Table of Contents
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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
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Line Balance ..................................................................................................................... 14
Contact Closure Inputs & Relay Outputs (I/O) ................................................................................. 15
Echo Cancellation ................................................................................................................................. 16
Manual Initiation of Echo Canceling .................................................................................................................. 16
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
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Pub. 42004-735L2D
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Related Manuals for GAI-Tronics LE300
Summary of Contents for GAI-Tronics LE300
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Page 1: Table Of Contents
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 ... - Page 2 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 ...
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Page 3: Gai - Tronics
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 systems. -
Page 4: Line Extender And Sub-Component Details
XTENDERS 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. Figure 2. Model LE300 Series Outline p:\standard ioms - current release\42004 instr. manuals\42004-735l2d.doc 02/16... -
Page 5: Model Le300
Page 3 of 53 ODEL ERIES OUNT ARTY XTENDERS Model LE300 Figure 3. Interior View of Components - Model LE300 Model LE300-MM, LE300-SM, LE300-MM1, and LE300-SM1 Figure 4. Interior View of Components - Models LE300-XXX p:\standard ioms - current release\42004 instr. manuals\42004-735l2d.doc 02/16... -
Page 6: Audio Termination Connection Module
Pub. 42004-735L2D ® LE300 S Page 4 of 53 ODEL ERIES OUNT ARTY XTENDERS 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. -
Page 7: Main Pcba
Pub. 42004-735L2D ® LE300 S Page 5 of 53 ODEL ERIES OUNT ARTY XTENDERS 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. -
Page 8: Features And Functions
ARTY XTENDERS Features 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. -
Page 9: 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. -
Page 10: Page Line Audio Detect Output Contact
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. -
Page 11: Page Line 50 Khz Vlc Transmission
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. -
Page 12: Page Line Ground Fault Re-Generation
ARTY XTENDERS 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. -
Page 13: Party Line Audio Transmission
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. -
Page 14: Party Line Off-Hook Regeneration
OTES 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 system cable. Typically this feature is 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. -
Page 15: Audio Line Connection Relays
XTENDERS 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. -
Page 16: 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. -
Page 17: Contact Closure Inputs & Relay Outputs (I/O)
Pub. 42004-735L2D ® LE300 S Page 15 of 53 ODEL ERIES OUNT ARTY XTENDERS Table 15. Page/Party® Line Balance Settings on Audio Termination Connection Module Audio Line Header Shorting Clip Line Balance Adjustment Potentiometer Pins 1–2* Disabled Party Line 5 Pins 2–3... -
Page 18: Echo Cancellation
To minimize echo, the Model LE300 performs an echo cancellation sequence on party lines 1 through 5. The echo cancellation process takes approximately 15 seconds and is performed automatically one minute after power is applied to the LE300. This delay allows all power levels to stabilize prior to performing echo cancellation. -
Page 19: T1/E1 Data Link
XTENDERS T1/E1 Data Link The T1/E1 data link connection is the most common and is used when one pair of Model LE300 line extenders are connected in point to point system architecture over a long distance. The T1/E1 carrier technology uses dedicated copper cable or fiber optic cable when equipped with a T1/E1 fiber optic modem. -
Page 20: Configuring The Data Links
