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ZETRON 748 Technical Manual

Repeater manager/teleconnect
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ZETRON
Model 748
Repeater Manager / Teleconnect
Technical Manual
Part No. 025-9368H
Copyright © 2002 by Zetron, Inc.
All Rights Reserved

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  • Page 1 ZETRON Model 748 Repeater Manager / Teleconnect Technical Manual Part No. 025-9368H Copyright © 2002 by Zetron, Inc. All Rights Reserved...
  • Page 3 Zetron's option, after return of such equipment by buyer to Zetron or its representative. Shipment shall be paid for by the buyer. No credit shall be allowed for work performed by the buyer. Equipment found to not be defective shall be returned at buyer's expense and testing and handling expense shall be borne by the buyer.
  • Page 4 WARNING: The Model 748 requires 12 volt-DC, at 700 ma supplied by the radio station power supply, or a CE approved 9 to 12 volt-AC source rated at 11 watts. Other usage will INVALIDATE any APPROVAL given to this apparatus.
  • Page 5 If the Model 748 is connected to the Public Switch Telephone Network, the telephone number must not be made public. The Model 748 is not suitable for connection as an extension to a pay phone, or for use with a 1 + 1 carrier system.
  • Page 6 INSTALLATION AND OPERATIONAL WARNINGS (Continued) When the Model 748 will be connected to a PBX, the following statements apply: The apparatus (Model 748) is approved for use as an extension instrument to compatible PBXs. The supplier of the apparatus should be consulted for an up to date list of PBXs with which the apparatus is compatible.
  • Page 7 INSTALLATION AND OPERATIONAL WARNINGS (Continued) WARNING: For units which have the voice prompts option installed, the following caution applies: CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used battery according to the manufacturer's instructions.
  • Page 8 27-29 Campbell Court, Redmond, WA 98052, USA Campbell Road, Bramley, TADLEY, Basingstoke, RG26 5EG, UK Australian Representative: Zetron Australasia Pty Ltd., 3/87 Webster Road, Stafford QLD 4053 Australia Declares that for the Product: Model 2200 Paging System 901-9205, 901-9305 In Application of Council Directives:...

  • Page 9: Table Of Contents

    Enhanced Toll Restriction...................... 3 Interconnect Hog Mode ......................4 Scheduled Telco Access......................4 INTERCONNECT OPTIONS ......................4 Model 748, Basic ........................4 Model 748, Selcall ......................... 4 Model 748, Roamer........................ 4 Call Detail Option ........................4 Voice Prompts Option......................5 Dial Click Option ........................

  • Page 10: Contents

    Contents Telephone to Mobile Calls ..................... 31 Telephone-to-Talkback Mobile Calls..................31 Telephone-to-Tone-Only Pager Calls ..................32 Telephone-to-Tone-and-Voice Pager Calls................32 MOBILE ORIGINATED CALLS ....................... 33 Call Setup (Mobile)........................ 33 Mobile-to-Telephone ......................34 Mobile-to-Mobile........................34 ANI Mobile-Repeat........................ 34 DISCONNECT TONES........................35 ENHANCED TOLL RESTRICTION....................
  • Page 11 Billing File Formats ....................... 69 FILE TRANSFER ACCESS MODE ....................74 Script Files for ProComm Plus ....................75 DETAILED LISTING MENU ......................78 HOW TO PROGRAM ANIs IN THE MODEL 748................80 Short Sign-on ......................... 80 Multi-Digit ANI ........................81 ANI Conflicts......................... 81 SYSTEM EXAMPLES ........................
  • Page 12 Contents DTMF-t Collect Time ......................121 DTMF-t Reset Time....................... 122 DTMF-t Reset Digit ....................... 123 DTMF Interdigit Time ......................124 Enabled ..........................125 Equipment Type........................126 Emergency Prefix........................128 Fast ANI Access........................129 Hookflash Mode........................130 ID Call Sign - ID Interval - ID Speed ..................131 Interconnect Hog Mode - Interconnect Hog Time ..............
  • Page 13 FIVE-TONE SIGNALING ........................233 Five-Tone Groups/Timing ..................... 233 VOICE PROMPTS ..........................234 DTMF COMMANDS .......................... 235 EXPERT COMMANDS ........................237 Model 748 User Programming Log Sheet.................... 238 MODEL 748 PROGRAMMING MENU TREE.................. 239 VIII SPECIFICATIONS............................. 241 PHYSICAL SPECIFICATIONS......................241 DISPATCH CAPACITY ........................241 INTERCONNECT CAPACITY ......................
  • Page 14 Contents DECODER SPECIFICATIONS ......................242 SIGNALING SPECIFICATIONS......................242 TELEPHONE INTERFACE SPECIFICATIONS ................242 RADIO INTERFACE SPECIFICATIONS..................243 ADDITIONAL SPECIFICATIONS ....................243 025-9368H...

  • Page 15: I Introduction

    As a repeater panel, the Model 748 supports encoding and decoding of all 50 CTCSS tones and 104 DCS codes for dispatch. It also includes airtime tracking of all tones/codes, a Morse ID for each tone/code, and Zetron's unique hog mode timers to prevent “airtime hogs”...

  • Page 16: System Features

    Introduction SYSTEM FEATURES • Programmable via RS232, internal 1200/2400 baud modem • Setup and user enable/disable via DTMF over the air or over the phone • Database upload/download via PC using XMODEM protocol • Billing information download via PC using XMODEM protocol Interconnect (System) •...

  • Page 17: Repeater Panel

    The 748 monitors the dialed digits and can determine an inside call on the PBX from a PSTN call. Based on the call type, the 748 knows how and when to enforce the toll restrict programming.

  • Page 18: Interconnect Hog Mode

    INTERCONNECT OPTIONS Model 748, Basic The Basic version of the Model 748 (901-9466) is the standard or base model in the 748 line. It comes with 154 user repeater panel, 99 user ANI database, CTCSS/DCS encode/decode, Airtime accumulation, 99 autodials, XMODEM upload/download, enhanced toll restriction.

  • Page 19: Voice Prompts Option

    These kits provide alternative interface hardware for those who require them to match their equipment. • Relay Kit (950-9752) - Any version of the Model 748 may be equipped with a Relay Kit Option. This kit provides relay contacts for PTT and Auxiliary output. Standard units have a FET to ground for these outputs.

  • Page 20: About This Manual

    Introduction ABOUT THIS MANUAL In this manual, it is assumed that all the options of the Model 748 are installed. To help you install and operate the Model 748 as quickly as possible, this manual includes the following sections: Section 1 This section is an introduction to the Model 748, its features and available options.

  • Page 21: Ii Installation

    Connections to the transmitter and receiver are grouped on a detachable 15 pin connector on the rear of the Model 748 for ease of installation. The Model 748 includes installation test modes accessible with a Touch-Tone phone , when you call in on the phone line, to aid in installation.

  • Page 22: Typical Connections

    Installation TYPICAL CONNECTIONS Figure 1 provides a graphic presentation of a typical Model 748 to transmitter/receiver connection. Figure 2 shows the Model 748 cable connector pin numbers and descriptions. STATION SUPPLY MODEL 748 AC/DC Input +12 volts DC Ground Ground ♦...

  • Page 23: Installation Procedure

    B position for CTCSS only decode. JP29 should be in the A position. 7. COR INPUT: The Model 748 requires a signal from the receiver to indicate when a mobile is transmitting. This signal is derived from the receiver squelch circuit, and is sometimes called Carrier-Operated-Relay (COR) or similar names such as RUS, CAS, or COS.
  • Page 24 9 to 12 VAC, at 11 watts, can be used. When using an AC source connections should be made to J6 terminals 1 and 2. The Model 748 is internally fused with a 2-ampere fast-blow fuse. Verify that the Power LED lights when power is applied.

  • Page 25: Resetting To Factory Defaults

    Installation RESETTING TO FACTORY DEFAULTS There are three ways to reset the Model 748's System database to factory defaults. The first two require that you know the Program Access code, the third does not. 1) Using CRT or Terminal programming (modem or local terminal).

  • Page 26: Tests And Adjustments

    250 Hz tone will be generated out the transmitter. Each time any DTMF digit is pressed other than “#” or “*”, the Model 748 will cycle to the next tone in the list (250, 500, 1K, 2K, 3K).
  • Page 27 Enter the correct function code 113#. Adjusting Repeat audio: The Model 748 now keys up and remains keyed for the duration of the test. The repeat audio path is gated with COR detection. R59 should now be used to adjust the repeat audio for unity gain through the Model 748.
  • Page 28 8. HYBRID BALANCE ADJUSTMENT: This purpose of this adjustment is to balance or match the impedance of Model 748 to the phone circuit to which it will be connected. This is to adjust for maximum return loss (minimize reflected signal) of the transmit and receive audio signals.
  • Page 29 Using a DTMF telephone or radio: Press “#” to leave Hybrid balance adjust test. The Model 748 will then terminate the phone connection. 9. DIAL CLICK ADJUSTMENTS: If you do not have the Dial Click option (950-9589) installed in your Model 748 you can skip performing this adjustment.
  • Page 30 Your assistant should start dialing a pre-determined sequence or pattern of digits with a rotary phone. The Model 748 will key the transmitter and send the decoded digits out in slow Morse code. Adjust R6 on the Dial Click card (702-9424) to increase or decrease the sensitivity of the decoder card.

