GAI-Tronics L3149B Manual
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GAI-Tronics L3149B Manual

C200 advanced desk set
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Pub. 43004-023C
G A I - T R O N I C S ® C O R P O R A T I O N
A H U B B E L L C O M P A N Y
Model L3149B
C200 Advanced Desk Set
GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA
610-777-1374
800-492-1212
Fax: 610-796-5954
V
.
-
.
ISIT WWW
GAI
TRONICS
COM FOR PRODUCT LITERATURE AND MANUALS

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  • Page 1 G A I - T R O N I C S ® C O R P O R A T I O N A H U B B E L L C O M P A N Y Model L3149B C200 Advanced Desk Set GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA 610-777-1374 800-492-1212 Fax: 610-796-5954...
  • Page 2 GAI-Tronics. WARRANTY 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.

  • Page 3: Table Of Contents

    Table of Contents FOREWORD ................................1 ..............................1 COPE OF ANUAL ................................1 OMENCLATURE ..........................1 RDERING EPLACEMENT ARTS ..............................1 ERVICE AND EPAIR ............................2 EATURES AND ENEFITS FCC I ..........................3 NTERFERENCE ARNING CMOS I ..................3 ANDLING OF NTEGRATED IRCUIT EVICES ..........................4 ERFORMANCE PECIFICATIONS DESCRIPTION................................5 .............................5 HYSICAL ESCRIPTION...
  • Page 4 Table of Contents Model L3149B C200 Advanced Desk Set ......................14 UMERIC EYPAD REQUENCY ELECTION ...............................14 REQUENCY ISPLAY ) ..................15 ARALLEL TATUS PERATION PERATION PTT F ..............................16 REQUENCY ...........................16 UPERVISOR ONTROL ................................16 LERT ONES ..................................17 AGING Entering the Paging Menu ..........................17 Selecting the Page Type............................17...
  • Page 5 Model L3149B C200 Advanced Desk Set Table of Contents ................................34 OUNTING .........................35 EVEL DJUSTMENTS AND IAGNOSTICS ..........................36 ELOADING ACTORY EFAULTS ..........................36 IAGNOSTICS ELECTION PROG 1/5 - L ...........................36 UTPUT DJUST PROG 2/6 - L ..........................37 ENSITIVITY PROG 3/7 - I ........................37...
  • Page 6 Table of Contents Model L3149B C200 Advanced Desk Set ................................66 LIAS ABLE TROUBLESHOOTING ............................69 C200 A ....................69 ROUBLESHOOTING THE DVANCED ..............................70 EPLACEMENT SCHEMATICS ................................71 1 ..................72 NTERFACE CHEMATIC IAGRAM HEET I/O S 2 ..................73 UDIO CHEMATIC IAGRAM HEET I/O S 3............74...

  • Page 7: Foreword

    Foreword Scope of Manual This manual offers descriptive data and service information for the C200 Model L3149B Advanced Desk Set. Service diagrams and printed circuit board details are a part of this service manual. Nomenclature The model number, located on the nameplate on the bottom of the unit, specifically identifies GAI- Tronics equipment.

  • Page 8: Features And Benefits

    Foreword Model L3149B C200 Advanced Desk Set Features and Benefits Feature Benefit Programmable 16-frequeny control Any one of 16 EIA standard tones can be programmed for each with alias (Tone mode only) frequency/function key along with an alias for each.

  • Page 9: Fcc Interference Warning

    Model L3149B C200 Advanced Desk Set Foreword FCC Interference Warning The FCC requires that manuals pertaining to Class A and Class B computing devices must contain warnings about possible interference with local residential radio and TV reception. This warning reads...

  • Page 10: Performance Specifications

    Foreword Model L3149B C200 Advanced Desk Set 10. All low impedance test equipment (such as pulse generators, etc.) should be connected to CMOS device inputs after power is applied to the CMOS circuitry. Similarly, such low impedance equipment should be disconnected before power is turned off.