T1/E1 Data Format Selection The LE300 supports both T1 and E1data line connections between units. T1 is a digital circuit that uses the DS-1 (Digital Signaling level 1) signaling format to transmit voice/data at 1.544 Mbps. T1 can carry up to 24 digital channels for voice or data. -
Page 21: T1/E1 Receiver Equalization Gain Limit
Open* LE300 is the T1/E1 Master (generates the T1/E1 clock). Closed Closed LE300 is the T1/E1 Slave (receives the T1/E1 clock from master). : 1. Changes to this parameter take effect after cycling power. OTES 2. *Indicates default position. p:\standard ioms - current release\42004 instr. manuals\42004-735l2d.doc... -
Page 22: T1/E1 Data Line Grounding
Table 22. LVDS “IN” Setting on Main PCBA SW3-3 Enable/Disable LVDS “IN” Port Open* The LVDS “in” port is disabled (no cable connection from another LE300.) Closed The LVDS “in” port is enabled (cable is connected to LVDS “out” cable connection from anther to LVDS. -
Page 23: Lvds Port Indicators
LVDS Port Indicators Each LVDS port has two LEDs. The green LED is ON when the LE300 detects a signal connection from the other LE300 connected to that port. The yellow/orange LED is ON when the LE300 detects page line data (SmartSeries FSK or 50 kHz VLC) on the LVDS port. -
Page 24: Point To Multi-Point Page/Party ® System Connection
Pub. 42004-735L2D ® LE300 S Page 22 of 53 ODEL ERIES OUNT ARTY XTENDERS Point to Multi-point Page/Party ® System Connection Figure 9. Point to Multi-point Page/Party® System Connection Table 25. Point to Multi-point Page/Party® System Connection Table Parameter Switch... -
Page 25: Series Connection Of Page/Party ® System
Pub. 42004-735L2D ® LE300 S Page 23 of 53 ODEL ERIES OUNT ARTY XTENDERS Series Connection of Page/Party System ® ® Figure 10. Series Connection of Page/Party System Table 26. Series Connection of Page/Party® System Table Parameter Switch Configuration Description... -
Page 26: Rules For Interconnecting More Than Two Model Le300S
When Model LE300s are connected in series, a problem can arise when training the echo cancellation. If more than one Model LE300 is training echo cancellation on a signal line at the same time, then none of them will train echo cancellation properly. To prevent this, power each Line Extender one at a time. - Page 27 SmartSeries FSK data on any page line is transmitted to all page lines. Manual retraining of echo cancellation at one Model LE300 also requests it at all digitally interconnected Model LE300s. p:\standard ioms - current release\42004 instr. manuals\42004-735l2d.doc...
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Page 28: Installation
See Figure 2 on page 2 for the enclosure and mounting dimensions. 4. Drill or punch cable entries into the cabinet at the required locations. If installing the LE300 outdoors or in an uncontrolled temperature/humidity area, bottom conduit/cable entry is recommended. Use conduit hubs or cable glands equipped with an O-ring to prevent entry of dust or moisture which can damage the internal components. -
Page 29: Wiring
XTENDERS Wiring Pressure-type terminal blocks are provided inside the LE300 for connecting the incoming field wiring. The terminal blocks can support a wire size of No. 24 AWG to No. 12 AWG. It is recommended that the installer crimp ferrules on the end of each wire before attaching the wire into the terminal block to ensure a reliable termination. -
Page 30: T1/E1 Data Connections
Page 28 of 53 ODEL ERIES OUNT ARTY XTENDERS When using GAI-Tronics 60029 Series system cable, follow the wiring color code as shown in the table below: Table 27. Color Codes for GAI-Tronics 60029 Series System Cable Terminal Designator GTC System Cable... -
Page 31: Contact Closure Input Connections
Do not connect the TX (transmit) signal to the RX (receive) signal on the same Model LE300 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. -
Page 32: Contact Closure Output Connections
Pub. 42004-735L2D ® LE300 S Page 30 of 53 ODEL ERIES OUNT ARTY XTENDERS Table 29. TB8 and TB9 Terminal Designator Description Input 1 (+) Input contact 1 Input 1 (−) Input 2 (+) Input contact 2 Input 2 (−) - Page 33 Pub. 42004-735L2D ® LE300 S Page 31 of 53 ODEL ERIES OUNT ARTY XTENDERS Table 30. Contact Closure Output Connections Terminal Designator Description N.C. TB1 (Top) Output 1 – contact #1 N.O. N.C. TB1 (Bottom) Output 1 – contact #2 N.O.
