Tempo Communications DataScout 10G Users Guide

INSTRUCTION MANUAL

DataScout™ 10G

Read and understand all of the instructions and safety information in this manual before operating or servicing this tool.

Table of Contents

Preface 7-8

Safety Information — Overview ................................................................................................. 7

Eye Protection ...................................................................................................................... 7

Laser Safety ......................................................................................................................... 7

Battery Safety ....................................................................................................................... 7

Getting Started ........................................................................................................................ 8

Battery Information ............................................................................................................... 8

Calibration ........................................................................................................................... 8

Warranty .............................................................................................................................. 8

Section 1. Buttons & Icons 9

User Interface — Power on/off .................................................................................................. 9

Touch screen ........................................................................................................................ 9

Unlocking the screen ............................................................................................................ 9

User Settings ........................................................................................................................ 9

Navigation Buttons ............................................................................................................... 9

Battery & Charge Indicators ................................................................................................... 9

Section 2. Interfaces 10-11

Test Interfaces ...................................................................................................................... 10

Charge, Wi-Fi & Remote Management Interfaces ...................................................................... 10

LCD Display ........................................................................................................................... 11

Portrait & Landscape Modes ............................................................................................... 11

Proper Care ........................................................................................................................ 11

LCD settings ....................................................................................................................... 11

Results (Test/Capture) Retrieval ............................................................................................. 11

Section 3. Ethernet Testing 12-20

Overview ............................................................................................................................... 12

Test Interfaces ...................................................................................................................... 12

Link Active LED’s ................................................................................................................ 12

Port Conguration .................................................................................................................. 13

Port A & B Selection ............................................................................................................ 13

Copper, Fiber & Speed Selection .......................................................................................... 13

Optical Power & Laser On/Off .............................................................................................. 13

Auto-Negotiate ................................................................................................................... 13

Full and Half Duplex ............................................................................................................ 14

Flow Control ....................................................................................................................... 14

Destination MAC address .................................................................................................... 14

Quick Test ............................................................................................................................. 14

View Quick Test Results ...................................................................................................... 15

Results displayed ............................................................................................................ 15

Viewing Multiple Quick Test Results .................................................................................... 16

RFC-2544 Testing ................................................................................................................... 16

Throughput Test ................................................................................................................. 16

Frame Loss ........................................................................................................................ 17

Latency .............................................................................................................................. 17

Jitter .................................................................................................................................. 17

Back-to-Back ...................................................................................................................... 17

Starting a RFC-2544 Test..................................................................................................... 17

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DataScout™ 10G

RFC-2544 Test Results ........................................................................................................... 18

PDF View ........................................................................................................................... 19

Port B Conguration ............................................................................................................... 19

Through Mode .................................................................................................................... 19

Conguration...................................................................................................................... 19

Ping and Trace Route Test ...................................................................................................... 20

Section 4. DS1 Testing 21-26

DS1 Conguration .................................................................................................................. 21

DS1 Auto Conguration ....................................................................................................... 21

DS1 Mode Selection............................................................................................................ 21

Clock Settings .................................................................................................................... 22

DS1 Framing Selection ........................................................................................................ 22

Framing Status Indicators ................................................................................................... 22

Line Code Selection ............................................................................................................... 22

Reception of Valid B8ZS Code Words ................................................................................... 22

Excessive Jitter monitor ...................................................................................................... 23

Loopback .............................................................................................................................. 23

PairGain HDSL .................................................................................................................... 23

Adtran HDSL....................................................................................................................... 23

Smart Repeaters ................................................................................................................. 23

In-band & FDL ..................................................................................................................... 23

User & Self-loop .................................................................................................................. 23

Loopback Commands ............................................................................................................ 24

NIU5 Smart Jack — Loop Up ................................................................................................ 24

Loop Down ......................................................................................................................... 24

BERT (Bit Error Rate Test) ....................................................................................................... 24

Test Pattern Selection ......................................................................................................... 24

Stopping a BERT ................................................................................................................. 24

BERT results ....................................................................................................................... 24

Send Errors ........................................................................................................................ 25

Clear Errors & Elapsed-Time ................................................................................................ 25

Alarms & Events ................................................................................................................. 25

Frequency, Level and Slips .................................................................................................. 26

DS1-B Test Interface .............................................................................................................. 26

Section 5. DS3 Testing 27-30

Test Interface Connections ..................................................................................................... 27

DS3 Main Menu ..................................................................................................................... 27

Conguration ......................................................................................................................... 28

Mode Selection .................................................................................................................. 28

Clocking ............................................................................................................................. 28

Framing Selection ............................................................................................................... 28

DS3 Receive Framing .......................................................................................................... 28

DS3 Line Code .................................................................................................................... 28

Loopback .............................................................................................................................. 28

Local Loopbacks ................................................................................................................ 28

Transmit FEAC Codes ......................................................................................................... 29

BERT (Bit Error Rate Test) ....................................................................................................... 29

BERT Default ...................................................................................................................... 29

BERT Results ...................................................................................................................... 29

Error Injection ........................................................................................................................ 29

Clear Errors & Elapsed-Time ................................................................................................ 29

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Alarms & Events ..................................................................................................................... 30

Alarms & Events Current ..................................................................................................... 30

Alarms & Events History ...................................................................................................... 30

DS3 Signal: Frequency & Level ................................................................................................ 30

Section 6. Signaling 31-40

Signaling-TIMS Interfaces ...................................................................................................... 31

Impedance Selection .......................................................................................................... 31

Signaling Mode Selection .................................................................................................... 31

Station LS ....................................................................................................................... 32

Station GS ....................................................................................................................... 32

Station DID ..................................................................................................................... 32

Station DID WINK ............................................................................................................ 32

CO LS ............................................................................................................................. 32

CO GS ............................................................................................................................. 32

CO (Signaling) E&M I-V .................................................................................................... 32

CO DID IMMEDIATE ......................................................................................................... 32

CO DID WINK ................................................................................................................... 32

SELECTIVE SIGNALING (SS1/SS4) 2&3 Digit ..................................................................... 33

Return Loss (RL) — Tx Complex Tones ................................................................................. 33

Measurements ....................................................................................................................... 33

Voltage & Current ............................................................................................................... 33

RX Frequency & Level .......................................................................................................... 33

TX Frequency & Level .......................................................................................................... 33

Noise ................................................................................................................................. 33

Capturing DRMF/DP & MF Digits and Timing ........................................................................ 34

Ringing & Dial Tone ............................................................................................................. 34

Dialing ............................................................................................................................... 34

Quick Tones ....................................................................................................................... 34

Quiet Termination ............................................................................................................... 34

Sweep ................................................................................................................................ 34

Tone 1-4 Buttons ................................................................................................................ 34

Speaker Adjust ................................................................................................................... 34

4-Wire TIMS ........................................................................................................................... 34

Terminations ...................................................................................................................... 35

4-Wire TIMS Wideband ........................................................................................................ 35

Measurements ................................................................................................................... 35

Transmit & Receive .......................................................................................................... 35

Sweep Button .................................................................................................................. 35

Quick Tones .................................................................................................................... 36

Quiet Termination ............................................................................................................ 36

Level Zero Button ............................................................................................................ 36

Tone 1-4 Buttons ............................................................................................................. 36

Speaker Adjust ................................................................................................................ 36

4-Wire Noise Measurements ................................................................................................... 36

Impulse Noise .................................................................................................................... 36

Dropouts, Gain & Phase Hits Amplitude Jitter & Phase Jitter ................................................. 37

Amplitude & Phase Jitter .................................................................................................... 38

Return Loss (RL) — Tx Complex Tones ................................................................................. 38

23-Tone Test ...................................................................................................................... 38

23-Tone Results Display ................................................................................................... 38

4-Wire Signaling Mode Selection ......................................................................................... 39

Station DID ..................................................................................................................... 39

Station DID-wink .............................................................................................................. 39

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DataScout™ 10G

CO (Signaling) ................................................................................................................. 39

PBX (TRUNK) E&M I-V ...................................................................................................... 39

CO DID ............................................................................................................................ 39

CO DID-Wink ................................................................................................................... 39

SELECTIVE SIGNALING (SS1, SS4) 2&3 Digit ..................................................................... 40

Transmit SS digits .............................................................................................................. 40

Receive SS digits ................................................................................................................ 40

Menu Functions ..................................................................................................................... 40

Section 7. PRI ISDN 41-45

Inital Layer-1 Test .................................................................................................................. 41

PRI Conguration ................................................................................................................... 41

Emulation Mode ................................................................................................................. 42

PRI “Link Active” Layer’s 1 & 2 ............................................................................................. 42

Placing a VOICE or Audio Call ............................................................................................. 42

Hang Up ............................................................................................................................. 43

Placing a Data Call ............................................................................................................. 43

Bert ................................................................................................................................ 44

Receiving a Call ............................................................................................................... 44

Terminate Call ................................................................................................................. 44

Multiple B-Channel Calls ..................................................................................................... 44

Q.931 Decodes & Status Window ......................................................................................... 44

Protocol Decode Messages ............................................................................................. 44

Clear CALL Status & BERT ................................................................................................... 44

List of Common Problems ...................................................................................................... 45

Section 8. DDS and DataCom 46-50

DDS 4-Wire Connections ......................................................................................................... 46

DDS 4-Wire Conguration ....................................................................................................... 46

Receive Loopbacks ................................................................................................................ 46

CSU Loopback .................................................................................................................... 47

DSU Loopback .................................................................................................................... 47

V.54 Loopback .................................................................................................................... 47

Local Loopbacks.................................................................................................................... 47

TX Control Codes ................................................................................................................... 47

RX Level and Sealing Current Detection ................................................................................... 47

BERT - Bit Error Rate Test and Display ..................................................................................... 48

Bit Error Insertion ............................................................................................................... 48

CLEAR Errors ...................................................................................................................... 48

Receive Byte and Control Code Decode ................................................................................ 48

DataCom Testing — DataCom Testing (Option) ........................................................................ 49

DTE BERT Testing ............................................................................................................... 49

BERT SYNC ......................................................................................................................... 49

DCE BERT ........................................................................................................................... 49

Byte Encoder Display .......................................................................................................... 49

Auto Mode ......................................................................................................................... 49

Other Features — Up/Down buttons ......................................................................................... 50

Invert button....................................................................................................................... 50

Bi-Directional loopback button ............................................................................................ 50

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Section 9. RITS 51

Rapid Intelligent Timing System .............................................................................................. 51

Test Interface .......................................................................................................................... 3

Composite Clock and T1 Selection ........................................................................................ 3

CC Bridge and TERM Mode.................................................................................................... 3

CC Tip to Ring/Tip to Ref Selection ........................................................................................ 3

Testing Single and Multi-Channel CC Circuits ............................................................................3

Test Interval ......................................................................................................................... 3

CC Amplitude Measurements ................................................................................................ 3

T1 (DS1) Timing Testing & TSG Threshold ................................................................................. 3

TSG Threshold ...................................................................................................................... 3

T1 Single Test ...................................................................................................................... 3

T1 Multi-Channel ...................................................................................................................... 3

Set Test Time Interval ........................................................................................................... 3

ID Tone .................................................................................................................................... 3

DVM Mode............................................................................................................................... 3

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DataScout™ 10G

Preface — Safety Information

Overview

Hazards exist in every workplace in many different forms: sharp edges, falling objects, ying sparks, chemicals, noise and a myriad of other potentially dangerous situations. Controlling hazards at their source is the best way to protect you from accidents. While the test set is designed to be a safe and reliable tool, the environment in which you perform work in may expose you to hazards.

Wear eye protection when using this tool. Failure to observe this precaution may result in injury.

Never look into laser transceivers (SFP/SFP+). Failure to observe this precaution may result in eye damage.

Optical small form-factor pluggable (SFP/SFP+) transceivers use laser radiation to generate communication signals. Always keep

the optical transmit and receive ports covered whenever the optical patch cord is not plugged in.

Failure to observe these precautions may result in injury or property damage.

Do not allow anything to contact the battery terminals.

• Do not immerse batteries in liquid. Liquid may create a short circuit and damage the battery. If batteries are immersed, contact your service center for proper han-dling.

• Do not place the battery into a pocket, tool pouch, or tool box with conductive ob-jects. Conductive objects may create a short circuit and damage the battery.

• Do not place a battery on moist ground or grass. Moisture may create a short cir-cuit and damage the battery.

• Do not store the battery at more than 122 °F (50 °C) or less than –4 °F (–20 °C). Damage to the battery can result.

• Do not use another manufacturer’s charger. Other manufacturers’ chargers may overcharge and damage the battery.

• Do not attempt to open the battery. It contains no user-serviceable parts.

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Getting Started

Battery Information

The test set can be powered from its internal rechargeable battery pack or from the provided universal 100-240VAC wall mount charger. Battery life will depend on the active test interface selection but on average a single test interface supports approximately 6-8 hours of continuous operation. Multiple test interface selections will de-crease the battery life by approx. 30% per interface. The 10G interface consumes the most power and thus you should expect typically around 2-3 hours of testing on batter-

ies when using this interface.

Before using the test set for the rst time you will need to charge the battery for approx-imately 8 hours to achieve a full charge. A yellow graphic battery charge icon located to the left of the 7” LCD indicates that the batteries are charging. This indicator is

independent of the power state (On/Off) of the test set. The ON/OFF power button is lo-cated on the lower right of the top panel.

Cal

ibration

The test set uses state-of-the-art components with high precision making regular calibration unnecessary. No calibration required.

Warranty

The test set is warranted for a period of at least one year from the date of shipment against defects in material and workmanship. This warranty applies to the original equipment purchaser and is non-transferable without express written authorization. Warranty is void if:

1. The warranty sticker has been tampered with or removed - indicating unauthorized access

2. The equipment has been altered

3. The equipment has not been serviced by a Tempo Communications authorized service and repair center

4. The equipment is installed or operated in any manner other than those specically described in the instructions and operating literature.

No other warranty is expressed or implied.

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DataScout™ 10G

Section 1. Buttons & Icons

User Interface

Power on/off

To power ON the test set, press and hold the power button for two seconds or until the green power indicator lights. The DataScout takes less than 25 seconds to fully power up. To Power OFF press and hold the power button for four seconds or until the green power indicator turns off. Note that the yellow charge Icon may or may not be lit de-pending on the state of the battery and if the AC charger is plugged into the unit.

