Tellabs 6162 Manual

Ytellabs
technical manual
76-816162
rev A
practice section 816162/816162A/8161628/816162C
©Tellabs, Inc., -I May 1985
all rights reserved, printed in USA
figure 1. 6162A 4Wire-to-2Wire
SF-to-E&M Terminal Repeater module
• Isolation transformers at both facility-side 4wire
ports and at the terminal-side 2wire port.
• Independently switch-selectable 1200 or 600-
ohm terminating impedance at each 4wire facil-
ity-side port, and switch-selectable 900 or
600-ohm terminating impedance in series with
2.15p.F at the terminal-side 2wire port.
• Integral compromise balance network (CBN),
with provision for external precision balance
network (PBN).
• From 0 to 0.030p.F of switch-selectable network
build-out (NBO) capacitance in O.o02p.F
increments.
• Switch-selectable Type I, II, or III E&M interface.
• Switch-selectable A-side or B-side E&M signaling.
• Integral 2600Hz SF tone oscillator.
• Front-panel LED's that light to indicate local
E-Iead and M-Iead busy.
• Reverse-battery and overvoltage protection.
• Opening and monitoring bantam-type jacks at
all ports (6162 and 6162A only).
• Local or remote signaling and equal-level trans-
mission loopback (6162A and 6162C only).
1.05 The loopback circuitry on the 6162A and
6162C provides the following features:
• Ability to remotely perform facility, level, and
equalization transmission tests.
• Ability to remotely test the following signaling
circuitry:
1) SF detector.
2) SF transmitter (both augmented and normal
levels).
3) Transmit path cut.
4) E&M detectors and signaling relay.
5) Signaling logic.
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table 1. 6162X module selection guide
6162, 6162A, 61628, and 6162C 4Wire-to-2Wire
SF-to-E&M Terminal Repeaters
~
J.'~
module front-panel jacks loopback
6162 ves
no
6162A
yes yes
61628
no no
6162C
no
yes
1.04 All four 6162X modules offer the following
features:
• 2wire-to-4wire conversion via an integral mag-
netic hybrid.
• From 0 to 24dB of prescription-set gain or loss
in both the transmit and receive channels at the
facility-side ports.
• From 0 to 24dB of prescription-set loss in both
the transmit and receive channels at the ter-
minal side (on the 4wire side of the hybrid).
• Prescription receive-channel amplitude equal-
ization equivalent to that provided by the
Western Electric 309B Prescription Equalizer.
contents
section 2 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. general description
1.01 The 6162, 6162A, 61628, and 6162C 4Wire-
to-2Wire SF-to-E&M Terminal Repeaters are Tellabs
Type 10 plug-in modules that provide both active
transmission interface and signaling conversion
between a 4wire metallic facility that uses 2600Hz
single-frequency (SF) signaling and a 2wire PBX
trunk or carrier channel that uses E&M signaling.
All four 6162X modules meet the specifications
given in AT&T Technical Reference Pub 43002 for
Network Channel Terminating Equipment (NCTE)
Criteria, and, in addition, the 6162A and 6162C
meet the specifications given in Pub 43004 for
Transmission and Signaling Loopback Criteria.
1.02 In the event that this practice section is
reissued, the reason for reissue will be stated in
this paragraph. In those parts of this practice that
apply equally to the 6162, 6162A, 6162B, and
6162C, all four modules are, for convenience,
referred to as the 6162X module.
1.03 While all four 6162X NCTE modules share
the same basic transmission-interface and signaling-
conversion circuitry, they differ through the pres-
ence or absence of loopback capability and of
front-panel jacks. Table 1 lists the differences be-
tween the four 6162X modules.
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