GAI-Tronics LE300, LE300-MM, LE300-SM, LE300-MM1, LE300-SM1 User Manual
Pub. 42004-735L2D
GAI-TRONICS®
A HU BBEL L CO MPANY
Model LE300 Series Wall-Mount
Page/Party
Line Extenders
T ABLE OF C ONTENTS
Confidentiality Notice .....................................................................................................................1
General Information .......................................................................................................................1
®
Line Extender and Sub-Component Details ......................................................................................... 2
Model LE300 ........................................................................................................................................................ 3
Model LE300-MM, LE300-SM, LE300-MM1, and LE300-SM1 ........................................................................ 3
Audio Termination Connection Module ............................................................................................................... 4
Input/Output (I/O) Termination Connection Module ............................................................................................ 4
Main PCBA........................................................................................................................................................... 5
Features and Functions ..................................................................................................................6
Page Line Audio Transmission .............................................................................................................. 6
Page Line Audio Monitoring Output .................................................................................................... 7
Page Line Audio Detect Output Contact .............................................................................................. 8
Page Line FSK Data Transmission (SmartSeries Systems) ................................................................ 8
Page Line 50 kHz VLC Transmission ................................................................................................... 9
Page Line Ground Fault Detection ........................................................................................................ 9
Page Line Ground Fault Re-generation .............................................................................................. 10
Page Line Ground Fault Output Contact ........................................................................................... 10
Party Line Audio Transmission ........................................................................................................... 11
Party Line Off-Hook Detection ............................................................................................................ 11
Party Line Off-Hook Regeneration ..................................................................................................... 12
Audio Line Connection Relays ............................................................................................................ 13
Audio Line Muting ................................................................................................................................ 13
®
Page/Party
Contact Closure Inputs & Relay Outputs (I/O) ................................................................................. 15
Echo Cancellation ................................................................................................................................. 16
Manual Initiation of Echo Canceling .................................................................................................................. 16
Line Balance ..................................................................................................................... 14
Data Links between Line Extenders .............................................................................................16
T1/E1 Data Link .................................................................................................................................... 17
Low Voltage Differential Signaling (LVDS) Data Link ..................................................................... 17
GAI-TRONICS 3030 KUTZTOWN RD. READING, PA 19605 USA
610-777-1374 800-492-1212 Fax: 610-796-5954
VISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
Table of Contents Pub. 42004-735L2D
ODEL LE300 SERIES WALL-MOUNT PAGE/PARTY® LINE EXTENDERS
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Configuring the Data Links ................................................................................................................. 18
T1/E1 Data Format Selection .............................................................................................................................. 18
T1 Line Build-out Settings .................................................................................................................................. 18
T1/E1 Receiver Equalization Gain Limit ............................................................................................................ 19
T1/E1 Clock Source ............................................................................................................................................ 19
T1/E1 Data Line Grounding ............................................................................................................................... 20
LVDS Data Link Settings ................................................................................................................................... 20
LVDS Port Indicators ......................................................................................................................................... 21
Typical Data Link Settings ................................................................................................................... 21
Point-to-Point Page/Party® System Connection .................................................................................................. 21
Point to Multi-point Page/Party® System Connection ........................................................................................ 22
Series Connection of Page/Party® System .......................................................................................................... 23
Rules for Interconnecting More than Two Model LE300s ................................................................................. 24
Installation ....................................................................................................................................26
