Hubbell GAI-TRONICS LE300 Series User manual

Pub. 42004-735L2E
G A I - T R O N I C S ®
A H U B B E L L C O M P A N Y
LE300 Series Wall Mount Line Extenders
TA B L E O F CO N T E N T S
GAI-Tronics Corporation 3030 Kutztown Road, Reading, PA 19605 USA
610-777-1374 ◼800-492-1212 ◼Fax [phone]
VISIT WWW.HUBBELL.COM/GAI-TRONICS/EN FOR PRODUCT LITERATURE AND MANUALS
Confidentiality Notice.....................................................................................................................1
General Information.......................................................................................................................1
Features....................................................................................................................................................2
Line Extender and Sub-Component Details.........................................................................................2
Model LE300........................................................................................................................................4
Models LE300-MM, LE300-MM1, LE300-SM, and LE300-SM1......................................................4
Model LE300-MM2 and LE300-SM2..................................................................................................5
Audio Termination Connection Module...............................................................................................5
Input/Output (I/O) Termination Connection Module ...........................................................................6
Main PCBA...........................................................................................................................................7
Installation ......................................................................................................................................8
Mounting..................................................................................................................................................8
Wiring......................................................................................................................................................8
Power Connections ...............................................................................................................................8
Page/Party System Cable Connection...................................................................................................9
T1/E1 Data Connections.....................................................................................................................10
Contact Closure Input Connections....................................................................................................10
Contact Closure Output Connections..................................................................................................11
Page Line Audio Monitoring Connections.........................................................................................13
Fiber Optic Cable Connections............................................................................................................13
Fiber Optic Transceiver Set-Up (Models LE300-MM and LE300-SM) ............................................15
Fiber Optic Transceiver Set-Up (Model LE300-MM1 or LE300-SM1) ............................................16
Fiber Optic Transceiver Set-Up (Model LE300-MM2 or LE300-SM2) ............................................17
Configuration................................................................................................................................18
Audio Functions....................................................................................................................................18
Page Line Audio Transmission...........................................................................................................18
Page Line Audio Monitoring Output..................................................................................................19
Page Line Audio Detect Output Contact ............................................................................................20
Page Line FSK Data Transmission (SmartSeries Systems)................................................................20
Page Line 50 kHz VLC Transmission................................................................................................21
Page Line Ground Fault Detection .....................................................................................................21
Page Line Ground Fault Re-generation ..............................................................................................22
Page Line Ground Fault Output Contact ............................................................................................22
Party Line Audio Transmission..........................................................................................................23
Party Line Off-Hook Detection ..........................................................................................................23
Party Line Off-Hook Regeneration.....................................................................................................24
Audio Line Connection Relays...........................................................................................................25
Audio Line Muting .............................................................................................................................26

Table of Contents Pub. 42004-735L2E
GAI-Tronics Corporation 3030 Kutztown Road, Reading, PA 19605 USA
610-777-1374 ◼800-492-1212 ◼Fax [phone]
VISIT WWW.HUBBELL.COM/GAI-TRONICS/EN FOR PRODUCT LITERATURE AND MANUALS
Page/Party Line Balance..................................................................................................................... 26
I/O (Contact Inputs & Relay Outputs)................................................................................................28
Echo Cancellation............................................................................................................................... 29
Manual Initiation of Echo Cancelation............................................................................................... 29
Data Links .............................................................................................................................................30
T1/E1 Data Link................................................................................................................................. 30
Low Voltage Differential Signaling (LVDS) Data Link ....................................................................30
T1/E1 and LVDS Data Link Configuration........................................................................................30
Typical Data Link Settings.................................................................................................................34
PC Board Connection and Setting Summary.....................................................................................38
Installation Settings Documentation...................................................................................................42
Operation.......................................................................................................................................44
LED Indication......................................................................................................................................44
Audio Test Signal Generation..............................................................................................................45
Functional Testing ................................................................................................................................46
Replacement Parts.........................................................................................................................48
Specifications ................................................................................................................................49
Electrical................................................................................................................................................49
T1 Parameters.......................................................................................................................................49
E1 Parameters.......................................................................................................................................49
Cable ......................................................................................................................................................49
Line Balance Characteristics...............................................................................................................50
Page Line or Party Line Maximum Peak Working Voltage.............................................................50
Page Line Data......................................................................................................................................50
Page Line Monitor Audio from Either Page Line..............................................................................51
Page Line Audio between Two LE300s...............................................................................................51
Party Line #1 Audio between Two LE300s ........................................................................................51
Party Line #2 to #5 Audio between Two LE300s...............................................................................52
Page Line Functions..............................................................................................................................52
Party Line Off-hook detection.............................................................................................................52
Contact Outputs....................................................................................................................................53
Contact Inputs.......................................................................................................................................53
Fiber Optic Transceiver.......................................................................................................................53
Mechanical.............................................................................................................................................54
Environmental.......................................................................................................................................54
Frequently Asked Questions.........................................................................................................55