  • Page 31: Final Checks Before Leaving The Site

    1. Have someone call the unit and access the modem programming. Verify errors are not present during modem communication. 2. Place a mobile to telephone call through the Model 748 and verify the audio levels are set correctly. Place a telephone to mobile call also to verify level setting and DTMF decoding in both directions.

  • Page 32: Icom Ic-Rp1510 Repeater

    Installation Icom IC-RP1510 Repeater For: Zetron Model 38, 38-MAX, 39-MAX, 45B, 48B, 48-MAX, 735, 745, 748 ICOM IC-RP1510 repeater Using: 709-7112 Generic radio cable ZETRON END RADIO END Function Color Connections/Notes 12 volts AC/DC in Anode DC, power bus 12 volts AC input...

  • Page 33: Kenwood Tkr-720 / Tkr-820 Repeater

    Installation Kenwood TKR-720 / TKR-820 Repeater For: Zetron Model 38, 38-MAX, 39-MAX, 45B, 48B, 48-MAX, 735, 745, 748 Kenwood TKR-720 / TKR-820 repeater Using: 709-7112 Generic radio cable ZETRON END RADIO END Function Color Connection / notes 12 volts AC/DC in...

  • Page 34: Motorola Gr300 Repeater (Or A Pair Of Gm300 Radios)

    Input High 3. Install the cable (709-7264) from the 15-pin connector on the Zetron controller to the appropriate 16-pin connectors on the rear of the Radius mobiles. Remove the power cable from the mobile being used as a receiver. CAUTION! Observe correct polarity (wire colors) while connecting power cables.

  • Page 35: Tait T800 Series Repeater

    Installation Tait T800 Series Repeater For: Zetron Model 38, 38-MAX, 39-MAX, 45B, 48B, 48-MAX, 735, 745, 748 Tait T800 Series Repeater Using: 709-7112 Generic radio cable ZETRON END RADIO END Function Color Connection / notes 12 volts AC/DC in TB1-13 +13.8V...

  • Page 36: Tait T300 Series Radio

    Installation Tait T300 Series Radio For: Zetron Model 38, 38-MAX, 39-MAX, 45B, 48B, 48-MAX, 735, 745, 748 Tait T300 series base station Direct plug in replacement for Tait T311 panel ZETRON END RADIO END (25 way “D” range female socket)

  • Page 37: In Case Of Difficulty

    In case of installation difficulty, call Zetron for a Model 748 Applications Support Engineer. Please have the serial number of the unit and/or the Zetron order number when you call. If the call is made from the installation site by the installer or radio technician, the problem can usually be solved over the phone.

  • Page 38: Upgrading To A New Version Of Software

    Installation Upgrading to a New Version of Software From time to time, new revisions of software are released. These can range from significant changes adding new or enhanced features to minor changes correcting documented defects. The procedure outlined below will allow you to perform a successful upgrade and retain your existing programming.

  • Page 39: Installing New Eproms

    6. Carefully examine all pins of each IC. Make sure pins are aligned in the sockets, fully inserted and not bent out or under. 7. Turn on power to the Model 748 and make sure that the front panel gives a normal display. If all LEDs are on, there is a problem.

  • Page 40: Call Detail Option (950-9587) Installation

    Installation Call Detail Option (950-9587) Installation These installation instructions describe installing the Call Detail option (950-9587) into a Model 748. You should find the following parts included with the kit: Quantity Part Number Description Location 321-0751 601-0661 (ASIC) 321-1001 128K x 8 RAM...

  • Page 41: Voice Prompts Option (950-9588) Installation

    Installation Voice Prompts Option (950-9588) Installation These installation instructions describe installing the Voice Prompts option (950-9588) into a Model 748. You should find the following parts included with the kit: Quantity Part Number Description Location 220-0106 #4-40 x 5/16 pan Philips...

  • Page 42: Dial Click Option (950-9589) Installation

    Installation Dial Click Option (950-9589) Installation These installation instructions describe installing the Dial Click option (950-9589) into a Model 748. You should find the following parts included with the kit: Quantity Part Number Description Location 220-0106 #4-40 x 5/16 pan Philips...

  • Page 43: Iii Operation

    These types of calls are “Phone-to-Mobile” and “Mobile-to-Phone” calls. Radios or mobiles can also place and receive calls to other radios or mobiles through the Model 748. These types of calls are “Mobile-to-Mobile” calls. Radios or mobiles can gain validated repeater access through the Model 748 by using DTMF access codes.

  • Page 44: Telco Originated Calls

    (two or three digits) for the person calling in. ANI numbers are used by radios or mobiles in gaining access to the Model 748 from the radio channel. These can be a single DTMF digit (short sign-on) or a DTMF sequence up to 10 digits in length.

  • Page 45: Telephone To Mobile Calls

    (radio) before the Mobile answer time expires or the call will be disconnected. The Model 748 will ring on the channel, and to the telephone for the specified Ringouts sent to mobile. If the mobile does not answer, the “your call cannot be processed at this time” voice prompt (prompt #4) is sent to the telco and the call is disconnected.

  • Page 46: Telephone-To-Tone-Only Pager Calls

    Operation Telephone-to-Tone-Only Pager Calls The caller first gains access to the Model 748 (see “Call Setup (Telco)” earlier in this section). A valid user number or ANI has been entered, the Model 748 has keyed the transmitter, any required selective calling sequence (paging tones) will now be sent, the caller will hear one ring while the paging tones are being sent.

  • Page 47: Mobile Originated Calls

    (five digits per second if Fast ANI access is enabled). If the Model 748 finds a valid ANI, but it is not enabled, the Model 748 ignores the ANI. If the time restriction (Scheduled telco access) is not met for interconnect, the “interconnect not available at this time”...

  • Page 48: Mobile-To-Telephone

    The mobile first gains access to the Model 748 (see “Call Setup (Mobile)” earlier in this section). The Model 748 will prompt the caller to overdial a number. This will be either a prompt tone (Dial tone or 925 Hz beep) or a voice prompt (prompt #2). The caller then overdials the number (user number or Access ANI) of the user (radio) they wish to contact.

  • Page 49: Disconnect Tones

    When the telephone party disconnects the call with a “#” or “#0”, a long dual tone will be sent to the telephone and mobile. If the call is terminated by the Model 748 because it detects a busy signal or second dial tone, three fast busy tones are sent to the mobile. These diagnostic tones allow the user to determine the source of the disconnection.

  • Page 50: Enhanced Toll Restriction

    7 digit toll calls (non 1+) and 10 digit local calls. Based on the digits received from the mobile, the Model 748 knows how many digits are required to place the phone call, and when to enable mobile to phone audio. This eliminates the need for timers or termination digits at the end of dialing.

  • Page 51: Universal Plan

    It uses two prefix tables (up to 10 entries each) to define a filter or plan. As digits are dialed, the Model 748 will scan the entries in the table for a match against the dialed digits.

  • Page 52: General Features

    DTMF is regenerated over the channel. Once the first digit of the number has been entered, the normal DTMF time out takes affect for interdigit timing. This allows for the Model 748 to have a way out if the mobile goes away during dialing. To terminate early (less than 14 digits) the entry of calling card digits, enter a DTMF “*”...
  • Page 53 PSTN Feature Code When the phone line is first taken off hook for a mobile to phone call, the Model 748 can send a pre- defined string of DTMF before any other digits are dialed by the mobile. This is typically used to disable Call waiting or Caller ID function.

  • Page 54: Pbx Operation

    External Calls When a mobile dials the first digit and it is used to select an outside line, the Model 748 flags the call as a PSTN call. The first or leading digit (used to select the outside line) is now ignored as if it was never dialed.

  • Page 55: Hook Flash

    Operation Hook Flash The Model 748 can support the mobile in performing a hook flash on the phone line once in the conversation mode. One of the more typical installations where hook flash is used is on PBX installations. This is enabled on a per user basis. On PSTN calls a user’s Toll restrict type must be set to “None”...

  • Page 56: Access And Disconnect Anis

    Autodials can also be used for toll restrictions in the Model 748. When a user (radio) has Toll restrict type set to “AutoD,” that user can only access telephone numbers in the autodial table. You would typically set Autodial mode to a block of numbers.

  • Page 57: Access Ani

    Operation Access ANI Sign-on in the Model 748 consists of the user's Access ANI code followed by a steering digit (if more than one privilege is enabled). Once a valid first digit has been received, the remaining digits must be received within the set timing requirements. If Fast ANI access is disabled (default), digits must be at least one digit per second.