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Page 34: Page Line Audio Monitoring Connections
N.O. 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 any external audio input device (audio recorder, radio transmitter, amplifier, etc.) to the audio line monitoring terminals using a twisted pair cable. The input impedance of the audio device should be 600 ohms or greater. -
Page 35: Distributing Line Balance Resistance
Pub. 42004-735L2D ® LE300 S Page 33 of 53 ODEL ERIES OUNT ARTY XTENDERS Distributing Line Balance Resistance As an increasing length of cable is added from the line extender the effects of cable resistance should be ® taken into consideration. The farther a Page/Party station is connected to the system cable from the line balance resistance the greater the chance deficiencies in system behavior may occur. -
Page 36: Fiber Optic Cable Connections
Models LE300-MM and LE300-MM1 require multi-mode fiber optic cables. Models LE300-SM and LE300-SM1 require single-mode fiber optic cables. With either model, the fibers must be terminated with ST-type connectors. The fiber optic cables between line extenders must be connected in a “cross-over”... -
Page 37: Fiber Optic Transceiver Set-Up (Models Le300-Mm, Le300-Sm, Le300-Mm1, And Le300-Sm1)
Loosen the screw and pull out the transceiver module. Figure 20. DIP Switches on Fiber Optic Transceiver (LE300-MM or LE300-SM only) These switches are factory set according to Figure 20. Use these settings to insure proper operation of the Model LE300-MM or LE300-SM Line Extender. -
Page 38: Verification Of Proper Operation
OUNT ARTY XTENDERS Fig21. DIP Switches on Fiber Optic Transceiver (LE300-MM1 or LE300-SM1 only) These switches are factory set according to Figure 21. Use these settings to insure proper operation of the Model LE300-MM1 or LE300-SM1 Line Extender Verification of Proper Operation This section describes the LEDs and their functions. - Page 39 ODEL ERIES OUNT ARTY XTENDERS Table 33. Fiber Optic Port Indicators (Models LE300-MM and LE300-SM) Indicator Function Glows green when the NRZ mode is enabled. Glows green on the Remote unit when Remote management is enabled. Glows green on the Local unit when it has discovered a Remote unit with Remote management enabled.
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Page 40: Summary Of Pc Board Connections And Settings
Pub. 42004-735L2D ® LE300 S Page 38 of 53 ODEL ERIES OUNT ARTY XTENDERS Summary of PC Board Connections and Settings Table 36. Audio Line Termination PCBA Designator Type Function DB-25 connector Connect to J4 on Main PCBA via ribbon cable. - Page 41 Pub. 42004-735L2D ® LE300 S Page 39 of 53 ODEL ERIES OUNT ARTY XTENDERS Table 37. Input/Output Termination Connection Module Designator Type Function DB-25 connector Connect to J3 on Main PCBA via ribbon cable Terminal block Field connections for contact output #1 The board’s silkscreen indicates the connections;...
- Page 42 Pub. 42004-735L2D ® LE300 S Page 40 of 53 ODEL ERIES OUNT ARTY XTENDERS Table 38. Main PCBA Designator Type Function RJ45 receptacle LVDS data “out” RJ45 receptacle LVDS data “in” DB-25 Connect to J1 on Input/Output Termination Connection Module via connector 25-pin ribbon cable.
- Page 43 Pub. 42004-735L2D ® LE300 S Page 41 of 53 ODEL ERIES OUNT ARTY XTENDERS Designator Type Function 8-position Position 1 - T1 line build out bit 0 DIP switch Position 2 - T1 line build out bit 1 Position 3 - T1 line build out bit 2...
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Page 44: Recording The Settings
ODEL ERIES OUNT ARTY XTENDERS Recording the Settings The following tables have been included to document the “as installed” LE300 settings for future reference. Table 39. Line Balance Resistor Enable on Audio Line Termination PCBA Header Setting Note Party Line #3... - Page 45 Pub. 42004-735L2D ® LE300 S Page 43 of 53 ODEL ERIES OUNT ARTY XTENDERS Table 42. DIP Switch SW2 on Main PCBA Switch Setting Function SW2-1 T1 line length SW2-2 SW2-3 SW2-4 T1/E1 receive equalizer gain limit SW2-5 Page line transmission direction hold time...