Table of Contents Pub. 42004-735L2E
GAI-Tronics Corporation 3030 Kutztown Road, Reading, PA 19605 USA
610-777-1374 ◼800-492-1212 ◼Fax [phone]
VISIT WWW.HUBBELL.COM/GAI-TRONICS/EN FOR PRODUCT LITERATURE AND MANUALS
List of Figures
Figure 1. Typical System Block Diagram.....................................................................................................1
Figure 2. Model LE300 Series Outline.........................................................................................................3
Figure 3. Interior Component View—Model LE300....................................................................................4
Figure 4. Interior Component View—Models LE300-MM, -MM1, -SM, and -SM1 ..................................4
Figure 5. Interior Component View—Models LE300-MM2 and -SM2.......................................................5
Figure 6. Audio Termination Connection Module........................................................................................5
Figure 7. Input/Output (I/O) Connection Module.........................................................................................6
Figure 8. 69443-xxx Main PCBA.................................................................................................................7
Figure 9. Page/Party Cable Terminals..........................................................................................................9
Figure 10. Data Line Terminals..................................................................................................................10
Figure 11. Input Contact Terminals............................................................................................................10
Figure 12. Relay Output Terminals.............................................................................................................11
Figure 13. T1/E1 Fiber Optic Transceiver for LE300-MM, -MM1, -SM and -SM1 (top view) ................13
Figure 14. T1/E1 Fiber Optic Transceiver for LE300-MM2 and -SM2 (top view)....................................14
Figure 15. Fiber Optic Cable Connection...................................................................................................15
Figure 16. DIP Switches on Fiber Optic Transceiver (LE300-MM or LE300-SM only)...........................15
Figure 17. DIP Switches on Fiber Optic Transceiver (LE300-MM1 or LE300-SM1 only).......................16
Figure 18. DIP Switches on LE300-MM2 or LE300-SM2 Fiber Optic Transceiver only..........................17
Figure 19. Point-to-Point Page/Party System Connection..........................................................................34
Figure 20. Point to Multi-point Page/Party System Connection.................................................................34
Figure 21. Series Connection of Page/Party System...................................................................................35
Figure 22. Maximum Series Connections...................................................................................................36
Figure 23. Maximum Parallel Connections ................................................................................................37
Figure 24. Invalid Loop Connection of Page/Party Systems......................................................................37