  • Page 58: Disconnect Ani

    SCHEDULED TELCO ACCESS This feature is included in the Selcall and Roamer versions of the Model 748. It allows the system operator to give priority to different user groups based on time of day and day of the week. If you restrict interconnect to normal business hours, 9:00 AM to 5:00 PM for Monday through Friday, you can limit access to the interconnect outside of these hours on a per user (radio) basis.

  • Page 59: Page Forward

    Each interconnect user can have his unanswered calls forwarded to a second user in the database. When a call comes in for a particular user (radio), the Model 748 tries to reach him. If the called mobile does not answer, and he has a Page forward user programmed, the Model 748 will try to call that user (radio) next.

  • Page 60: Reserved Tone

    The first keyup of a validated (enabled) tone/code uses Initial TX hold time for the transmit hold time. All subsequent keyups (until the transmit hold time expires and the Model 748 unkeys) of the validated tone uses the TX hold time for the decoded tone/code.

  • Page 61: Hog Mode

    Carrier Squelch Repeat The Model 748 can act as a carrier squelch repeater panel. Upon seeing carrier, the Model 748 will key the transmitter and allow repeat audio. If a sub-audible tone/code is detected, it will revert to the programming for the detected sub-audible tone/code.

  • Page 62: Call Setup

    (originating site) responds by over dialing a user number. This then setups up a Phone-to-Mobile call in area 51 from the Model 748 in area 52. Mobiles in the called user group will hear ringing and can just key up to answer (PTT to answer). We have now established a link between two units of the same dispatch group on two different sites through the PSTN.

  • Page 63: Sub-Audible Only

    Gateway call to the other site. To initiate a Gateway call, switch to channel 2 and key up for 3-plus seconds and then unkey. The Model 748 will respond by taking a phone line off-hook, and executing a forced autodial. The originating mobile will hear the beeps (from dialing) and switch back to channel 1 (normal dispatch channel).

  • Page 64: Call Clear Down

    Since two Model 748's are now handling the call, either one is capable of initiating call clear down, and will send the telco disconnect code to the other.

  • Page 65: How To Program It

    Autodials must be programmed for each of the four sites. Autodial 21 holds the phone number for the Model 748 at Site-1, Autodial 24 holds the phone number for Site-4. If it is always a toll call or always a local call from any one site to any other, then phone number strings stored in the autodials won’t be a site specific item.

  • Page 66: Operation

    Interconnect User database and Repeater Panel database). Now we can upload that programming into the three other Model 748’s in the system. Once this has been accomplished we can go back into each unit and make the few required site specific changes to the programming.
  • Page 67 Page Forward User in the user programming. Following our example user group this would be User 50. The Model 748 at Site-3 now keys the transmitter and issues a single ringout on the channel (at Site-3). The mobile on Site-1 hears a single ringback followed by the go ahead prompt (short low/high/low prompt) indicating that the audio path from Site-1 to Site-3 has been opened.
  • Page 68 Operation Notes: 025-9368H...

  • Page 69: Iv Programming

    English. You may find that you don't even need the manual! You can connect to a Model 748 for programming either locally through the RS-232 port or remotely using the internal modem. All system and user programming is done with a terminal or computer running terminal emulation software.

  • Page 70: Xon / Xoff Protocol

    ASCII serial communications protocol. Only three wires need to be connected from your terminal to the serial I/O connector on the Model 748: Tx data, Rx data and Ground. Set the terminal for 8 bits per character, no parity bit, and 1 stop bit (see the reference manual for the terminal you are using).

  • Page 71: Typical Connection To A Computer Or Video Terminal

    CTS, jumper to RTS No connect DSR, jumper to DTR No connect DTR, jumper to DSR The following pre-wired cables for popular computers and terminals are available from Zetron supporting the Zetron configuration. Part # Description 709-7027 RS-232 interface cable, DB-25P (terminal compatible)

  • Page 72: Model 748 Menu Structure

    Menu Figure 5. Model 748 Menu Structure The Model 748 incorporates 14 individual programming menus or screens into a structured menu system. Each menu contains groups of parameters that functionally relate to each other. Some of the menus are sub-grouped together to emphasize the functional relationship between the menus. To enter the program mode, press .

  • Page 73: Programming Conventions

    Numerical data is displayed in the units of measure for that data. When changing numerical data, you enter data using the same units of measure. A valid data range for that data will be displayed. The Model 748 will “BEEP” if the data entered is out of range. Pressing ENTER without entering any data will not change the current value.

  • Page 74: Convenience Features

    ENTER CTCSS/DCS programming: CTCSS tones are entered in Hertz. Just enter the first three digits of the tone. The Model 748 will figure out the rest. See “CTCSS Tones” in Section 7 for a complete table of frequencies. DCS codes are entered directly by prefacing the octal code with “D”. See “Digital Squelch Codes”...

  • Page 75: Interconnect Only

    Set the CTCSS encode and decode for 100.0 Hz. Key up and send a DTMF “*” for greater than 500 msec. Unkey. Model 748 will key the transmitter and the seize the phone line. You should hear dial tone from the Central Office. Dial a local telephone number.

  • Page 76: Dispatch Only

    CTCSS encode and decode for 127.3 Hz. Key up and the Model 748 will key the transmitter, open the repeat audio path and encode 127.3 Hz. Unkey the radio, the Model 748 will stop encoding 127.3 Hz. After 2 seconds, the 748 will drop the transmitter.

  • Page 77: Interconnect And Dispatch

    We now have a user with an ANI of “*45” with privileges of Mobile-phone, Phone-to-Mobile, Mobile-to-Mobile and Dispatch operations. Program a DTMF equipped radio for the proper transmit and receive frequencies that correspond to the repeater that the Model 748 is installed on. Set the DCS encode and decode for 023.
  • Page 78 Hz (our interconnect only user from the first example) and send ringing. Key up with 100.0 Hz and send a DTMF “*” for greater than 500 msec to answer. The Model 748 will now switch to D023 for encode. You are now in the conversation mode, radio to radio, with the Model 748 doing the proper tone/code translation.

  • Page 79: Accessing A Model 748 By Modem

    CCITT V.22bis (2400 baud) modulation standards in both answer and originate modes of operation. The typical method for remote access is to call the Model 748 from the phone side. Once it has answered the phone line, wait for the overdial prompt and then dial the program access code. This will set the internal modem of the Model 748 to answer mode, which then responds with a CCITT V.25 answer sequence.

  • Page 80: Terminal Emulation Mode Example

    Each comma inserts two seconds of delay. The idea is you want enough delay to make sure that the Model 748 has answered the line and the audio path has been established in both directions. You should be able to send the DTMF over any voice prompt or overdial prompt tone.

  • Page 81: Using The Terminal In Ms Windows

    The Terminal Application that comes in Microsoft Windows V3.1 can be used to communicate with the Model 748. It can be used for programming or used to perform file transfers. The default location for Terminal is in the Access folder.
  • Page 82 Note that once a download from the Model 748 has been started, it will take up to 20 seconds for the two machines to agree to start the transfer. This is normal. The Model 748 supports Xmodem (checksum).

  • Page 83: Device Configuration And Billing Data

    Model 748 -- V1.00 S/N 101 SITE: BLACKNOSE MTN SITE 748 AA 09:07 09/01/95 4 1 of the header identifies the unit (Model 748), the software version (V1.00), and the serial number (S/N 101). 2 prints the Site ID string programmed into the unit.
  • Page 84 Programming - Following the three-line header are the billing records. Each line contains one record. ECORDS Each record is terminated with (13) (10). Each field in a record is delimited with an ASCII space (32). Each record begins with a letter indicating record type. See Table 6 for a description of the fields in a record.
  • Page 85 Programming A 002 M Y P 00:21:37 = ANI Airtime = User number = Mobile equipment type = User is currently enabled = Airtime record is Prepay 00:21:37 = Airtime available in HH:MM:SS format A 099 P Y A 13 = ANI Airtime = User number = Pager equipment type...
  • Page 86 Programming = Mobile equipment type (see Table 1) = Call qualifier code indicates a normal call (see Table 1) 11:20 19/01/95 = time/date of call origination 8306363 = telephone number dialed = Call type code indicates mobile originated (see Table 1) 000:28 = duration of call in MMM:SS format *8001...
  • Page 87 Programming D 099 M D 08:34 19/01/95 Invalid entry M 000:08 *099 = Call Detail record = ANI user number to whom call is billed (originating mobile) = Mobile equipment type = Call qualifier code indicates invalid number overdialed 08:34 19/01/95 = time/date of call origination Invalid entry = Comment on call termination...

  • Page 88: File Transfer Access Mode

    Upon the successful completion of a command, the Model 748 respond by sending the ASCII string “OK <CR> <LF>”, indicating that it is now ready for the next command. Unrecognized commands are responded to with the ASCII string “<NAK> (15) <CR>...