  • Page 11: Description

    CDM1550 LS Mobile Radio control. By adding the optional relay module to the L3149B Desk Set, the C200 can be configured for E&M and tone with E&M control allowing further possibilities for remote dispatch. In addition, by configuring for local operation (L3147A) with the XAC0008A software, the C200 can be configured to operate with the CDM1550 LS Mobile Radio for local control (L3147A).

  • Page 12: Signaling Buttons

    Description Model L3149B C200 Advanced Desk Set Signaling Buttons Refer to the diagram above for the location of the front panel buttons. The following paging buttons are used for paging and initiating alert tones: • • SELECT • • PAGE DOWN •...

  • Page 13: Monitor Led

    Model L3149B C200 Advanced Desk Set Description Monitor LED LED, located to the left of the button, illuminates when monitor is activated. MONITOR Keypad Buttons The numeric keypad is used for the selection of a desired frequency, page capcode entry and MDC1200 ID entry.

  • Page 14: Accessories For The Advanced C200 Desk Sets

    Description Model L3149B C200 Advanced Desk Set Accessories for the Advanced C200 Desk Sets Description Part No. Programming: Programming Bundle CD XAC4000A Programming Cable with Adapter XAC0004A Equipment: Desk Microphone XDM002A Power Supply, 120 V ac 60 Hz (replacement) 3308-00750-00...

  • Page 15: Operation

    Complete information is contained in the Programming section of this manual. Display The Model L3149B Desk Set has a backlit 2 × 16 character super-twist LCD display to provide valuable operator information. This information allows the operator to determine the state of the unit quickly. The features of the display are as shown below.

  • Page 16: Setting The Clock

    Operation Model L3149B C200 Advanced Desk Set Setting the Clock 1. Power up the C200 Advanced Desk Set. 2. Wait for the message to clear. CHECKING PARAMETERS PLEASE WAIT 3. When the message appears, immediately press the button in the L314XA V .

  • Page 17: Initiating Calls

    Model L3149B C200 Advanced Desk Set Operation Initiating Calls Before initiating a call in a conventional system, press the button to verify that the radio MONITOR channel is clear. Always allow time for the radio channel to be established. In addition, if the unit is configured to generate PTT IDs and to generate side tone, a tone will be heard during the PTT pretime and PTT generation.

  • Page 18: Front Panel Buttons

    Operation Model L3149B C200 Advanced Desk Set Front Panel Buttons Signaling Buttons The signaling buttons operate as follows: button is used to enter MDC mode. While in MDC mode, the operator may select from among various MDC1200 messages to be transmitted. These include Call Alert, Radio Check, Select Call, and Radio Enable/Disable.

  • Page 19: Volume Up And Volume Down Buttons

    Model L3149B C200 Advanced Desk Set Operation VOLUME Up and VOLUME Down Buttons Press the Up or Down buttons to adjust the local speaker volume if the handset is on-hook. The VOLUME handset speaker volume is adjusted if the handset is off-hook.

  • Page 20: Numeric Keypad Frequency Selection

    Model L3149B C200 Advanced Desk Set Numeric Keypad Frequency Selection The L3149B can be configured for controlling up to 16-frequency control with the XAC0008A C200 Programming Software. When the desired frequency is selected using the numeric keypad, that frequency change command is sent to the base.

  • Page 21: Parallel Status Operation (Tone Operation Only)

    Operation Parallel Status Operation (Tone Operation Only) The L3149B Desk Set supports parallel status updating. This feature allows all dispatch positions to know the status of the base station. To decode this information, the unit actually senses high level guard tone (HLGT), then decodes the function tone that follows.

  • Page 22: Ptt Frequency

    Tone Supervisor Control The Model L3149B offers a Tone Supervisor Control feature that locks out transmission of parallel units upon detection of the proper tone control sequence. This feature cannot be activated during a parallel transmission.

