000    <- ES   15M/24H ->       000/00000       000/00000
000/00000       000/00000    <- SES  15M/24H ->       000/00000       000/00000
000/00000       000/00000    <- UAS  15M/24H ->       000/00000       000/00000
    Loopbacks Inactive                                    Loopbacks Inactive
  HTU-C MARGIN (dB)       DSX-1                    DS1     HTU-R MARGIN (dB)
         CUR/MIN/MAX     ------------------------------           CUR/MIN/MAX
                          ESF     <-  Frame ->     ESF
    LP1   20/20/20        B8ZS    <-  Code  ->    B8ZS       LP1   20/20/20
    LP2   20/20/20        0-133   <-  LBO   ->    0 dB       LP2   20/20/20
                          N/A     <-  NIU   ->     YES
                          00000   <-  BPV   ->   00000
                          00000   <-  ES    ->   00000
                          00000   <-  SES   ->   00000
                          00000   <-  UAS   ->   00000
                          None    <- Alarms ->    None

 Enter Command : _     "Z"- zero regs, "X"- restart MIN/MAX, "?" - Help Screen