  • Page 89: Script Files For Procomm Plus

    File Transfer Access Mode (good-bye) RESPONSE TO THE “WHO” COMMAND: In response to the WHO command (ASCII 99), the Model 748 returns a string of ASCII characters similar to the following: 748 101 1.20 S 154 D 1.10 1.10 1.10 43...
  • Page 90 TRANSMIT “20^M” ;SEND “DOWNLOAD SYSTEM DATABASE” COMMAND GETFILE XMODEM “SYSTEM.DBS” ;RECEIVE SYSTEM DATABASE FILE WAITFOR “OK^M^J” ;WAIT FOR AN “OK” FROM THE MODEL 748 TRANSMIT “21^M” ;SEND “DOWNLAOD ANI USER DATABASE” COMMAND GETFILE XMODEM “ANIUSR.DBS” ;RECEIVE ANI USER DATABASE WAITFOR “OK^M^J”...
  • Page 91 WAITFOR “CONNECT 2400^M^J” ;WAIT FOR MODEM TO CONNECT TRANSMIT “^M” ;SEND <CR> TO MODEL 748 WAITFOR “ENTER PASSWORD ===>“ ;WAIT FOR PASSWORD STRING FROM MODEL 748 TRANSMIT UNIT_PASSWORD ;SEND DATA TRANSFER PASSWORD WAITFOR “^F” ;RECEIVE <ACK> FROM MODEL 748 TRANSMIT “30^M”...

  • Page 92: Detailed Listing Menu

    An example of the start of the System database listing is shown here. Each menu in turn is printed with a single item on each line. Each menu in the listing is separated by its title. Model 748 -- V1.20 S/N 101 13:54 15/08/96 SITE: RATTLESNAKE MTN SITE System Database V1.10...
  • Page 93 Programming Table 8. ANI User Listing Key Menu Item Description Enabled Y = enabled, n = disabled Scheduled Telco Access Y = enabled, n = disabled Call limit time Y = extended, n = 3 minutes CTCSS Drop mode Y = enabled, n = disabled Mobile activity timer Y = enabled, n = disabled Hookflash mode...

  • Page 94: How To Program Anis In The Model 748

    Model 748. In these cases the user training can be fairly good, and at the same time there will be less need for security or air time tracking and accounting. The other common scenario is the commercial radio system (community repeaters, RCCs, etc.) where...

  • Page 95: Multi-Digit Ani

    ANI conflicts occur when one ANI code could be mistaken for another. Due to the flexibility of ANI programming in the Model 748, an understanding of how conflicts can arise is important. Every multi-digit ANI is checked against the existing database before being accepted into the database.

  • Page 96: System Examples

    Wild ANIs present a unique twist to defining what is a conflict and what is not. Wild ANI allows a block or range of sequential ANIs to access the Model 748 under a single user (radio) entry. To exclude a sub-range of that block means that a possible conflict exists. The Model 748 accommodates this in its conflict checking routine by doing a digit for digit comparison.
  • Page 97 • Security Dial 50 for Security We now have completed the necessary planning, prior to programming the Model 748 to support our three user groups. First we will enable dispatch operation for Maintenance and Security in the Repeater Panel User database. Next we will program the Interconnect User database to support short sign-on.
  • Page 98 Second, since we are on a PBX, we need to set PBX outside line digit to the digit(s) required to place an outside phone call. This is in the Interconnect Telco System menu. The Model 748 will now allow inside calls to be placed (typically three digits) with no restrictions. Outside calls (those that start with the PBX outside line digit to follow all the normal toll restriction rules.
  • Page 99 “*” + 127.3 Hz as User 10 (maintenance) and originate a call on the phone line. The Model 748 will then key up with 127.3 Hz encode and allow the dial tone from the PBX to pass out on the...

  • Page 100: Multi-Digit Ani

    Manufacturing needs to contact security to open a storage area. To reach security on the radio, key the radio and press “7” for greater than 500 msec and the unkey. The Model 748 will see “7” + 74.4 Hz as User 21 (manufacturing) and originate a mobile-to-mobile call. The Model 748 will key up with 74.4 Hz and send back the Overdial prompt (default is an 925 Hz beep).
  • Page 101 Programming In general users are knowledgeable and receive any training as required. Both customers on this system are sub-contractors in the building trades and have similar needs. The main office needs to reach individual crews for job scheduling and changes. Individual crews need to reach the main office to arrange for delivery of materials.
  • Page 102 Programming For user group 1040, we first set the User range for “10 - 21”. We can now set Enabled to “Yes”, Mobile-to-Mobile to “Enabled” and Selcall format to “DTMF”. INTERCONNECT USER MENU 1 - User range: 10 - 21 16 - Call limit time: 03 mins 2 - Enabled: Yes 17 - Call detail logging: All...

  • Page 103: Steering Digit Applications

    ANI key on the microphone. The radio keys up and sends an ANI of “104012”. The Model 748 will see “104012” + 103.5 Hz as User 12. The Model 748 will then key up with 103.5 and issue the Steering digit prompt (default is dial tone) and wait five seconds for a digit.
  • Page 104 Programming Our example user needs to receive Phone-to-Mobile calls, place Mobile-to-Phone and Mobile-to- Mobile calls. Our user has an Access ANI of 304025 and uses “*” to answer calls. Overdial on Phone-to-mobile and Mobile-to-mobile calls directed to our user is 25. Trailing Steering Digit INTERCONNECT USER MENU 1 - User range: 25...
  • Page 105 Programming Leading Steering Digit To support leading steering digits in our example requires that we put the user (radio) in the database twice, once for each mobile originate function. INTERCONNECT USER MENU 1 - User range: 25 16 - Call limit time: 03 mins 2 - Enabled: Yes 17 - Call detail logging: All 3 - Access ANI: *304025...

  • Page 106: Wild Ani

    • Valid ANI digits are 0..9, A, B, C, D, *, # (* = E, # = F) Since the Model 748 supports all 16 DTMF tone pairs you need to look at a range of ANI numbers as Hexadecimal numbering (Base16) not Decimal numbering (Base10).
  • Page 107 Programming A numbering plan for ANIs was established; seven digits in length, the first four indicate Site ID, and the last three indicate a specific radio. 1040 025 Site ID Radio ID Each site was assigned a four digit Site ID: SW System NW System 1010...
  • Page 108 Programming Here is a typical example of a Home system user (radio). His ANI is fully defined (no wild markers). As you can see from his ANI, he is on Site 1040 and has a Radio ID of 025. Phone-to-mobile and Mobile-to-Mobile are enabled privileges.
  • Page 109 To gain access the mobile keys up with 100.0 Hz encode and send an ANI of “1040025”. The Model 748 sees this as User 714 and allows the call. The Model 748 then keys the transmitter with 100.0 Hz encode, seizes the line and allows the dial tone from the central office to pass out on to the channel.
  • Page 110 Programming Notes: 025-9368H...

  • Page 111: Feature Set Reference

    V FEATURE SET REFERENCE This section describes each programmable function or command in the Model 748. The purpose of the function or command, how it is used, and how to program it are included. The functions or commands are listed in alphabetical order for easy reference. References are also made back to Sections 3 and 4 for detailed discussions or examples of various features and how the functions or commands affect operation.

  • Page 112: Interconnect Functions

    10 digits, using any of the 16 DTMF tone pairs (0 to 9, A to D, *, #). Wild ANI is supported in the Roamer version of the Model 748. It is indicated in the database by the presence of the DTMF fourth column “A”...

  • Page 113: Add/Delete/View Prefix

    1-plus” areas, the call is placed just by dialing 820-6363. The only way to toll restrict this type of call is to know all the telephone number prefixes which are toll calls. The Model 748 uses a 1000- prefix (all possible prefixes) toll table to determine which prefixes are Local Zone or non 1-plus toll calls.

  • Page 114: Airtime

    Pre-pay mode will accommodate that. When Pre-pay mode is active for a user, the Model 748 will first check to see if how much airtime is available before allowing the call to proceed. If the Airtime count is greater than 2 hours, the call will be proceed as normal.

  • Page 115: Ani Mobile-Repeat

    (Mobile-to-mobile, Mobile-to-phone, or ANI Mobile-repeat) then the Model 748 requires steering digit of “5”. If the user only has been given the ability to perform one function, the Model 748 will automatically take care of it without the steering digit.

  • Page 116: Answer Type

    Feature Set Reference Answer Type When the Model 748 starts an interconnect call to a user (radio) on the channel, it must have a way of knowing when the called party (user) has answered to connect the parties. Answer type sets this parameter for each user (radio).

  • Page 117: Autocall User

    DTMF interdigit time becomes the interdigit timeout period. The Model 748 can be programmed to automatically call a user even if the caller does not enter any DTMF digits. This is so inexperienced callers can call a user without having to know that they must enter a user number or ANI.

  • Page 118: Autodials - Autodials Mode

    Model 748's internal modem. Autodial Tables Once connected to the Model 748 and the Main Menu is on the screen, type “1” and press ENTER and the Interconnect Menu will be displayed. Type “4” and press...
  • Page 119 “14258206363”. Text is valid also but there is still a maximum of 16 characters per autodial location. Autodial mode Once connected to the Model 748 and the Main Menu is on the screen, type “1” and press ENTER and the Interconnect Menu will appear. Type “3” and press...