  • Page 23: Paging

    Model L3149B C200 Advanced Desk Set Operation Paging These desk sets support the following formats: • • DTMF 1500 • • Immediate DTMF 2805 • • 2-Tone Custom 2-Tone • 5-Tone Paging may be initiated by entering digits on the numeric keypad, by programming an alias using the XAC0008A C200 Programming Software, by configuring any of the programmable buttons, or by PC control.

  • Page 24: Entering A Programmed Alias

    Operation Model L3149B C200 Advanced Desk Set Entering a Programmed Alias If paging aliases have been programmed into the desk set, press either the or the DOWN button after entering the paging menu. To scroll alphabetically, press the combination of either LOCK buttons.

  • Page 25: Mdc1200 Applicability

    Model L3149B C200 Advanced Desk Set Operation MDC1200 Applicability These desk sets support the following MDC1200 encode features: • PTT-ID used at the beginning of voice transmission to indicate to the receiving unit(s) who is transmitting • Post PTT-ID used at the end of voice transmission to indicate to the receiving unit(s) who was transmitting.

  • Page 26: Sending The Mdc1200 Message

    Operation Model L3149B C200 Advanced Desk Set Sending the MDC1200 Message When the desired unit ID or alias appears on the display, press MONITOR to ensure that the radio channel is not in use. When the channel is free, press the button or handset PTT bar.

  • Page 27: Select Call

    Model L3149B C200 Advanced Desk Set Operation Select Call Select Call is a special MDC1200 type that is used to selectively signal an individual unit or a group of units. To initiate a Select Call, the operator must press and hold the...

  • Page 28: Rs-232 Input Or Pc Control

    Operation Model L3149B C200 Advanced Desk Set A typical printout supported by the C200 is shown below. For these examples, the desk set’s unit ID is assumed to be 5678; the target unit’s ID is assumed to be 1234. The Line column and line numbers are added for discussion below.

  • Page 29: Mdc1200

    Model L3149B C200 Advanced Desk Set Operation MDC1200 MDC1200 allows the PC to direct the C200 to transmit a MDC1200 message using a preprogrammed alias or a specified unit ID. The behavior of the actual transmission is controlled by software programmed parameters.

  • Page 30: Paging

    Operation Model L3149B C200 Advanced Desk Set Example 2: To send a call alert to MDC1200 alias 1 (i.e. FIRE 100) do the following. Note that the alias number is as listed in the software under MDC1200 aliases. PC to C200: ‘^’, <CR>...

  • Page 31: Frequency Changing

    Model L3149B C200 Advanced Desk Set Operation Alias paging works similarly to MDC1200 signaling with the alias number being as listed in the programming software for page aliases. Frequency Changing Frequency changing allows the PC to direct the C200 to change the current transmit frequency to a newly specified transmit frequency such as F12.
  • Page 32 Operation Model L3149B C200 Advanced Desk Set The frequency constant is calculated as (using C syntax): MSW = 0x00ff & round (frequency * 8.192) >> 1 LSW = 0xFF00 & round (frequency * 8.192) >> 8 Therefore, to generate 1234 Hz followed by 567 Hz the frequency constants must first be calculated.

  • Page 33: Installation

    Installation Planning the Installation The following diagrams show examples of installations for the L3149B programmed for both tone (standard) or local control (L3147A) operation. Local Control (L3147A) Example Installation Diagram - Shown connected in parallel within one building. : The distance between the desk set and the radio must not exceed 1000 feet when programmed for...

  • Page 34: Mechanical Receipt Inspection

    Installation Model L3149B C200 Advanced Desk Set Tone Control (L3149B) Example Installation Diagram – Shown connected in parallel within one building Mechanical Receipt Inspection The desk sets are shipped in a cardboard container with inserts. Thoroughly inspect it as soon as possible after delivery.

  • Page 35: Equipment Required

    Model L3149B C200 Advanced Desk Set Installation The ground terminal must be connected to a high quality earth ground point to obtain maximum protection. Ideally, the ground point should originate at a 1/2-inch copper rod driven at least six feet into the soil with a No.

