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CES SDI-50 User & Service Manual

Telephone interconnect
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MODEL SDI-50
TELEPHONE INTERCONNECT
USER/SERVICE MANUAL
Communications Electronics Specialties, Inc.
931-218 S. Semoran BIvd.
Winter Park, FL 32792 USA
(407) 679-9440
(800) 327-9956
REV. 1/92
01000719
$20.00 (U.S.)

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  • Page 1 MODEL SDI-50 TELEPHONE INTERCONNECT USER/SERVICE MANUAL Communications Electronics Specialties, Inc. 931-218 S. Semoran BIvd. Winter Park, FL 32792 USA (407) 679-9440 (800) 327-9956 REV. 1/92 01000719 $20.00 (U.S.)

  • Page 2: Table Of Contents

    C.E.S. Model SDI-50 Manual Table of Contents 1.0 TECHNICAL SPECIFICATIONS ........1 2.0 MODEL SDI-50 GENERAL DESCRIPTION ......3 2.1 FEATURES: ..........3 3.0 SYSTEM OPERATION ........... 5 3.1 INITIATING A MOBILE TO LAND LINE CALL ....5 3.2 LAND LINE TO MOBILE CALL WITH AUTO-ANSWER ....5 3.3 LAND LINE TO MOBILE CALL WITHOUT AUTO-ANSWER .....
  • Page 3 6.6.7 Dial-up Remote Code (*8) ......36 6.7 MESSAGES ..........36 6.7.1 MESSAGE PROGRAMMING TABLE ......38 7.0 OPERATING THE SDI-50 AS A REPEATER CONTROLLER ..... 39 7.1 INSTALLATION AND SET UP ......... 39 8.0 SDI-50 PROGRAMMING LOG ........40 9.0 MODEL SDI-50 CIRCUIT DESCRIPTION ......
  • Page 4 C.E.S. Model SDI-50 Manual 9.1.9 Noise Circuit ........43 9.1.10 CTCSS Level Comparator ....... 44 Page # iii...

  • Page 5: Technical Specifications

    C.E.S. Model SDI-50 Manual TECHNICAL SPECIFICATIONS Physical: Dimensions: 8.25" W 1.5" H 9.5" D Weight: 3 Ibs., 13 oz. Mounting: Table top or 19" rack mount Electrical: Voltage: 10 to 15 Vdc Current: 250 mA Memory: EEprom w/100 years memory retention DTMF Error: -.54% to +.74% max...
  • Page 6 C.E.S. Model SDI-50 Manual This page left blank Page # 2...

  • Page 7: Model Sdi-50 General Description

    * Múltiple relay contad closures for custom applications. * Repeater controller capability with programmable transmitter hang time and time out timer makes the SDI-50 an inexpensive back-up unit. * Regenerated DTMF land line to mobile selectivo signaling for confidence in any network.
  • Page 8 C.E.S. Model SDI-50 Manual The Model SDI-50 is enclosed in an attractive cabinet with Mobile Detect, Transmit, Connect and Power status LEDs mounted on the front panel. Front panel Power and Connect/Disconnect switches provide for local operator control. Page # 4...

  • Page 9: System Operation

    LAND LINE TO MOBILE CALL WITHOUT AUTQ-ANSWER Dial the phone number of the line connected to the CES Model SDI-50. The interconnect will detect the ring voltage on the phone line, key the transmitter, and send the message programmed into the Error Message area.
  • Page 10 C.E.S. Model SDI-50 Manual, General Description an incoming call. Dial the phone number of the line connected to the CES Model SDI-50. The interconnect will answer on the programmed ring and return a quick double "beep" tone to the phone line.

  • Page 11: Installation

    This section describes each connection required by the Model SDI-50 Interconnect. This section aiso describes optional jumpers on the circuit board that can be used to customize the Model SDI-50 to your particular transmitter-receiver combination. Installation of the Model SDI-50 shouid be done by a qualified two-way radio technician.

  • Page 12: Tb1-20 Logic Ptt

    C.E.S. Model SDI-50 Manual, General Description transmitter, then move JMP7 on the interconnect circuit board (near the PTT relay K2), to position A. 4.1.4 TB1-20 LOGIC PTT Logic PTT is similar to the relay PTT output except that it only provides a ground to key the transmitter.