Touch Screen

Unlike your smart phone, you must press or slide your nger in a deliberate medium force action when interacting with the touch screen. If you slide or press lightly like you would a smart phone the unit may not respond. This is a test set and a deliberate press is required. Additionally, advanced touch screen features such as pinch, ick and zoom are currently not supported.

Unlocking the screen

Slide the unlock button from bottom to top to unlock the unit. You are now at the home screen. Press a test Icon for the particular tests you would like to perform or use your nger and slide from left to right or right to left to view additional screens.

User Settings

To adjust various user settings such as LCD brightness or data and time press the all applications menu icon located middle right of LCD followed by the settings icon. Alternately you can also from the home screen press the menu button followed by

settings.

Using your nger or a stylus scroll down to the Setting you wish to change then press the setting. The only settings recommend for changing is the Display and Date & Time located at the bottom of the menu.

Navigation Buttons

From left to right the navigations buttons are BACK, HOME, MENU, and POWER.

BACK will take you to the previous screen. Press and hold to view recently accessed apps.

HOME quickly returns you to the home screen from whatever application or screen you are in. This is the screen with the test

applications. Press and hold to view re-cent accessed apps.

MENU when on the home screen displays a menu for changing wallpaper, search, and other settings. Within a test application pressing the menu button enables and disables test options. Additionally pressing and holding the menu button in a test appli-cation displays the keyboard. Press and hold the menu button to close the keyboard.

POWER turns on/off the test set. Press and hold two seconds to turn on or press and hold for four seconds to turn off.

Battery & Charge Indicators

To the left of the LCD are two battery indicators. A red battery with an X, when lit, indicates the battery charge status is low. If this oc-curs the test set should be immediately

plugged into power to continue testing.

A yellow battery with a lightning bolt, when lit, indicates the batteries are charging. This indicator may be on when charger is plugged in as well. A full charge cycle will take approximately eight hours to complete when the batteries are fully discharged.

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Section 2. Interfaces

Test Interfaces

The test set uses a plug & stay architecture which eliminates removing, damaging or losing modules like you would with other test sets. Plug & stay also enables testing multiple services at the same time without powering off the device to change modules. You can’t do that with many modular test systems. All test interfaces are located on the right side of the unit as shown in the graphic be-low. Please note that depending on your conguration you may not have all of the ports installed on your unit.

• Ethernet (10/100) Copper

• Fast Ethernet (100) Fiber SFP

• Dual Gigabit Ethernet (1000) Copper

• Dual Gigabit Ethernet (1000) Fiber

• Dual 10 Gigabit Ethernet Fiber

• DS3 Test Interface

• DS1/FT1/E1 Test Interface / Second fully independent DS1/E1 Test Interface

• DS0 Channel: VF Measurement & Signaling emulation

• PRI-ISDN NT & TE Voice & Data Testing

• Datacom Testing SYNC/ASYNC DTE/DCE RS232,V.35, RS449, RS530

• 2-Wire Signaling TIMS–CO, PBX, DID, E&M type I-V, Selective, Wink, Loop/Ground Start

• 4-Wire Voice-band TIMS

• 4-Wire Wide-band XDSL TIMS

• 4-Wire DDS & Frame Relay DLCI Decode

• Automated Timing Signal Generator (TSG) & Timing Analysis

Charge, Wi-Fi & Remote Management Interfaces

1. Charger input is located in the upper left corner and is labeled 9V. Only use the approved Tempo Communications supplied charger as other models may dam-age the internal power supply and will void the warranty.

2. RJ45 Ethernet port enables full remote control of the test set when the DS10-SW-RC option is enabled.

3. OTG (On-the-Go) Micro-AB USB port is to connect to your PC in order to perform application updates or copy/delete documents and save test results.

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DataScout™ 10G

4. Two USB type-A ports are used to connect a variety of USB accessories such as ash drives, monitor or keyboards/mice. These ports can also be congured to op-erate as a RS232 serial port. In this mode the bottom USB RS232 electrical ports can be used as remote control ports for T1/DDS/Timing. Refer to remote control procedure section to properly install remote

control software on your PC.

LCD Display

The test set is equipped with a bright 7” color tablet LCD enabling test results, web pages, documents and oce applications to be

easily viewed, even in bright sunlight.

Portrait & Landscape Modes

The unit defaults to landscape display orientation upon power on. To change to portrait mode simply tap the portrait button in the upper right of the test screens to display the screen in portrait mode. This button will change to say landscape when in portrait mode.

Proper Care

Always use clean ngers or a touch screen stylus when interacting with the touch screen. Never use hare objects such as screw drivers, knives, pen tips or other hard objects. To clean the LCD use a lightly damp soft cloth. Never use Acetone, ethyl alcohol or ammonia to clean your screen. Failure to follow any of the above could result in permanent damage to the LCD and void the

warranty.

LCD settings

To change the LCD display settings press the icon, then settings, select Display and then select Brightness. Slide the bar left or right to increase or decrease brightness. To change how long the screen should remain lit before dimming to save power select Screen Timeout.

Results (Test/Capture) Retrieval

The test set has 4GB of internal storage and can store thousands of phone numbers (TIMS) and contacts (via the built-in contacts app in ) along with thousands of test results and set up information – by test type. To Log (Capture errors) you must be in the DS1 or DS3 app; the unit has the ability to store thousands of events in internal memory. Tap the menu button and then “Log Results”. Select the Alarm, Event, Slips or BERT error then hit OK. Note the log will capture any alarm or event and place in a DS1 or DS3 folder with a date and time stamp. Note to prevent streaming errors from creating a large number of les the unit will stop logging at greater than 45% error rate. To copy time-stamped test results from internal memory to your PC simply power on the test set and connect a USB OTG (On-theGo) cable to your PC USB port. Press the Menu button on the test set and select Notications followed by USB connected. Tap on the “Turn on USB storage”. Your PC will now treat the test set as a removable storage device (like a USB stick) and you can copy, paste, add and delete test results (les) to/from the unit. From here you can easily add to your database, print or backup your test

results.

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Section 3. Ethernet Testing

Overview

Service providers are actively turning up enterprise and carrier Ethernet technology as the need for more and even more bandwidth

and quality of service is desired. The need for bandwidth and quality services has never been more important, making comprehensive Ethernet testing immediately at service turn-up vital to ensuring service quality and increasing customer satisfaction. Customer Service-Level Agreements (SLAs) dictate certain performance criteria that must be met, with the majority documenting network availability and mean-time-to-repair values which are easily veried. Today, Ethernet performance criteria are more dicult to prove, and demonstrating performance availability, transmission loss, bursts, latency and delay, link and service integrity cannot be accomplished accurately by a PING or a volt meter. With the DS10G-HW-ETH Ethernet test interface option installed eld technicians, in-stallers and contractors to immediately capture test results, run RFC-2544 tests and demonstrate that the Ethernet service meets the customer SLA.

Test Interfaces

The test set has the ability to test:

1. Dual port 10000Base-X SFP+ (10GbE)

2. Dual port 1000Base-X SFP (1GbE)

3. Dual port 10/100/1000Base-T

Currently only 10GbE port A is active.

Link Active LED’s

Above each of the interface ports are Link active (ACTV) LED’s. These green LED’s are lit when that port sees a valid Ethernet link on the Rx of the selected port. Link sta-tus can also be found on the LCD display, when green there is valid LINK.

Along with LINK status the DataScout 10G highlights in bright white if there is Copper or Fiber signal detected and when there is a valid Fiber signal it displays the RX power in dB. Regardless of the selection of Copper or Fiber interface the Copper/Fiber signal will illuminate if signal is detected but the Copper/Fiber button indicates which port (Copper or Fiber) the DataScout 10G will RX and TX to/from.

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DataScout™ 10G

Port Conguration

Port A & B Selection

The grey buttons at the top from left to right they will quickly tell you how the unit is congured, e.g. from power up the pull-down menus reads and is congured for: Port A, Copper, 100Mbs, Auto-Negotiation on (green), Full Duplex, and Flow Control on. Both Port-A and Port-B (looped) are congured the same on power up BUT can be congured independently. To congure Port-B simply tap on the Port-A button and select Port-B.

Copper, Fiber & Speed Selection

The test set default setting is Copper 100M for Port A & B. Copper speeds of 10/100/1000 uses the RJ45 jacks A & B. The Copper RJ45’s support MDI (straight through) & Auto MDI-X (crossed) pin-out with Cat 5, 5E, 6 cable. To select Fiber 1G or 10G, tap on the Copper 100M button and select Fiber 1G or Fiber 10G. The display will look like the screen below:

To test 1Gbps or 10Gbps Fiber you must use the appropriate SFP (1G) or SFP+ (10G), wave length and speed device. Once speed is selected, insert the SFP with gold ngers up, into the Fiber Port-A or Port-B. Make sure you hear or feel a click to insure the SFP is securely inserted into the SFP cage. Also pay attention that you insert into the appropriate A or B slot for 1Gbps or 10Gbps port. Connect the Fiber LC connectors to the SFP noting IN is the test sets receive and OUT is the test sets transmit. Once connected you will note the Fiber RX power level is displayed in dB and LINK ACTIVE should be green.

Optical Power & Laser On/Off

To read the speed, wave length, MFG, of the SFP or SFP(+) simply insert into Port A or B (gold ngers facing up) and press the Menu key and tap on the SFP-A or SFP-B. Here you will nd a wealth of information on the SFP including speed, power and model number. Use your nger (bottom to top screen swipe) to scroll to get more in-formation. On power up the Tx Laser for A & B is ON, to turn off the Tx laser press the Menu key and tap on SFP-A or SFP-B and press the Set SFP-A or B laser-Off button.

Auto-Negotiate

Auto-Negotiate enable two interfaces to determine common transmission parameters, such as speed, duplex mode, and ow control. In this process, the connected devices rst advertise their capabilities regarding these parameters and then choose

the high-est performance transmission mode they both support, e.g. device #1 supports and advertises (shares) 10/100/1000,

Auto-Negotiate, Full Duplex and device #2 advertis-es10/100, Auto-Negotiate, Full Duplex so the highest common parameter is 100M (de-vice #2), Auto-Negotiate, Full Duplex Auto-Negotiate default is ON and is highlighted in green. To turn off Auto-Negotiate simply tap the Auto-Negotiate button and note the green bar in Auto-Negotiate button turns off.

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Full and Half Duplex

In a half duplex (HDX) transmission, a data packet is sent by one system and received by the other. Another data packet cannot be sent until the receiving system sends an acknowledgement back to the sender. In a full duplex (FDX) transmission, both the sending and receiving systems communicate with each other simultaneously; both devices can send and receive data at the same time. This means a device can be receiving a data packet while acknowledging the receipt of another. 10/100M supports both HDX and FDX, 1Gbps supports FDX only.

Flow Control

Flow control is used for temporarily stopping the transmission of data within an Ethernet network. If Flow control is on and the transmission elements FIFO buffers are close to overow the network element can send a pause frame, which halts the transmission of the sender for a specied period of time. Note that devices at each end must be congured for Flow control on. Please note that Flow control is NOT supported in Half Duplex (HDX) mode. The default setting is Flow Control ON; to turn off Flow Control tap the Flow Control button and note the green bar extinguish.

Destination MAC address

The destination MAC address window is located under the conguration buttons. To enter the destination MAC address tap on the MAC address and a key board will pop up. Use the delete key to remove old destination MAC address and enter 12 alpha numeric characters destination MAC address. The MAC address requires 12 characters with no dashes, e.g. 5044332211EE . There are two buttons to the right of the dest Mac Address labeled Set to Port-A & B. Use these buttons to quickly enter the A or B MAC address of the test set into the destination MAC address. Select Set to Port-A if looped on self or Set to Port-B if communicating or connected to the B-Port.

Quick Test

The Quick test is a “quick” way to send packets at a selected frame size, duration, and load. Also used for a switch to “learn” its MAC address or to quickly check that packets are being received.

The quick test is typically used in a Loopback or end-to-end test.

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DataScout™ 10G

Select test mode by pressing the Menu key and select Looped (default) or End-to-End test. To run a quick test rst select a Fixed Frame Size (green bar) shown above or Random (tap Fixed to toggle to Random). Random frame size will send “random” frames from 64 through 1518 for the duration of the test. For xed frame size enter the frame size by taping on the frame size window. A key board will pop up, use the delete key to remove the default frame size (1518) and enter the desired frame size of 64, 128, 256, 512, 768, 1024, 1280 or 1518 then press done after entering frame size. Tap on the Duration window to enter the length of the test in SECONDS. Next enter the Load in FPS % (1-100%). FPS is Frames/Second. Press the Start test button to initiate your test. Note a progress wheel will be active until the test is complete along with a display that will count down until completion of the quick test and a percentage of test completed will increase until it reaches 100%. You may need to run quick test once when rst connected to a HUB or SWITCH so the device can LEARN its MAC address. Also note the ET (Elapsed Time) in the upper right will restart at zero and count up until it reaches your desired duration then stop

counting.

View Quick Test Results

Once the quick test is completed results will be displayed. You can swipe your nger on the display from bottom to top to scroll to see all statistics and results for the selected test. You can run multiple quick tests and view results with the most recent being displayed rst (1of 5 for example).

Results displayed:

• Test Duration – in seconds

• Latency – Round-trip Delay in uSec

• Jitter – The variance of Latency, you MUST run 2 tests to get a Latency vari-ance measurement.

