Tellabs 6047 - User Manual

'irtellabs
technical manuai
76-826047A
rev B
practice section
816047/826047 A
©Tellabs, Inc., 2
October 1983
all rights ,~ ~ -- .. _~ '1rinted in USA
6047 and 6047 A 4Wire-to-4Wire SF-to-E&M
Network Terminating Modules
page 1
page 3
page 9
page
14
page 22
page 18
page 19
contents
section 1
general description
section 2 application
section 3 installation
section
4 circuit description
section
5 block diagram
section 6 specifications
section 7 testing and troubleshooting
1.01 general description
1.01 The 6047 4Wire-to--4Wire SF-to-E&M Net-
work Terminating Module with Gain and the 6047 A
4Wire-to--4Wire SF-to-E&M Network Terminating
Module with Gain and Loopback (figure 1) each
provide signaling and transmission interface be-
tween a
4wire facility that uses single-frequency
(SF) signaling and a
4wire trunk (typically, a PBX
trunk)
or a 4wire line that uses E&M signaling. Both
modules provide active level control in
the transmit
and receive paths, receive-path amplitude equal-
ization, and full-duplex conversion between
the SF
signaling on
the facility and the E&M signaling on
the trunk or line. Conventional 2600Hz SF tone is
supplied
by an integral oscillator. The 6047 and
6047 A differ from ordinary 4wire E&M SF signaling
sets in
that they contain integral amplifiers to
accommodate a variety of facility interface levels.
Unlike
the 6047, the 6047 A contains integral loop-
back circuitry that facilitates local or remote testing
of both
the module and the facility. As members of
Tellabs'
262U Universal Network Terminating Sys-
tem of modules and enclosures,
the 6047 and
6047A each fulfill Registered Facility Interface
Codes
TC31 E, TC31 M, TC32 E, TC32 M, TL31 E,
TL31 M, TL32E, and TL32M for network-terminating
applications
where the serving telephone company
uses SF signaling.
1.02
In the event that this practice section is re-
issued,
the reason for reissue will be stated in this
paragraph.
1.03 Features and options of
the 6047 and
6047 A include the following: full prescription align-
ment capability; balanced, switchable 1200, 600,
or
150-ohm terminating impedances on the facility
side; fixed, balanced 600-ohm terminating imped-
ances on
the terminal side; facility-side amplifiers
and terminal-side attenuators for interface with a
variety
of levels; active slope-type receive equaliza-
tion; switch-selectable A-side
or B-side E&M signal-
ing; switch-selectable Type
I, II, or III E&M interface;
minimum-break transmit and receive pulse correc-
tion; and an integral sealing-current source. The
6047 A alone contains the aforementioned loop-
back
circuitry with both local (manual) and remote
(two-tone) loopback-state control. Except for this
difference,
the two modules are identical.
page 1
figure
1. 6047 and 6047A 4 Wire-to-4 Wire
SF-to-E&M Network Terminating Modules
1.04 Prescription-set transmit and receive ampli-
fiers on
the facility side of the 6047 and 6047 A
allow each module
to interface the SF signaling
facility directly,
i.e., without a separate facility-side
line amplifier. These integral amplifiers, in conjunc-
tion with prescription-set transmit and receive
attenuators on
the terminal side, provide for full
coordination between facility-side and terminal-
side levels. Both facility-side amplifiers on each
module provide from 0
to 24dB of gain in switch-
selectable
O.ldB increments, and both terminal-
side
attenuators provide from 0 to 24dB of loss in
switch-selectable
0.1 dB increments. In the receive
channel, input TLP's (transmission level points)
from
-17 to +7 can be accommodated and output
TLP's from +7 to -17 can be derived. In the
transmit channel, input TLP's from -16 to +8 can
be accommodated and output TLP's from
+8 to
-16 can be derived. The overload point at all four
ports of the 6047 and 6047 A is +5dBmO.
1.05
An active slope equalizer for nonloaded
cable in
the receive channel of the 6047 and
6047 A permits from 0 to 7.5dB of equalized gain to
be introduced at 2804Hz (re 1004Hz) in switch-
selectable 0.5dB increments. Because this equal-
izer
does not affect 1004Hz levels, equalization
can be introduced not only before but also
after
receive-channel levels are set, with no interference
between level and equalization adjustments.
1.06 Transformer coupling is provided at all
four
ports of the 6047 and 6047 A The two facility-side
transformers on each module can be indepen-
dently switch-optioned for balanced 1200, 600, or
150-ohm terminating impedance, while the two

Summary

Section 1 General Description

1.01 General Description

Provides an overview of the 6047/6047A module's purpose and functionality.