Mounting ................................................................................................................................................ 26
Wiring .................................................................................................................................................... 27
Power Connections ............................................................................................................................................. 27
Page/Party® System Cable Connection ............................................................................................................... 27
T1/E1 Data Connections ..................................................................................................................................... 28
Contact Closure Input Connections .................................................................................................................... 29
Contact Closure Output Connections .................................................................................................................. 30
Page Line Audio Monitoring Connections ......................................................................................................... 32
Verifying the Proper Line Balance Resistance ................................................................................................... 32
Distributing Line Balance Resistance ................................................................................................................. 33
Fiber Optic Cable Connections ............................................................................................................ 34
Fiber Optic Transceiver Set-Up (Models LE300-MM, LE300-SM, LE300-MM1, and LE300-
SM1) ....................................................................................................................................................... 35
Verification of Proper Operation ........................................................................................................................ 36
Summary of PC Board Connections and Settings .......................................................................38
Recording the Settings ..................................................................................................................42
Testing and Troubleshooting ........................................................................................................45
Generating Audio Test Signals ............................................................................................................ 45
Function Testing.................................................................................................................................... 46
Specifications ................................................................................................................................47
Replacement Parts ................................................................................................................................ 52
Frequently Asked Questions .........................................................................................................53
GAI-TRONICS 3030 KUTZTOWN RD. READING, PA 19605 USA
610-777-1374 800-492-1212 Fax: 610-796-5954
VISIT WWW.GAI-TRONICS.COM FOR P
ii
RODUCT LITERATURE AND MANUALS
PUB. 42004-735L2D
GAI-TRONICS®
A HU BBEL L CO MPANY
Model LE300 Series Wall-Mount
Page/Party
®
Line Extenders
Confidential ity Notice
This manual is provided solely as an operation, installation, and maintenance guide and 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, and such
information may only be used in connection with the operation of your GAI-Tronics product or system.
This manual may not be disclosed in any form, in whole or in part, directly or indirectly, to any third party.
General Information
The Model LE300 Series Line Extenders are used in pairs to extend the operating distance of Page/Party®,
SmartSeries or ICS Page/Party
extender using either a 2-pair copper cable or fiber optic cable depending on the distance required. The
local and remote cable segments are electrically isolated through the line extenders. Refer to Figure 1 for a
typical block diagram.
®
systems. Two system cable segments are connected through the line
GAI-TRONICS 3030 KUTZTOWN RD. READING, PA 19605 USA
610-777-1374 800-492-1212 Fax: 610-796-5954
VISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
re 1. Typical System Block Diagram
Figu
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Line Extender and Sub-Component Details
Refer to Figure 2 through Figure 4 below for dimensional information and sub-component layout of the
LE300 Series Line Extenders.
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ure 2. Model LE300 Series Outline
Fig
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Model LE300
ure 3. Interior View of Components - Model LE300
Fig
Model LE300-MM, LE300-SM, LE300-MM1, and LE300-SM1
ure 4. Interior View of Components - Models LE300-XXX
Fig
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Audio Termination Connection Module
The page line and party line 1–5 conductors of the Page/Party® system cable connect to the audio
termination audio connection module. This board also can provide the 33-ohm line balance resistance
needed for the audio lines. Audio line functions are described later in this manual.
Figure 5. Audio Termination Connection Module
Input/Output (I/O) Termination Connection Module
The I/O Termination Connection Module is for connecting the control wiring needed to send contact
closures across the line extenders. I/O features and functions are described later in this manual.
Figure 6. Input/Output (I/O) Connection Module
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Main PCBA
The Main PCBA contains all the central processing and line driver circuitry for the line extender. The
board contains numerous connectors, switches and jumpers for setting the line extender operating
parameters. Figure 7 below identifies the various components on the main PCBA. Features and functions
of each component are described later in this manual.
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Figure 7. 69443-xxx Main PCBA
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Fea tures and Functions
The Model LE300 Series Page/Party® Line Extenders provide the following features between Page/Party®
system cables.
Page Line Audio Transmission
A pair of Model LE300s provides page line audio transmission between two Page/Party® system cables.
This transmission is half-duplex operation.
When the line extender detects a peak audio level equal or to or above the
Threshold
Time.
