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Issue 5, February 2011

61213075L2-5E

Figure 14

 shows an active test pattern to the network. 

The error count display for the test pattern will count to 
and hold at 65535 errors. A loss of pattern sync will 
cause the count to increment to 65535. Reset the error 
count by selecting “Reset Pattern Errors”. If a test 
pattern is active to the network, then a pattern of 
unframed all “ones” is transmitted toward the customer.

The pattern that is sent can be selected using the Pattern 
Type option. Patterns available include 2^23-1, QRSS, 
Blue, Idle, and User Defined.

The following sequence is the factory default for the 
user defined pattern:

0000 0000 1111 1111

If a test pattern is active to the customer, then framed 
DS3 idle is transmitted toward the network. The 
Framing for Pattern option selects the framing for the 
test patterns for both the network and the customer, and 
it can be set to C-BIT, M13, or UNFR (unframed). The 
Timing Source for Pattern option selects whether the 
received network DS3 signal (NTWK) or the NIU3 PM 
local reference clock (LOCAL) will be used as the clock 
for the transmitted test pattern.

The timing source for the pattern is set to Network to 
preserve network timing. If a network signal is not 
present or if a loopback removes the timing reference 
from the network signal, local timing can be used for 
pattern testing.

Figure 14.  Loopback and Test Commands Screen, Pattern Active

CIRCUIT ID: xxxxxxx                                               03/01/04  13:04:03
                     Press ESC to return to previous menu

                          Loopback and Test Commands
             ______
Errs: 00000 | NIU3 |               1. Loopback Network
----------->|      |---------->    2. Loopback Customer
            |      |               3. Dual Loopback
            |      |
      NET   |      |  CUST         4. Send Pattern to Network
            |      |               5. Deactivate Pattern to Network
            |      |
 <--2^23-1--|      |<----------    6. Send Pattern to Customer
            |______|               7. Deactivate Pattern to Customer

                                   8. Pattern Type                     2^23-1
                                   9. Framing for Pattern              C-BIT
                                  10. Timing Source for Pattern        LOCAL
            Pattern                   
            Errors                11. Insert Bit Error
            -------               12. Reset Pattern Errors
Network      00000
Customer      N/A
                                  Selection:

Содержание DS3 NIU3 PM

Страница 1: ...nce History 18 Figure 19 Performance Thresholds Screen 19 Figure 20 Change Performance Threshold Screen 19 Figure 21 Performance History Data Definitions 1 20 Figure 22 Performance History Data Defini...

Страница 2: ...ntinuity to maintain data flow between the network and the customer A front panel LED on the NIU3 PM provides notification of failure Figure 2 illustrates a circuit diagram of the NIU3 PM in a SONET b...

Страница 3: ...ndicular movement The unit is secured with two front panel thumbscrews Jack Connections The three housings each have four rear panel BNC connectors for each NIU3 PM Two for Customer Receive Transmit T...

Страница 4: ...ormer is specifically intended for use with the standalone housing P N 1212070L1 For the AC DC transformer the red power wire is connected to the RET terminal and the black return wire to the PWR term...

Страница 5: ...LOS AIS Red Amber On On Off DS3 signal not present at network interface AIS present at network interface DS3 signal present at network interface NTWK C BIT Green Amber On Off On C Bit framing detecte...

Страница 6: ...itting RAI towards the network If there is no signal from the customer the CUST LOS AIS LED turns on red and the NIU3 PM will transmit the signal selected by the Customer LOS option on the Provisionin...

Страница 7: ...nd AIS RAI when LOF detected Enabled then RAI is transmitted to the Network Interface AIS detected on Network Interface Network Interface to Customer Interface AIS is transparently passed through to t...

Страница 8: ...ing in misplaced characters or screen time outs NOTE Not all option screens are shown in this document Many screen options selected will advance to additional screens with additional options Navigatio...

Страница 9: ...tect valid frame alignment in the DS3 signal QRSS Quasi Random Signal Source A modified 2 20 1 pseudorandom test signal that has artificial constraints to limit the maximum number of zeros in the bit...

Страница 10: ...nd checksums for the NIU3 PM Figure 7 Adtran NIU3 Main Menu Screen Figure 8 NIU3 Unit Information Screen CIRCUIT ID xxxxxxx 03 01 04 13 04 03 Adtran NIU3 Main Menu 1 NIU3 Unit Information 2 Provisioni...

