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GAI-Tronics LE300 Manual Download Page 36

Pub. 42004-735L2D 

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ODEL 

LE300

 

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AGE

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Page 34 of 53 

p:\standard ioms - current release\42004 instr. manuals\42004-735l2d.doc 

02/16 

Fiber Optic Cable Connections 

Model LE300-MM, LE300-SM, LE300-MM1, and LE300-SM1 Line Extenders contain a T1/E1 Fiber 
Optic Transceiver as shown below in Figure 18. 

 

Figure 18.  T1/E1 Fiber Optic Transceiver (top view) 

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” 
fashion meaning the Transmit (XMIT) port of line extender number one connects to the Receive (RCV) 
port of line extender number two and vice versa as shown below. 

 

Figure 19.  Fiber Optic Cable Connection 

Summary of Contents for LE300

Page 1: ...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 P...

Page 2: ...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 T...

Page 3: ...ts 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 i...

Page 4: ...53 p standard ioms current release 42004 instr manuals 42004 735l2d doc 02 16 Line Extender and Sub Component Details Refer to Figure 2 through Figure 4 below for dimensional information and sub compo...

Page 5: ...NE EXTENDERS Page 3 of 53 p standard ioms current release 42004 instr manuals 42004 735l2d doc 02 16 ModelLE300 Figure 3 Interior View of Components Model LE300 ModelLE300 MM LE300 SM LE300 MM1 andLE3...

Page 6: ...n 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 C...

Page 7: ...ain 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 paramet...

Page 8: ...ed off 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...

Page 9: ...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...

Page 10: ...ge 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 positi...

Page 11: ...ms VLC operation is only used within NON SmartSeries systems If both 50 VLC and FSK are enabled at the same time neither feature will function correctly Page Line Ground Fault Detection The Model LE30...

Page 12: ...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 L...

Page 13: ...uted 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...

Page 14: ...ition 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 P...

Page 15: ...ring Party Line 5 SW4 1 Open Disconnected Closed Connected Party Line 4 SW4 2 Open Disconnected Closed Connected Party Line 3 SW4 3 Open Disconnected Closed Connected Party Line 2 SW4 4 Open Disconnec...

Page 16: ...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...

Page 17: ...moved Disabled Page Line P7 Pins 1 2 Disabled R24 Pins 2 3 Enabled Removed Disabled NOTES Indicates default position Contact Closure Inputs Relay Outputs I O Five independent contact closures can be t...

Page 18: ...below for setting details Table 16 Echo Cancellation Power On Delay Setting on Main PCBA SW6 1 Echo Cancellation Power On Delay Open One minute Closed No delay NOTES 1 Changes to this parameter take e...

Page 19: ...c transceiver and fiber optic cable must be used Model LE300 XXX includes a fiber optic transceiver NOTE The Model LE300 is NOT designed for use with the public switched telephone network Model LE300...

Page 20: ...tting details Table 17 Data Format Setting on Main PCBA SW5 8 Format Open T1 Mode 1 544Mbps 24 channel Closed E1 Mode 2 048Mbps 32 channel NOTES 1 Changes to this parameter take effect after cycling p...

Page 21: ...imit T1 Mode E1 Mode Open up 36 dB long haul 12 dB short haul Closed down 15 dB limited long haul 43 dB long haul NOTES 1 Changes to this parameter take effect without cycling power 2 Indicates defaul...

Page 22: ...E1 Tx line floating Indicates default position NOTE Do not ground the T1 E1 lines at both ends Doing so will create a ground loop LVDSDataLinkSettings The LVDS in port is disabled unless it is receivi...

Page 23: ...orange LED is ON when the LE300 detects page line data SmartSeries FSK or 50 kHz VLC on the LVDS port Typical Data Link Settings The following section shows the most common line extender connection sc...

Page 24: ...SW3 1 SW3 2 Units A B and C are the master T1 E1 clock sources SW3 1 open SW3 2 open Unit D is a slave and uses the T1 E1 clock from Unit A SW3 1 closed SW3 2 closed Unit E is a slave and uses the T1...

Page 25: ...between each pair of line extenders A to B C to D T1 E1 Clock Source SW3 1 SW3 2 Units A and C are the master T1 E1 clock sources SW3 1 open SW3 2 open Unit B is the slave and uses the T1 E1 clock fro...

Page 26: ...ure 11 Maximum Series Connections 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 sign...

Page 27: ...igure 13 Invalid Loop Connection of Page Party Systems All contact input states are ORed together to determine a contact output state All remote page line audio detected states are ORed together to de...

Page 28: ...the rear component panel to install the mounting feet disconnect the ribbon cables and the ground wire connections from the rear panel Remove the four nuts that hold the panel in place and set the pan...

Page 29: ...the end of each wire before attaching the wire into the terminal block to ensure a reliable termination Wiring connections to the LE300 are described below PowerConnections Connect input power of 120...

Page 30: ...ne 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...

Page 31: ...oing 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 ContactClosureInputConnections Contact in...

Page 32: ...contact 5 TB9 Input 5 ContactClosureOutputConnections Seven relay outputs are provided Each relay output provides two contact sets and each contact set consists of normally open NO common C and norma...