  • Page 120: Busy Tone Disconnect - Second Dialtone Disconnect

    Busy Tone Disconnect - Second Dialtone Disconnect The Model 748 monitors the phone line for progress tones whenever the phone line is off hook. The Model 748 is capable of detecting dialtone and busy tone and disconnecting the call. When Busy tone disconnect is enabled, five cycles of busy tone (.37 second on, .37 second off) and the Model...

  • Page 121: Call Detail Logging

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “1” and press ENTER and the Interconnect Menu will appear.

  • Page 122: Call Limit Time - Extended Call Limit

    Model 748's internal modem. Extended call limit Once connected to the Model 748 and the Main Menu is on the screen, type “1” and press ENTER and the Interconnect Menu will appear. Type “1” and press...

  • Page 123: Call Alert Beeps

    If an Mobile-to-Mobile call is in progress (or ANI mobile-repeat) and the telco line starts receiving ringing voltage, the Model 748 can issue an alert tone on the channel that follows the incoming ring. This allows the mobiles currently on the channel to terminate the call in progress and allow the Model 748 to answer the ringing telco line.

  • Page 124: Clear Airtime Records

    Feature Set Reference Clear Airtime Records The Model 748 keeps track of each user's airtime. This can be either Accumulated (count up) or Pre- pay (count down). The current airtime record for each user is displayed as the last item number in the User menu (both for Interconnect and Repeater Panel users).

  • Page 125: Clear Call Detail Records

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “4” and press ENTER the Accounting Menu will be displayed.

  • Page 126: Courtesy Tone

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “1” and press ENTER and the Interconnect Menu will appear.
  • Page 127 Feature Set Reference displayed using the currently selected user's data. Select the User number you wish to program (see “User Range” later in this section). Select the item number for CTCSS/DCS decode or CTCSS/DCS encode and press ENTER The current setting will appear along with a message instructing you to enter the new value. Enter the new CTCSS/DCS value and press when you have finished.

  • Page 128: Ctcss/Dcs Drop

    Feature Set Reference CTCSS/DCS Drop When a call has come into the Model 748, and the caller has selected a user to call, the Model 748 generates CTCSS or DCS (depending on the CTCSS/DCS encode) and sends out the selective calling, and then the ringing.

  • Page 129: Dcs Decode (Polarity) - Dcs Encode (Polarity)

    0's that make up the DCS pattern. For example 023 becomes 047 when inverted. To make sure the Model 748 receives and encodes the correct DCS code from your mobiles, the Model 748 has the ability to invert the signal it receives or transmits (change all the 1's to 0's, and change all of the 0's to 1's).

  • Page 130: Dialout Mode

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “1” and press ENTER The Interconnect Menu will be displayed.

  • Page 131: Disconnect Ani

    Disconnect ANI Once a call has been established and is in the conversation mode, the Model 748 must have a way of knowing when the mobile or radio wants to terminate the call. This is done by sending a DTMF string or code indicating “disconnect or terminate the call”.

  • Page 132: Dispatch Override

    Dispatch Override When a phone caller attempts to make a call and the channel is busy, the Model 748 will send busy tone to the caller or Voice prompt #7 until the channel clears or becomes quiet (three seconds of no channel activity).

  • Page 133: Display Statistics

    When power is first applied to the Model 748, it will do a System and User database test on the integrity of the data. If the System database fails, it will reset the System database. When the Model 748 checks the User database (Interconnect and Repeater Panel), it is checking the integrity of each individual User.

  • Page 134: Dtmf On Time - Dtmf Off Time

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “1” and press ENTER and the Interconnect Menu will appear.

  • Page 135: Dtmf-T Collect Time

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main menu is on the screen, type “1” and press ENTER the Interconnect Menu will be displayed.

  • Page 136: Dtmf-T Reset Time

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main menu is on the screen, type “1” and press ENTER the Interconnect Menu will be displayed.

  • Page 137: Dtmf-T Reset Digit

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main menu is on the screen, type “1” and press ENTER the Interconnect Menu will be displayed.

  • Page 138: Dtmf Interdigit Time

    3) During a hookflash initiated regenerate period. The reason for the DTMF interdigit time is to leave a path for the Model 748 to take in the event the user quits entering digits during telephone dialing or during ANI or user number overdial.

  • Page 139: Enabled

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “1” and press ENTER and the Interconnect Menu will appear.

  • Page 140: Equipment Type

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “1” and press ENTER and the Interconnect Menu will appear.
  • Page 141 Feature Set Reference The default setting for Equipment type is “Mobile” for all users. Equipment type is supported by block or range programming. See “User Range” later in this section for details. Application note: For the Equipment type “Talkback” or “Tone/Voice”, it is presumed that a selective calling format will be used to alert or unsquelch a receiver.

  • Page 142: Emergency Prefix

    (setting it to no prefix). When a mobile dials the Emergency prefix, the Model 748 does a couple of things different for that call. First, it drops out of regeneration and into the conversation mode after the three-digit prefix has been dialed.

  • Page 143: Fast Ani Access

    Feature Set Reference Fast ANI Access To help thwart hackers from gaining access to a system, the Model 748 can require that all multi- digit ANIs meet a minimum average digit speed of 5 digits per second. This requires that the mobiles be equipped with ANI microphones like the ZMX or have the ability to transmit an ANI at greater than 5 digits per second average speed.

  • Page 144: Hookflash Mode

    Feature Set Reference Hookflash Mode The Model 748 can support the mobile in performing a hookflash on the current line once in the conversation mode. One of the more typical installations where hookflash is used is on PBX installations. This is enabled on a per user basis. On PSTN calls a user's Toll restrict type must be set to “None”...

  • Page 145: Id Call Sign - Id Interval - Id Speed

    ID will be sent at the end of the next call. To send the ID at the end of every call, set the ID interval to 0. The ID speed, the rate in words per minute that Morse code is transmitted by the Model 748, is programmable from 10 to 25 wpm, the default is 20 wpm.

  • Page 146: Interconnect Hog Mode - Interconnect Hog Time

    748, thereby putting that user in the “Last User” slot. The Interconnect hog time is the amount of time that a user is prevented access to the Model 748. It can be programmed in 1 second increments ranging from 10 to 250 seconds.

  • Page 147: Interconnect Privacy

    Feature Set Reference Interconnect Privacy When the Model 748 is connected to a repeater, it can provide the users with added privacy. Since the repeater is capable of full duplex conversation, you have the following options; repeating the mobile's audio, running full duplex (repeating both the mobile's audio and the telephone audio at the same time), or sending out a blocking tone in place of the mobile's audio.

  • Page 148: Interconnect - Allowed Days / Restricted Days

    Saturday and Sunday being restricted and Monday through Friday being allowed. This means that the Model 748 will only pay attention to the start and stop times on Monday through Friday, and will restrict interconnect access 24 hours a day on Saturday and Sunday.
  • Page 149 Feature Set Reference ENTER is pressed, the next day and its current status will appear. This will continue through all seven days of the week. When completed both Interconnected allowed days and Interconnected restricted days will be updated on screen. Day of the week abbreviations used: Sunday Monday...

  • Page 150: Keyup Delay

    The Selcall and Roamer versions of the Model 748 provide the capability to selectively call a field unit using an analog tone signaling format. Keyup delay is the amount of time the Model 748 waits between keying the transmitter and sending the selective calling tones.

  • Page 151: List Call Detail Records (Smdr)

    List Call Detail Records (SMDR) The Model 748 can list the Call detail records that is currently stored internally. This can be useful to evaluate recent activity on the system without having to download the records. The records are listed in a “first in first out”...

  • Page 152: List Users

    List user command. Note that when you first enter the User Menu on a Model 748, User range is set to start at 1 and end at 1 (“User range: 1”). Using the List users command will only display one user until the User range is changed.

  • Page 153: Log Errors In Call Detail Records

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “4” and press ENTER the Accounting Menu will be displayed.

  • Page 154: Loop Disconnect Time

    Loop Disconnect Time When the Model 748 has seized or gone off-hook on a phone line, it has completed a series circuit with the local central office or PBX. Loop current is present and can be detected by the Model 748.

  • Page 155: Maximum Regenerated Digits - Minimum Regenerated Digits

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “1” and press ENTER the Interconnect menu will be displayed.

  • Page 156: Minimum Call Duration

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “3” and press ENTER the Accounting Menu will be displayed.

  • Page 157: Mobile Activity Time

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “1” and press ENTER the Interconnect Menu will be displayed.

  • Page 158: Mobile Answer Time

    If the caller stays on the line, ringing will commence as soon as the channel is free. The Model 748 will allow the caller to stay on the line for the Mobile answer time before hanging up.

  • Page 159: Mobile Ringout

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “1” and press ENTER and the Interconnect Menu will appear.

  • Page 160: Mobile-To-Mobile

    This is one of the mobile originate privileges supported in the Model 748. When a user (radio) signs on, he will hear the Overdial prompt tone or Voice prompt #5 from the Model 748. At this point the call proceeds just like a phone-to-mobile call, the mobile must overdial a User number or ANI indicating who the called party is.