Table of Contents Pub. 42004-735L2E
GAI-Tronics Corporation 3030 Kutztown Road, Reading, PA 19605 USA
610-777-1374 ◼800-492-1212 ◼Fax [phone]
VISIT WWW.HUBBELL.COM/GAI-TRONICS/EN FOR PRODUCT LITERATURE AND MANUALS
List of Tables
Table 1. Color Codes for GAI-Tronics 60029 Series System Cable ............................................................9
Table 2. T1/E1 Data Connections...............................................................................................................10
Table 3. Contact Closure Input Connections..............................................................................................11
Table 4. Contact Closure Output Connections............................................................................................12
Table 5. Page Line Audio Monitoring Connections ...................................................................................13
Table 6. Main PCBA Transmission Direction Hold Time Settings............................................................18
Table 7. Main PCBA Peak Voltage Level Detection Threshold Setting....................................................18
Table 8. Main PCBA Page Line Monitor Output Gain Settings.................................................................19
Table 9. Main PCBA Page Line Audio Detect Contact Settings................................................................20
Table 10. Main PCBA Page Line FSK Transmission Setting ....................................................................20
Table 11. Main PCBA Page Line 50 kHz VLC Transmission Setting.......................................................21
Table 12. Main PCBA Page Line Ground Fault Detection Setting ............................................................21
Table 13. Main PCBA Page Line Ground Fault Regeneration Setting.......................................................22
Table 14. Main PCBA Page Line Ground Fault Contact Setting ...............................................................22
Table 15. Main PCBA Party Line On-Hook Muting Setting......................................................................23
Table 16. Main PCBA Party Line Off-Hook Detection Settings................................................................24
Table 17. Main PCBA Off-Hook Regeneration Setting .............................................................................24
Table 18. Main PCBA Audio Line Connection Relay Settings..................................................................25
Table 19. Main PCBA Audio Line Mute Setting........................................................................................26
Table 20. Audio Termination Connection Module Page/Party Line Balance Settings...............................27
Table 21. Main PCBA Echo Cancellation Power-On Delay Setting..........................................................29
Table 22. Main PCBA T1/E1 Data Format Setting ....................................................................................31
Table 23. Main PCBA T1 Line Length Setting..........................................................................................31
Table 24. Main PCBA Receive Equalizer Gain Limit Setting....................................................................32
Table 25. Main PCBA Master Clock Setting..............................................................................................32
Table 26. Main PCBA T1/E1 Data Line Grounding Setting ......................................................................32
Table 27. Main PCBA LVDS In Port Setting.............................................................................................33
Table 28. Main PCBA LVDS Out Port Setting ..........................................................................................33
Table 29. Point-to-Point Page/Party System Connection Table .................................................................34
Table 30. Point to Multi-point Page/Party System Connection Table........................................................35
Table 31. Series Connection of Page/Party System Cable..........................................................................36
Table 32. Audio Line Termination PCBA..................................................................................................38
Table 33. Input/Output Termination Connection Module ..........................................................................39
Table 34. Main PCBA.................................................................................................................................40
Table 35. Line Balance Resistor Enable on Audio Line Termination PCBA.............................................42
Table 36. Line Balance Resistance on Audio Line Termination PCBA.....................................................42
Table 37. Off-hook and Ground Fault Detection on Main PCBA..............................................................42
Table 38. DIP Switch SW2 on Main PCBA...............................................................................................43
Table 39. DIP Switch SW3 on Main PCBA...............................................................................................43
Table 40. DIP Switch SW4 on Main PCBA...............................................................................................43
Table 41. DIP Switch SW5 on Main PCBA...............................................................................................44
Table 42. DIP Switch SW6 on Main PCBA...............................................................................................44
Table 43. T1/E1 Line Grounding on Main PCBA......................................................................................44
Table 44. Copper Port Indicators (Model LE300-MM and LE300-SM)....................................................44
Table 45. Fiber Optic Port Indicators (Model LE300-MM and LE300-SM)..............................................45
Table 46. Copper Port Indicators (Model LE300-MM1 and LE300-SM1)................................................45
Table 47. Fiber Optic Port Indicators (Model LE300-MM1 and LE300-SM1)..........................................45
Table 48. Audio Test Signals......................................................................................................................46
Table 49. Data Signal on Page Line Generation.........................................................................................47
Table 50. Contact Closure Output Activation.............................................................................................47
Table 51. Off-Hook & Ground Fault Generation........................................................................................47

Table of Contents Pub. 42004-735L2E
GAI-Tronics Corporation 3030 Kutztown Road, Reading, PA 19605 USA
610-777-1374 ◼800-492-1212 ◼Fax [phone]
VISIT WWW.HUBBELL.COM/GAI-TRONICS/EN FOR PRODUCT LITERATURE AND MANUALS