Page 33: ...Top N C Output 1 contact 1 COM N O TB1 Bottom N C Output 1 contact 2 COM N O TB2 Top N C Output 2 contact 1 COM N O TB2 Bottom N C Output 2 contact 2 COM N O TB3 Top N C Output 3 contact 1 COM N O TB3...

Page 34: ...escription 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 VerifyingtheProperLineBalanceResistance For proper line extender oper...

Page 35: ...proximately 33 ohms SmartSeries systems utilize FSK for communication on the page line between the stations and the Line Extender Since FSK frequencies range between 31 kHz and 33 kHz instead of audio...

Page 36: ...18 T1 E1 Fiber Optic Transceiver top view 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 th...

Page 37: ...and LE300 SM1 The Fiber Optic Transceiver contains two DIP switches as shown below To access the switches the module must be removed from the chassis Loosen the screw and pull out the transceiver mod...

Page 38: ...ation of the Model LE300 MM1 or LE300 SM1 Line Extender VerificationofProperOperation This section describes the LEDs and their functions Table 32 Copper Port Indicators Models LE300 MM and LE300 SM I...

Page 39: ...ever a line code violation is received LOS Glows red when the RJ 48 is receiving no signal and is in an LOS ALARM state This condition will also send an RAI signal to the fiber port If the Fault Loopb...

Page 40: ...r enabled disabled P6 Jumper clip Party line 5 line balance resistor enabled disabled P7 Jumper clip Page line balance resistor enabled disabled P5 P8 Terminal block Page Line Terminals 1 and 2 Party...

Page 41: ...TB4 Terminal block Field connections for contact output 4 The board s silkscreen indicates the connections the pin numbers are not labeled TB5 Terminal block Field connections for contact output 5 The...

Page 42: ...clip Party line 5 off hook detector enabled disabled P8 P9 Jumper clip Party line 4 off hook detector enabled disabled P10 P11 Jumper clip Party line 3 off hook detector enabled disabled P12 P13 Jump...

Page 43: ...monitor volume bit 4 SW4 8 position DIP switch Position 1 Party Line 5 connect disconnect Position 2 Party Line 4 connect disconnect Position 3 Party Line 3 connect disconnect Position 4 Party Line 2...

Page 44: ...Party Line 4 P4 Party Line 1 P6 Party Line 5 P7 Page Line Table 40 Line Balance Resistance on Audio Line Termination PCBA Potentiometer Setting Note R3 Party Line 3 R4 Party Line 2 R19 Party Line 4 R2...

Page 45: ...en Up Used during testing only Table 43 DIP Switch SW3 on Main PCBA Switch Setting Function SW3 1 T1 E1 master slave SW3 2 SW3 3 Enable LVDS in SW3 4 Enable LVDS out SW3 5 Monitor volume SW3 6 SW3 7 S...

Page 46: ...ground fault activates output contact SW5 5 Remote ground fault activates output contact SW5 6 Local page audio activates output contact SW5 7 Remote page audio activates output contact SW5 8 Select...

Page 47: ...als SW1 Selected Page Party Line Selected Tone SW2 5 SW2 6 SW2 7 SW2 8 1 Party Line 1 7 kHz sine wave Open Open Open Closed 6 Page Line 4 kHz sine wave Closed Open Open Closed 2 kHz sine wave Open Clo...

Page 48: ...andom waveform containing all signals above Closed Open Closed Closed NOTE Remember to restore SW1 to 0 and SW2 to its initial setting when no longer generating test signals Table 50 Activate Contact...

Page 49: ...ZS Framing Extended Superframe ESF E1 Parameters NOTES The LE300 is not compatible with the public switched telephone network The LE300 MM is not compatible with the LE300 MM1 The LE300 SM is not comp...

Page 50: ...requency 65 829 Hz nominal FSK high frequency capture range within inside 32 914 frequency 34 133 Hz nominal FSK high frequency release range beyond outside 31 779 frequency 36 864 Hz nominal FSK low...

Page 51: ...ansformer coupled nominal Gain error 3 dB 1 020 Hz sine wave 0 dB ref 1 5 V RMS 33 ohms impedance both ends Distortion noise THD 1 0 1 020 Hz sine wave 0 dB ref 1 5 V RMS 33 ohms impedance both ends S...

Page 52: ...ilohms nominal Resistance when not generating ground fault 1 Megohm NOTE The resistance is from the center tap of the page line coupling transformer to ground Party Line Off hook detection DC resistan...

Page 53: ...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 7 Be aware of the ground loop s formed when using w...

Page 54: ...NEMA 4 Environmental Temperature range 0 C to 50 C 32 F to 122 F Relative humidity 10 85 non condensing Replacement Parts Part Number Description LE300 LE300 MM LE300 SM LE300 MM1 LE300 SM1 51701 039...

Page 55: ...electrically compatible only mechanical changes were made between the LE200 and LE300 Q Can I connect a Model LE300 MM to a LE200 FSR or a Model LE300 SM to a LE200 FLR A No the units contain differe...

Page 56: ...of the Contractor s personnel from the work site Re performance of services shall be Buyer s sole and exclusive remedy and in no event shall GAI Tronics warranty obligations with respect to services e...

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