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Hubbell GAI-TRONICS LE300 Series Manual

Wall mount line extenders
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LE300 Series Wall Mount Line Extenders
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
GAI-Tronics Corporation 3030 Kutztown Road, Reading, PA 19605 USA
610-777-1374 ◼ 800-492-1212 ◼ Fax 610-796-5954
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ISIT WWW
HUBBELL
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
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A B L E O F
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COM
GAI
TRONICS
EN FOR PRODUCT LITERATURE AND MANUALS
®
O N T E N T S
Pub. 42004-735L2E

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Summary of Contents for Hubbell GAI-TRONICS LE300 Series

  • Page 1: Table Of Contents

    Party Line Off-Hook Regeneration ..................... 24 Audio Line Connection Relays ......................25 Audio Line Muting ..........................26 GAI-Tronics Corporation 3030 Kutztown Road, Reading, PA 19605 USA 610-777-1374 ◼ 800-492-1212 ◼ Fax 610-796-5954 ISIT WWW HUBBELL TRONICS EN FOR PRODUCT LITERATURE AND MANUALS...
  • Page 2 Fiber Optic Transceiver ........................53 Mechanical ............................. 54 Environmental ............................54 Frequently Asked Questions ......................55 GAI-Tronics Corporation 3030 Kutztown Road, Reading, PA 19605 USA 610-777-1374 ◼ 800-492-1212 ◼ Fax 610-796-5954 ISIT WWW HUBBELL TRONICS EN FOR PRODUCT LITERATURE AND MANUALS...
  • Page 3 Figure 23. Maximum Parallel Connections ....................37 Figure 24. Invalid Loop Connection of Page/Party Systems ..............37 GAI-Tronics Corporation 3030 Kutztown Road, Reading, PA 19605 USA 610-777-1374 ◼ 800-492-1212 ◼ Fax 610-796-5954 ISIT WWW HUBBELL TRONICS EN FOR PRODUCT LITERATURE AND MANUALS...
  • Page 4 Table 50. Contact Closure Output Activation ..................... 47 Table 51. Off-Hook & Ground Fault Generation..................47 GAI-Tronics Corporation 3030 Kutztown Road, Reading, PA 19605 USA 610-777-1374 ◼ 800-492-1212 ◼ Fax 610-796-5954 ISIT WWW HUBBELL TRONICS EN FOR PRODUCT LITERATURE AND MANUALS...

  • Page 5: Gai-Tronics Corporation 3030 Kutztown Road, Reading, Pa 19605 Usa

    Table of Contents Pub. 42004-735L2E GAI-Tronics Corporation 3030 Kutztown Road, Reading, PA 19605 USA 610-777-1374 ◼ 800-492-1212 ◼ Fax 610-796-5954 ISIT WWW HUBBELL TRONICS EN FOR PRODUCT LITERATURE AND MANUALS...

  • Page 6: Confidentiality Notice

    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 GAI-Tronics Corporation 3030 Kutztown Road, Reading, PA 19605 USA 610-777-1374  800-492-1212  Fax 610-796-5954 ISIT WWW HUBBELL TRONICS EN FOR PRODUCT LITERATURE AND MANUALS...

  • Page 7: Features

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 2 of 55 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 8: Figure 2. Model Le300 Series Outline

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

  • Page 9: Model Le300

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 4 of 55 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 10/23...

  • Page 10: Model Le300-Mm2 And Le300-Sm2

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 5 of 55 Models LE300-MM2 and LE300-SM2 O mnitron Systems iConverter Tech nology, Inc. 1-Module Power Chassis 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.

  • Page 11: Input/Output (I/O) Termination Connection Module

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 6 of 55 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).

  • Page 12: Main Pcba

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 7 of 55 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).

  • Page 13: Installation

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 8 of 55 Installation —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.

  • Page 14: Page/Party System Cable Connection

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 9 of 55 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.

  • Page 15: T1/E1 Data Connections

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 10 of 55 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).