, it immediately switches audio “on” in that direction for the Transmission Direction Hold
Audio from the other direction is muted and ignored during that time. Audio is not switched “off”
Peak Voltage Level Detection
until it is continuously below the Peak Voltage Level Detection Threshold for the Transmission Direction
Hold Time. The DIP switch SW2 positions 5-7, located on the main PCBA, selects Peak Voltage Level
Detection Threshold and Transmission Direction Hold Time. Refer to Figure 7 for the location of switch
SW2 on the main PCBA and the tables below for setting this option.
Table 1. Transmission Direction Hold Time Settings on Main PCBA
SW2-5 SW2-6 Transmission Direction Hold Time
Open* Open * 1280 milliseconds
Closed Open 640 milliseconds
Open Closed 160 milliseconds
Closed Closed 40 milliseconds
NOTES: 1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.
Table 2. Peak Voltage Level Detection Threshold on Main PCBA
SW2-7 Peak Voltage Level Detection Threshold
Open* −12 dB relative to nominal
Closed −24 dB relative to nominal
NOTES: 1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.
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Page Line Audio Monitoring Output
The Model LE300 provides a balanced 600-ohm audio output for monitoring audio on both the local and
remote page lines. The LE300 mixes the local and remote page line audio and routes it to the 600-ohm
audio output terminals. This audio can be sent to any external audio device (recorder, radio transmitter,
amplifier, etc.) with an input impedance equal to or greater than 600 ohms. The audio output gain is
adjustable using DIP switch SW3 positions five through eight on the main PCBA. Refer to Figure 7 for
the location of switch SW3 on the main PCBA and the tables below for setting options.
Table 3. Page Line Monitor Output Gain Setting on Main PCBA
Monitor Output
SW3-5 SW3-6 SW3-7 SW3-8
Open* Open* Open* Open* 0 dB
Closed Open Open Open −30 dB
Open Closed Open Open −27 dB
Closed Closed Open Open −24 dB
Gain
Open Open Closed Open −21 dB
Closed Open Closed Open −18 dB
Open Closed Closed Open −15 dB
Closed Closed Closed Open −12 dB
Open Open Open Closed −9 dB
Closed Open Open Closed −6 dB
Open Closed Open Closed −3 dB
Closed Closed Open Closed 0 dB
Open Open Closed Closed +3 dB
Closed Open Closed Closed +6 dB
Open Closed Closed Closed +9 dB
Closed Closed Closed Closed +12 dB
NOTES: 1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.
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Page Line Audio Detect Output Contact
The Model LE300 provides a contact closure output that activates whenever audio is detected on the page
line. The contact can be set to close when audio is detected at the local page line, the remote page line, or
both. Typically this contact is used in conjunction with the page line audio monitoring output to provide a
control contact to external devices or systems when page line audio is present. The contact remains active
for one second after the audio is no longer detected. DIP switch SW5 positions six and seven enables or
disables the output contact. Refer to Figure 7 for the location of switch SW5 on the main PCBA and the
table below for setting this option.
Table 4. Page Line Audio Detect Contact Main PCBA
SW5-6 SW5-7 Audio Detect Contact Operati on
Closed Closed Disabled
Open Closed Local page line audio activates the contact
Closed Open Remote page line audio activates the contact
Open* Open* Both Local and Remote page line audio activates the contact
NOTES: 1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.
Page Line FSK Data Transmission (SmartSeries System s)
A pair of Model LE300 Line Extenders re-generates the FSK data transmission between two SmartSeries
Page/Party
Page/Party stations to communicate with the system control cabinet. For proper operation, both line
extenders must have this feature enabled by setting DIP switch SW5 position one. Refer to Figure 7 for
the location of switch SW5 on the main PCBA and the table below for setting this option.
NOTES: 1. Changes to this parameter take effect without cycling power.
OTE: FSK operation and VLC operation (described below) cannot be enabled at the same time.
N
FSK operation is only used with SmartSeries systems.
VLC operation is only used within NON-SmartSeries systems. If both 50 VLC and FSK are enabled
at the same time, neither feature will funct ion corre ctly.