  • Page 161: Mobile-To-Phone

    If the originating mobile has more than one privilege enabled, a steering digit will be required. After sending his Access ANI the Model 748 will key up and send the Steering digit prompt tone. The mobile then sends a “*” or “9” as the steering digit for mobile to phone calls.

  • Page 162: Overdial

    ID of a user (radio) is called “Overdial”. There are two ways to tell the Model 748 which user (radio) you want to call; The default is “User #”. This is the place holder or slot in the user database that a user occupies. The second method is “ANI”...

  • Page 163: Overdial Prompt

    To single out a user or radio in a multi-user interconnect requires overdial of a number to select a user to call. The Model 748 provides a prompt tone to the caller (phone or radio) indicating “please overdial now”. This prompt tone can be either an 925 Hz tone (default) or dialtone. To keep operation consistent, the overdial prompt tone is the same for both phone originated (phone-to- mobile) callers and mobile originated (mobile-to-mobile) callers.

  • Page 164: Page Forward User

    748 can try calling a second mobile before terminating the call. If the call to the Page forward user is not answered either, the Model 748 will terminate the call. The Call detail record for a call that has been forwarded, will show twice. The first Call detail record would show that the original user did not answer the call but was Page forwarded.

  • Page 165: Pager Talk Time

    When making a call to a “Tone/Voice” pager, the Model 748 will send the paging tones over the channel to unsquelch the pager. The Model 748 will send a single beep or Voice prompt #6 to the telephone caller indicating that he may begin speaking. Telephone audio is then passed to the transmitter.

  • Page 166: Pbx Outside Line Digit

    The PBX outside line digit allows you to tell the Model 748 what digits may be used to gain access to the outside line. You are allowed to enter up to four digits, and by entering digits you also tell the Model 748 that it is connected to a PBX.

  • Page 167: Pbx Extension Length

    PBX’s typically have 2, 3 or 4 digit extension numbers when calling extension to extension. When a mobile to phone call is placed to a PBX extension number, the Model 748 will regenerate the number of digits specified by PBX extension length. The 748 will then drop out of regeneration and drop into conversation mode enabling mobile to phone audio.

  • Page 168: Phone-To-Mobile

    Feature Set Reference Phone-to-Mobile When the Model 748 answers a phone line, the caller is prompted to overdial a number to select the mobile he wishes to call. For a mobile to receive phone originated calls, Phone-to-mobile must be “Enabled”.

  • Page 169: Program Access Code

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “3” and press ENTER the System Menu will be displayed.

  • Page 170: Pstn Feature Code

    “,” are valid in the string. The string can be up to a maximum of nine digits long. When a mobile first accesses the phone line, the 748 waits for the first digit of a phone number from the mobile. This allows the mobile to listen for dial tone prior to dialing. Once the first digit has been received from the mobile, the 748 will dial the PSTN Feature code while buffering the digits received from the mobile.

  • Page 171: Reset System Database / User Database To Factory Default

    Model 748's internal modem. Reset System database: Once connected to the Model 748 and the Main Menu is on the screen, type “5” and press ENTER the Diagnostic Menu will be displayed. Select the item number for Reset System database to factory...

  • Page 172: Rings Before Answer

    (radio). The Model 748 counts rings on the leading edge of a ringing impulse. The default number of Rings before answer is 2. This will cause it to answer on the leading edge of the second ringing impulse after a valid pause between ring impulses.

  • Page 173: Ringouts Sent To Mobile

    For example, with separate controls, you can make the Model 748 ring on the channel one time and wait 60 seconds for a mobile to answer. You do this by setting the number of Ringouts sent to mobile to “1”, and the Mobile answer time to 60 seconds. Note that the transmitter will remain keyed during the answer time to keep the channel busy until the mobile answers the call.

  • Page 174: Rs-232 Port Speed

    Feature Set Reference RS-232 Port Speed When you want to program the Model 748 using the local serial port, you will need a terminal or a computer running communication software that supports the ANSI protocol for screen control. Most commercial communications software will support ANSI terminal emulation. For the Model 748 and the computer or terminal to communicate you will need to specify how to send and receive characters.

  • Page 175: Scheduled Telco Access

    Note that, if you accidentally pass the mode or state you want, just keep pressing the space bar and the Model 748 will wrap around (when the last choice is displayed, it will return to the first one).

  • Page 176: Selcall Capcode

    (some users could have Two-tone while others have DTMF). The Selcall capcode indicates to the Model 748 what sequence of tones is sent to call a particular user. The type of signaling is set with the Selcall format command (DTMF, DTMF-t, Two-tone, Five-tone).
  • Page 177 Two-tone Tone Groups table. See “Two-Tone Signaling” in Section 7 for the two-tone tables. Below are three examples of how to determine the Selcall capcode entry for the Model 748. Example 1 assumes you know the timing and two tones required to set off the pager. Example 2 assumes you know the code plan and capcode.
  • Page 178 1 and tone 2 use row 3 in the Two-tone Tone Groups table which is 304.7 Hz. This creates a problem because the Model 748 would send out two of the same tones without a gap and would appear to be a single long tone.
  • Page 179 2 digits are the same. Example 3: We are converting an existing Model 45 or Model 48 database over to the Model 748. Our first 2- tone pager code is “11132” (T G1 G2 T1 T2) where: = timing 1 (1.0 0 3.0 8.0)
  • Page 180 For example, on a call code of 33333, the following tones will be sent by the Model 748: 1023 Hz, 459 Hz, 1023 Hz, 459 Hz, 1023 Hz, but you only enter 33333 and the Model 748 will substitute the repeat tone.
  • Page 181 Feature Set Reference The current Selcall capcode will appear along with a message instructing you to enter the new value. Enter the Selcall capcode and press when you have finished. ENTER Valid digits for DTMF formats are any of the 16 DTMF tone pairs (0 to 9, A to D, *, #). Valid digits for Two-tone are numeric digits only (0..9).

  • Page 182: Selcall Format

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “1” and press ENTER and the Interconnect Menu will appear.

  • Page 183: Set Date - Set Time

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “3” and press ENTER the System Menu will be displayed.

  • Page 184: Site Name

    To help identify billing files and sites, the ability to name a site has been included. The Site name is a 36 character string that can be used to describe the site where the Model 748 is installed. It will always appear under the Main Menu header as a reminder which Model 748 you are programming.

  • Page 185: Steering Digit Prompt

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “1” and press ENTER the Interconnect Menu will be displayed.

  • Page 186: Supervisor User

    The Model 748 will turn off the privacy tone and force the call to full-duplex. This allows the supervisor to monitor both sides of the conversation. This is only in affect for the duration of the call in process.

  • Page 187: System Memory Test

    This command will execute a non-destructive memory test on all RAM (random access memory) installed in the Model 748. The Model 748 is capable of holding up to 128 k-bytes (16 banks) of non volatile memory with the Call Detail option installed. Standard memory size is 32k bytes (four banks) of non volatile memory.

  • Page 188: Toll Restrict Menu

    Note that if you accidentally pass the mode or state you want, keep pressing the space bar and the Model 748 will wrap around (when the last choice is displayed, it will return to the first one). The default setting for Toll restrict plan is “NA Standard”.

  • Page 189: Toll Restrictions

    Feature Set Reference Toll Restrictions This command sets the level of Toll restrictions at the user (radio) level. There are five basic levels or degrees of Toll restrictions (see Table 10). These are also context sensitive based on the setting of Toll restrict plan.
  • Page 190 Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “1” and press ENTER and the Interconnect Menu will appear.

  • Page 191: Unerase Call Detail Records (Smdr)

    When you have a range of users specified and select a command that supports block programming, the Model 748 will prompt you as to whether you want to program all of them (in the user range) in one keystroke, or if you would like to review and alter each of them individually. If you elect to let...
  • Page 192 If you would like to program a certain parameter for a range of users, but you want them to be different, the Model 748 will show you each user one-at-a- time and allow you to change each independently from the other users.

  • Page 193: Video Mode

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “3” and press ENTER the System Menu will be displayed.

  • Page 194: Voice Prompts

    Model 748 is recording the message. You can terminate the message (and should) when you are finished by pressing a DTMF “*”. Two beeps mean the Model 748 is no longer recording and the message is over. Use the Play voice prompt command to verify your message.
  • Page 195 This is when the CALL mobile does not answer or the channel remained busy and the Model 748 could not try calling the mobile. There is no tone substitute for this voice prompt. INVALID USER...

  • Page 196: Wild Ani

    ANI becomes a wild card marker. Any digit will match the wild character when Wild ANI is “Enabled”. See “How to Program ANIs in the Model 748” and “System Examples” in Section 4 for a discussion and examples of Wild ANI systems.

  • Page 197: Repeater Panel Functions

    Pre-pay mode will accommodate that. When Pre-pay mode is active for a user, the Model 748 will first check to see if how much airtime is available before allowing the call to proceed. If the Airtime count is greater than 2 hours, the call will be proceed as normal.