  • Page 36: Line Connections For The L3149B Desk Set

    Installation Model L3149B C200 Advanced Desk Set Line Connections for the L3149B Desk Set Connect the telephone line to the modular connector located on the back of the desk set. Telephone Line Pinout Pins Function Pin 1 Pin 2 4-wire TX +IN...

  • Page 37: Line Connections For Local Control (L3147A) Operation

    This operation requires PTT and monitor to be connected to J701 of the relay module in the base of the desk set as noted in the chart below. Additionally, if parallel L3149B Desk Sets (in local control mode) are to be used, the connection of PTT Sense and Monitor Sense allows proper operation of the system.

  • Page 38: Microphone Sensitivity Adjustments

    Installation Model L3149B C200 Advanced Desk Set Microphone Sensitivity Adjustments After connections have been made, the desk set must be configured for transmit and receive audio levels. These adjustments are made using the front panel buttons. The microphone sensitivity adjustment is used to compensate for different user voice levels and varied acoustical conditions.

  • Page 39: Relay Control

    Relay Control : The following optional features require relay control option equipment (Kit No. XRC0001A) on the Model L3149B. Maximum load ratings for each relay output are 1 A @ 125 V ac and 2 A @ 30 V E&M The XAC0008A Programming Software can be used to configure the L3149B for Local and E&M...

  • Page 40: Audio Accessory/Rs-232 Port

    Installation Model L3149B C200 Advanced Desk Set Audio Accessory/RS-232 Port The desk sets contains an 8-pin modular audio accessory port to provide audio accessory options. Possible accessories include desk microphone, gooseneck microphone, boom microphone, headset, or footswitch. The microphone input type is passive, with an input impedance of greater than 2k ohms and a nominal input level of −20 dBm.

  • Page 41: Level Adjustments And Diagnostics

    Model L3149B C200 Advanced Desk Set Installation Level Adjustments and Diagnostics The programming buttons, through , are used to navigate the menu for specific PROG 1/5 PROG 4/8 installations and to perform diagnostics. They are: • Line Output Level •...

  • Page 42: Reloading Factory Defaults

    Installation Model L3149B C200 Advanced Desk Set Reloading Factory Defaults Desk sets are shipped from the factory with default settings that meet most installation requirements. However, it is important to verify that these parameters are adjusted to meet your specific installation needs.

  • Page 43: Prog 2/6 - Line In Sensitivity

    Model L3149B C200 Advanced Desk Set Installation Using a Communications Service Analyzer, or other RF generator, inject a fully-quieted (e.g.1000 micro- volt) signal into the antenna port of the base station. Enable the RF generator’s 1 kHz tone, modulated at rated system deviation.

  • Page 44: Prog 2/6 - Dc Module Diagnostics

    Installation Model L3149B C200 Advanced Desk Set PROG 2/6 - DC Module Diagnostics This mode allows the dc board to be exercised with both positive and negative currents and sets the DCLOTL. The threshold for DCLOTL is adjustable, but is factory preset for most installations. The asterisk ( * ) is present in the lower right corner if the line voltage is above the preset DCLOTL threshold.

  • Page 45: Prog 3/7 - Rs-232 Diagnostic

    Model L3149B C200 Advanced Desk Set Installation PROG 3/7 – RS-232 Diagnostic This diagnostic exercises the RS-232 port TX and RX data. To run this test, disconnect anything connected to the programming connector on the back of the unit, and short pins 2 and 7 of the connector.

  • Page 46: Prog 4/8 - Tone Level Adjust

    Installation Model L3149B C200 Advanced Desk Set PROG 4/8 - Tone Level Adjust This mode allows adjustment of the levels of sidetone, the alert, and the page tones: • The sidetone level used for speaker tones can be adjusted to suit the user.