®
system cables. FSK data transmission occurs on the page line allowing SmartSeries
Table 5. Page Line FSK Transmission on Main PCBA
SW5-1 Page Line FSK Transmission
Open* FSK data is disabled.
Closed FSK data is enabled.
2. *Indicates default position.
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Page Line 50 kHz VLC Transmission
A pair of Model LE300 Line Extenders re-generates the 50 kHz VLC control signal between two
Page/Party
speaker volume of Page/Party
on/off control functions on some Page/Party
®
system cables. 50 kHz VLC signaling occurs on the page line and is typically used to alter the
®
stations equipped VLC receivers. VLC signals may also be used for other
®
systems. For proper operation, both line extenders must
have this feature enabled by closing DIP switch SW5 position two. Refer to Figure 7 for the location of
switch SW5 on the main PCBA and the table below for setting options.
Table 6. Page Line 50 kHz VLC Transmission Setting on Main PCBA
SW5-2 Page Line 50 kHz VLC Transmission
Open* 50 kHz VLC is disabled
Closed 50 kHz VLC is enabled
NOTES: 1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.
OTE: FSK operation and VLC operation (described above) cannot be enabled at the same time.
N
FSK operation is only used with SmartSeries systems.
VLC operation is only used within NON-SmartSeries systems. If both 50 VLC and FSK are enabled
at the same time, neither feature will funct ion corre ctly.
Page Line Ground Fault Detection
The Model LE300 Line Extenders provide page line ground fault detection on the local Page/Party®
system cable. If multiple LE300s are connected to the same Page/Party
®
system cable segment, only one
page line ground fault detector may be enabled. A shorting clip setting at header P5 on the main PCBA
enables the page line ground fault detection. Refer to Figure 7 for the location of header P5 on the main
PCBA and the table below for setting options:
Table 7. Page Line Ground Fault Detection Setting on Main PCBA
P5 Shorting Clip Page Line Ground Fault Detection
Pins 1–2* Page line ground fault detection is disabled.
Pins 2–3 Page line ground fault detection is enabled.
Removed Page line ground fault detection is disabled.
NOTES:
®
1. If connecting an LE300 to the same system cable segment as an ADVANCE Page/Party
Interface
(PPI) card, disable the LE300 page line ground fault detector. The PPI card contains the ground fault
detector. If both ground fault circuits are enabled simultaneously, intermittent SmartSeries FSK data
errors will occur between the PPI card and SmartSeries stations.
2. Changes to this parameter take effect without cycling power.
3. *Indicates default position.
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Page Line Ground Fault Re-generation
When a ground fault is detected at a remote LE300 line extender, the ground fault can be duplicated on the
local Page/Party
®
system cable. DIP switch SW5 position 3 enables regeneration of the ground fault.
Refer to Figure 7 for the location of switch SW5 on the main PCBA and the table below for setting this
option.
Table 8. Page Line Ground Fault Regeneration Setting on Main PCBA
SW5-3 Page Line Groun d Fault Regeneration
Open* Disabled – Page line ground faults detected on the remote system cable are NOT
regenerated on the local system cable.
Closed Enabled – Page line ground faults detected on the remote system cable are regenerated on
the local system cable.
NOTES:
1. The ground fault regeneration feature is used in SmartSeries systems to allow a ground fault on the
remote cable segment to be detected by the system control cabinet. Disable this feature if the line
extender is not installed in this type system.
2. Changes to this parameter take effect without cycling power.
3. *Indicates default position.
Page Line Ground Fault Output Contact
The Model LE300 provides a relay contact that activates whenever a ground fault is detected on the local
page line, remote page line or both the page lines. The ground fault detection feature (described above)
must be enabled. The contact output can be used to activate an external device or system which
annunciates the fault condition. The DIP switch SW5 positions four and five configure which page line
ground faults activate this contact. Refer to Figure 7 for the location of switch SW5 on the main PCBA
and the table below for setting this option.