1.03 Features and Options

Lists the key features and available options for the 6047 and 6047A modules.

1.04 Amplifiers and Attenuators

Details the integral amplifiers and attenuators for level coordination.

1.05 Active Slope Equalizer

Explains the receive-channel slope equalization capability.

1.06 Transformer Coupling

Describes the transformer coupling and impedance options.

Section 1 General Description

1.07 Sealing-Current Source

Details the function and selection of the integral sealing-current source.

1.10 E&M Signaling Modes

Covers E&M signaling modes and interface type compatibility.

1.13 6047 A Loopback Circuitry

Details the loopback features exclusive to the 6047A model.

1.15 Front Panel Features and Power

Describes front panel indicators, jacks, and power requirements.

Section 2 Application

2.01 Module Functions

Outlines the combined functions of the 6047/6047A modules.

2.02 Application Examples

Presents examples of typical network-terminating applications.

Terminal Interface

Focuses on the interface with the local E&M trunk or line.

2.03 Terminal Interface Details

Details terminal-side attenuators and transformers.

Facility Interface

Focuses on the interface with the SF transmission facility.

2.04 Facility Interface Details

Details facility-side transformers and impedance options.

2.05 Integral Sealing-Current Source

Describes the sealing-current source for facility-side pairs.

Level Control

Explains how levels are managed between facility and terminal sides.

2.06 Prescription-Set Amplifiers

Details facility-side amplifiers for direct SF facility interface.

Section 2 Application

Level Coordination

Explains how facility and terminal levels are coordinated using gain/loss.

Section 2 Application

Receive-Channel Amplitude Equalization

Details the active slope equalizer for nonloaded cable response.

2.07 Receive Equalizer Function

Explains introduction of gain at 2804Hz for equalization.

E&M Signaling Interfaces

Covers the selection of Type I, II, or III E&M interfaces.

2.08 E&M Interface Types

Describes suitability of interface types for switching systems.

E&M Signaling Modes

Explains the differences between A-side and B-side signaling.

2.09 Signaling Modes Overview

Differentiates A-side (E-lead ground) and B-side (M-lead battery) signaling.

2.10 A-Side E&M Signaling

Details A-side signaling operations and E-lead output.

Section 2 Application

2.11 E-Lead Output Details

Describes the E-lead output derivation via relay.

2.12 B-Side E&M Signaling

Details B-side signaling operations and M-lead output.

2.13 M-Lead Output Details

Describes the M-lead output derivation via relay.

Incoming SF Tone Detection

Explains how the module detects incoming SF tone.

2.14 SF Tone Detector Operation

Details SF tone detection threshold and signal-to-guard ratio.

2.15 Band-Elimination Filter Insertion

Describes BEF insertion to prevent SF tone propagation.

2.16 Receive Pulse Corrector

Explains the function of the minimum-break pulse corrector.

Section 2 Application

2.17 SF Tone Transmission

Describes SF tone transmission levels and timing.

Transmit Pulse Correction

Details pulse correction for outgoing SF tone.

2.18 Delay Circuit Operation

Explains the 20ms delay and pulse correction.

Section 2 Application

Transmit Path Cut

Explains how the transmit voice path is cut during specific intervals.

2.20 Transmit Voice Path Cut

Details conditions under which the transmit path is cut.

SF Tone Source

Notes the integral 2600Hz SF tone oscillator.

2.22 Integral SF Tone Oscillator

Specifies oscillator frequency and stability.

Power

Details power supply requirements and current draw.

2.23 Power Requirements

Lists input voltage and current draw details.

Loopback (6047 A Only)

Covers loopback functions available only on the 6047A.

2.24 Loopback Circuitry

Explains the purpose of the 6047A's loopback circuitry.

2.25 Manual Loopback

Describes how to activate manual loopback for local testing.

2.26 Two-Tone Loopback

Describes activation and deactivation options for two-tone loopback.