• Frames Sent –How many Frames transmitted

• Frames Received- Number of Frames the DataScout™ 10G MAC received

• Valid – Number of Valid Frames received

• Errored- Number of Errored Frames detected

• Tx Frame Rate- The transmit frame rate in FPS (Frame/Sec)%

• Rx Frame Rate- The receive frame rate in FPS %

• Total Bytes Received- Number of total bytes received, frame size in bytes/packet

• Frame Throughput- Packet data throughput in Mbps, packets less overhead

• Total Throughput – Frame throughput + overhead in Mbps

Port Statistics displayed: (swipe nger bottom to top to scroll)

• Frames Transmitted OK – Number of Frames that are successfully transmitted without error

• Frames Received OK – Number of Frames received that are successfully with-out error

• Frame Check Sequence Errors-Number of errors with CRC error

• Alignment Errors – Number of receive frames with alignment errors

• Octets Transmitted OK – Number of data and padding octets successfully transmitted

• Octets Received OK – Number of data and padding octets successfully re-ceived

• Tx Pause Control Frames – Number of Pause Frames transmitted (Flow Con-trol)

• Rx Pause Control Frames – Number of Pause Frames received (Flow Control)

• Frames with Rx Errors - Number of Frames with receive errors

• Frames with Tx Errors – Number of Frames with transmit errors

• Unicast Packets Rcvd – Number of one to one packets received

• Multicast Packets Rcvd – Number of Multicast (more than one sender) packets received

• Broadcast Packets Rcvd –Number of packets received that were broadcasted

• Unicast Packets Sent– Number of one to one packets transmitted

• Multicast Packets Sent – Number of Multicast transmitted

• Broadcast Packets Sent – Number of packets sent that were broadcasted to multiple receivers

• Ethernet Frames Dropped-Number of frames dropped due to DataScout™ 10G MAC error or FIFO overow

• Number of Frames received:

• Undersized- Number of Frames received with length less than 64 bytes

• Oversized –Frames received that are longer than the frame size entered

• 64-1519 – Number of Frames relieved within these frame sizes

• Jabbers – To long of frames with CRC errors

• Fragments – To short of frames with CRC errors

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Viewing Multiple Quick Test Results

To view multiple tests in the Results screen use the Next or Previous button to select test number i.e. 1 of 5, 2 of 5, the most recent test will be #1. Press OK to exit Results display.

RFC-2544 Testing

RFC-2544 is a benchmark test that species certain test criteria that allow both service providers and end users to check if the circuit meets the service level agreement (SLA). The RFC-2544 methodology outlines the tests required to measure and prove performance criteria for carrier Ethernet networks. This standard provides an out-of-service benchmarking evaluation of the performance of network devices using throughput, back-to-back (burst), frame loss and latency (or one-way delay) tests. Each test validates a specic part of an SLA.

Throughput Test

Throughput determines the maximum number of frames per second that can be trans-mitted without any dropped frames. In any given Ethernet system the absolute maxi-mum throughput will depend on the frame size. The tables below list the max data rates for a given speed and frame size.

10 Mbps System

Frame Size Data Throughput Preamble & IGP Frames/sec

64 bytes 7.62 Mbps 2.38 Mbps 14,880

128 bytes 8.65 Mbps 1.35 Mbps 8,445

256 bytes 9.27 Mbps 0.72 Mbps 4,528

512 bytes 9.62 Mbps 0.38 Mbps 2,349

1024 bytes 9.81 Mbps 0.19 Mbps 1,197

1280 bytes 9.84 Mbps 0.15 Mbps 961

1518 bytes 9.87 Mbps 0.13 Mbps 812

1522 bytes (VLAN) 9.87 Mbps 0.13 Mbps 810

100 Mbps System

Frame Size Data Throughput Preamble & IGP Frames/sec

64 bytes 76.19 Mbps 23.81 Mbps 148,809

128 bytes 86.49 Mbps 13.51 Mbps 85,459

256 bytes 92.75 Mbps 7.25 Mbps 45,289

512 bytes 96.24 Mbps 3.76 Mbps 23,496

1024 bytes 98.08 Mbps 1.92 Mbps 11,973

1280 bytes 98.46 Mbps 1.54 Mbps 9,615

1518 bytes 98.69 Mbps 1.30 Mbps 8,127

1522 bytes (VLAN) 98.70 Mbps 1.30 Mbps 8,106

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1000 Mbps (1Gbps) System

Frame Size Data Throughput Preamble & IGP Frames/sec

64 bytes 761.90 Mbps 238.10 Mbps 1,488,095

128 bytes 864.86 Mbps 135.14 Mbps 844,594

256 bytes 927.54 Mbps 72.46 Mbps 452,898

512 bytes 962.40 Mbps 37.59 Mbps 234,962

1024 bytes 980.84 Mbps 19.16 Mbps 119,731

1280 bytes 984.61 Mbps 15.38 Mbps 96,153

1518 bytes 986.99 Mbps 13.00 Mbps 81,274

1522 bytes (VLAN) 987.02 Mbps 12.97 Mbps 81,063

Frame Loss

Frame loss is simply the rate or number of frames lost through the range of data rates and frame sizes. Lost Frames are those

which were successfully transmitted but were never received.

Latency

Also known as Frame Delay (FD), the Latency test or one-way delay measures the time required for a frame to travel from the originating device through the network to the destination device. The measurement is performed at the Throughput rate (above). In order to measure latency a test frame containing a time stamp is transmitted through the network. The time stamp is then checked when the frame is received to determine the delay. This test is most commonly performed with a loopback at the terminating

location (round-trip delay).

Jitter

Also known as Frame Delay Variation (FDV), jitter is the variance of Minimum and Maximum inter-packet arrival time and is displayed in nanoseconds (ns). You must run two tests at same frame size to measure Jitter and should be done at the maximum frame rate as this is where the most variation (packet delay) will occur.

Back-to-Back

Also know as Burst testing, the back-to-back test measures the longest frame burst that the circuit or device under test (DUT) can handle without any Frame loss. The test set sends burst of frames with minimum inter-frame gaps to the DUT and counts the number of frames forwarded by the DUT. For optimum measurement the trial length should be at least two seconds long and the measurement repeated at least 50 times with the average of the results reported for each frame size.

Starting a RFC-2544 Test

To Start an RFC-2544 test, rst press the menu key and select a test mode Looped (default) or End-to-End test. Do not have USB storage turned ON (default is off) as your PC and test set will collide when trying to save PDFs. Looped test is testing to/from a device in loopback. End-to-End is testing to another test set. Next tap on the check mark to select the type of tests you which to run (Throughput/Frame loss, Laten-cy, and Back-to-Back).

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Tap on the Frame Size(s) button for each test checked and select the frame sizes you which to test. See Frame selection screen

below.

Remember: you must select frame sizes for EACH test (Throughput/Frame Loss, Latency, and Back-to-Back) selected. Use your nger to swipe bottom to top on display for more frame sizes. Next use the pull-down to select the number of trials or number of times you want to run the selected test. The default is 1 time. Throughput & Frame loss currently supports only 1 test iteration. Tap on the Duration window and enter the time in SECONDS as to

how long you want to run each trial.

Finally select the Test Load in FPS (Frames/Second). The defaults are Max 100% Min 40%, and Step 10%. Setting the Max % is where the test set will start its packet analysis and if 100% is OK it will move to next test. If errors occur it will decrease the FPS by the Step count (10% Default) and run the test again. In the conguration above it would go to 90%. The test set will decrease until there are no FPS errors or until it hits the Min Test Load (40% default). The DataScout™ 10G will run the Min FPS and will stop and

display errors.

Once the desired tests are congured, enter a Te s t I D by tapping on Test ID window. This will be a le name with Date/Time stamp of the test and will be stored as a PDF in the tablet. See below to view.

Press the Start Test button and you will see a progress wheel with percent complete and the number of test steps to complete the

test, along with what step number the test set is currently testing. You can also see the frame size displayed in red status window and under frame size in quick test. Note: most service providers test only to the extremes; i.e. the 64 and 1518 byte frames and may limit the test to throughput and latency as RFC-2544 test runs can span from several minutes to 4.5 hours.

RFC-2544 Test Results

When the RFC-2544 test is complete results are displayed or you can press the View Results button. Use the NEXT and PREV buttons to view the step number of the particular selected tests. You can also view the results in graph form by selecting the View Graph button. Note: you must have 2 or more frame sizes selected to view in graph form. If there is just one frame size than under Results button look at Frame Throughput. The graph displays a theoretical Max throughput in green for each frame size selected and the measured throughput in red for each frame size.

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DataScout™ 10G

PDF View

You can view the Test ID Results in PDF on the test set by pressing the HOME key and select Adobe or Oce Suite application. Go to the Ethernet Test Results folder and nd your le and tap on it. You can also connect a cable USB (PC) to Mini USB from a PC to Tablet, press the menu key followed by Notications then USB connected. Select Turn on USB storage button and note Android turns red. Your PC will treat the test set like a removable disk and you will be able to explore, view, copy, print, delete, and

add any document to the test set.

Never delete non-test result les or Android folders.

The test set stores ~2000 Ethernet Test Results. If the internal memory reaches capacity the test set will warn you that the memory

is almost full. Please cut and paste your results to your PC to remove test results or simply delete. When nished select “Turn Off USB storage” (Android turns green) and unplug the USB cable.

Port B Conguration

Port B is typically used for loopback tests such as RFC-2544. To congure Port B simply press on the Port-A button and select Port-B. You can select speed, copper/ber just as you do with Port-A. There are ve additional buttons and no RFC-2544 or Quick test selection in the Port-B screen along with Port-B Statistics displayed in real time and updated every ½ seconds. Use your nger to swipe up/down to get more Port-B statistics.

Clear Statistics – Press this button to Clear all the Port-B statistics and reset the elapsed time (ET) to zero. Loopback Mode – Selects whether Port-B is in Loopback or Through Mode. Loop-back mode will loop RX to TX of Port-B when the

Loopback button is Green.

Through Mode

Through Mode you can put Port-B in series with a TX or RX of an Ethernet circuit and monitor statistics.

Conguration

Loopback On(default)/Off – When green loopback is ON and loops TX to RX Swap MAC Address ON (default) – When green this mode swaps the destination MAC and the source MAC address the source now

becomes the destination MAC ad-dress. This is used in Loopback modes where one test set or Port (i.e. Port-A) is send-ing to another test set or Port-B and is looped back and in order for the Port-A to re-ceive it must be the destination MAC address. Turn off Swap MAC address and the test set does not swap MAC address and the source will be Port-B.

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Promiscuous Mode ON/OFF(default) – This mode when On(green) will receive ANY MAC address and packets and send them to the Tx port (if loopback is ON). When promiscuous mode is off ONLY if it receives Port-B MAC address will it send (if loop-back is ON) packets to the TX port. The Mac Address for Port A/B is located under the Menu button Sys-Info.

Ping and Trace Route Test

Ping and trace route test is used to test the presence of an active connection. To Ping an address simply press the A-B button (upper right) followed by the Ping button and enter a valid IP address. The DataScout 10G will display the delay an acknowledgement that a Ping was received by the entered IP. The Trace route test discovers the path taken by IP packets across an IP network. It identies the nodes or hops that the packet traversed on its way to the destination.

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DataScout™ 10G

Section 4. DS1 Testing

User Interface

DS1 testing is activated by pressing the DS3-DS1 icon. Note the elapsed time display, “ET: xxx” – ET appears when the self-test has completed. DS1-A default conguration is monitor mode, NW (Network Clock), ESF Framing, and B8ZS Coding, BERT–OFF. The test set supports Single/ Dual T1 test port DS1-A (1) & DS1-B (2) (bantams). Settings, test functions and results are identical

regardless of port selections.

Except for the Clear button, the grey buttons are pull-down menus for changing the selected parameter. Select the test mode (Monitor, TERM, Bridged, etc.) by tapping on the Monitor button and selecting the desired test. In the example below the test set is congured as TERM , NW Clock, ESF Framing , B8ZS Coding, and BERT-Off.

DS1 Auto Conguration

The test set is capable of determining the proper signal and framing detected on a live circuit and self conguring itself to achieve signal lock and pattern synch. This makes conguration fast and easy. To enable select Auto from the framing drop-down menu. The test set will auto-detect and congure the framing, coding and BERT pattern detected on the received signal. Note: if an all-1’s pattern or a xed pattern with a high 1’s density is received, the test set will not be able to auto-detect B8ZS coding. A BERT pattern such as QRSS or 3in24, etc. must be received in order to properly detect B8ZS coding.

DS1 Mode Selection

In the mode selection drop down are the following options: Monitor – Select this mode if monitoring at a DSX (–20dB) point or at a monitor port on smart jacks (NIU). The transmitter is off

when in MONITOR mode.

TERM DSX – Select this mode to perform intrusive testing, e.g. send loopbacks, straight away BERT tests, etc. tap on DS1 TERM

DSX and select a clock mode: looped NW (recovered) or internal INT (master).

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Bridged – Select this mode for monitoring at a high impedance point. The receiver is placed in a >1KΩ high impedance state for

monitoring RX or TX lines. The transmitter is off when in BRIDGED mode.

CSU/NIU Emulation – Tap on CSU/NIU Emulate to congure the test set to respond to CSU, NIU-4, and NIU-5 (Smart Jack)

loopbacks. Upon reception of a loopback the system will beep and display (at the bottom) “**loopback activated**” and the type of loopback detected (e.g. NIU-5 loopback activated!). In a loopback mode the DataScout 10G recovers the RCV data and loops it to the TX. You must rst congure the DataScout 10G for DS1 TERM and then CSU/NIU Emulate. The clocking should be NW (looped-timed) for this mode.

Signaling Bits – Tap Signaling Bits to select the Signaling Bits to display all 24 DS0 channels in of DS1-A and DS1-B on one screen.

This rst bit is A then B, C, D.

PCM Voice – When the DST-SW-V option is enabled the test set can emulate Loop Start (LS), Ground-Start (GS), DID and E&M

circuit (IMM and Wink) from in both CO and PBX (Station) modes.

DS0 Frequency & Level – Select PCM Voice (under TERM/Monitor button) followed by the DS0 channel (1-24) that you would like to

measure frequency and loss. Note the frequency is displayed in Hz +/- 2Hz and the level in dBm0 +/- .5dB. The digital data content (Bit 1 through 8) is also displayed under F&L. along with the hexadecimal equivalent to the binary bit 1-8 value. To exit DS0 Freq/Level (PCM Voice) tap on DS0 channel # and select OFF.

DS0 Data – This option is used for DS0 BERTS and TX/RX DDS control code. To activate select the DS0 channel pull-down (left

of DS0 Data). The DataScout 10G displays the TX and RX data content along with the hexadecimal equivalent to the binary bit

1-8 value.

Fractional T1 – Select this mode to test contiguous and noncontiguous DS0’s (Nx56/64K). Select FT1 select under the Monitor

TERM pull down menu (use nger to scroll down) then tap on a desired channel or all desired channel numbers. You can BERT on the selected channels and perform a BER as well.

Drop & Insert – Requires the DST-SW-DT1 dual port DS1 option. Tap on the DROP & INSERT to drop the DS1-A test side and insert

from the DS1-B bypass side. When you select DROP & INSERT mode a sequence of screens prompt you how to the properly setup and congure the system. One of these setup screens provide a block diagram of which side is the test-side and which is

the bypass and how to correctly patch into the circuit.