- Page 46 Pub. 42004-735L2D ® LE300 S Page 44 of 53 ODEL ERIES OUNT ARTY XTENDERS Table 45. DIP Switch SW5 on Main PCBA Switch Setting Note SW5-1 Enable FSK data for SmartSeries systems. SW5-2 Enable 50 kHz VLC. SW5-3 Regenerate page line ground fault.
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Page 47: Testing And Troubleshooting
Testing and Troubleshooting Generating Audio Test Signals ® The Model LE300 is capable of generating several test waveforms onto the audio lines of the Page/Party system to aid in system testing and troubleshooting. Rotary switch SW1 on the main PCBA determines ®... -
Page 48: Function Testing
XTENDERS Function Testing The Model LE300 can manually activate some of the system “control” functions to aid in system trouble- shooting or commissioning. Functions include relay contact outputs, party line off-hook generation, page line ground fault generation, and the LVDS connector LEDs. Similar to the audio test generation, rotary switch SW1 and DIP switch SW2 are used to activate the various functions. -
Page 49: Specifications
DC operating current ....................250 mA (idle, nominal) 1000 mA (maximum) T1 Parameters : The LE300 is not compatible with the public switched telephone network. OTES The LE300-MM is not compatible with the LE300-MM1 The LE300-SM is not compatible with the LE300-SM1 Encoding .................. - Page 50 Pub. 42004-735L2D ® LE300 S Page 48 of 53 ODEL ERIES OUNT ARTY XTENDERS Line Balance Characteristics Coupling ............................AC coupled Adjustment range ............Disabled, 15 ohms to 115 ohms adjustable (nominal) Page Line or Party Line Maximum Peak Working Voltage L1 to L2 ..........................
- Page 51 Pub. 42004-735L2D ® LE300 S Page 49 of 53 ODEL ERIES OUNT ARTY XTENDERS Page Line Audio between Two LE300s Frequency response ................300 Hz to 7.0 kHz 0.5 dB @ −10 dB Reference voltage level ............1.5 V ( ) @ 33 ohms impedance (nominal) Output type......
- Page 52 Pub. 42004-735L2D ® LE300 S Page 50 of 53 ODEL ERIES OUNT ARTY XTENDERS Page Line Ground Fault Detection DC resistance from either L1 or L2 to ground for fault ............5,000 ohms DC resistance from either L1 or L2 to ground for no fault ............8,000 ohms Minimum ground fault duration for detection ................
- Page 53 5. The “wet contact input closed voltage” may be difficult to achieve when connecting a bipolar open collector output to a contact input. 6. A driving high wet contact input will source current to the LE300 when the LE300 is not powered. This current may or may not prevent the LE300 from powering up properly.
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Page 54: Replacement Parts
OUNT ARTY XTENDERS Model LE300-MM (62/125 µm cable) .............. 12 dB power budget (5 km) Model LE300-SM (9/125 µm cable) ..............31 dB power budget (80 km) Model LE300-MM1 (62/125 µm cable) ............. 12 dB power budget (5 km Model LE300-SM1 (9/125 µm cable) .............. 31 dB power budget (80 km) Mechanical Enclosure Material .......................... -
Page 55: Frequently Asked Questions
Q: Can I connect a Model LE300 to an LE100? A: No, the T1 connection cannot be used to connect an LE300 to an LE100. However, an analog connection can be used, i.e., an LE300 and an LE100 can both connect to the same system cable. - Page 56 Warranty Equipment. GAI-Tronics warrants for a period of one (1) year from the date of shipment, that any GAI-Tronics equipment supplied hereunder shall be free of defects in material and workmanship, shall comply with the then-current product specifications and product literature, and if applicable, shall be fit for the purpose specified in the agreed-upon quotation or proposal document.
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