Страница 11: ...equipment whose receiver is sensitive to signal levels in the upper range of T3 specifications In this case the Tx Level to Customer option may be set to Low to reduce the customer transmit signal le...

Страница 12: ...tatus Screen NETWORK T3 RECEIVER DATA CUSTOMER LIVE DS3 SIGNAL LOS ______ C BIT FRAMING UNFR NIU3 3 6 dBdsx LEVEL 2 9 NET CUST 15M 24H 30D 15M 24H 30D AIS LOS 000 00000 0000000 ES L 000 00000 0000000...

Страница 13: ...ors From the Troubleshooting Screen it is possible to make the following selections Receive Guidance in problem resolution Clear the Performance Monitoring information Clear the Alarm History View Per...

Страница 14: ...ly the following warnings will display immediately upon occurrence on the Network and Customer interface Receive Level Low or High Receive Frequency Lock Error The Receive Frequency Lock Error provide...

Страница 15: ...n the next screen Figure 13 shows an active network loopback Figure 13 Loopback and Test Commands Screen NTWK LBK Active CIRCUIT ID xxxxxxx 03 01 04 13 04 03 Press ESC to return to previous menu Loopb...

Страница 16: ...the customer and it can be set to C BIT M13 or UNFR unframed The Timing Source for Pattern option selects whether the received network DS3 signal NTWK or the NIU3 PM local reference clock LOCAL will b...

Страница 17: ...30 000 000 000 00000 6 30 Days Data 01 01 12 15 000 000 000 00000 7 Line Data 01 01 12 00 000 000 000 00000 8 Path Data 1 01 01 11 45 000 000 000 00000 9 Path Data 2 01 01 11 30 000 000 000 00000 10...

Страница 18: ...MSEC 00000 00000 00000 00000 0000000 3 15 Min Data 03 01 00000 00000 00000 0000000 4 60 Min Data 02 29 00000 00000 00000 0000000 5 24 Hr Data 02 28 00000 00000 00000 0000000 6 30 Day Data 02 27 00000...

Страница 19: ...ear end only The Path Related thresholds set the thresholds for the near and far path parameters for both network and customer All thresholds can be disabled or reset to factory default Figure 19 Perf...

Страница 20: ...SEF 1 or AIS 1 UAS P Unavailable Seconds 10 cont SES Ps CV P Code Violation Count Parity Error Count NOTE Reverse video indicates invalid data due to a terminal restart or power cycle a data register...

Страница 21: ...og choose R for Reset This reset must be confirmed by choosing Y on the next screen Possible events include the following Status changes Provisioning commands Loopback commands remote and manual Power...

Страница 22: ...or NIU3 local to the NIU3 PM To clear the alarm log choose R This reset must be confirmed by choosing Y on the next screen Possible alarms include the following Power events Alarm log reset FEAC alar...

Страница 23: ...NIU3 PM date and time Once date and time are configured the date and time performance registers update accordingly Figure 25 Set Circuit ID and Scratch Pad Figure 26 Set System Date and Time CIRCUIT I...

Страница 24: ...UPDATE 03 01 04 02 04 03 Press ESC to return to previous menu TERMINAL MODES MENU MANUAL UPDATE MODE You can print or log screens No text is highlighted Ctrl R TO UPDATE appears at the top of each scr...

Страница 25: ...d press ENTER 5 From the Software Download menu to begin YModem download select option 1 press ENTER 6 A screen appears stating that the NIU3 PM is waiting for download and the character C appears acr...

Страница 26: ...ork direction The remaining codes send the associated test pattern in both network and customer directions simultaneously To deactivate a loopback or test pattern send 1110110 and the NIU will respond...

Страница 27: ...ector Ntwk LOS Indication Ntwk AIS Indication Ntwk C Bit M13 Indication Regen Cust Out Cust In Network Loopback Regen Ntwk Out Ntwk In Customer Monitor Network To Network Monitor Customer To RCV Frami...

Страница 28: ...m the following steps 1 Insert a jumper strap on the posts immediately adjacent to the suspect relay This provides a signal path bypassing the relay 2 Using an appropriately sized IC extractor tool li...

Страница 29: ...es T400 density NIU3 PM circuit board 8 ounces Standalone housing 2 pounds 3 slot shelf 4 pounds 12 slot shelf 12 pounds Environmental Operating Temperature Storage Temperature Relative Humidity 40 C...

Страница 30: ...30 Issue 5 February 2011 61213075L2 5E...

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