Section 3 Installation

3.01 Visual Inspection

Procedures for visually inspecting modules upon arrival.

3.02 Module Mounting

Details how modules connect to mounting shelves.

3.03 Installer Connections

Information on making external wiring connections.

Section 3 Installation

3.06 Option Selection Overview

Introduces the process of selecting module options via switches.

3.07 4-Wire Receive-Input-Port Impedance

Explains how to select the impedance for the receive input.

3.08 4-Wire Transmit-Output-Port Impedance

Explains how to select the impedance for the transmit output.

3.09 Simplex-Lead;Sealing-Current Selection

Details switch settings for simplex leads or sealing current.

3.10 E&M Signaling Interface

Covers selection of Type I, II, or III E&M interfaces.

3.11 A-Side;B-Side E&M Signaling

Explains how to select A-side or B-side signaling.

3.12 Loopback Options (6047 A Only)

Introduces the selection of loopback features for the 6047A.

Section 3 Installation

Manual Loopback (6047 A Only)

Describes switch settings for manual loopback activation.

Tone Loopback Detector (6047 A Only)

Explains enabling the detector for two-tone loopback.

Loopback Timeout Interval (6047 A Only)

Details settings for automatic loopback deactivation timeouts.

E Lead Forced Busy During Loopback (6047 A Only)

Explains the option to force E-lead busy during loopback.

Section 3 Installation

3.13 Alignment (General)

Outlines the general steps for module alignment.

3.14 Prescription Alignment

Describes alignment using pre-determined circuit record settings.

3.15 Non-Prescription Alignment

Describes alignment when prescription settings are unavailable or insufficient.

3.16 Prealignment Switch Settings

Specifies initial switch settings before non-prescription alignment.

3.17 Receive-Channel Alignment

Details the process of aligning the receive channel.

Section 3 Installation

3.18 Transmit-Channel Alignment

Details the process of aligning the transmit channel.

Section 3 Installation

3.19 Loopback-Level Adjustment (6047 A Only)

Details adjusting loopback path gain/loss for equal levels.

Section 4 Circuit Description

4.01 Function Sequence Flowcharts

Introduces flowcharts illustrating module operation.

4.02 Flowchart Purpose

States the intended use of flowcharts for engineering and troubleshooting.

Section 6 Specifications

Transmission Specifications

Lists performance metrics for signal transmission.

Alignment Levels

Specifies transmit and receive input/output level points (TLPs).

Facility;Terminal Port Impedances

Lists selectable impedances for facility and fixed for terminal ports.

SF Transmit Section Specs

Details specifications for the SF transmit section.

SF Receive Section Specs

Details specifications for the SF receive section.

Section 6 Specifications

Loopback Specifications (6047 A Only)

Lists parameters for loopback control and level adjustment.

Power Requirements

Details input voltage, current, and power consumption.

Physical Specifications

Provides dimensions, weight, and environmental operating conditions.

Section 7 Testing and Troubleshooting

7.01 Testing Overview

Introduces the approach to testing and troubleshooting the modules.

Section 7 Testing and Troubleshooting

7.02 Contacting Customer Service

Provides contact information for Tellabs Customer Service.

Replacement

Outlines procedures for obtaining replacement modules.

7.04 Obtaining Replacement Module

Details how to order a replacement module from Tellabs.

Repair and Return

Outlines procedures for returning modules for repair.

7.05 Returning Module for Repair

Provides addresses and instructions for module repair returns.

Section 7 Testing and Troubleshooting

Troubleshooting Guide

Provides a guide to diagnose and resolve common module issues.

Module Inoperative

Lists causes and solutions for a completely inoperative module.

Transmission Level Issues

Lists causes and solutions for incorrect transmission levels.

SF Tone Transmission Issues

Lists causes and solutions for SF tone transmission problems.

Loopback Malfunction

Lists causes and solutions for loopback activation or operation issues.

Section 5 Block Diagram

Tellabs 6047 Specifications

General

Product Type	Optical Line Terminal (OLT)
Manufacturer	Tellabs
Model	6047
PON Standard	GPON
Humidity	5% to 95% non-condensing
Wavelength	1490 nm (downstream), 1310 nm (upstream)
Operating Temperature	0°C to 40°C