DS1 TERM (-7.5, -15, -22.5dB) – Selecting any of these options will activate terminate mode with the transmit level set to the

selected value +/- 2db.

Clock Settings

NW Network Timed – When this mode is selected the test set recovers the clock tim-ing from the received signal. NW is the

default initial setting.

INT Internal Timed – When this mode is selected the test set uses its internal clock to generate the timing signal with a resolution

accuracy of <10ppm at 1.544MHz. Sync and Async data transfer on 24 DS0 is supported.

DS1 Framing Selection

The test set default is ESF framing. To change the TX frame format simply tap on the ESF drop down and select SF(D4), SLC or

unframed.

Framing Status Indicators

Under the ALARMS you will nd two acronyms and status indicators that are very im-portant for determining whether framing lock has been established or not:

• LOS (Loss of Signal)

• OOF (Out of Frame)

When either of these indicators is highlighted in red it means the alarm currently exists. If the alarm has occurred in the past and

is no longer occurring (alarm history) they will be highlighted in yellow. Pressing the CLEAR button will clear all alarm and event

indicators and counters. A large green NO ERRORS banner indicates the signal is currently framed and working properly.

Line Code Selection

Default zero coding is B8ZS. To change to AMI tap on B8ZS and select AMI coding.

Reception of Valid B8ZS Code Words

The test set displays an inverse video B8ZS detected under the Alarms section. When no B8ZS word is detected the inverse video “B8ZS” is extinguished.

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DataScout™ 10G

Excessive Jitter monitor

The test set displays an inverse video Excessive Jitter detected under the Alarms screen. When Jitter is within the specied 128bit attenuator tolerance the inverse video “Excessive Jitter” is extinguished.

Loopback

Five types of loopback are supported:

• PairGain HDSL

• Adtran HDSL

• Smart Repeater

• In-Band

• Manual (self and local)

PairGain HDSL

NREM - Loops the remote HTUR towards the network NLOC - Loops the HTUC toward the network NDU1 - Loops 1st Doublers towards the network NDU2 - Loops 2nd Doublers towards the network CREM - From CPE loops the HTUC towards CPE CLOC - Loops local HTUR towards CPE CDU1 - Loops 1st Doublers towards the CPE CDU2 - Loops 2nd Doublers towards the CPE .

NETWORK to CUSTOMER loopback

CUSTOMER to NETWORK loopback

Adtran HDSL

ARM – Places HDSL / T1 elements into diagnostic mode for detection of loopbacks. You must send ARM before sending Adtran

loopbacks!

HTUR – Loops HTUR towards the Network HTUC – Local HTUC towards Network HRE1 – Loops 1st Extender towards Network HRE2 – Loops 2nd Extender towards Network

Smart Repeaters

ARM – Places HDSL / T1 elements into diagnostic mode for detection of loopbacks. IOR – Intelligent Oce Repeater loops the oce repeater LineRptr 01 – Loops the addressable line repeaters #1 – 20. Use the pull down menu to select the desired repeater #

In-band & FDL

CSU (10000,100) – Loops the T1 CSU towards the network NIU4 (1100, 1110) – Older vintage NIU loopback, Loops the CSU towards the network NIU5 (11000, 11100) – SMART JACK loops the NIU towards the Network

Payload – Loops only the payload towards the network, uses the FDL link (ESF only) Line – Loops entire DS1 at the CSU towards the Network, using the FDL link (ESF) Network – Loops the NIU towards the Network, uses the FDL link (ESF)

User & Self-loop

User – using the set button a user can congure the loop-up and loop down byte

Local-NW – Loops the RX to the TX, manual DS1 loopback towards the network Self-loop – Loops the TX to the RX port internally (used for training and factory tests)

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Loopback Commands

LOOP-Up - sends the selected loop up command LOOP-Down - sends the selected loop down command

NIU5 Smart Jack

Loop Up

NIU5 (Smart Jack) is the default loopback simply Tap on LOOP-UP. Completion of loop up will take approximately 5 seconds the unit will display active, after which a QRSS pattern is automatically started. NUI5 loopback commands require the test set to be in TERM Mode.

Loop Down

Tap the Loop Down button. Note sending will be displayed until the element is looped down.

BERT (Bit Error Rate Test)

Test Pattern Selection

To select and send a test pattern tap on the BERT button. The test set supports the following BERT patterns: QRSS – Industry standard Quasi-Random Signal is formed from 20 Bits with max of 14 consecutive zeros

3in24 – Three ones in 24 bits used to stress AMI lines, (0100 0100 0000 0000 0000 0100) 1:7,1in8 – Used for stress testing AMI & B8ZS lines, (0100 000) All-1’s – All data content is 1’s 1111. In unframed mode this will be interpreted as AIS All-0’s – All data content is 0’s 0000

1:1 Alt – Alternates 1 and 0, …1010 DA LY – Pattern that obeys pulse density and consecutive zeros in both AMI and B8ZS coding Bridge Tap – Sequence of patterns that emulates specic frequencies

2^23-1 – 23 stage shift register, emulates random data 2^20-1 – 20 stage shift register, emulates random data 2^15-1 – Quasi-random sequence of 32767 bits which contains up to 14 con-secutive zero’s 2047 – 2,047 Bit sequence commonly used for 64K DS0 channel testing (DDS) 511- 2^9 – 1 bit pattern used for DDS and DTE/DCE testing

2in8 – Two 1’s in 8 bits, Used for stress testing AMI & B8ZS lines 1in16 – Violates 1’s density but stresses clock recovery circuitry

D5D5 – Intelligent (Smart) Line Repeater address query, sent to determine which repeater is looped

Stopping a BERT

To turn a BERT pattern off tap on the selected BERT pattern (e.g. QRSS) and select “BERT Off” at the top.

BERT results

If the BERT pattern is green this tells the user that the selected pattern matches the receive pattern. The number to the right of the pattern is the bit error count. You can change the error count display by tapping on the Counts pull down menu and selecting one of the following:

Bits – (default), view the number of bits in error. BER – View the bit error rate (bits in error/total bits) since the start of the test. ES – Errored Seconds displays the number of seconds in which one or more errors occurred.

EFS – Error Free Seconds displays the number of total seconds that a test has run error free. %EFS – Percent Error Free Seconds displays the current ratio of EFS to total test sec-onds.

SES – Severely Errored Seconds displays the total number of seconds with an error rate >= 1.0e-3. %SES – Percent Severely Errored Seconds displays the current ratio of SES to total test seconds.

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DataScout™ 10G

Send Errors

This button selects what type of error will be inserted when a user taps the insert key. Available errors include:

• Logic

• Frame bit (single frame error)

• BPV

• Frame Loss

• CRC

Check the box or boxes of the error you would like to insert then press OK.

NOTE: by pressing OK you have not inserted an error into the transmit stream. You MUST tap the “Inject” button to insert an error or error’s (rate) into the transmit data stream.

Clear Errors & Elapsed-Time

To clear Errors and History simply tap on the CLEAR button. Note that the elapsed time gets reset and all accumulated errors,

alarms and events also get cleared. If there are no Alarms or Events you will see NO ERRORS on the screen.

Alarms & Events

The test set continuously monitors for alarms & events. The NO ERRORS display is the sum of no alarms, events or bit errors received. If an alarm or event is received the test set removes the NO ERRORS screen as shown above.

Alarms status is located on the left hand side of the screen and the events are on the right. Next to the alarm is the count, which

represents the number of times the test set has detected this condition. Tap on the Count pull down menu to change to SEC, which

is the duration in seconds the alarm existed. Select the Count pull down menu above the event log to change the count to BER, EFS, SES, %EFS or %SES.

In the example above the unit is currently in Loss of Signal, the LOS is RED and No Signal detected is displayed at the bottom left. Reported Alarms & Events:

LOS – Loss Of Signal OOF – Out Of Frame AIS – unframed all 1’s Yellow – RAI sent by far end device CRC – Error is received in the payload BPV – Bipolar violation has occurred F-Bit – Framing Bit error 1’s Den – 1’s density has been violated UAS – Unavailable seconds, seconds of SES after 10 consecutive seconds of SES.

ExZ – Excessive Zero’s has been received, 15 zero’s for AMI and 7 for B8ZS. Active alarms and events cannot be cleared until the condition itself goes away. For the example above, LOS (inverse video) will not be cleared until valid DS1 pulses are received. To clear the user must press the CLEAR button.

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Frequency, Level and Slips

Signal frequency and level measurement is at the bottom of the LCD. The frequency is displayed in Hz and the level is displayed in dB-DSX and Vp-p. If no signal is received the Freq & level will display “No Signal detected”. Slips are displayed under the frequency and level. Note: a reference clock must be plugged into the DS1-B RCV (Ref) jack. Slip compares the DS1-A clock to the reference (DS1-B RCV) clock and displays the difference in frequency deviation (Hz) and slips (count).

DS1-B Test Interface

The test set can be optioned for a second independent DS1 test interface. To select the second test interface tap on the DS1-A button and select DS1-B. Any tests or conguration changes on DS1-B does not affect the DS1-A side, they are two completely independent test interfaces (e.g. DS1-A can be framed to ESF and DS1-B can be to D4).

EFS – Error Free Seconds displays the number of total seconds that a test has run error free. %EFS – Percent Error Free Seconds displays the current ratio of EFS to total test sec-onds.

SES – Severely Errored Seconds displays the total number of seconds with an error rate >= 1.0e-3. %SES – Percent Severely Errored Seconds displays the current ratio of SES to total test seconds.

DS1-B test features are identical to DS1-A except for DS0 drop.

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DataScout™ 10G

Section 5. DS3 Testing

Test Interface Connections

The DS3 test interface uses BNC connectors as the input (Rx) and output (Tx) to/from the test set. Note: The test set has more than enough processing power to test Dual T1 and DS3 at the same time. You can select DS1-A or B and cycle through DS3 GUI

without affecting your tests.

DS3 Main Menu

From power up select the DS3-DS1 icon, tap on DS1-A then select DS3. The DS3 test interface is powered-up and a quick self-test is performed. The elapsed time ET:xxx appears when the self-test is complete. The DS3 default conguration is DS3 Monitor C-Bit Frame, B3ZS, BERT Off. Alarms highlighted such as LOS indicates a current

condition.

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Conguration

Mode Selection

Select the desired test mode (Monitor, TERM, DS1 Drop, etc.), by tapping on the DS3 Monitor and selecting the desired mode. DS3 Monitor – Select this mode if monitoring at a DSX –20db point or monitor port of a DS3 NIU.

Note: the DataScout 10G transmit is off in MONITOR mode.

DS3 TERM DSX – Select this mode to perform intrusive DS3 tests e.g. straight-away BERTS, loopbacks, NIU emulation, etc. Note in

TERM mode clock selection is im-portant; NW is looped timed and INT is internal timed (the test set sources timing for the

circuit).

DS3 TERM HI – Changes the transmit signal to a rectangular pulse 0.90V base-to-peak.

CSU/NIU Emulation – This mode places the test set in a CSU/NIU conguration and the test set will respond to CSU or NIU

loopback and loop the recovered receive data to the transmit back towards the network.

DS2 STATUS – Select this mode to monitor and test one of the seven DS2’s. The top screen is the receive DS2 1-7 and the bottom

screen is the transmit DS2 1-7. The test set monitors and transmits RAI, AIS and LOF from all seven DS2’s.

DS1 Drop – Select this mode to monitor or Drop any 1 of the 28 DS1’s within the DS3. DS3-DS1-DS0 systems can drop a DS1 to the

DS1-B port. From the main DS3 screen you can select T1 by pressing on DS3 button and select DS1-A or B to go straight to the DS1 test interface.

DS3 Thru Mode – Select this mode for intrusive through-mode testing. Through-mode gives you the ability to place the test set in

series with a RCV or XMT pair for monitoring errors and alarms. The test set receive recovers the DS3 signal and passes it to the transmit circuitry; framing and signal format is regenerated.

DS3 Thru Mode No GEN – Select this mode for intrusive through-mode testing with framing and signal format passing directly

through to the transmit circuitry without re-generating framing errors, BPV, alarms, etc. Any error detected on the RCV pair will be passed through to the XMT pair. The test set still captures and display all received errors.

Clocking

The test set default clocking is NW-Network (recovered) clock. In TERM mode only Int-Internal clock may be selected by pressing NW Network button and select Int-Internal clock. The test set will now be the master clock.

Framing Selection

The test set default framing is ‘C-Bit’. To change the framing press C-Bit and select M13, Unframed or Auto. In Auto framing, the occurrence of an LOS greater than two (2) seconds will trigger an Auto-frame upon next valid signal (pulse) detection.

DS3 Receive Framing

FRAMED! – The DataScout 10G displays a RED “OOF” to the right of the TX frame mode (above).

DS3 Line Code

B3ZS coding is ALWAYS selected for DS3 - users cannot change this setting.

Loopback

Loopbacks are only used in TERM modes (intrusive testing). Tap the Loopback DS3 NIU pull down menu to select a loopback. Note that Monitor mode removes the Loop-back menu.

Local Loopbacks

Self-Loopback – loops the test set transmit port internally to the receive port; this set-ting should only be used for training or

conrming the test set circuitry.

Line-Loop – loops the receive signal to the transmit port (toward the network) Stuff-Bit M23 – Optional loopback for looping M13 Mux’s FEAC Loopback – To loopback a DS3 NIU or MUX select the element to loop i.e. NIU and tap Loop-Up. The test set will check for

pre-existing loop then send the selected loopback code, verify loopback and display “ACTIVE” in place of “Loop-UP”. A 2^23-1 BERT pattern is automatically started upon loop-up. To loop-down a DS3 device simply press the Loop-Down button. Note the Loopback button is removed in Monitor modes.

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DataScout™ 10G

Transmit FEAC Codes

The FEAC code screen displays any received FEAC codes. To transmit a FEAC code, select the Transmit pull-down menu and select the desired FEAC code.

BERT (Bit Error Rate Test)

To select / send a test pattern tap on the BERT pull down menu. The test set currently supports the following BERT patterns:

2^23-1 – is a 23 stage shift register, emulates random data 2^20-1 – is a 20 stage shift register, emulates random data 2^15-1 – is a 15 stage shift register, emulates random data

QRSS – Industry standard Quasi-Random Signal is formed from 20 Bits with max of 14 consecutive zeros 1:1 Alt – alternates 1 and 0 (1010) 1000 – test B3ZS 1010, 1100, 1111 – Simulates RAI, AIS and IDLE (respectively) in non-ANSI elements

Tx Idle, Tx RAI, Tx AIS – transmits per ANSI spec RAI, AIS and IDLE (proper C and X bit) 3in24 – Three ones in 24 bits used to stress AMI lines and clock recovery, (0100 0100 0000 0000 0000 0100).