Pub. 42004-735L2E
GAI-TRONICS
®
A HUBBELL COMPANY
LE300 Series Wall Mount Line Extenders
GAI-Tronics Corporation 3030 Kutztown Road, Reading, PA 19605 USA
610-777-1374 800-492-1212 Fax [phone]
V
ISIT WWW . HUBBELL . COM / GAI - TRONICS / EN FOR PRODUCT LITERATURE AND MANUALS
Confidentiality Notice
This installation, operation, and maintenance manual contains sensitive business and technical
information that is confidential and proprietary to GAI-Tronics. GAI-Tronics retains all intellectual
property and other rights in or to the information contained herein. Use this information only in
connection with the operation of your GAI-Tronics product or system. Do not disclose this manual in any
form, in whole or in part, directly or indirectly, to any third party.
The following are trademarks of GAI-Tronics Corporation:
SmartSeries
®
Page/Party
®
ADVANCE SmartVolume
TM
General Information
Use the Model LE300 Series line extenders in pairs to extend the operating distance of Page/Party,
SmartSeries, or ICS Page/Party systems. Two Page/Party system cable segments connect through two,
line extenders using either a two-pair copper cable or fiber optic cable, depending on the distance
requirement. The local and remote cable segments are electrically isolated through the line extenders (see
Figure 1 for a typical block diagram).
Figure 1. Typical System Block Diagram

Pub. 42004-735L2E
LE300 Series Wall Mount Line Extenders Page 2 of 55
10/23
Features
The Model LE300 Series Page/Party Line Extenders provide the following features between Page/Party
system cables:
•Page Line Audio Transmission—provides half-duplex page line audio transmission between two
Page/Party system cables.
•Page Line Audio Monitoring Output—provides a balanced 600-ohm audio output for both the local
and remote page lines.
•Page Line Audio Detect Output Contact—activates a contact closure whenever audio is detected on
the page line.
•Page Line FSK Data Transmission (SmartSeries Systems)—re-generates FSK (frequency shift
keying) data transmissions between two SmartSeries Page/Party system cables.
•Page Line 50 kHz VLC Transmission—re-generates the 50 kHz VLC (volume level control)
signals between two Page/Party system cables.
•Page Line Ground Fault Detection—detects ground faults on the page line of the local Page/Party
system cable.
•Page Line Ground Fault Re-generation—duplicates local Page/Party system cable ground faults to
remote LE300 line extenders.
•Page Line Ground Fault Output Contact—activates a relay contact whenever a ground fault is
detected on the local page line, remote page line, or both page lines.
•Party Line Audio Transmission—provides full duplex party line audio between two Page/Party
system cables for party lines one through five.
•Party Line Off-Hook Detection—provides off-hook detection on the local Page/Party system cable
for party lines one through five.
•Party Line Off-Hook Regeneration—transmits the off-hook condition to remote line extenders
when an off-hook handset station is detected.
•Audio Line Connection Relays—enables disconnection of the page line, party lines one through
five, and/or the page monitoring output connections from the main PCBA.
•Audio Line Muting—enables muting the page line and party lines one through five when they are
not physically connected to the line extender.
•Page/Party Line Balance—sets the line balance resistance on the page line and each of the five party
lines.
•Five Contact Closure Inputs and Relay Outputs (I/O)—enables activation of a remote line
extender output contact when the associated input contact on the local line extender activates.
•Echo Cancellation—performs an echo cancellation sequence on party lines one through five.
Line Extender and Sub-Component Details
Refer to Figure 2, Figure 3, and Figure 4 below for dimensional information and sub-component layout of
the Model LE300 Series Line Extenders.