  • Page 16: Contact Closure Output Connections

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 11 of 55 Table 3. Contact Closure Input Connections Terminal Designator Description 1 (+) NPUT Input contact 1 1 (−) NPUT 2 (+) NPUT Input contact 2 2 (−) NPUT 3 (+) NPUT Input contact 3 3 (−)

  • Page 17: Table 4. Contact Closure Output Connections

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 12 of 55 Table 4. Contact Closure Output Connections Terminal Designator Description TB1 (Top) Output 1—contact #1 TB1 (Bottom) Output 1—contact #2 TB2 (Top) Output 2—contact #1 TB2 (Bottom) Output 2—contact #2 TB3 (Top) Output 3—contact #1 TB3 (Bottom)

  • Page 18: Page Line Audio Monitoring Connections

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 13 of 55 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.

  • Page 19: Figure 14. T1/E1 Fiber Optic Transceiver For Le300-Mm2 And -Sm2 (Top View)

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 14 of 55 Omnitron Systems iConverter Technology, Inc. 1-Module Power Chassis 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. •...

  • Page 20: Fiber Optic Transceiver Set-Up (Models Le300-Mm And Le300-Sm)

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 15 of 55 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).

  • Page 21: Fiber Optic Transceiver Set-Up (Model Le300-Mm1 Or Le300-Sm1)

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 16 of 55 Fiber Optic Transceiver Set-Up (Model LE300-MM1 or LE300-SM1) The fiber optic transceivers contain two DIP switches. The switches are factory set for proper operation (see Figure 17). Replacement modules will need to be configured to match the original factory settings: 1.

  • Page 22: Fiber Optic Transceiver Set-Up (Model Le300-Mm2 Or Le300-Sm2)

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 17 of 55 Fiber Optic Transceiver Set-Up (Model LE300-MM2 or LE300-SM2) The fiber optic transceivers contain two DIP switches (one at the front and one inside). The switches are factory set for proper operation (see Figure 17). Configure replacement modules to match the original factory settings: 1.

  • Page 23: Configuration

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 18 of 55 Configuration Audio Functions Page Line Audio Transmission A pair of Model LE300s provides page line audio transmission between two Page/Party system cables. The transmission is half-duplex. When a line extender detects a peak audio level equal or to or above the Peak Voltage Level Detection Threshold: •...

  • Page 24: Page Line Audio Monitoring Output

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 19 of 55 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.

  • Page 25: Page Line Audio Detect Output Contact

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 20 of 55 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 26: Page Line 50 Khz Vlc Transmission

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 21 of 55 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 system cables. • 50 kHz VLC signaling occurs on the page line and is typically used to alter the speaker volume of Page/Party stations with VLC receivers.

  • Page 27: Page Line Ground Fault Regeneration

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 22 of 55 Page Line Ground Fault Re-generation Ground faults can be duplicated on the local Page/Party system cable when a ground fault is detected at a remote LE300 line extender. Enable regeneration of the ground fault using DIP switch SW5, position three, (see Figure 8 and Table 13).

  • Page 28: Party Line Audio Transmission

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 23 of 55 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. •...

  • Page 29: Party Line Off-Hook Regeneration

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 24 of 55 Table 16. Main PCBA Party Line Off-Hook Detection Settings Party Line Headers Shorting Clip Off-Hook Detection Pins 1–2* Disabled Party Line 1 P15, P14 Pins 2–3 Enabled Removed Disabled Pins 1–2* Disabled...

  • Page 30: Audio Line Connection Relays

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 25 of 55 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 where a particular audio line is not physically connected to the line extender.

  • Page 31: Audio Line Muting

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 26 of 55 Audio Line Muting A Page/Party system cable is not connected to the line extender in some system configurations. • All audio lines (page and party lines one through five) should be muted in this case because they are not physically connected to the line extender.

  • Page 32: Table 20. Audio Termination Connection Module Page/Party Line Balance Settings

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 27 of 55 Table 20. Audio Termination Connection Module Page/Party Line Balance Settings Adjustment Audio Line Header Shorting Clip Line Balance Potentiometer Pins 1–2* Disabled Party Line 5 Pins 2–3 Enabled Removed Disabled Pins 1–2*...