Table 9. Page Line Ground Fault Contact Setting on Main PCBA
SW5-4 SW5-5 Page Line Ground Fault Contact
Closed Closed Disabled
Closed Open Remote page line ground fault activates the contact.
Open Closed Local page line ground fault activates the contact.
Open* Open* Both Local and Remote page line ground faults activate the contact.
NOTES: 1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.
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Party Line Audio Transmission
A pair of Model LE300 Line Extenders provides full duplex party line audio between two Page/Party®
system cables, for party lines one through five. During on-hook conditions of the party lines (meaning no
handset stations are in-use), the LE300 will mute the local party line analog circuits. If it is necessary to
have party line audio enabled even when no stations are off-hook, DIP switch SW6-3 may be closed to
disable this muting feature. This switch affects the on-hook muting function of all five party lines
simultaneously. Refer to Figure 7 for the location of switch SW6 on the main PCBA and the table below
for setting this option.
Table 10. Party Line On-Hook Muting Setting on Main PCBA
SW6-3 Party Line On-H ook Muting
Open* Enabled – local party lines are muted when no handset stations are in-use.
Closed Disabled – party line audio is never muted.
NOTES: 1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.
Party Line Off-Hook Detection
The Model LE300 Line Extenders provide off-hook detection on the local Page/Party® system cable for
party lines one through five. An off-hook condition means a handset station is in use. If multiple line
extenders are connected to the same Page/Party
enabled. If connecting an LE300 to the same system cable segment as an ADVANCE Page/Party
Interface (PPI) card, disable the LE300 off-hook detection for party lines one and two. The PPI card
contains off-hook detection for party lines one and two.
Several shorting clips (P6–P15) are used to enable the off-hook detection feature on party line one through
five. Two shorting clips are associated with each party line and must be set to the same position for proper
operation. Party lines one through five are configured independently. Refer to Figure 7 for the location of
P6–P15 on the main PCBA and the table below for setting this option.
®
system cable segment, only one off-hook detector can be
®
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Table 11. Party Line Off-Hook Detection Setting on Main PCBA
Party Line He aders Shorting Clip Off-Hook Dete ction
Pins 1–2* Disabled
Party Line 1 P15, P14
Pins 2–3 Enabled
Removed Disabled
Pins 1–2* Disabled
Party Line 2 P13, P12
Pins 2–3 Enabled
Removed Disabled
Pins 1–2* Disabled
Party Line 3 P11, P10
Pins 2–3 Enabled
Removed Disabled
Pins 1–2* Disabled
Party Line 4 P9, P8
Pins 2–3 Enabled
Removed Disabled
Pins 1–2* Disabled
Party Line 5 P7, P6
Pins 2–3 Enabled
Removed Disabled
NOTES: 1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.
Party Line Off-Hook Regeneration
When an off-hook handset station is detected, the LE300 can transmit the off-hook condition to remote
line extenders so that it is duplicated on the remote Page/Party
used in systems that contain a telephone interface device so that the caller is transferred to the party line
when a handset station answers the call. DIP switch SW6 position two is used to enable this feature. This
switch affects the off-hook regeneration function of all five party lines. Refer to Figure 7 for the location
SW6 on the main PCBA and the table below for setting this option.
Table 12. Off-Hook Regeneration on Main PCBA
SW6-2 Off-Hook Regeneration Setting
Open* Enabled – an off hook condition on the local party line is regenerated at the
remote line extender.
Closed Disabled
NOTES: 1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.
®
system cable. Typically this feature is
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Audio Line Connection Relays
The Model LE300 has relays that disconnect the page line, party lines one through five and the page
monitoring output connections from the main PCBA. The disconnect feature is used for special
applications such as connection of a single party line system or other scenarios in which a particular audio
line is not physically connected to the line extender. DIP switch SW4 is used to control the audio line
disconnect feature. Refer to Figure 7 for the location of SW4 on the main PCBA and the table below for
setting this option.