  • Page 47: Theory Of Operation

    Theory of Operation General Desk Set Overview The C200 Advanced Desk Set is a multi-processor design employing state-of-the-art DSP technology to achieve superior performance over typical analog and single-processor designs. This allows for ultimate flexibility in audio processing. The heart of the design consists of U1, the DSP; and U3, the microcontroller. The DSP is responsible for audio processing of receive and transmit audio.

  • Page 48: Microphone Audio

    Theory of Operation Model L3149B C200 Advanced Desk Set In addition to the transmit audio, data is combined with the transmit audio prior to line-out compensation at U11-3. U10-1 is the line-driver enable for the transmit audio. This provides for a 560 ohm transmit output impedance.

  • Page 49: Programming

    COM1, 2, 3 or 4 port on the computer can be used. Connections The L3149B must be connected to your PC with the 25-pin D-connector cable (Part No. XAC0004A) before the programming software can be used. Connect the cable to the COM 1, 2, 3 or 4 connector on the computer.

  • Page 50: Desk Set Parameters

    Programming Model L3149B C200 Advanced Desk Set Desk Set Parameters Date Format The date may be displayed in one of the following four ways on the desk set: • USA: month in numeral format; MM-DD (11-20) • European: month in text format; DD Month (20 Nov) •...

  • Page 51: Parameters - Line Configuration

    Model L3149B C200 Advanced Desk Set Programming Accessory Mic Bias The mic bias for the accessory connector should be enabled if an electric condenser mic is used for transmit audio. Enabling this parameter allows approximately 4 volts of mic bias to be applied to the accessory mic high input.
  • Page 52 Programming Model L3149B C200 Advanced Desk Set Type of Interface Select the type of interface depending upon the modules installed in the desk set: • Tone Control is available regardless of what hardware is installed. • If the relay I/O control module is installed, select E&M with Tone, E&M without Tone, or Local Control.

  • Page 53: Control Parameters

    Model L3149B C200 Advanced Desk Set Programming Control Parameters Guard Tone Frequency The guard tone frequency is available when the type of interface is Tone or Tone with E&M control. This parameter allows the selection of the guard tone frequency for transmit and receive. Different guard tone frequencies are available for installations requiring them or where paging tones within the guard tone notch are needed.

  • Page 54: Function Tones/Aliases

    Programming Model L3149B C200 Advanced Desk Set Monitor Frequency/Current When the type of interface is Tone, Tone with E&M, or DC control, this parameter selects the monitor frequency/current used when the monitor button is pressed. Parallel Mute Enabling this feature causes the unit to mute the speaker, not the handset, when a parallel unit is transmitting.

  • Page 55: Programmable Buttons

    Model L3149B C200 Advanced Desk Set Programming Programmable Buttons The Model L3149B Desk Set has four programmable buttons. Each may be assigned up to two functions - one with the button alone and one when pressed with the button. Since there is only one LED...
  • Page 56 Programming Model L3149B C200 Advanced Desk Set Quick MDC Programming a button for Quick MDC allows two possible uses of the button. The first possible configuration is the selection of manual MDC in the next field. This allows a single button to enter the MDC menu using the programmed call type and allow the operator to select the target ID or alias.

  • Page 57: Input/Output Relay Table

    Model L3149B C200 Advanced Desk Set Programming Input/Output Relay Table : This screen only appears if a relay board is present. The relay module consists of four physical relays and four inputs. Relays 1 and 4 are DPDT relays. Relays 2 and 3 are DPST relays. The relays are physically the same part, but I/O limitations of the module limit the number of connections to each relay.
  • Page 58 Programming Model L3149B C200 Advanced Desk Set PTT Sense When configured for local control and with parallel units, the operator is not allowed to transmit during the transmission of a parallel unit. This input allows the desk set to sense parallel transmissions and lock-out transmissions until the parallel transmission is over.

  • Page 59: Configure Paging

    Model L3149B C200 Advanced Desk Set Programming Monitor When the Type of Interface is Local control, a monitor closure is necessary to place the radio in to monitor mode. This monitor relay is configured as a normally open momentary relay and is asserted...