  • Page 33: I/O (Contact Inputs & Relay Outputs)

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 28 of 55 Line Balance Resistance Distribution The effects of cable resistance need to be taken into consideration as the length of cable added from the line extender is increased. 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 34: Echo Cancellation

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 29 of 55 Echo Cancellation Line echo (also known as electric or hybrid echo) is created by the electrical circuitry connected to a two- wire (full duplex) audio system. Echo is inherent in all full-duplex audio systems and is affected by the audio line length and line impedance mismatches.

  • Page 35: Data Links

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 30 of 55 Data Links The Model LE300 is equipped with two different data-link types for connection to another line extender: • T1/E1 • LVDS (Low Voltage Differential Signaling) The type of data connection(s) required is determined by the system architecture. It is possible to use both types at the same time to achieve complex system architectures.

  • Page 36: Table 22. Main Pcba T1/E1 Data Format Setting

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 31 of 55 Use DIP switch SW5 position eight, on the main PCBA, to select the data link format for the digital audio transmission between line extenders. Both line extenders must be set to the same format (see Figure 8 and Table 22).

  • Page 37: Table 24. Main Pcba Receive Equalizer Gain Limit Setting

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 32 of 55 Table 24. Main PCBA Receive Equalizer Gain Limit Setting Receive Equalization Gain Limit SW2-4 T1 Mode E1 Mode −36 dB (long haul) −12 dB (short haul) Open (up)* −15 dB (limited long haul) −43 dB (long haul) Closed (down)

  • Page 38: Table 27. Main Pcba Lvds In Port Setting

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 33 of 55 LVDS Data Link Settings The LVDS in port is disabled unless it is receiving a signal from an LVDS out port of another line extender. Use switch SW3 position three to enable the LVDS in port (see Figure 8 and Table 27). Table 27.

  • Page 39: Typical Data Link Settings

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 34 of 55 Typical Data Link Settings The following sections show the most common line extender connection schemes and the expected T1/E1 and LVDS data line parameters for each. Consult the applicable tables above to determine the correct switch settings.

  • Page 40: Figure 21. Series Connection Of Page/Party System

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 35 of 55 Table 30. Point to Multi-point Page/Party System Connection Table Parameter Switch Configuration Description Determined by installation distance between each pair of line extenders: • A to D T1 Line Length •...

  • Page 41: Figure 22. Maximum Series Connections

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 36 of 55 Table 31. Series Connection of Page/Party System Cable Parameter Switch Configuration Description Determined by installation distance between each pair of line extenders: • T1 Line Length A to B •...

  • Page 42: Figure 23. Maximum Parallel Connections

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 37 of 55 Figure 23. Maximum Parallel Connections • A maximum of 16 Model LE300s can be connected within a single zone or Page/Party subsystem. • Avoid having more than one Model LE300 connected to a particular Page/Party cable. Use the LVDS link whenever possible instead.

  • Page 43: Pc Board Connection And Setting Summary

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 38 of 55 PC Board Connection and Setting Summary Table 32. Audio Line Termination PCBA Designator Type Function DB-25 connector connect to J4 on Main PCBA via ribbon cable Jumper clip party line three—line balance resistor (enabled/disabled) Jumper clip party line two—line balance resistor (enabled/disabled)

  • Page 44: Table 33. Input/Output Termination Connection Module

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 39 of 55 Table 33. Input/Output Termination Connection Module Designator Type Function Connect to J3 on Main PCBA via ribbon cable. DB-25 connector Field connections for contact output one. The board’s silkscreen indicates the connections; the pin numbers Terminal block are not labeled.

  • Page 45: Table 34. Main Pcba

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 40 of 55 Table 34. Main PCBA Designator Type Function RJ45 LVDS data out receptacle RJ45 LVDS data in receptacle DB-25 connect to J1 on input/output termination connection module via 25-pin connector ribbon cable DB-25...
  • Page 46 Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 41 of 55 Designator Type Function Position 1—T1/E1 clock source (master/slave) Position 2—T1/E1 clock source (master/slave) Position 3—LVDS in (enabled/disabled) 8-position Position 4—LVDS out (enabled/disabled) DIP switch Position 5—600-ohm audio monitor volume (bit 1) Position 6—600-ohm audio monitor volume (bit 2) Position 7—600-ohm audio monitor volume (bit 3) Position 8—600-ohm audio monitor volume (bit 4)

  • Page 47: Installation Settings Documentation

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 42 of 55 Installation Settings Documentation The following tables are included to document the installation settings for future reference: Table 35. Line Balance Resistor Enable on Audio Line Termination PCBA Header Setting Note party line three...