  • Page 198: Carrier Squelch Repeat

    When Carrier squelch repeat is “Enabled”, the Model 748 will act as a carrier squelch repeater panel. Upon seeing carrier, the Model 748 will key the transmitter and allow repeat audio. If a sub- audible tone/code is detected, it will revert to the programming for the detected sub-audible tone/code.

  • Page 199: Courtesy Bip - Tail Bips

    Model 748's internal modem. Courtesy bip Once connected to the Model 748 and the Main Menu is on the screen, type “2” and press ENTER and the Repeater Panel Menu will appear. Type “2” and press...

  • Page 200: Dtmf Repeat

    DTMF Repeat When the repeater panel is active in a Model 748, it passes all audio through its repeat path while it is decoding an enabled tone/code. It is also monitoring DTMF as it receives it, looking for a valid Access ANI or program access code.

  • Page 201: Decode

    Decode The Model 748 has the ability to decode CTCSS and DCS. The first 50 users are CTCSS (67.0 Hz - 254.3 Hz). Users 51 - 154 are DCS codes. All 154 tones and codes are always in the “Decode table”...

  • Page 202: Enabled

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “2” and press ENTER and the Repeater Panel Menu will appear.

  • Page 203: Encode During Tx Hold

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “2” and press ENTER and the Repeater Panel Menu will appear.

  • Page 204: Hog Mode

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “2” and press ENTER and the Repeater Panel Menu will appear.

  • Page 205: Hog Limit

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “2” and press ENTER and the Repeater Panel Menu will appear.

  • Page 206: Id Rate

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “2” and press ENTER and the Repeater Panel Menu will appear.

  • Page 207: Initial Tx Hold Time - Tx Hold Time

    Model 748's internal modem. Initial TX hold time Once connected to the Model 748 and the Main Menu is on the screen, type “2” and press ENTER and the Repeater Panel Menu will appear. Type “1” and press...

  • Page 208: List Users

    List user command. Note that when you first enter the User Menu on a Model 748, User range is set to start at 1 and end at 1 (“User range: 1”). Using the List users command will only display one user until the User range is changed.

  • Page 209: Morse Id

    Morse ID Each tone or code in the Model 748's Repeater Panel can be assigned an individual Morse ID. This can be up to 8 characters in length. The interval at which the ID is sent is controlled by the ID rate in the Repeater Panel System Menu.

  • Page 210: Privacy

    The Privacy function prevents another tone or code from “barging in” on the transmitter hold time. The Model 748 will not recognize a new tone or code until the transmitter drops. This allows a user group to keep control of the repeater until their conversation is complete. This becomes important in a system with heavy dispatch traffic.

  • Page 211: Reserved

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “2” and press ENTER and the Repeater Panel Menu will appear.

  • Page 212: Stuck Mic Id

    Access the Model 748 through your direct connected PC or terminal, or remotely from your PC connected to a modem via the Model 748's internal modem. Once connected to the Model 748 and the Main Menu is on the screen, type “2” and press ENTER and the Repeater Panel Menu will appear.

  • Page 213: Tx Timeout

    Feature Set Reference TX Timeout The TX timeout timer is the maximum continuous time the Model 748 will allow a valid tone or code to key the transmitter. This is to prevent a stuck microphone from burning up or overheating the transmitter.

  • Page 214: User Range

    When you have a range of users specified and select a command that supports block programming, the Model 748 will prompt you as to whether you want to program all of them (in the user range) in one keystroke, or if you would like to review and alter each of them individually. If you elect to let the Model 748 program them all without reviewing them, it will change all of the users in the user range and give you a prompt when it is finished.
  • Page 215 Feature Set Reference to enter an ending user number. Type the last user number you wish to program for a block or range OR just press for a single user (starting user). ENTER The default User range is for a single user, user number 1. Application note: A helpful tool when examining or programming user can be to step through users one at a time.
  • Page 216 Feature Set Reference Notes: 025-9368H...

  • Page 217: Vi Repair

    Zetron order number when you call. If a unit develops a fault in service and the unit needs to be returned, after consultation with a Zetron engineer, you must obtain an Authorzed Returns Number (ARN) before returning the unit. Please quote the ARN in any further correspondence.
  • Page 218 Repair 4. The Carrier LED MUST follow carrier activity on the channel. It must be lit when carrier is present and extinguished when carrier is absent. If it is always off, the Model 748 will not function correctly. 5. The Carrier and DTMF LEDs are hardware controlled. The drive circuits for these LEDs are also signal inputs to the microprocessor.

  • Page 219: Model 7Xx Audio Block Diagram (006-0077A)

    Repair MODEL 7XX AUDIO BLOCK DIAGRAM (006-0077A) 025-9368H...

  • Page 220: Model 7Xx Control Board (702-9793D)

    Repair MODEL 7XX CONTROL BOARD (702-9793D) Parts List LEGEND: # = NOT INSTALLED ^ = INSTALLED ON HIGHER ASSY + = OPTION (INSTALLED PER CUSTOMER ORDER) ITEM COMPONENT REFERENCE PART NO. DESCRIPTION PART REFERENCE ---------------------------------------------------------------------------------------------------------------------------- 101-0033 RESISTOR,22 OHM,1/4W,5%,CARBON FILM R45,R46,R49#,R88 101-0047 RESISTOR,47 OHM,1/4W,5%,CARBON FILM R83,R131#,R155,R169 101-0049 RESISTOR,100 OHM,1/4W,5%,CARBON FILM...
  • Page 221 Repair MODEL 7XX CONTROL BOARD (702-9793D) Parts List (Continued) ITEM COMPONENT REFERENCE PART NO. DESCRIPTION PART REFERENCE ---------------------------------------------------------------------------------------------------------------------------- R38# 101-0118 RESISTOR,75K OHM,1/4W,5%,CARBON FILM R133# 101-0119 RESISTOR,82K OHM,1/4W,5%,CARBON FILM R41,R42,R64,R75#,R76,R99, 101-0121 RESISTOR,100K OHM,1/4W,5%,CARBON FILM 100K R102,R149,R176,R193 101-0123 RESISTOR,120K OHM,1/4W,5%,CARBON FILM 120K R27,R55,R91 101-0131 RESISTOR,270K OHM,1/4W,5%,CARBON FILM 270K...
  • Page 222 Repair MODEL 7XX CONTROL BOARD (702-9793D) Parts List (Continued) ITEM COMPONENT REFERENCE PART NO. DESCRIPTION PART REFERENCE ---------------------------------------------------------------------------------------------------------------------------- C20,C22,C36,C81,C82, 152-0089 CAP,.001uF,50V,5%,POLYESTER .001 C120#,C129,C133,C136 C45# 152-0224 CAP, 0.22uF,630VDC,10%,POLYESTER,945V SURGE 0.22K 630V C80,C100,C105 152-0250 CAP,.047uF,50V,5%,POLYESTER .047 C29,C106,C142 154-0022 CAP,22uF,16V,10%,TANTALUM 22 TANT C56,C69,C78 154-0025 CAP,1uF,35V,10%,TANTALUM 1 TANT C63#...
  • Page 223 Repair MODEL 7XX CONTROL BOARD (702-9793D) Parts List (Continued) ITEM COMPONENT REFERENCE PART NO. DESCRIPTION PART REFERENCE ---------------------------------------------------------------------------------------------------------------------------- U12# 340-2003 RELAY DRIVER 50V/.5A 2003 340-3821 XSTR,JFET,N-CHANNEL,FOR 2V BIAS AGC,T0-92 MPF3821 QX1,Q1,QX2,Q7,Q9#,Q10#, 340-3904 XSTR,NPN,40V/200MA,TO92 2N3904 Q11,Q12,Q13,Q14,Q15,Q16 NOTE 21 340-3906 XSTR,PNP,40V/200MA,TO92 2N3906 340-5460 XSTR,JFET,P-CHAN,40V,5MA,TO92 PKG 2N5460 Q2,Q5,Q6,Q17,Q18...
  • Page 224 Repair MODEL 7XX CONTROL BOARD (702-9793D) Parts List (Continued) ITEM COMPONENT REFERENCE PART NO. DESCRIPTION PART REFERENCE ---------------------------------------------------------------------------------------------------------------------------- XRV1 381-0010 HEATSINK, TO-220, BLK XJP1,2,22-27,29 402-3040 MINI JUMPER (POS A) XJP21 (POS B) XJP31 (POS A & A) XJP32 (POS A & D) NOTE 14 403-4010 10 OF 401-0262 XU3,4,5,19,20,33,39-42...
  • Page 225 Repair MODEL 7XX CONTROL BOARD (008-9793D) Schematic Sheet 1 of 5 025-9368H...
  • Page 226 Repair MODEL 7XX CONTROL BOARD SCHEMATIC (008-9793D) Sheet 2 of 5 025-9368H...
  • Page 227 Repair MODEL 7XX CONTROL BOARD SCHEMATIC (008-9793D) Sheet 3 of 5 025-9368H...
  • Page 228 Repair MODEL 7XX CONTROL BOARD SCHEMATIC (008-9793D) Sheet 4 of 5 025-9368H...
  • Page 229 Repair MODEL 7XX CONTROL BOARD SCHEMATIC (008-9793D) Sheet 5 of 5 025-9368H...
  • Page 230 Repair MODEL 7XX CONTROL BOARD (702-9793D) Silkscreen 025-9368H...

