Patton electronic 2710 user manual LED Descriptions, Txd, Rxd, Los, Alm, Err, Tst, Pwr

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5.0 OPERATION

Once the NetLink-T1™ is installed and configured properly it is ready to place into operation. This section describes the function of the LED indicators, and the use of the loopback and pattern test modes.

5.1 LED DESCRIPTIONS

The NetLink-T1™ is equipped with seven LED indicators that moni- tor the status of communication. Figure 4 (below) shows the location of the LEDs on the NetLink-T1™ Series front panel.

TXD

Model

RXD

 

LOS

 

ALM

2711

ERR

T/L

 

PWR

 

 

Figure 4. Top of NetLink-T1™, Showing LED Indicators

TXD

When the unit sends a one, the TXD LED is

 

turned on. When it sends a zero, the TXD

 

LED is turned off. Moreover, the TXD LED

 

is active only in active DS0 channels. In

 

inactive channels, the TXD LED is off.

RXD

When the unit receives a one, the RXD LED

 

is turned on. When it receives a zero, the

 

RXD LED is turned off. Moreover, the RXD

 

LED is active only in active DS0 channels.

 

In inactive channels, the RXD LED is off.

 

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LOS

The Loss of Sync LED lights when the unit

 

loses synchronization with the incoming sig-

 

nal. This may happen when there is a fram-

 

ing mismatch or a loss of signal. In

 

unframed mode, the LOS LED monitors the

 

status of the transmit clock.

ALM

The alarm LED indicates the presence of a

 

Blue or Yellow Alarm, or Out of Frame con-

 

dition. The ALM LED will blink on every half-

 

second. Alarms may occur due to:

 

• Loss of Synchronization

 

• Loss of Frame

 

• AIS (Blue Alarm)

 

• RAI (Yellow Alarm)

ERR

The error LED indicates various error condi-

 

tions, including framing bit errors, excessive

 

zeros, controlled slips, severe errors, or bit

 

errors (when sending V.52 test patterns).

 

When sending a test pattern, the LED will

 

remain lit if the unit does not receive the

 

identical pattern. When it receives the cor-

 

rect pattern, the LED will turn off. If error

 

insertion is on, the LED will blink once a

 

second if everything is operating properly.

TST

The test indicator LED blinks with a specific

 

pattern depending on the type of test mode.

 

When the unit is in local analog loop, the

 

LED will blink on briefly. When the unit is in

 

remote loop, the TST LED will blink off

 

briefly. When the unit is sending a test pat-

 

tern or is putting the remote unit into V.54

 

loopback, the TST LED will stay on. These

 

are the test modes:

 

• V.54 Loopback & V.52 Patterns

 

• D4 Line Loop (CO initiated)

 

• ESF Line Loop (CO Initiated)

 

• ESF Payload Loop (CO Initiated)

PWR

The power indicator LED will remain lit while

 

the unit is powered. It turns off when the

 

unit is not powered.

 

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Contents User Manual General Information Table of ContentsWarranty Statement CE NoticeFCC Compliance Radio and TV InterferenceFCC Information Industry Canada NoticeTel 301 Email support@patton.com Service InformationFeatures Monday through FridaySupported Applications ConfigurationDIP Switch Configuration 2710 as the Interface between the Telco and CPESwitch SW4 Line Framing and Coding Switch SET Summary TableSwitches SW1, SW2, and SW3 Line Framing OptionsSoftware Configuration Switch SW6 Clock ModeSwitches SW7 and SW8 Line Build Out VT100Introduction to Main Menu Helpful HintsSystem Configuration Line FormatESF default Options ESF, D4, UnframedLine Coding B8ZS default Options AMI, B8ZS, B7ZS DS0 Line Rate 64kbps default Options 64kbps, 56kbpsESF Carrier Loops Enabled default Options Enabled, Disabled Options Network, Internal, ExternalESF Data Link Ansi T1.403 Options Ansi T1.403, AT&T TR54016 54 Loops Enabled default Options Enabled, Disabled Default Config Source Eeprom Option EEPROM, SwitchRemote Loop Idle default System DiagnosticsLocal Loop Idle default SpacebarSelected Pattern Test Pattern Idle default Options Idle or SendingError Insertion Off default Options On, Off NI StatusValid Interval Count & Current Interval Time Error CountersCurrent DIP Switch Settings Rx PRMSet to Default Configuration PasswordLoop Timeout Service InformationPower Connection DTE Interface ConnectionNetwork Interface Connection RXD LED DescriptionsTXD LOSOperating Remote Digital Loopback RL Loop V.54 & Telco DiagnosticsOperating Local Loopback LL Central Office LoopsBIT Error Rate V.52 Diagnostics Patton NETLINK-T1 Model SpecificationsQrss Wire Gauge Capacitance Resistance Patton NETLINK-T1 Model Cable RecommendationsPatton Model # Description Patton NETLINK-T1 Model Interface PIN Assignment Patton NETLINK-T1 Model Power Supply Interface Jumper Position for Power via DC Power Jack defaultJumper Position for Power via Pin KK

2710 specifications

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