  • Page 13: Tb1-24 Receiver Discriminator Audio

    THIS CONNECTION MUST BE MADE DIRECTLY TO THE DISCRIMINATOR OUTPUT IN THE ASSOCIATED RECEIVER. Because the SDI-50 has its own internal squeich circuits, and needs to detect carrier for proper operation, do not connect the RECEIVER DISCRIMINATOR AUDIO line after any de-emphasis circuits, or any squeich circuits.

  • Page 14: Tb1-6 And 19 Control Outputs

    C.E.S. Model SDI-50 Manual, General Description Radios with external discriminator outputs usually do not provide raw discriminator audio and signals taken from this location may not function on the SDI-50. Jumper JMP6 should in placed in position D/A unless CTCSS or DCS is being used.

  • Page 15: Telephone Line Connections

    C.E.S. Model SDI-50 Manual, General Description TELEPHONE LINE CONNECTIONS The Model SDI-50 interfaces directly with a "loop start" telephone line. Connection to the telephone line is accomplished by plugging the modular telephone cord supplied with the interconnect into your telephone company supplied RJ11-C jack.

  • Page 16: Ctcss Freouency Selection Table

    C.E.S. Model SDI-50 Manual, General Description 4.3.1 CTCSS FREQUENCY SELECTION TABLE SWITCH # SWITCH # FREQ CODE 5 4 3 2 1 FREQ CODE 5 4 3 2 1 67.0 0 0 0 0 0 118.8 2B 1 0 0 0 0 71.9...

  • Page 17: 4.4 Sdi-50 Jumper Summary Table

    Number Name JMP1 Phone in Use Detect Intact: the SDI-50 checks the phone line for a busy condition before allowing a mobile to connect, but, still allows the use of the Special Connect Code for selective override. (See Special Connect Code. )
  • Page 18 C.E.S. Model SDI-50 Manual, General Description JMP7 Relay PTT Level The center pin, B, is common and connects to one oí the other two pins; A or C. Pin A: Relay PTT provides +12Vdc to key the transmitter. Pin C: Relay PTT provides a ground to key the transmitter.

  • Page 19: Level Adjustments

    C.E.S. Model SDI-50 Manual, Level Adjustments LEVEL ADJUSTMENTS Now that all connections have been made to the Model SDI-50, the next step is to perform all level adjustments required for proper operation in your system. An FM service monitor, an oscilloscope, or AC RMS voltmeter, and the DTMF encoder provided with the SDI-50 are required for level adjustments.

  • Page 20: Transmit Voice Level R75

    TONE OUTPUT LEVEL (6,C) Set your service monitor to receive on your transmit frequency. Dial the phone number of the telephone line connected to the SDI-50. After the SDI-50 answers and returns Page # 16...

  • Page 21: Repeat Audio Level R61

    R99 clockwise until you hear the sample rate change. Before going on to program the CES SDI-50, you must have properly completed the previous installation section and have the interconnect connected to the radio and telephone line.

  • Page 22: Programming The Model Sdi-50

    Level Adjustments PROGRAMMING THE MODEL SDI-50 It is not necessary to program every parameter in the Model SDI-50 to get your interconnect properly set up and tested. In that interest two short programming procedures are listed for simplex and half/full duplex operation in the section which follows.

  • Page 23: Specific Programming Applications

    C.E.S. Model SDI-50 Manual, Level Adjustments send a single, quick, beep tone to indícate it is in the Program Mode. If the wrong code is entered, the SDI-50 will disconnect. The SDI-50 must be set for Auto Answer to have remote programming capability.

  • Page 24: Simplex Sampling Programming Procedure

    > JMP4 shouid be cut or removed. 6.2.2 HALF/FULL DUPLEX PROGRAMMING PROCEDURE To use the SDI-50 in either duplex mode, the following changes to the factory set-up need to be made. Any change made should be penciled into the Program Log in the back of this manual for future reference.