  • Page 60: Manual Paging

    Programming Model L3149B C200 Advanced Desk Set Manual Paging Page PTT Frequency If the system is configured such that pages should be transmitted on a particular channel, the page PTT frequency may be used. This parameter allows the selection of the page PTT frequency for all manual pages.

  • Page 61: Two-Tone Paging

    Model L3149B C200 Advanced Desk Set Programming Two-Tone Paging Two-Tone Codeplan Allows the selection of the Two-Tone Codeplan from the following list. Please refer to the Tone Group Frequency Chart and the Code Plan Chart below for the specifics for each codeplan.
  • Page 62 Programming Model L3149B C200 Advanced Desk Set Code Plans Chart The first digit indicates Chart A Group Number Source for the A tone. The second digit indicates Chart A Group Number Source for B tone. Code MSD Digit of 3 Digit Capcode...

  • Page 63: Plectron Paging

    Model L3149B C200 Advanced Desk Set Programming Preset Two-Tone Digits This allows up to three 2-tone paging digits to be preset and controls the number of digits the operator must enter. If two preset digits are entered, the operator is only allowed to enter the third digit. The valid range for each digit is 0-9.
  • Page 64 Programming Model L3149B C200 Advanced Desk Set Plectron Tone Group/Frequency Chart (in Hz) 3rd and 4th Digits Tone Group P1 Tone Group P2 1036 1082 1130 1180 1232 1287 1344 1403 1465 Tone Group P3 1530 1598 1669 1743 1820...

  • Page 65: 5-Tone Paging

    Model L3149B C200 Advanced Desk Set Programming 5-Tone Paging 5-Tone Paging Preamble Allows the selection of a 5-tone preamble number from the following list: : This parameter affects alias paging as well. Number Frequency Number Frequency 600 Hz 570 Hz...

  • Page 66: 1500 Paging

    Programming Model L3149B C200 Advanced Desk Set 1500 Paging 1500 Paging Tone Off Time Allows the selection of the length of the Tone Off Time for 1500 paging. The Tone On Time is as follows: Tone On Time = 100 ms – Tone Off Time.

  • Page 67: Configure Mdc1200

    Model L3149B C200 Advanced Desk Set Programming Configure MDC1200 MDC Feature Order This feature allows you to select which manual paging types or MDC types will be available on the C200. You may also determine the order in which the selected paging types appear.

  • Page 68: Mdc Flags

    Programming Model L3149B C200 Advanced Desk Set MDC Group ID The MDC Group ID is the RapidCall group ID of the unit. This ID is not unique to a particular unit, but to a group of units. It is used only when determining whether a specific RapidCall message is intended for itself.
  • Page 69 Model L3149B C200 Advanced Desk Set Programming Emergency Ack Enable This parameter enables/disables the generation of MDC1200 emergency, status and message acknowledgments. If enabled, the desk set acknowledges MDC1200 emergency, status and message messages. Only one desk set per system should be enabled to acknowledge emergencies, statuses and messages.

  • Page 70: Mdc Timers

    Programming Model L3149B C200 Advanced Desk Set MDC Timers DOS Coast Timer The data-operated squelch is used to mute receive audio after the receipt of MDC data. This parameter controls the length of time the speaker remains muted after a MDC1200 receive. The valid range for this parameter is 0–2000 ms in 10 ms increments.

  • Page 71: Mdc Printer Message Settings

    Model L3149B C200 Advanced Desk Set Programming MDC Printer Message Settings Allows the user to specify which incoming and outgoing MDC messages are logged to the printer. These settings can only be edited if the printer is enabled. Print Incoming Messages:...