Pub. 42004-735L2E
LE300 Series Wall Mount Line Extenders Page 3 of 55
10/23
Figure 2. Model LE300 Series Outline

Pub. 42004-735L2E
LE300 Series Wall Mount Line Extenders Page 4 of 55
10/23
Model LE300
Figure 3. Interior Component View—Model LE300
Models LE300-MM, LE300-MM1, LE300-SM, and LE300-SM1
Figure 4. Interior Component View—Models LE300-MM, -MM1, -SM, and -SM1

Pub. 42004-735L2E
LE300 Series Wall Mount Line Extenders Page 5 of 55
10/23
Models LE300-MM2 and LE300-SM2
iConverter
1-Module Power Chassis
OmnitronSystems
T ech no log y, In c.
OST
Figure 5. Interior Component View—Models LE300-MM2 and -SM2
Audio Termination Connection Module
The conductors of the page line and party lines one through five of the Page/Party system cable connect to
the audio termination audio connection module. This board can also provide 33-ohm line balance
resistance required for the audio lines (see the Audio Functions section for information on the audio line
features).
Figure 6. Audio Termination Connection Module

Pub. 42004-735L2E
LE300 Series Wall Mount Line Extenders Page 6 of 55
10/23
Input/Output (I/O) Termination Connection Module
The I/O termination connection module connects the control wiring needed to send contact closures
across the line extenders. Contact inputs are typically connected to switches or mechanical relay contacts.
Contact outputs are typically used to switch power to signaling devices such as beacons or strobes (see
the Audio Functions section for information on the audio line features).
Figure 7. Input/Output (I/O) Connection Module

Pub. 42004-735L2E
LE300 Series Wall Mount Line Extenders Page 7 of 55
10/23
Main PCBA
The Main PCBA contains all the central processing and line driver circuitry for the line extender. The
board contains numerous connectors, indicators, jumpers, and switches for setting the line extender
operating parameters (see Figure 8). Features and functions of each component are described later in this
manual.
Figure 8. 69443-xxx Main PCBA

Pub. 42004-735L2E
LE300 Series Wall Mount Line Extenders Page 8 of 55
10/23
Installation
ATTENTION
—Installation shall be performed by qualified service personnel in accordance
with the National Electrical Code or applicable local codes.
Mounting
1. Use a screwdriver to unlock the front door of the enclosure by rotating the lock a quarter turn
counterclockwise, then open the front door.
2. Install the external mounting feet supplied with the enclosure prior to mounting the line extender to
the wall or other mounting surface.
1. Use the provided sealing washers to ensure proper sealing and enclosure protection rating.
2. Install the sealing washers inside the enclosure with the tapered cone against the enclosure and
then add the flat washers.
3. If removing the rear component panel to install the mounting feet:
1. Disconnect the ribbon cables and the ground wire connections from the rear panel.
2. Remove the four nuts that hold the panel in place and set the panel assembly and the nuts aside in
a safe location.
3. Reinstall the panel after the mounting feet are bolted to the enclosure.
4. Reconnect the ribbon cables and ground wire connections from the rear panel.
4. Position the enclosure on the mounting surface and secure it with four 3/8-inch diameter bolts of the
appropriate lengths for the mounting surface (see Figure 2 for the enclosure and mounting
dimensions).
5. Drill or punch cable entries into the cabinet at the required locations.
NOTE:Bottom conduit/cable entry is recommended for outdoor installations or in uncontrolled
temperature/humidity areas.
Use conduit hubs or cable glands equipped with an O-ring to prevent entry of dust or moisture.
6. Pull the cables into the enclosure.
7. Make all wiring connections (see the Wiring section).
8. Configure the line extender for audio functions and data links (See the Configuration section).
9. Complete the installation by closing the front door and locking the enclosure.
Wiring
Pressure-type terminal blocks are provided inside the LE300 for connecting the incoming field wiring.
The terminal blocks accept wire sizes from No. 24 AWG to No. 12 AWG. Crimp ferrules onto the end of
each wire before connection to the terminal block to ensure a reliable termination.
Power Connections
1. Connect the 120/240 V ac at 50/60 Hz input-power line and neutral conductors to the double-pole
circuit breaker (see Figure 3 or Figure 4).
2. Connect the ground wire to the ground bar.