BERT Default

The test set default is BERT OFF sending all-1’s. To start a BERT select a pattern from the BERT pull down menu. To turn a BERT OFF simply tap on the BERT menu pull down and select BERT OFF at the top.

BERT Results

If the BERT pattern is green this indicates the receive pattern matches the selected pattern and the number to the right of the BERT pattern indicates the bit error count. A user can change the Bit count display by tapping on the Count pull down menu and selecting one of the following:

Bits (default) – view the number of bits in error.

BER – view the bit error rate (bits in error/total bits) since the start of the test.

ES (Errored Seconds) – displays the number of seconds in which one or more errors occurred EFS Error Free Seconds – displays the number of total seconds that a test has run error free. %EFS Percent Error Free Seconds – displays the current ratio of EFS to total test seconds.

SES Severely Errored Seconds – displays the total number of seconds with an error rate >= 1.0e-3. %SES Percent Severely Errored Seconds – displays the current ratio of SES to total test seconds.

Error Injection

The Set Error button selects what type of error will be inserted when a user taps the insert key. Pressing the Set Error button displays six available types of errors:

• Logic (default)

• F-Bit

• BPV

• C-Bit

• P-Bit

• ExZero’s

Check the box or boxes of the error you would like to insert then press OK. To inject the error tap the INJECT button.

Clear Errors & Elapsed-Time

To clear the error and history simply tap on the CLEAR button. Elapsed time will reset and all errors, alarms and events also be cleared.

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Alarms & Events

The test set is continuously monitoring for alarms & events. The NO ERRORS indicates no alarms, no events or bit errors have been detected during the current test period.

The alarms are on the left hand side and the events are on the right. Next to the alarm is the count, which represents the number of times the test set has detected this alarm or event. Select the COUNT pull down menu above Alarms to change to SEC, which is the duration in seconds the alarm was present. Select the Count pull down menu above the event log to change the count to BER, EFS, SES, %EFS or %SES.

To clear history tap the CLEAR button.

Alarms & Events Current

C-Bit – C-Bit Error is received

BPV – Bipolar violation has occurred

F-Bit – Framing Bit error P-Bit – Used for performance Monitoring FEBE – Far End Block Error, FE RCV error

Alarms & Events History

LOS – Loss Of Signal

OOF – Out Of Frame

AIS – Unframed all 1’s

X-Bit – Remote Alarm Indication (RAI) sent by far end device

Idle – 110 with C-Bit =0 X-Bit=1 UAS – Unavailable seconds, seconds of SES after 10 consecutive seconds of SES. ExZ – An Excessive Zero’s event has occurred,

three (3) or more consecutive Zero’s. A current condition cannot be cleared until the condition goes away. For the example on page 23, LOS alarms will not be cleared until valid DS3 SIGNAL is received. To clear history press the CLEAR button.

DS3 Signal: Frequency & Level

Signal frequency and level measurement is displayed at the bottom of the screen. The frequency is displayed in Hz and the level is displayed in Vpk. The test set validates the incoming DS3 signal & pulses and displays Possible STS-1 Signal if the user has accidentally plugged into an STS-1 circuit. If no valid DS3 signal pulses are detected LOS is and No Signal is displayed.

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DataScout™ 10G

Section 6. Signaling

The Signaling-TIMS test interface provides emulation of a Station (PBX) and Central Oce (CO) with LS-Loop-Start, GS-GroundStart, DID Immediate or DID Wink signal-ing. The Signaling-TIMS generates -48V line-battery, ringing, dial tone, DTMF, DP, MF and

voice tones.

To select 2-Wire TIMS from power-up press the Sig-TIMS button; the test set will per-form a self-test after which the TIMS main menu will be displayed. To access 4-wire TIMS press the 2-Wire pull-down button and select 4-Wire.

Signaling-TIMS Interfaces

2-Wire Signaling – uses the RJ11 & single bantam jack 4-Wire Signaling – uses the 4-wire bantam jacks and/or the E&M and SB/SG jacks (also T1-B).

Impedance Selection

2-wire signaling supports voice-band 600, 900 and 1200Ω impedances. 4-Wire signaling also supports the impedances plus 100 (T1) and 135Ω (DDS). To change receive and transmit impedances, tap on the impedance pull-down menu and select the desired impedance. The RCV and XMT are always the same impedance. Some features are enabled or disabled based on impedance and 2/4 Wire selection i.e. 600, 900, 1200 are voice-band impedances and will enable voice-band test features. 100 & 135 Ohm are wideband impedances and will enable wideband features.

Signaling Mode Selection

Upon selection of 2-wire Signaling defaults to LS-Loop-Start Station signaling mode. To change signaling modes simply tap on Station (PBX). Tap the desired Emulation (CO/PBX) and Signaling type (LS, GS, E&M I-V, DID and DID-wink, Selective Signaling). 4-wire Signaling defaults to E&M type I.

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Station LS

This mode emulates a telephone or butt-set in a Loop-Start station circuit and uses a 20mA holding circuit for off-hook conditions.

Station GS

This mode emulates a telephone or butt-set in a Ground-Start station circuit and generates DTMF, DP and MF signaling. The test set grounds the RING and monitors for TIP-ground. It acknowledges by closing the loop (drawing loop current).

Station DID

This mode emulates a DID-IMMEDIATE station (PBX) circuit and generates -48Vdc battery across TIP and RING. The test set monitors for Seizure (far-end CO loop closure) and displays incoming digits.

Station DID WINK

This mode emulates a DID-WINK station (PBX) circuit and generates -48Vdc battery across TIP and RING. The DataScout™ 10G detects Seizure (far-end off-hook), WINK’s (reverses the TIP/RING polarity) and then waits for incoming digits. Tap on the Timing button to view Wink timing measurements.

CO LS

This mode emulates a CO Loop-Start circuit and generates -48Vdc battery across TIP and RING. To go Off-Hook and RING the farend, tap the ON-Hook button. Also in this mode the test set will detect far-end off-hook and provide dial tone to the circuit. Once a digit is received dial tone is removed. Warning: RING voltage will be applied to the TIP/RING.

CO GS

This mode emulates a CO Ground-Start circuit and monitors for line seizure (TIP-ground) then acknowledges by generating -48Vdc battery across TIP and RING. To go Off-hook and SEIZE the circuit, tap On-hook. In all modes above the DataScout 10G measures Tip-Ring voltage, current, digit decode, frequency & level, noise, noise with tone

and displays the state of the far-end.

CO (Signaling) E&M I-V

E&M signaling denes PBX trunk and CO signaling using 2 leads E (Ear or Earth), M (Mouth or Magnet) for Type I and type V and an additional 2 leads (4 total) SG (Signal Ground), SB (Signal Battery) for type II, III, IV. The Signaling (CO) grounds the E lead to go Off-Hook and monitors the Trunk M lead for battery Off-Hook. See table below for On-Hook and Off-Hook states for the various E&M types.

Type Lead On-Hook Off-Hook

I-V E Open Ground

I, III M Ground Battery

II, IV, V M OPEN Battery

CO DID IMMEDIATE

This mode emulates a CO DID-IMMEDIATE circuit. The test set generates DTMF, DP and MF signaling. It also measures Tip-Ring voltage, current, digit decode, frequency & level, noise, noise with tone and displays the state of the far-end. In CO DID Immediate mode the test set uses a 20mA holding circuit for off-hook conditions. Tap DIAL to enter the desired dial digit string. To go OffHook (Seize the circuit) tap Dial from the DIAL screen or tap On-hook, the test set draws loop current and outputs the digits.

CO DID WINK

This mode emulates a CO DID-Wink circuit. The test set generates DTMF, DP and MF signaling. It also measures Tip-Ring voltage, current, digit decode, frequency & level, noise, noise with tone and displays the state of the far-end. In CO DID-Wink mode the test set uses a 20ma holding circuit for off-hook conditions. In CO DID-Wink, tap DIAL to enter the desired dial digit string. To go Off-Hook (Seize the circuit) tap dial from the DIAL screen or tap Off-hook to initiate drawing loop current and monitor for WINK (Tip/Ring polarity reversal). Once detected dialing digits are then transmitted to the station (PBX). Tap on the S TATE button to view associated wink timing measurements.

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DataScout™ 10G

SELECTIVE SIGNALING (SS1/SS4) 2&3 Digit

Selective Signaling is typically used on aviation point-to-point or multipoint circuits that allow a caller to dial a two or three digit

dial code for destination party. SS uses Frequency Shift Key (FSK) 2400 (make) & 2600Hz (break) at a -8dBm0 level when dialing. The number of digits in dial code is 2 or 3 with codes of 81 or 729 respectively. 1 can be used for backspace or digit – for trouble-

shooting it is always displayed when received.

Transmitting SS digits:

1. Congure the test set for Selective Signaling (SS) by selecting 4-Wire Signaling under the 2/4 Wire mode pull down menu (upper

left).

2. Use the Loop Start/DID pull down to select SS.

3. Ensure SS Dial mode is from the pull down menu to the right of the phone# box.

4. Enter 2 or 3 digits in the phone # box using the pop up keyboard. For testing purposes the test set allows any number of digits

to be dialed.

5. Press the Dial button to transmit the digits out the Tx of the 4-Wire port.

Receiving SS digits:

1. Congure the test set for Selective Signaling (SS) by selecting 4-Wire Signaling under the 2/4 Wire pull down menu (upper left).

2. Use the Loop Start/DID pull down to select SS.

The test set is now ready to receive SS digits on the 4-Wire RX port and will be dis-played in the receive digit window. Up to 20 digits can be received then you must exit and re-enter SS mode to capture additional digits.

Return Loss (RL) — Tx Complex Tones

Return Loss is a ratio difference in a transmitted power and the power reected from a discontinuity and is displayed in dB. Return Loss is typically used to measure the impedance match between the circuit under test and a selected termination of 600Ω, 900Ω or 1200 Ω. Return loss uses three bands:

• ERL(Echo Return Loss) transmits frequencies from 560Hz to 1965Hz

• SRL-Hi (Singing Return Loss High) transmit from 2200Hz to 3400Hz

• SRL-LO (Singing Return Loss Low) transmit from 260Hz to 500Hz with a transmit output level between -6dBm and -10dBm Poor return loss is typically in the single digit range. The higher the number the better the return loss and impedance match.

To test Return Loss press the Tx Complex button and select the desired band. The return loss ratio will be displayed in dB next to the RX. To turn off Return Loss (RL) press the Tx Complex button and select Off.

Measurements

Voltage & Current

Voltage measured across TIP & Ring along with current draw is displayed in the upper right of the LCD. If no voltage is detected (less than 1V) No CO line is displayed. Current is measured in an Off-Hook condition and is displayed in mill-amperes (mA).

RX Frequency & Level

The test set defaults to RX (receive) frequency & level measurements. The voice-band frequency is displayed to the right of the RX button along with level in dBm.

TX Frequency & Level

To toggle to transmit (TX) voice-band frequencies tap the big Transmit Tone button. The default TX frequency is 0Hz (Quiet). To change the TX frequency, use the key board to enter the desired frequency then press DONE. Change the step size by high lighting the step frequency text box; enter the desired step frequency and press DONE. To change the TX level, tap the up/down arrow or tap the level box and enter the level, use the (-) to enter lower levels than 0db then

press DONE.

Noise

The test set in 2-Wire mode measures C-MSG noise, C-Notched, S/N C-MSG in Station-LS, GS and CO-DID modes. Tap the noise pull-down menu to select the desired noise measurement. 4-Wire mode offers more noise lters for voice & wide band modes.

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Capturing DTMF/DP & MF Digits and Timing

Upon detection of valid digits the test set displays them (real-time) under the voltage display. If the test set detects an invalid digit it will display “?”. To congure the test set for MF detection tap on the DTMF/DP to toggle to MF detection mode.

In DID-Wink modes, tap the Timing button to view associated wink timing information.

Ringing & Dial Tone

To go Off-hook and Ring the far-end station in LS-CO modes, tap the On-hook button, the test set will apply ring voltage to Tip/Ring and ring-trip on detection of loop current. The test set will apply dial tone when congured for LS-CO when it detects a far-end offhook and remove dial tone upon detection of an incoming digit.

Dialing

If the selected signaling mode supports Dialing a dial button will be appear. Tap on the type of digits to send (MF, DTMF or DP) next to the phone # box, press on the box to enter a phone number, press DONE and then DIAL. It will then go Off-Hook and send

the selected digits. The test set can store and retrieve thousands of phone numbers, contacts and emails, simply tap on Contacts, retrieve the desired

contact number to dial or edit. To edit tap on the number and use the back key and enter the new 10 digit number. To dial select

the stored number and press DONE.

Quick Tones

Under Transmit Tone a Quick tones pull-down enables selecting common frequencies to TX, simply select the desired frequency to

transmit the selected tone. Tone off is the default and you can select this mode to turn off the tone or press the Quiet button.

Quiet Termination

The Quiet button turns off the transmit (Tx) frequency generator and presents a quiet TERM.

Sweep

Users selectable start, stop and step frequencies is supported. To start a sweep test press the Sweep button. The frequency will increment every 2 seconds. To stop the sweep function, press the Stop button.

Tone 1-4 Buttons

These buttons are user dened frequencies. Press the Tone 1 button and enter the desired frequency then press DONE. Note that the text on Tone 1 changes to your entered frequency, repeat for Tone 2, 3 and 4 buttons. To recall a stored tone press the desired tone 1-4 button, then DONE to quickly send your dened tone. The Tone 1-4 buttons are volatile and will be lost upon power down or pressing the home or back key.

Speaker Adjust

The speaker button adjusts the volume. Four levels including mute are available.

4-Wire TIMS

The 4-Wire (dry-loop) TIMS interface uses the bantam jacks marked 4-Wire Rx and Tx on the front-panel. The Rx is the test set input and the Tx is the output. For all wetloop -48V Signaling testing please select 2-Wire Signaling and use the RJ11 jack or single bantam jack. Some feature are enabled or disabled based on impedance and 2/4 Wire selection i.e. 600, 900, 1200Ω are voiceband impedances and will enable voiceband test features. 100 & 135Ω are wideband impedances and will enable wideband features.