  • Page 48: Table 38. Dip Switch Sw2 On Main Pcba

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 43 of 55 Table 38. DIP Switch SW2 on Main PCBA Switch Setting Function SW2-1 SW2-2 T1 line length SW2-3 SW2-4 T1/E1 receive equalizer gain limit SW2-5 page line transmission direction hold time SW2-6 SW2-7 page line peak voltage level detection threshold...

  • Page 49: Operation

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 44 of 55 Table 41. 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 SW5-4 local ground fault activates output contact SW5-5...

  • Page 50: Audio Test Signal Generation

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 45 of 55 Table 45. Fiber Optic Port Indicators (Model 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.

  • Page 51: Functional Testing

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 46 of 55 : The frequency selections are different on the selected audio party line. Refer to tables below for valid switch settings. Table 48. Audio Test Signals Selected Page/Party Selected Tone Line Party Line #1 7 kHz (sine wave)

  • Page 52: Table 49. Data Signal On Page Line Generation

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 47 of 55 Table 49. Data Signal on Page Line Generation Selected Data Signal SW2-5 SW2-6 SW2-7 SW2-8 50.087 kHz sine wave (VLC tone) Closed Open Open Closed 30.720 kHz sine wave (SmartSeries data 0) Open Closed Open...

  • Page 53: Replacement Parts

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 48 of 55 Replacement Parts Part Number Description ■ ■ ■ ■ ■ ■ ■ 51701-039 Circuit Breaker, 15 A ■ ■ ■ ■ ■ ■ ■ 51809-008 Fuse, 2 A ■...

  • Page 54: Specifications

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 49 of 55 Specifications Electrical Supply Voltage Input voltage ........................120 V ac, 50/60 Hz 240 V ac, 50/60 Hz Power consumption ........................ 33 W (nominal) 82 W (maximum) Internal Power Supply Voltage ..............................

  • Page 55: Line Balance Characteristics

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 50 of 55 LVDS Type .................... straight-through shielded CAT 5e Ethernet Cable characteristic impedance .....................100 Ω (nominal) Maximum cable length ........................... 10 m Line Balance Characteristics Coupling ............................ac coupled Adjustment range ..............disabled, 15 Ω to 115 Ω adjustable (nominal) Page Line or Party Line Maximum Peak Working Voltage L1 to L2 ..........................

  • Page 56: Page Line Monitor Audio From Either Page Line

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 51 of 55 Page Line Monitor Audio from Either Page Line Frequency response ................300 Hz to 7.0 kHz 0.5 dB @ −10 dB @ 600 Ω impedance (nominal) Reference voltage level .............. 775 mV Output type........

  • Page 57: Party Line #2 To #5 Audio Between Two Le300S

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 52 of 55 Party Line #2 to #5 Audio between Two LE300s Frequency response ................300 Hz to 3.5 kHz 0.5 dB @ −10 dB @ 33 Ω impedance (nominal) Reference voltage level ..............1.5 V Output type........

  • Page 58: Contact Outputs

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 53 of 55 Contact Outputs Contact output type ................... DPDT miniature signal relay Switching power ..................... 30 W dc (resistive load) 62.5 VA ac (resistive load) Switching voltage........................... 110 V dc 125 V ac Switching current ..........................

  • Page 59: Mechanical

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 54 of 55 Range dB (km) : The maximum achievable data transmission distance, over a fiber optic link, depends on many factors, such as transmit power, receiver sensitivity/saturation, the number of fiber connectors, splices, and the cable type.

  • Page 60: Frequently Asked Questions

    Pub. 42004-735L2E LE300 Series Wall Mount Line Extenders Page 55 of 55 Frequently Asked Questions Q: Why does it take so long for the propagation of off-hook to on-hook transitions? A: The line balance ac coupling capacitors take some time to charge. Also, the delay helps to prevent audio from looking like an on-hook condition.
  • Page 61 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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