  • Page 25: Program Summary Table

    C.E.S. Model SDI-50 Manual, Level Adjustments PROGRAM SUMMARY TABLE PROGRAM FACTORY CODE DESCRIPTION SETTING TIMERS Sample Rate (Simplex) 1 sec.22 6.4.1 Sample Window (Simplex) 60 ms. 6.4.2 Repeater Timer Out Timer (Duplex) 7 min. 6.4.3 Repeater Hang Time (Duplex) 2 ms.

  • Page 26: Timers

    C.E.S. Model SDI-50 Manual, Level Adjustments PROGRAM FACTORY CODE DESCRIPTION SETTING Remote programming code 975310# 6.6.1 Control Codes Connect/Disconnect Codes *73/#73 6.6.2 Special Connect Code 6.6.3 Control Function #1 Code *14 *04 6.6.4 Control Function #2 Code *25 *15 6.6.4...

  • Page 27: Sample Rate (*1 0)

    C.E.S. Model SDI-50 Manual, Level Adjustments 6.4.1 Sample Rate______(*1 0) For simplex operation oniy. The sample rate is the rate at which the interconnect unkeys the transmitter and checks for mobile activity. This value should be set to your liking, keeping in mind that the mobile cannot "capture"...

  • Page 28: Cali Limit Timer (*1 4)

    C.E.S. Model SDI-50 Manual, Level Adjustments 6.4.5 Cali Limit Timer (*1 4) This timer controls the maximum duration of the interconnected call. Time out will be preceded with double warning beeps once every two seconds. The time out warning is sent 20 seconds before the actual time out.

  • Page 29: Software Switches

    C.E.S. Model SDI-50 Manual, Level Adjustments SOFTWARE SWITCHES The Programming Codes starting with "*5" are actually switches that are turned on if the function is desired or off if the function is not wanted. The format used is: |_____ "1" to turn the function on.

  • Page 30: Selective Signalling (*5 12)

    C.E.S. Model SDI-50 Manual, Level Adjustments NUMBERS TO BE RESTRICTED *5 ____________ON OFF_________ NUMBER 1 NUMBER 2 NUMBER 3 NUMBER 4 NUMBER 5 NUMBER 6 NUMBER 7 NUMBER 8 NUMBER 9 NUMBER O Example: To have the numeral "1" toll restricted enter the following...

  • Page 31: Reset Of The Cali Limit Timer (*5 13)

    C.E.S. Model SDI-50 Manual, Level Adjustments programmed number of rings that it's set for. When the caller hears two short beeps the number of the mobile desired shouid be entered followed with the "#". The "#" is used to terminate the mobile ANI number and isn't sent out as part of the signalling.

  • Page 32: Tone To Pulse Dialing (*5 17)

    C.E.S. Model SDI-50 Manual, Level Adjustments *5 (tone) 16 (tone) 1 (tone) ;restrict 1st digit *5 (tone) 16 (tone) O (tone) ;don't restrict 6.5.7 Tone To Pulse Dialing (*5 17) This Program Code enables or disables tone to pulse dialing.

  • Page 33: Sample Rafe Multiplier (*5 23, 24)

    Switches 23 and 24 have a dual function. See below for duplex use of these switches. When the SDI-50 is used in simplex mode, the VOX circuit monitors telephone audio and modifies the sample rate to reduce the interruptions in transmission and determine the optimum sample time.

  • Page 34: Courtesy Beep (*5 24)

    Level Adjustments 6.5.13 Courtesy Beep When the SDI-50 is set up for Repeater Operation it can be programmed to generate a "Courtesy Beep" one second after the end of each transmission. This tone is useful for prompting the other party to begin speaking.

  • Page 35: Ring Out (*5 32)

    The ring-out will occur each time the SDI-50 senses the ring voltage on the phone line, up to the point that the interconnect answers if the Auto-Answer feature is on. The Ring Count (switches *5 25 and *5 26) should aiso be set if Auto- Answer is used.

  • Page 36: Automatic Cw Id (*5 34)

    (*5 37) For duplex operation. This function provides PTT logic to the transmitter whenever the SDI-50 detecte mobile carrier so that receive audio is retransmitted. This function works independently of the Interconnect Enable Code, and can be used to provide mobile to mobile repeater service when the interconnect is disabled.