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DataScout™ 10G

Terminations

Use the 600 Ohm pull-down menu and select 900 or 1200 Ohm termination or Bridge high impedance. Note voiceband 600, 900, 1200 frequency range is 50Hz to 16KHz and Wideband is 16KHz to 2MHz.

4-Wire TIMS Wideband

Use the 600 Ohm pull-down menu and select 100 or 135 Ohm termination. Wideband mode is typically used for DDS, ISDN, HDSL, T1 and XDSL copper qualications.

Measurements

Transmit & Receive

Receive frequency and level is displayed next to RX and is displayed in Hz and dBm. To change the TX frequency, tap the up or down arrows. The frequency will step up/down by 200Hz in voice-band modes and 20kHz in wide-band modes. Change the step size by highlighting the step frequency (200/20k) and enter the desired step frequency and press DONE. To transmit a specic frequency tap on the frequency box (right of TX), use the keyboard to enter the desired frequency then press Done To change the TX level use the up/down arrow or enter the desired level by highlighting the (0) and entering a level (number) followed by pressing Done.

Sweep Button

The user can select a start and stop frequency along with a step frequency. To start a sweep test press the Sweep button. The frequency will increment by the step frequen-cy that is entered (200Hz) every 2 seconds. To stop the sweep function, press the

STOP button.

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Quick Tones

The Quick tones pull-down includes the most common frequencies to test. In voiceband (600, 900, 1200Ω) these are 404, 1004, 2804, 2713, 1804, 3204, 1913, and 2413Hz. In Wideband (100 and 135Ω) these are DDS, HDSL, and XDSL frequencies 28KHz, 40KHz, 48KHz, 82KHz, 96KHz, 196KHz, 392KHz, and 1024KHz. Select the desired frequency to transmit the selected tone.

Quiet Termination

The Quiet button turns off the transmit (Tx) frequency generator and presents a quiet TERM.

Level Zero Button

This button when green zero’s the receive level for easy frequency response measurements. I.e. if Rx level is -2.3dB, press Level zero and the display will zero the Rx.

Tone 1-4 Buttons

Speaker Adjust

The speaker button adjusts the volume. Four levels including mute are available.

4-Wire Noise Measurements

The test set measures noise with and without tone and support the following lters: Voiceband:

• C-MSG noise

• C-Notched

• D

• D-Notched

• Prog weighted(15KHz Filter)

• Noise to ground

• Impulse and S/N

Wideband:

• E (DSL)

• F (HDSL)

• G (ADSL)

Tap the noise pull-down menu to select the desired noise measurement lter. When in voiceband mode only the voiceband lters will be displayed and in wideband only wideband lters. Noise-to-Ground does not require an external cable and shorts Tip/Ring and measures across T/R to ground, typically through a C-Message lter and displays results in dBrnC.

Impulse Noise

For Impulse noise use the threshold pull down to set the Low (29 to 84) threshold. The Mid, and High levels are set based on the Low threshold setting. The test set counts to 9999 and displays OLF if the counter is greater than 9999 counts. Under the counts you will nd the Clear Impulse counter button. The elapsed time will restart when the Clear button is pressed.

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DataScout™ 10G

Dropouts, Gain & Phase Hits Amplitude Jitter & Phase Jitter

A dropout (Figure 5-1) is counted when the level of the holding tone decreases by at least 12dB+/-1dB whereas gain hits (Figure 5-2) are counted when a change in amplitude of the holding tone exceeds a preset threshold which may indicate an increase or decrease in amplitude. Phase hits (Figure 5-3) are sudden signal phase changes (out & back) lasting longer than 4ms.

Figure 5-1

Figure 5-2

Figure 5-3

To start a Dropout, Gain & Phase test:

1. Check for valid Receive (RX) holding tone frequency and Level

2. Adjust the Gain Hits threshold using the pull down menu located by Hits count 2, 3, 4(default), 6, 8, or 10. This threshold is

only used for Gain hits not Dropouts. Adjust the Phase hits threshold (use pull down menu) from 5-45 degrees in 5 degree

steps.

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3. Tap on the Dropouts, Gain & Phase hits button located under the 4-wire button, the green indicator tells the user that the

Dropout & Hits reference amplitude has been taken and the D&G counters have been cleared along with Elapsed Time. If the amplitude decreases by 12dB (greater than 4ms) from the reference level a Dropout will be counted (maximum of 1 per second). If an increase or decrease in level exceeds the Gain hits threshold pull down (4dB default) then a Gain hit will be counted (max 8 per second). If a phase hits exceeds the threshold then the phase counter will increment. Note: The holding tone must be greater than -40dB. To reset a reference level toggle the D&G button, when green a new reference level is taken and counters/ET is cleared. Dropout counts supersede any Gain hit or Impulse count. To stop counting D&G simply toggle the D&G button and note the green indicator is extinguished. When the test is started References are taken – you may be required to press Clear Counters several times once the Holding tone

has settled.

Amplitude & Phase Jitter

Phase and amplitude jitter (Figure 5-4) test indicates the cumulative effect of incidental phase /amplitude modulation and additive

tones. Comparison between these two measurements can be an effective tool in diagnosing channel impairments. If the circuit is

a digital PCM you do not want the amplitude to be greater than +3dBm as the digital PCM will clip the sign wave. Amplitude Jitter is displayed is % peak 0.1-100% and Phase Jitter is displayed in degree 0.1-350 º.

Return Loss (RL) – Tx Complex Tones

ERL (Echo Return Loss) – transmits frequencies from 560Hz to 1965Hz. SRL-Hi (Singing Return Loss High) – transmits from 2200Hz to 3400Hz SRL-LO (Singing Return Loss Low) – transmits from 260Hz to 500Hz with a transmit output level between -6dBm and -10dBm.

To test Return Loss press the TxComplex button and select the desired band. Return Loss ratio will be displayed in dB next to the RX.

Poor return loss is indicated by a single digit reading, the higher the number the better the return loss and impedance match.

To turn off Return Loss tap the TxComplex button and select OFF.

23-Tone Test

The recommended transmit level of 23-tone sequence is -8dBm which prevents tone clipping on PCM facilities. Press the TxComplex button and select 23-tone to activate transmission. The DataScout 10G will transmit a complex 23-tone waveform at -10dBm on the 4-Wire TX (output) port of the test set. To turn off the 23-tone generator simply the TxComplex button

and then Off.

23-Tone Results Display

To view 23-tone results tap on the View 23-tone button. Use the Dialog buttons to view the desired results. Receive level is displayed in dBm from 0dB to -50dBm. The following results are displayed:

Envelope Delay Distortion (EDD) – is the difference in the transit delay transmitted over a transmission facility) is displayed in

microseconds (uS ) 0 to 12,000uS.

Inter-modulation Distortion (IMD) – is the result of two signals interacting in a non linear device to produce unwanted signals and

displays 2nd and 3rd IMD in dB.

Signal to Total Distortion (S/TD) – is the ratio of power of multiple tone signal to spurious signals and is displayed in dB. Signal to Noise Ratio (SNR) – is the ratio of power of multi-tone to background noise and is displayed in dB.

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DataScout™ 10G

4-Wire Signaling Mode Selection

4-wire signaling mode selection is similarly to the 2-Wire Signaling mode where you have signaling selection and dial functions. Some signaling modes such as Loop Start and Ground Start are not supported in 4-wire modes. To change signaling modes tap on Station (PBX) and then select the desired Emulation (CO/PBX) and Signaling type.

Station DID

This mode emulates a DID-IMMEDIATE station (PBX) circuit and generates -48Vdc battery across TIP and RING and measures TipRing voltage, current, digit decodes, frequency & level and displays the state of the far-end. The test set monitors for Seizure (farend CO loop-closure) and displays incoming digits. Default is DTMF/DP digit decode mode. To decode MF digits tap the receive DTMF/DP text to toggle to MF digit detection.

Station DID-wink

The test set emulates a DID-WINK station (PBX) circuit. The DataScout 10G generates -48Vdc battery across TIP and RING and measures Tip-Ring voltage, current, digit decodes, frequency & level and displays the state of the far-end. The default mode is DTMF/DP digit decode. To decode MF digits tap the receive DTMF/DP text to toggle to MF digit detection. In Station DID-Wink emulation, the test set detects Seizure (far-end off-hook), WINK’s (reverses the TIP/RING polarity) and then waits for incoming digits. Tap on the Timing button to view Wink timing measurements.

CO (Signaling)

E&M I-V – E&M signaling denes a PBX (TRUNK) and a CO (Signaling) using 2 leads E (Ear or Earth), M (Mouth or Magnet) for Type I and type V, an additional 2 leads (4 total) SG (Signal Ground), SB (Signal Battery) for type II, III, IV. The Signaling (CO) grounds the E lead to go Off-Hook and monitors the Trunk M lead for battery Off-Hook. See table below for On-Hook and Off-Hook states for the various E&M types. E&M Testing provides direct user control of On-hook/Off-hook states and monitoring of Far-end Hook state in all modes!

Type Lead On-Hook Off-Hook

I-V E Open Ground

I, III M Ground Battery

II, IV, V M Open Battery

Type II, III, IV connect SG and SB pairs to the SG/SB jacks of the DataScout™ 10G.

Note in Type I and V you CANNOT connect to SG/SB bantam jacks.

PBX (TRUNK) E&M I-V

E&M signaling denes a PBX (TRUNK) and a CO (Signaling) using 2 leads E (Ear or Earth), M (Mouth or Magnet) for Type I and V, an additional 2 leads (4 total) SG (Signal Ground), SB (Signal Battery) for type II, III, IV. The Trunk (PBX) applies battery to its M lead for Off-Hook and monitors its E lead for Signaling side Off-Hook. See table below for On-Hook and Off-Hook Trunk states for the various E&M types. E&M Testing provides direct user control of On-hook/Off-hook states and monitoring of Far-end Hook state in all modes! Type II, III, IV connect SG and SB pairs to the SG/SB jacks of the test set.

Note in Type I and V you CANNOT connect to SG/SB bantam jacks.

CO DID

Emulates a CO DID-IMMEDIATE circuit. The test set generates DTMF, DP and MF. The test set also measures Tip-Ring voltage, current, digit decode, frequency & level, noise, noise with tone and displays the state of the far-end. In CO DID-Immediate mode the test set uses a 20ma holding circuit for off-hook conditions. Tap DIAL to enter the desired dial digit string. To go Off-Hook (Seize the circuit) tap Dial from the DIAL screen or tap On-hook, the test set draws loop current and outputs the digits.

CO DID-Wink

Emulates a CO DID-Wink circuit. The test set generates DTMF, DP and MF. The DataScout 10G also measures Tip-Ring voltage, current, digit decode, frequency & level, noise, noise with tone and displays the state of the far-end. In CO DID-Wink mode the test set uses a 20ma holding circuit for off-hook conditions. In CO DID-Wink, Tap DIAL to enter the desired dial digit string. To go Off-Hook (Seize the circuit) tap Dial from the DIAL screen or tap On-hook, the test set draws loop current and monitors for WINK (Tip/Ring polarity reversal) then transmits digits to the station (PBX). Tap on the STATE button to view associated wink timing measurements.

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SELECTIVE SIGNALING (SS1, SS4) 2&3 Digit

Selective Signaling is typically used on F.A.A. point to point or multipoint circuits that allow a caller to dial a two or three digit dial code for destination party. SS uses Frequency Shift Key (FSK) 2400 (make) & 2600Hz (break) at a -8dBm0 level when dialing. The number of digits in dial code is 2 or 3 with codes of 81 or 729 respectively. 1 can be used for backspace or digit – for

troubleshooting it is always displayed when received.

Transmit SS digits:

Congure the test set for Selective Signaling (SS) by selecting 4-Wire Signaling under the 2/4 Wire mode pull down menu (upper left). Use the LoopStart/DID pull down to select SS. Ensure SS Dial mode is from the pull down menu to the right of the phone# box. Enter 2 or 3 digits in the phone# box using the pop up keyboard. Press the Dial button to transmit the digits out the Tx of the 4-Wire port. For testing purposes the test set allows any number of digits to be dialed!

Receive SS digits:

Congure the test set for Selective Signaling (SS) by selecting 4-Wire Signaling under the 2/4 Wire pull down menu (upper left). Use the LoopStart/DID pull down to select SS. The test set is now ready to receive SS digits on the 4-Wire RX port and will be displayed in the receive digit window. Up to 20 digits can be received then you must exit and re-enter SS mode to capture

additional digits.

Menu Functions

Under the Menu button (left of power button) you will nd Sys-Info, E&M mode and Save Results. The Sys-info displays the unit software/rmware revision along with the installed options. The set jack to EM congures the E&M SB/SG signals to the T1-B port. Save Results takes a screen shot and saves to the internal memory. Use a mini USB cable to retrieve the stored results or Oce7

on test set to view results saved.

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DataScout™ 10G

Section 7. PRI ISDN

North American PRI-ISDN uses DS1 (T1) as the Layer-1 transport while the rest of the world (except Japan-J1) uses E1 as the transport Layer-1. North American PRI-ISDN format is 23B+D, the B channels are bearer data\voice channels and the D is the signaling channel that uses Q.931 codes. 23B+D occupy 24 DS0 channels of a DS1. The test set PRI ISDN interface uses the DS1-B bantam jacks on the front panel. The RX is the input and TX is the output of the DataScout 10G test system. Power on and congure the test set rst before connecting the PRI circuit under test. To test a PRI circuit connect bantam leads to the T1/E1 “B” port bantam and a butt-set or analog phone to the 2-wire signaling RJ-

11 port.

Initial Layer-1 Test

Select the DS1 application and congure settings as follows depending on the type of PRI-ISDN you will be testing. T1

• T1-B

• TERM

• ESF (default)

• B8ZS (default)

• E1-B

• TERM (75 or 120Ω)

• PCM31+CRC (default)

• HDB3 (default)

Press the CLEAR button and verify No Errors or YEL Alarm (will clear after 30 sec) is shown and proper line coding is detected.

Note: An incoming all ones will not detect B8ZS as there needs to be 8 zero’s in a row to detect B8ZS. Also look at the frequency and level and make sure they are within specication. Please refer to DS1 testing section for more information.

PRI Conguration

Once Layer-1 has been checked and veried, from the DS1 application screen press the Home button followed by the PRI application. An initial self test occurs which takes about 2 seconds to complete so do not press any buttons until you see the

elapsed time is increasing.