  • Page 231: Model 7Xx Single E-E Card (702-9794A)

    Repair MODEL 7XX SINGLE E-E CARD (702-9794A) Parts List LEGEND: + = OPTION # = NOT INSTALLED ^ = INSTALLED ON HIGHER ASSY Item Quantity Reference Part Description Part Reference _____________________________________________________________________________________________________________________ 101-0033 22 OHM 1/4W 5% CARBON FILM R10,R13 101-0061 330 OHM 1/4W 5% CARBON FILM 101-0065 470 OHM 1/4W 5% CARBON FILM 101-0073 1.OK 1/4W 5% CARBON FILM...
  • Page 232 Repair MODEL 7XX SINGLE E-E CARD (702-9794A) Parts List (Continued) Item Quantity Reference Part Description Mfg.PartNo. _____________________________________________________________________________________________________________________ C23,C24 155-0083 470 UF 10 VOLT RADIAL ALUMINUM ELECTROLYTIC T2,T1 305-0022 600:600 XFMR *SAFETY/NETWORK CRITICAL* U1,U2,U3 NOTE 2 311-0006 BS OPTO ISOLATOR *SAFETY/NETWORK CRITICAL* PC110 316-3074 QUAD HF OP-AMP EXT.
  • Page 233 Repair MODEL 7XX SINGLE E-E CARD (008-9794A) Schematic 025-9368H...
  • Page 234 Repair MODEL 7XX SINGLE E-E CARD (702-9794A) Silkscreen 025-9368H...

  • Page 235: Parts List

    Repair MODEL 4XB VOICE CARD (702-9236F) Parts List LEGEND: ^ = INSTALLED ON HIGHER ASSEMBLY # = NOT INSTALLED + = OPTION, INSTALL PER CUSTOMER ORDER Item Quantity Reference Part Description Mfg.Part No. _____________________________________________________________________________________________________________________ RX1 NOTE 5 101-0069 680 OHM 1/4W 5% CARBON FILM 101-0073 1K 1/4W 5% CARBON FILM 101-0090 5.1K 1/4W 5% CARBON FILM...
  • Page 236 Repair MODEL 4XB VOICE CARD (008-9236F) Schematic 025-9368H...
  • Page 237 Repair MODEL 4XB VOICE CARD (702-9236F) Silkscreen 025-9368H...

  • Page 238: Model 4Xb Dial Click Board (702-9242E)

    Repair MODEL 4XB DIAL CLICK BOARD (702-9242E) Parts List LEGEND: # = NOT INSTALLED ^ = INSTALLED ON HIGHER ASSY + = OPTION (INSTALLED PER CUSTOMER ORDER) ITEM COMPONENT REFERENCE PART NO. DESCRIPTION MANUFACTURE P/N --------------------------------------------------------------------------------------------------------------------- 101-0065 470 OHM 1/4W 5% CARBON FILM R12,R25# 101-0071 820 OHM 1/4W 5% CARBON FILM R1,R13,R19#,R26#...
  • Page 239 Repair MODEL 4XB DIAL CLICK BOARD (008-9242E) Schematic 025-9368H...
  • Page 240 Repair MODEL 4XB DIAL CLICK BOARD (702-9242E) Silkscreen 025-9368H...

  • Page 241: Vii Quick Reference

    VII QUICK REFERENCE CTCSS TONES The Model 748 is capable of encoding or decoding any of the 50 CTCSS tones in this table. When programming, tones are entered directly in Hz. You can include the decimal point if you wish, although it is not required.

  • Page 242: Digital Squelch Codes

    DIGITAL SQUELCH CODES The following table is a list of the Digital Coded Squelch (DCS) codes the Model 748 can encode or decode. The inverted code for each is also listed. When entering in a DCS code, precede the code with a “D”.

  • Page 243: Dtmf-T Signaling

    DTMF-t is an form of DTMF signaling that is compatible with most older forms of scan based DTMF trunking. Both the Collect and Reset digits and timing are programmable in the Model 748. The Reset digit and the timings for both are system wide settings. The Collect digit is part of the Selcall capcode (the first digit of the capcode) when using this format.

  • Page 244: Two-Tone Signaling

    Quick Reference TWO-TONE SIGNALING The format for entering a Two-Tone Selcall capcode is: TCCABCX: T = Timing (1 to 8, see the Two-Tone Timing table) CC = Codeplan (1 to 24, see the Two-Tone Codeplan table) A = Pager Cap-Code (0 to 9, see the Two-Tone Codeplan table) B = Tone 1 (actual number of first tone sent) C = Tone 2 (actual number of second tone sent) X = 0 = Group, 1 = Diagonal on Tone 1, 2 = Diagonal on Tone 2...

  • Page 245: Two-Tone Tone Groups

    Quick Reference Two-Tone Tone Groups Table 14 should be used to select the two-tone tone groups for Model 748 100-call programming. Use the Zetron group number, from 1 to 12 as shown. Table 14. Two-Tone Tone Group Frequencies Zetron Group Number Mfr.

  • Page 246: Two-Tone Codeplans

    Quick Reference Two-Tone Codeplans Table 15 and Table 16 should be used when programming two-tone codeplans into the Model 748. Note: “Z 5” indicates Zetron codeplan number 5 (codeplan G), use this number when programming the codeplan into the Model 748.

  • Page 247: Five-Tone Signaling

    X = Second address (1=No address, 2=2nd address) The Model 748 supports 4 five-tone formats, EIA, CCIR, PZVEI and EEA. The tones and timing are different for each; refer to the “Five-Tone Group/Timings” table for a list of the individual tones and timings.

  • Page 248: Voice Prompts

    This is when the mobile does not answer or the channel remained busy and the Model 748 could not try calling the mobile. There is no tone substitute for this voice prompt.

  • Page 249: Dtmf Commands

    Model 748 will keyup and send five short beeps. Note: if programming from the phone, the Model 748 doesn't keyup. The “#” is used as a termination digit. It lets the Model 748 know that all the digits (command or data) have been entered, please process them.
  • Page 250 Quick Reference Command Function Range Default EXIT PROGRAM MODE no range Setup and adjustment: 110# RESET SYSTEM PROGRAMMING 12345# to confirm 111# SET TX AUDIO LEVEL # TO STOP 112# SET CTCSS/DCS LEVEL # TO STOP 113# SET REPEAT LEVEL # TO STOP 114# ADJUST HYBRID NULL...

  • Page 251: Expert Commands

    Quick Reference EXPERT COMMANDS CAUTION: Before using these commands, you should verify their effect by calling Zetron Applications first. These commands are here for reference only. There is no other description of them in this manual. Command Function Range Default...

  • Page 252: Model 748 User Programming Log Sheet

    Quick Reference Model 748 User Programming Log Sheet Model 748 Site: ______________________________ Frequency: _______ MHz Company: _____________________________________________________ Address: _____________________________________________________ _____________________________________________________ Contact: __________________________________________ Telephone: ________________________ FAX: _____________________ User number: Call limit time: 3 minutes Extended limit Call detail logging: Toll None...

  • Page 253: Model 748 Programming Menu Tree

    Quick Reference MODEL 748 PROGRAMMING MENU TREE 025-9368H...
  • Page 254 Quick Reference Notes: 025-9368H...

  • Page 255: Viii Specifications

    VIII SPECIFICATIONS PHYSICAL SPECIFICATIONS Power 10.5 to 16 volts-DC at 700 mA, or 9 to 12 volts-AC at 11 watts Temperature 0 to 65 degrees Celsius Size 17.25" W x 7.50" D x 1.75" H., Desk, Wall, or rack-mount Weight 5.0 pounds DISPATCH CAPACITY CTCSS tones...

  • Page 256: Decoder Specifications

    Specifications DECODER SPECIFICATIONS Frequency range 67.0 Hz to 254.5 Hz Number of tones Number of digital codes Sensitivity less than -3dB SINAD Acquisition time typically less than 200 msec SIGNALING SPECIFICATIONS Frequency range 10 to 3500 Hz Frequency accuracy 0.1% Frequency stability 0.005% Distortion...

  • Page 257: Radio Interface Specifications

    Specifications RADIO INTERFACE SPECIFICATIONS FET pull to ground. Dual time constant noise detector or voltage change. CTCSS/DCS output -40 to +6 dBm. Hi/Lo selector. 600 ohm output. Tx audio -40 to +6 dBm. Hi/Lo selector. 1K ohm output. Rx audio -40 to +10 dBm.
  • Page 258 Specifications 025-9368H...
  • Page 259 Specifications 025-9368H...

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