Table 13. Audio Line Connection Relay Settings on Main PCBA
Audio Line Switch SW4 Setting Field Wiring
Party Line 5 SW4-1
Party Line 4 SW4-2
Party Line 3 SW4-3
Party Line 2 SW4-4
Party Line 1 SW4-5
Page Line SW4-6
Page Monitor SW4-7
N/A SW4-8
Open Disconnected
Closed* Connected
Open Disconnected
Closed* Connected
Open Disconnected
Closed* Connected
Open Disconnected
Closed* Connected
Open Disconnected
Closed* Connected
Open Disconnected
Closed* Connected
Open Disconnected
Closed* Connected
Open
Not used.
Closed*
NOTES: 1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.
Audio Line Muting
In some system configurations, the Page/Party® system cable is not connected to the line extender. In this
case, all audio lines (page and party lines 1–5) should be muted since they are not physically connected.
DIP switch SW6 position 4 on the Main PCBA enables this feature. If this feature is enabled, it is
unnecessary to disconnect the audio lines using the audio line relays (mentioned above). Refer to Figure 7
for the location of SW6 on the Main PCBA and the table below for setting options.
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Table 14. Audio Line Mute Setting on Main PCBA
SW6-4 Mute Analog Lines Setting
Open* Disabled - Party lines 1–5 and page line are operational.
Closed Enabled - Party lines 1–5 and page line are muted.
NOTES: 1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.
Page/Party® Line Balance
For proper system operation, the page line and party lines 1–5 must be terminated with a resistance of
approximately 33 ohms. The Model LE300 provides potentiometers to set the line balance resistance on
the page line and five party lines. The line balance resistors are located on the Audio Termination
Connection Module next to the page and party line terminal blocks. The line balance resistors are
adjustable or can be disabled using shorting clips P1–P7.
®
If connecting an LE300 to the same system cable segment as an ADVANCE Page/Party
card, disable the line balance for party lines 1, 2 and the page line. The PPI card provides the line balance
resistors for these audio lines. Refer to Figure 3 or Figure 4 for the location of the Audio Termination
Audio Connection Module. Refer to Figure 5 for the location of the jumpers and potentiometers on the
Audio Termination PBCA and the table below for setting details.
Interface (PPI)
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Table 15. Page/Party® Line Balance Settings on Audio Termination Connection Module
Audio Line Header Shorting Clip Line Bala nce Adjustment
Potentiometer
Pins 1–2* Disabled
Party Line 5 P6
Party Line 4 P3
Party Line 3 P1
Party Line 2 P2
Party Line 1 P4
R23 Pins 2–3 Enabled
Removed Disabled
Pins 1–2* Disabled
R19 Pins 2–3 Enabled
Removed Disabled
Pins 1–2* Disabled
R3 Pins 2–3 Enabled
Removed Disabled
Pins 1–2* Disabled
R4 Pins 2–3 Enabled
Removed Disabled
Pins 1–2* Disabled
R20 Pins 2–3 Enabled
Removed Disabled
Pins 1–2* Disabled
Page Line P7
R24 Pins 2–3 Enabled
Removed Disabled
NOTES: *Indicates default position.
Contact Closure Inputs & Relay Outputs (I/O)
Five independent contact closures can be transmitted across a pair of Line Extenders meaning that an
active input contact on the local Line Extender results in the corresponding output relay contact energizing
on the remote Line Extender. Contact closures are bi-directional.
Example: Closing a switch contact across input #1 of the local Line Extender results in relay output #1
activating on the remote Line Extender and vice versa. When the input contact is removed the
corresponding output relay de-activates. No switch or jumper setting is required on the Main PCBA for
configuring the I/O feature.
OTE: Any active output contacts will deactivate if the data link is broken between the Line Extenders.
N
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