  • Page 37: Mute On Pulse Dialing (*5 40)

    When selective signalling is used, some systems may require a "*" tone to be sent before the mobile ID number. If this switch is turned on, the SDI-50 will automatically inserí a "*" before the overdialed mobile number. *5 (tone) 41 (tone) 1 (tone) ;include a leading "*"...

  • Page 38: Phone In Use (*5 44)

    C.E.S. Model SDI-50 Manual, Level Adjustments 6.5.26 Phone in Use (*5 44) Normally the interconnect won't allow a mobile to break into an existing phone conversation (with JMP1 in place). If the line is in use, the mobile operator will receive the Error Message when access is attempted.

  • Page 39: Special Connect Code (*7 1)

    C.E.S. Model SDI-50 Manual, Level Adjustments the "#" sign to disconnect (except when the single "*" or "#" is used - *5 21,22). Example: To use "*89" as the global connect code and "#89" as the global disconnect code, enter: *7 (tone) O (tone) 89 (tone) 6.6.3...

  • Page 40: Interconnect Enable (*7 4)

    *8 (tone) 9654# (tone) MESSAGES Five separate user programmable Morse Code Messages are available in the CES SDI-50 to help establish the status of the interconnect. These are: Connect Message (*9 0) - This message is sent each time a...
  • Page 41 Signalling: It alerts the mobile operator of an incomming land line call. The SDI-50 will send the Error Message each time it detects ring voltage on the phone line. If the message programmed into the Error Message area is longer than four or five seconds in duration (the interval between rings), then the message will be sent on every other ring detected.

  • Page 42: Message Programming Table

    (0-4). |________________________________ *9 is used to start each message programmed. A beep tone will be sent by the SDI-50 between each two digit character number as they are entered. Example: To program "OFF" in the disconnect Message enter the following: *9 (tone) 1 (tone) 63 (tone) 33 (tone) 33 (tone) 08 (tone).

  • Page 43: Operating The Sdi-50 As A Repeater Controller

    C.E.S. Model SDI-50 Manual, Repeater Controller OPERATING THE SDI-50 AS A REPEATER CONTROLLER The SDI-50 can be configured to function as a repeater controller when wired to a full duplex base station, separate transmitter and receiver, or an existing repeater.

  • Page 44: Sdi-50 Programming Log

    Model SDI-50 Manual, Repeater Controller SDI-50 PROGRAMMING LOG PROGRAM FACTORY CODE DESCRIPTION SETTING CHANGED TO TIMERS TIME Sample Rate (Simplex) 1 sec. ___________ Sample Window (Simplex) 60 ms. ___________ Repeater Time Out Timer (Dúplex) 7 min. ___________ Repeater Hang Time (Dúplex)
  • Page 45 Model SDI-50 Manual. Repeater Controller PROGRAM CODE DESCRIPTION FACTORY SETTING CHANGED TO Mute on Pulse Dial ___________ Begin Overdial w/"*" ___________ Begin Overdial w/"#" ___________ Phone in Use ___________ DTMF Regenerate ___________ Remote programming code 975310# Control Codes Connect/Disconnect Codes...

  • Page 46: Model Sdi-50 Circuit Description

    12.0 volt power suppiy. 9.1.5 Power on Reset The Model SDI-50 has a "Power on Reset" circuit to monitor the input voltage to the Model SDI-50, and provides a "Reset" pulse to the Microcomputer Control System in the Page # 42...

  • Page 47: Watch Dog Timer

    9.1.7 Telephone Line Circuit The telephone line is connected directly to the back of the Model SDI-50 via a cable equiped with RJ11-C connectors. A ring detecter (U10) provides a square wave output at the ring voltage frequency to Q8.
  • Page 48 C.E.S. Model SDI-50 Manual, Circuit Description noise oniy. The level of noise on the radio channel indicates the presence or absence of an RF carrier. The noise level is adjusted by R91 and sent to a network that gives a peak DC reading of the amount of noise on the channel.

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