Pub. 42004-735L2E
LE300 Series Wall Mount Line Extenders Page 9 of 55
10/23
Page/Party System Cable Connection
Connect the audio conductors (page line and party lines one through five) of the Page/Party system cable
to either P5 or P8 on the audio termination board (see Figure 6). Each connection point is labeled next to
the terminal block as shown below.
Figure 9. Page/Party Cable Terminals
When using GAI-Tronics 60029 Series system cable, follow the wiring color codes in the following table:
Table 1. Color Codes for GAI-Tronics 60029 Series System Cable
Terminal Designator GTC System Cable
Color Code Description
P5-1/P8-1 PAGE—L1 Red/Blue
Page Line audio
P5-2/P8-2 PAGE—L2 Blue/Red
P5-3/P8-3 PARTY 1—L1 Red
Party Line 1 audio
P5-4/P8-4 PARTY 1—L2 Tan/red
P5-5/P8-5 PARTY 2—L1 Violet
Party Line 2 audio
P5-6/P8-6 PARTY 2—L2 Tan/violet
P5-7/P8-7 PARTY 3—L1 Blue
Party Line 3 audio
P5-8/P8-8 PARTY 3—L2 Tan/blue
P5-9/P8-9 PARTY 4—L1 Brown
Party Line 4 audio
P5-10/P8-10 PARTY 4—L2 Tan/brown
P5-11/P8-11 PARTY 5—L1 Yellow
Party Line 5 audio
P5-12/P8-12 PARTY 5—L2 Tan/yellow

Pub. 42004-735L2E
LE300 Series Wall Mount Line Extenders Page 10 of 55
10/23
T1/E1 Data Connections
A 2-pair cable is required for the T1/E1 data line connection
between line extenders.
1. Terminate the T1/E1 data cable to P19 on the main
PCBA (see Figure 8).
2. Connect the transmit (TX) and receive (RX) pairs
between the line extenders in a cross-over fashion so
that the TX terminals of line extender one are connected
to the RX terminals of line extender two and vice-versa.
Each data cable connection point is labeled next to
terminal block P19 (see Figure 10).
Table 2. T1/E1 Data Connections
Terminal Designator Description
P19-1 TX RING
Data TRANSMIT wire pair
P19-2 TX TIP
P19-3 RX RING
Data RECEIVE wire pair
P19-4 RX TIP
NOTE —Do not connect the TX (transmit) signal to the RX (receive) signal on the same line
extender. Doing so creates a feedback path that usually results in extremely loud
oscillations on the page line and the party lines. The contact outputs may also
activate.
Contact Closure Input Connections
Five input contacts are available. Each input contact requires two conductors.
1. Connect the normally open contact across the top and bottom terminals.
2. Observe proper polarity of the connection, (−) on bottom, (+) on top, when using solid state switches
for input devices.
Each input cable connection point is labeled next to the terminal block TB8 and TB9 as shown
below.
Figure 11. Input Contact Terminals
Figure 10. Data Line Terminals

Pub. 42004-735L2E
LE300 Series Wall Mount Line Extenders Page 11 of 55
10/23
Table 3. Contact Closure Input Connections
Terminal Designator Description
TB8 INPUT 1(+)
Input contact 1
TB8 INPUT 1(−)
TB8 INPUT 2(+)
Input contact 2
TB8 INPUT 2(−)
TB8 INPUT 3(+)
Input contact 3
TB8 INPUT 3(−)
TB9 INPUT 4(+)
Input contact 4
TB9 INPUT 4(−)
TB9 INPUT 5(+)
Input contact 5
TB9 INPUT 5(−)
Contact Closure Output Connections
The line extenders provide seven relay outputs. Each relay output provides two contact sets, and each
contact set consists of NO (normally open), C (common), and NC (normally closed) contacts.
•Outputs one through five activate by inputs one through five on the remote line extender.
•Output six is active during audio detection on the page line.
•Output seven is active when a page line ground fault is detected.
Terminals are provided for each relay contact and have labels with the relay contact description, next to
the terminal block, TB1–TB7, as shown below.
Figure 12. Relay Output Terminals