Your screen should look similar to below when the test set is congured and ready for testing:

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Emulation Mode

TE (CPE/PBX) operation towards switch NT (Switch) operation toward station

Tap on the TE button to toggle to NT in upper left of LCD. NT mode is useful for testing the PBX (CPE) side to isolate any network problems. Note: Connecting to the Network Select TE. Connecting to CPE select NT mode. Select Clocking, NW Clock is Network (Looped) typically used in TE mode. Press NW Clock to toggle to INT Clock for Internal Clock typically used in NT mode where the test set is the source of the clocking. To select the switch type tap National ISDN-2 (default) pull-down menu and select the switch type of your circuit-under-test. National ISDN-2 is the most common but we also support DMS100, 5ESS, 4ESS, Euro-ISDN, VN6, 1TR6, QSIG, NTT, KDD. PRI-ISDN country codes supported include:

• USA and Canada

• Euro-ISDN

• France

• Germany

• Japan

• Hong Kong

• Korea

PRI “Link Active” Layer’s 1 & 2

If not already done, connect the test set to the PRI circuit using the DS1-B bantam jacks. The current layer 1 status should display “Link Active” in the bottom left of the screen. If no Link is displayed check your cables and Layer-1 DS1 connection. It may take up to 30 seconds to complete layer-1 and layer-2 link setup (switch or NT to TE). Once layer-1 and Layer-2 “LINK ACTIVE” is displayed the test set is ready to make or take calls.

Placing a VOICE or Audio Call

When placing a voice call, connect a butt-set or any analog phone to the RJ11 port (2-Wire) on the front panel. From the main menu (press Home) select Sig-TIMS application, WAIT for the TIMS to power up (time will be displayed) tap the 4-wire mode (upper left) followed by ISDN B Channel. Tap the Home key followed by the PRI application, the voice circuitry is now connected to the RJ11 jack. Note you need only do this once for any voice call. Make sure “LINK Active” is displayed in the current state window on the bottom of the LCD. Tap the Call button and enter the phone number followed by Done. Select the type of call Voice (most common selection) or Audio (rarely used due to lower quality) along with the B-Channel (01-23) to place the call on. To set a Local number for Caller-ID tap on local ph# number and enter local# followed by Done.

Note: You do not need to enter a Local# unless you want the far end to see your number. Once congured tap on the note the progress messages. Once you see the

Connected

message the call is connected.

Dial

button and

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DataScout™ 10G

Hang Up

The Hang Up and Answer button will only be visible when there is a call pending or established. To hang up, tap the “Hang up” button. If there are more than one calls simply select the call (by ID#) to disconnect. The call ID# is 2-99 for VOICE calls, 122180 for DATA calls and 181-250 for Audio calls. Use the status screen to determine the ID# and B-Channel of the call you wish to

disconnect. If only one call is estab-lished the test set will not prompt you for which call to disconnect.

Placing a Data Call

To place a DATA call to another PRI-Test Set (straight away test) or a Loopback device make sure “LINK Active” is displayed in the current state window on the bottom left of the screen. Tap the Call button and enter the phone number followed by Done. Select

the type of call (DATA) along with the B-Channel (01-23) to place the call on. To set a Local number for Caller-ID tap on local ph# number and enter local# followed by done and then press Set Local#. Note you do not need to enter a Local# unless you want the far end to see your number. Once congured tap on the Dial button and note

the progress messages

Once the test set has successfully connected the data call you can select a BERT pattern (2047, 511, ALT, 1’s) from the BERT pulldown menu (2047 most common). The test set will display SYNC in green if it receives the BERT pattern it is sending along with 0 Bit Errors. To insert a Bit Error, Tap the Inject Error button. Tap Clear (button to right of Count) to restart the BERT and Clear any Bit Errors.

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Bert

If the BERT pattern is green this tells the user that the selected pattern matches the receive pattern. The number to the right of the

pattern (0) is the bit error count. You can change the error count display by tapping on the count pull down menu and selecting one of the following:

Bits – (default), view the number of bits in error BER – View the bit error rate (bits in error/total bits) since the start of the test ES – Errored Seconds displays the number of seconds in which one or more errors occurred

EFS – Error Free Seconds displays the number of total seconds that a test has run error free %EFS – Percent Error Free Seconds displays the current ratio of EFS to total test sec-onds

SES – Severely Errored Seconds displays the total number of seconds with an error rate >= 1.0e-3 %SES – Percent Severely Errored Seconds displays the current ratio of SES to total test seconds

To turn a BERT pattern off tap on the selected BERT pattern (e.g. 2047) and select “BERT Off” at the top.

Receiving a Call

Before receiving an incoming call make sure “LINK Active” is displayed in the current state window on the bottom left of the LCD If NO LINK then check DS1 Layer-1 using the DS1-B test application and check for OOF and signal/level. When the test set receives an incoming call in the call progress window it displays RING: the type# and call (Voice, Data, Audio), the B-Channel and Caller ID infor-mation. To answer the incoming calls tap the Answer button (only visible when call is pending)

on the top of the screen.

You should see Connected on the status window. If the incoming call is a VOICE call, connect a butt-set or any analog phone to the RJ11 port on the front panel and from the main menu (press Home key for main menu) select Sig-TIMS app, tap the 4-wire TIMS mode followed by ISDN B Channel. Tap the Home key followed by the PRI mode, the voice circuitry is now connected to the RJ11 jack. Note you need only do this once for any voice call. If the incoming call is a DATA call press the Answer button (note Connected) and select a BERT pattern (2047, 511, ALT, 1’s) from the BERT pull-down menu (2047 most common). The test set will display SYNC if it receives the BERT pattern it is sending along with 0 Bit Errors. To insert a Bit Error, Tap the Inject Error button. Tap the Clear (button to right of Count) to restart the BERT and Clear any Bit Errors. Tap the COUNT button to change the display from Bit Errors (default) to the display desired.

Terminate Call

The Hang Up and Answer button will only be visible when there is a call pending or established To hang up, tap the “Hang up” button and select the call (by ID#) to disconnect. The call ID# is 2-99 for VOICE calls, 122-180 for DATA calls and 181-250 for audio calls use the status screen to determine the ID# and B-Channel of the call you wish to disconnect.

Multiple B-Channel Calls

Your test set test system can terminate up to 23 calls (both voice and data) on all B-Channels. If you have more than one call connected use the “B-Chan Voice” selector to change the B-Channel to talk over for voice calls and the B-Chan BERT to select the B-Channel you would like to BERT for data calls. You can only talk on one voice call and BERT on one data call at-a-time. While multiple CALLs (up to 23) can be established only ONE call at a time can be running BERT and only ONE call, at a time, can be routed to the Butt-set interface. Use the “B-chan” button to step through and select any/all CONNECTED calls through the BERT screen or through the Butt-set

interface.

Q.931 Decodes & Status Window

The middle screen (Call Progress Message) logs all link status, call progress and Q.931 decode messages. If you want more information on the cause code tap on the cause code to decode and display the Q.931 cause codes in simple readable text.

Protocol Decode Messages

Layer 2 failure – “D-channel Not Established” Q.931 cause codes – Protocol Decode & translation

Hot-button access to ASCII description is achieved by tapping on the cause code to display a simple text description of Q.931

cause codes.

Clear CALL Status & BERT

Tap Clear Call Status to clear the Call Progress Message window (Call History). To clear Bit errors, tap the CLEAR button. Note the

current status is always displayed on the bottom of the screen.

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DataScout™ 10G

List of Common Problems

Cabling open/shorted – can be veried by checking Layer-1 with DS1 Layer-1 DS1 Timing (clocking) – Framing (must be ESF) and Coding (must be B8ZS). Use DS1 to verify OOF/Freq/Level /B8ZS Miscongured Switch Type – National ISDN-2 is the most common Incorrect B-Channel Mapping

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Section 8. DDS and DataCom

The DDS 4-Wire interface uses an RJ48 jack with a pin-out of pins 1&2 transmit (output) and pins 7&8 receive (input). The test set emulates a CSU/DSU and responds to the following loopback commands:

• Latching CSU, CCITT

• Latching V.54

• Alternating CSU

• Alternating DSU

The DDS interface is 135 Ohm and supports TERM and THRU modes for both primary and secondary channels. Primary channel are unframed and use bipolar violations to transmit control codes such as:

• CMI (Control Mode Idle)

• DMI (Data Mode Idle)

• Loopbacks

The test set encodes and decodes all DDS control codes in Primary and Secondary channels. 64K Clear channel has a line rate of 72K but a data rate of 64K due to the frame format of 64Kbps. For monitor testing please use monitor adaptor. With this adaptor your local loop cannot be greater than -10dB as the adaptor adds loss to the monitor circuit. This is adapter provides features most DDS test sets do not have and allows you to monitor DDS

circuits as you would a T1 circuit.

DDS 4-Wire Connections

Connect the 4-Wire local loop RJ48 male with a pin-out of pins 1&2 transmit (output) and pins 7&8 (receive) to the test set. If the test set immediately detects a CSU loopback the pairs are reversed (1&2 and 7&8 are swapped). After connection, LOS alarm will

disappear and the “misc. status messages” line will display the received signal level and sealing current (voltage across RX & TX pairs).

You may want to perform a cable loss measurement of the receive and transmit pair at the Nyquist frequency (1/2 the line rate), for example at 56K the Nyquist is 28K Hz (greater than -48dB line loss or greater than -40 dB at subrate Nyquist). To transmit and receive frequency use the TIMS application and follow the procedure in the TIMS section of this user manual or simply congure TIMS for freq & level

measurements at 135 Ohm impedance.

DDS 4-Wire Connections

Select the desired data rate by tapping on the 56K Primary Mode (default and most command data rate) and select 64k, 56K, or sub-rates 2.4K, 4.8K, 9.6K,1 9.2K, and 38.4K speed. Select timing clock source mode desired. If connecting to an OCU select NW clock. Connect the 4-wire local loop to the RJ48 port marked DDS.

Receive Loopbacks

The test set will respond to Latching or Alternating CSU, Alternating DSU and Latching CCITT V.54 loopback.

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DataScout™ 10G

CSU Loopback

The test set detects reversal of sealing current and loops the receive circuit to the transmit circuit. The CSU loopback code is detected by the OCU and the OCU reverses sealing current to the CSU/DSU. This loopback is used for checking wiring, OCU’s, DS0

and helps separate where the problem is at the demarc or Customer Premise

(CPE). Removal of sealing current or return to normal polarity terminates the CSU loopback.

DSU Loopback

The test set detects the Alternating DSU loopback sequence and loops it’s receive back to transmit. The ‘Misc. Status Message’ line will display “DSU LOOPBACK”. After reception of four consecutive non-DSU loopback codes the DSU loopback is removed.

V.54 Loopback

The test set detects the latching V.54 loopback pattern and loops it’s receive back to transmit. The ‘Misc. Status Message’ line will display V.54 LOOPBACK. The test set will loop down when a V.54 loop down sequence is received.

Local Loopbacks

Local loopbacks are helpful if the CO cannot loop the test set. To select local loopback, tap the loopback button and select CSU or DSU local loopback and then tap loop-up. The test set will loop the receive signal to the transmit path. To loop down tap the loopback button and then tap loop-down. To loop a far-end CSU/DSU use the “All data V.54” loopback. This loopback does not have any control codes and will not be remapped by the DDS elements. V.54 loopbacks are great for end-to-end tests if the far-end CSU/DSU supports a V.54 loopback).

TX Control Codes

To transmit a control code tap the TX code pull down menu and select the control code you want to send.

DMI – Data Mode Idle (all 1’s) CMI – Control Mode Idle (1111xov where xov is a BPV) OOS – Out of Service (network out of service)

OOF – Out of Frame

UMC – Unassigned Mux Code ASC – Abnormal Station Code (sent when the far-end CSU/DSU is unplugged). MOS – Mux Out of Sync

To stop sending a control code tap the selected control code then tap “TX code” (off).

RX Level and Sealing Current Detection

The test set will display receive (input) level at the bottom of the screen along with sealing current detected on No Loop Current. In a 4-Wire DDS circuit there must be sealing current.

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BERT - Bit Error Rate Test and Display

To send a straight-away BERT or BERT to a unit in loopback tap the BERT pull down menu and select the desired BERT.

2047 – 2^11-1 (2047 bit) pseudo-random data sequence 511 – 2^9-1 (511 bit) pseudo-random data sequence

SP1 – DDS Special Pattern 1 100 Bytes of 0xFF and 100 Bytes of 0x00 SP2 – DDS Special Pattern 2 100 Bytes of 0x7E and 100 Bytes of 0x00 SP3 – DDS Special Pattern 3 Continuously send 0x32

SP4 – DDS Special Pattern 4 Continuously send 0x40 SP5 – DDS Special Pattern 5 Combination of SP1-4

Packet – Embeds CMI(Control Mode Idle) into a 2047 or 511 used in Switch 56 Modes All-1’s – DMI (used for optimum level

measurements)

All- 0’s – used to verify zero coding and stress signal and clock recovery circuits

Alt, 1:1 – 101010 a xed pattern with no BPV’s

The test set will display the industry standard DDS/DataCom errors (AS,%AS, UAS, DGRM, Blk Size, BLK’s, BLK Error and BLK rate) along with BERT pattern in Green if in Sync and Bit errors “0” next to the BERT pattern. A user can change the Bit count display by tapping on the Count pull-down menu and selecting one of the following:

BER – View the bit error rate (bits in error/total bits) since the start of the test

ES (Errored Seconds) – displays the number of seconds in which one or more errors occurred EFS (Error Free Seconds) – displays the number of total seconds that a test has run error free %EFS (Percent Error Free Seconds) – displays the current ratio of EFS to total test seconds SES (Severely Errored Seconds) – the total number of seconds with an error rate >= 1.0e-3 %SES (Percent Severely Errored Seconds) – the current ratio of SES to total test seconds

Bit Error Insertion

To insert a Bit Error into the transmit data stream, tap the Insert Error button. The test set will insert one error with each press of the Insert Error button and can also inject errors at a predened rate.

CLEAR Errors

To clear Errors, tap the CLEAR button. The Bit errors will be cleared to zero and the “ET: xxx” will be cleared and restarted.