  • Page 72: Alias Table

    Programming Model L3149B C200 Advanced Desk Set Alias Table The Alias Table allows storage of up to 250 distinct Paging or MDC profiles in the C200. This screen allows you to Add, Delete and Change entries. All aliases currently entered in the table can be seen in the Table Entries field.
  • Page 73 Model L3149B C200 Advanced Desk Set Programming Auto PTT Frequency This parameter selects the page PTT frequency for each paging alias. This allows the page to be sent on the same channel each time the page is sent. Keep Page PTT Freq After Page Normally, the unit reverts to the set function tone after a page is complete and talk time expires.
  • Page 74 Programming Model L3149B C200 Advanced Desk Set Group Paging Allows sequential execution of up to six of the paging entries in the alias table. Only one group can be allowed to be a member of another group. The group entry will always be the last entry in a group.

  • Page 75: Troubleshooting

    Ensure that the proper guard tone and function tones/dc-current parameters the transmitter to key. have been programmed with the programming software. Ensure that the line out level is properly adjusted for the L3149B. Ensure that the remote adapter is configured and connected to the radio properly.

  • Page 76: Fuse Replacement

    Troubleshooting Model L3149B C200 Advanced Desk Set Problem Possible Solution Local Control (L3147A Mode) Problems The desk set will not cause Ensure that the PTT relay is properly programmed with the XAC0008A the transmitter to key. Programming Software. Ensure that the PTT relay has a ground connection.

  • Page 77: Schematics

    Schematics...

  • Page 78: Desk Set Line Interface Schematic Diagram - Sheet 1

    Schematics Model L3149B C200 Advanced Desk Set Desk Set Line Interface Schematic Diagram - Sheet 1...

  • Page 79: Desk Set User Audio I/O Schematic Diagram - Sheet 2

    Model L3149B C200 Advanced Desk Set Schematics Desk Set User Audio I/O Schematic Diagram - Sheet 2...

  • Page 80: Desk Set Control Microprocessor I/O Schematic Diagram - Sheet 3

    Schematics Model L3149B C200 Advanced Desk Set Desk Set Control Microprocessor I/O Schematic Diagram - Sheet 3...

  • Page 81: Desk Set Dsp Block Schematic Diagram - Sheet 4

    Model L3149B C200 Advanced Desk Set Schematics Desk Set DSP Block Schematic Diagram - Sheet 4...

  • Page 82: Desk Set Tone Keypanel Schematic Diagram - Sheet 5

    Schematics Model L3149B C200 Advanced Desk Set Desk Set Tone Keypanel Schematic Diagram - Sheet 5...

  • Page 83: Desk Set Power Supply Schematic Diagram - Sheet 6

    Model L3149B C200 Advanced Desk Set Schematics Desk Set Power Supply Schematic Diagram - Sheet 6...

  • Page 84: Desk Set Signaling Section Schematic Diagram - Sheet 7

    Schematics Model L3149B C200 Advanced Desk Set Desk Set Signaling Section Schematic Diagram - Sheet 7...

  • Page 85: Relay I/O Option Schematic Diagram (Xrc0001A)

    Model L3149B C200 Advanced Desk Set Schematics Relay I/O Option Schematic Diagram (XRC0001A)
  • Page 86 Schematics Model L3149B C200 Advanced Desk Set OTES...

  • Page 87: Circuit Boards

    Circuit Boards...

  • Page 88: Main Unit Dtd Circuit Board

    Circuit Boards Model L3149B C200 Advanced Desk Set Main Unit DTD Circuit Board...

  • Page 89: Main Unit Power And Line Circuit Board

    Model L3149B C200 Advanced Desk Set Circuit Boards Main Unit Power and Line Circuit Board...

  • Page 90: Relay I/O Option Circuit Board

    Circuit Boards Model L3149B C200 Advanced Desk Set Relay I/O Option Circuit Board...

  • Page 91: Definitions And Acronyms

    Definitions and Acronyms Term Definition Carrier squelch Clear-to-send DPDT Dual-Pole Double Throw DPST Dual-Pole Single Throw Digital Private Line - a system analogous to Private Line but using low speed digital signaling instead of subaudible tones. HLGT High level guard tone Low level guard tone LLGT Line Operated Transmit Light...
  • Page 92 Notes Model L3149B C200 Advanced Desk Set...

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