Pub. 42004-735L2E
LE300 Series Wall Mount Line Extenders Page 12 of 55
10/23
Table 4. Contact Closure Output Connections
Terminal
Designator
Description
TB1 (Top)
NC
Output 1—contact #1
COM
NO
TB1 (Bottom)
NC
Output 1—contact #2
COM
NO
TB2 (Top)
NC
Output 2—contact #1
COM
NO
TB2 (Bottom)
NC
Output 2—contact #2
COM
NO
TB3 (Top)
NC
Output 3—contact #1
COM
NO
TB3 (Bottom)
NC
Output 3—contact #2
COM
NO
TB4 (Top)
NC
Output 4—contact #1
COM
NO
TB4 (Bottom)
NC
Output 4—contact #2
COM
NO
TB5 (Top)
NC
Output 5—contact #1
COM
NO
TB5 (Bottom)
NC
Output 5—contact #2
COM
NO
TB6 (Top)
NC
Page Line Audio—contact #1
COM
NO
TB6 (Bottom)
NC
Page Line Audio—contact #2
COM
NO
TB7 (Top)
NC
Page Line Ground Fault—contact #1
COM
NO
TB7 (Bottom)
NC
Page Line Ground Fault—contact #2
COM
NO

Pub. 42004-735L2E
LE300 Series Wall Mount Line Extenders Page 13 of 55
10/23
Page Line Audio Monitoring Connections
The Model LE300 provides a balanced 600-ohm audio output for monitoring audio on both the local and
remote page lines.
Connect external audio input devices (audio recorder, radio transmitter, amplifier, etc.) to the audio line
monitoring terminals using twisted pair cable.
The input impedance of the audio device must be 600 ohms or greater.
Terminals are located at connector P16 on the main PCBA and are labeled (see Table 5).
Table 5. Page Line Audio Monitoring Connections
Terminal Designator Description
P16-1 PG MON L2 Page line monitor audio output (L2)
P16-2 −No connection
P16-3 PG MON L1 Page line monitor audio output (L1)
Fiber Optic Cable Connections
Model LE300-MM, LE300-SM, LE300-MM1, LE300-SM1, LE300-MM2, and LE300-SM2 line
extenders contain a T1/E1 fiber optic transceiver (see Figure 13) (see note).
N OTE :The T1/E1 fiber optic transceivers in the LE300-MM2 and LE300-SM2 differ from all previous
versions (see Figure 14).
Figure 13. T1/E1 Fiber Optic Transceiver for LE300-MM, -MM1, -SM and -SM1 (top view)

Pub. 42004-735L2E
LE300 Series Wall Mount Line Extenders Page 14 of 55
10/23
iConverter
1-Module Power Chassis
Omnitron Systems
Technology, Inc.
OST
Figure 14. T1/E1 Fiber Optic Transceiver for LE300-MM2 and -SM2 (top view)
• Models LE300-MM, LE300-MM1 and LE300-MM2 require multi-mode fiber optic cables.
• Models LE300-SM, LE300-SM1 and LE300-SM2 require single-mode fiber optic cables.
• All models require ST-type fiber connector termination.
1.
Terminate the fiber optic cable with ST-type connectors.
2.
Connect the fiber optic cables between the line extenders in a cross-over fashion (see Figure 15).
1. Connect the XMIT (Transmit) port of line extender one to the RCV (Receive) port of line
extender two.
2.
Connect the RCV (Receive) port of line extender one to the XMIT (Transmit) port of line
extender two.

Pub. 42004-735L2E
LE300 Series Wall Mount Line Extenders Page 15 of 55
10/23
Figure 15. Fiber Optic Cable Connection
Fiber Optic Transceiver Set-Up (Models LE300-MM and LE300-SM)
The fiber optic transceivers contain two DIP switches. The switches are factory set for proper operation
(see Figure 16).
Replacement modules will need to be configured to match the original factory settings:
3.
Loosen the screw and pull the transceiver module out.
4.
Remove the module from the chassis to access the switches.
5.
Configure the DIP switches.
Figure 16. DIP Switches on Fiber Optic Transceiver (LE300-MM or LE300-SM only)