Receive Byte and Control Code Decode

Real-time Received data is displayed (below the bit #’s) in binary and hex formats along with a real-time decode of all dened data and control codes. The test set will also display an Invalid Bipolar Violation Code (BPV) if detected. These typically occur when

one side of Tip or Ring is not connected.

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DataScout™ 10G

DataCom Testing

DataCom Testing (Option)

If optioned the test set supports Data Terminal Equipment (DTE) emulation and Data Customer Equipment (DCE) emulation and supports the following interfaces:

Interface Type DTE DCE

RS232 Unbalanced Male DB25 Female DB25

V.35 Balanced Male V.35 Female V.35

X.21 Balanced Male DB15 Female DB15

RS449 Balanced Male DB37 Female DB37

RS530 Balanced Male DB25 Female DB25

DTE BERT Testing

Select the appropriate DTE interface cable and connect the opposite end (looks like a large USB connector) connection to the

test set and the Male DB25 or V.35 to the DCE CSU/DSU. Make sure you screw the connector into the DCE as to make a good connection. The test set reads the RTS (Ready to Send) signal when the connection is active. Select Sync or Async mode, clocking mode and note the frequency displayed under the clock tab, and nally select the cable

type (RS232/V.35). Note the handshake line is highlighted Yellow if active. Press the BERT pull-down to select the desired BERT pattern: QRSS – Industry standard Quasi-Random Signal is formed from 20 Bits with max of 14 consecutive zeros.

3in24 – Three ones in 24 bits used to stress AMI lines 1:7,1in8 – Used for stress testing AMI & B8ZS lines All-1’s – All data content is 1’s 1111. In unframed mode this will be interpreted as AIS All-0’s – All data content is 0’s

1:1 Alt – Alternates 1 and 0

2^23-1 – 23 stage shift register, emulates random data 2^20-1 – 20 stage shift register, emulates random data 2^15-1 – Quasi-random sequence of 32767 bits which contains up to 14 consecutive zero’s. 2047 – 2,047 Bit sequence commonly used for 64K DS0 channel testing (DDS) 511 (2^9-1) – bit pattern used for DDS and DTE/DCE Testing

2in8 – Two 1’s in 8 bits, Used for stress testing AMI & B8ZS lines

BERT SYNC

If the BERT pattern is in Sync the pattern will be highlighted in Green with Bit Errors (0) next to the pattern. If no pattern is detected than the pattern will be highlighted in Red, Yellow is pattern was lost (History).

DCE BERT

Select the appropriate DCE interface cable and connect the Versa connection to the test set and the Female DB25 or V.35 to the DTE Male. Make sure you screw the connector into the DCE as to make a good connection. Select Sync or Async mode, clocking source and note the frequency displayed under the clock tab, and nally select the cable type (RS232/V.35). Note the handshake line are highlighted Yellow if active. In DCE mode the test set activates DSR,CTS, DCD. The DTR & RTS lines are activated by the DTE. Press the BERT pull-down to select the desired BERT pattern. Note patterns are listed on previous page.

Byte Encoder Display

Above the BERT Tab is the Receive and Transmit bits labeled 1-8 bits, the Receive is the test set input and is useful in seeing what type of data is being received. To the right of RX/TX bit display is Async Errors only displayed and updated in Async mode.

Auto Mode

If this option was purchased press the Auto button (upper left of the screen) to Auto detect the cable is plugged into the test set. The test set will congure for what cable is detected.

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Other Features

Up/Down buttons

These buttons increase or decrease the internal frequency by 100Hz steps.

Invert button

This button inverts the BERT pattern that is selected.

Bi-Directional loopback button

This button is useful for checking cable connections, press the Bi-Directional Loopback to loop toward the test set and towards the DTE (DCE mode) or DCE (DTE mode).

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DataScout™ 10G

Section 9. RITS

Rapid Intelligent Timing System

The test set Intelligent Timing System is a unique test system that eliminates and combines three systems into one. It is an Oscilloscope, a T1 Test set and a Switch Box all in one. Cut-over, installation and verication of Timing Signal Generator (TSG) systems such as the Symmetricom 5500 Timehub with thousands (1000’s) of ports per system typically consume 1-2 days each. The Timing system quickly analyzes and accurately tests T1 and CC (Composite clock) timing sources and TSG’s (Timing Signal Generators). When analyzing composite clock signals it is impossible without sophisticated (and expensive) digital storage oscilloscopes to synchronize on the incoming signal with BPV’s since the 64kHz pulse train with BPV’s at 8kHz will trigger continual re-syncing of the oscilloscope trigger-sweep circuitry making precise measurements and assessments of phase extremely dicult and highly subjective.

This is completely eliminated with the high-speed processing of the test set RITS system as the test processor has been trained to

synchronize on these mixed signal inputs resulting in accurate and precise measurements.

These measurements and results are then presented to the User-Operator in a clear format - leaving little room for error and eliminating subjective best-guess assessments.

Test Interface

The Timing test interface is shown below. The T1 and CC reference inputs are accessed via standard bantam jacks. The reference jacks are where you will connect your T1 or CC reference clock to compare its phase and frequency to a single or multiple circuit-under-test. Use the Single bantam jack to compare this one “single” circuit to the reference clock. The Multi-Channel connector must use the Tempo Communications supplied adapter-cable that connects to a TSG system for bulk

access and testing of 10 T1 or CC circuits at a time, enabling TSG circuits to be accessed and tested in seconds - not minutes. The

GND lug is a banana connector and is used to connect the test set ground to the circuit under test as some circuits are referenced

to ground.

Composite Clock and T1 Selection

Select the Timing icon to activate RITS. Composite Clock is the default setting, to change the timing analyzer to T1 simply press the Composite Clock button and select T1.

CC Bridge and TERM Mode

The test set default is Bridged mode which is a high impedance interface (with no 133Ω TERM) and is used on circuits when a termination already present. If no termi-nation is present and the test set is in TERM (load) press the Bridge Button and select TERM (Gnd ref) if you have a ground connected or Live (no Gnd ref) if you do not have a ground connected. The Live mode is a TERM with no ground connected.

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CC Tip to Ring/Tip to Ref Selection

To test the phase from Tip to Ring (default) the Tip to Ring button would be displayed. To test the Tip side of a Single or MultiChannel and compare to the Tip of the reference that is connected to the CC ref bantam jack press the Tip to Ring button and

Select Tip to Ref. On correct signals the Tip to Ring phase should be 180 degrees and the Tip to Ref should be 0 degrees in phase.

Testing Single and Multi-Channel CC Circuits

To test a single circuit, tap the Test Off button and select channel 01. Channel 01 is used for Single CC analysis. Ch2-10 is not used and if selected will simply display No Clock in red.

To test Multi-Channel circuits such as those of a TSG output, connect the supplied cable to the TSG bank, and press the 10-Channel Auto TSG or the Test Off button then “scan all channels” at the bottom of the menu. By selecting Auto-TSG or Scan-all-channels the DataScout 10G will start at channel 01 and will cycle through all 10 channels at the selected Interval and display the Frequency (64000Hz nominal), Vpp of Tip (Voltage peak-to -peak), and Phase between Tip and Ring or Tip and ref (depending on

the Tip to Ring or Tip to Ref selection).

Channel Selections are located under the Test OFF button. Channel 01 is used to test the circuit connected to the Single bantam jack. If no circuit is connected to the Single bantam jack the test set will select and analyze the rst pair (Channel 01) of the circuit(s) connected via the Multi-Channel connector. To analyze channels manually select the Test OFF button and select the channel number (01-10) you wish to test. Note that the results are displayed to the right of the respective channel number.

Test Interval

Press the Set Interval button to change the test analysis duration of each channel. The intervals are 2, 4, 8(default), 15, 20, 30, and 45 seconds. Select the desired interval and press OK. To fully test CC, it is recommended a minimum duration of least 4 seconds.

2 seconds can be used as a quick test to check that signals are present on the channels.

CC Amplitude Measurements

Press the VPP TIP button to change to the following display: +Vpk Tip – Positive Peak Voltage on Tip

-Vpk Tip – Negative Peak Voltage on Tip

Vpp Tip – Voltage Peak to Peak on Tip +Vpk Ring – Positive Peak Voltage on Ring

-Vpk Ring – Negative Peak Voltage on Ring

Vpp Ring – Voltage Peak to Peak on Ring

Tempo Communications Inc. 1390 Aspen Way • Vista, CA 92081 USA • 800-642-2155

DataScout™ 10G

T1 (DS1) Timing Testing & TSG Threshold

Upon power up select the DS1-DS3 icon. You MUST congure the T1-A port for Framing, Term/Monitor, TSG Level and Coding

before starting T1 Timing test from the Timing screen.

For T1 to Reference testing the T1-B must also be congured to match that of the in-coming T1 Reference. The DS1 Test system and the TIMING analysis system work in concert to ensure T1 clock signals are error free.

TSG Threshold

To activate the TSG threshold in the T1-A application press the MENU and select ON. This will set the TSG T1 level threshold to -12.5dB. Any T1 TSG signal lower (i.e. -15dB) than -12.5dB will cause a FAIL to occur in the Timing application. The TSG OFF ignores the -12.5dB threshold and will display PASS if the TSG signal is greater than -36dB. The default for TSG threshold is OFF. Press the Back or Home key and select the Timing Icon. Tap on the Composite button and select T1 or if you have a T1 circuit plugged into the Multi-Channel connector you can press the 10-Channel Auto TSG and the test set will scan the incoming signal to automatically detect the incoming signal type and automatically change the test set conguration (i.e. if the incoming signal is T1 the system will auto-switch to T1). The T1 interface should look like the display below:

T1 Single Test

Press the Test OFF button then channel 01 to test a single T1 circuit. The test set will interrogate the T1 signal for a host of possible problems such as Alarms, Framing, Coding, Frequency, Amplitude, Slips and any other T1 event and will display PASS or FAIL to the right of Channel 01. If FAIL is displayed press the Home button and then the DS1-DS3 icon and the T1-A will display the error or errors detected which have resulted in the FAIL condition. Remember channel 01 is the Single input. This is the signal which is plugged into the Single bantam or the 01 channel in MultiChannel testing. The Single Bantam supersedes the Multi-channel input port for Channel 01.

T1 (DS1) Timing Testing & TSG Threshold

Use the supplied multi-channel adapter cable and connect it to the Multi-channel (VE-SA) connector on the test set and connect the 2x10 pin connector to the output of the desired TSG connector. Press the 10-Channel Auto-TSG or under the Test OFF button

press the scan all channels.

The test set will scan each channel looking for Alarms, Framing, Coding, Frequency, Amplitude, Slips and any T1 event. If there are no errors the test set displays PASS, if one error of any of the above events are detected then a FAIL result will be displayed next to the channel #. In the screen shot below channels 01-04, 06-10 Passed and Channel 05 Failed.

To further investigate the cause of failure on channel 05, select 05 from the channel selection menu (Test Off button below) press

the Home or Back key then press DS1-DS3. By monitoring the T1-A display you can determine the error; Freq, Level, Alarm, Event, Framing, Coding or Slips detected.

Tempo Communications Inc. 1390 Aspen Way • Vista, CA 92081 USA • 800-642-2155

Set Test Time Interval

Press the Set Interval button (upper right) to change the test time for each channel. The intervals are 8, 15, 30 seconds and 1, 2

and 4 minutes. Press OK after selection. T1 signals are more accurately qualied with longer durations (specically Slips when referencing an external T1).

ID Tone

ID-Tone is usefully in identifying cable pairs without affecting service of a T1 or CC pair. To place an ID-Tone on a cable pair simply connect a bantam jack to the SINGLE port jack of the test set and the other end (alligators) to the Tip & Ring of the pair you want

the tone to be placed on.

From the ID-Tone pull-down menu (upper right) select the type of ID-Tone duration required:

Standard ID-Tone – 500ms of 1990Hz & 500ms of 3980Hz +/- 2Hz Fast ID-Tone – 300ms of 1990Hz & 300ms of 3980Hz Short-Low Tone – 300ms of 1990Hz & 700ms of 3980Hz Long-Low Tone – 700ms of 1990Hz & 300ms of 3980Hz

Most users select the Standard ID-Tone for a consistent high tone warble. To turn off the ID-tone select the tone duration from pull-down menu and select ID-Tone OFF.

DVM Mode

To select DVM mode for measuring DC voltage across a pair, from the Composite Clock (T1) pull-down menu (upper left) select DMV mode. Connect a bantam jack to the SINGLE port jack of the test set and the other end (alligators) to the Tip & Ring of the pair you want to measure DC voltage. Also, so 60Hz AC does not affect the voltage readings connect Frame Ground to the white banana GND connector of the test set. The test set measures DC volts from 3V to 58VDC +/- 1Vdc. To exit DVM simply select Composite or T1 from the DVM pull-down menu.

CC Amplitude Measurements

Press the VPP TIP button to change to the following display: +Vpk Tip – Positive Peak Voltage on Tip

-Vpk Tip – Negative Peak Voltage on Tip

Vpp Tip – Voltage Peak to Peak on Tip +Vpk Ring – Positive Peak Voltage on Ring

-Vpk Ring – Negative Peak Voltage on Ring

Vpp Ring – Voltage Peak to Peak on Ring

Tempo Communications Inc. 1390 Aspen Way • Vista, CA 92081 USA • 800-642-2155

DataScout™ 10G

Limited Warranty

Tempo Communications Inc. warrants to the original purchaser of these goods for use that these products

will be free from defects in workmanship and material for one year, excepting normal wear and abuse.

For all Test instrument repairs, you must rst request a Return Authorization Number by contacting our Customer Service department at:

toll free in the US and Canada 800-642-2155

Telephone +1 760 510-0558.

Facsimile +1 760 598-9263.

This number must be clearly marked on the shipping label. Ship units Freight Prepaid to:

Tempo Repair Center, 1390 Aspen Way, Vista, CA 92081 USA.

Mark all packages: Attention: TEST INSTRUMENT REPAIR.

For items not covered under warranty (such as dropped, abused, etc.) repair cost quote available upon request.

Tempo Communications

1390 Aspen Way • Vista, CA 92081 • USA

800-642-2155

Tempo Europe Ltd. • Brecon House, William Brown Close

Cwmbran, NP44 3AB, UK • Tel: +44 1633 927 050

www.TempoCom.com

Tempo Communications Inc. 1390 Aspen Way • Vista, CA 92081 USA • 800-642-2155

Tempo Communications DataScout 10G Users Guide

Specifications and Main Features

Frequently Asked Questions

User Manual