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E.F. Johnson Company Summit DM 975x, Service Manual

The E.F. Johnson Company Summit DM 975x is a high-quality two-way radio designed for seamless communication. Get the most out of your device with the user-friendly Service Manual, available for free download from our website. Maximize your radio's potential with comprehensive guidance and troubleshooting tips, ensuring optimal performance every time.

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PARTS LIST

9-12

Revised December 2000

Part No. 001-9750-007

R 325 

11k ohm ±5% 1/8W smd

569-0105-113

R 326 

3.3k ohm ±5% 1/8W smd

569-0105-332

R 400

11k ohm ±5% 1/8W smd

569-0105-113

R 401

10M ohm ±5% 1/8W smd

569-0105-106

R 402

11k ohm ±5% 1/8W smd

569-0105-113

R 403

11k ohm ±5% 1/8W smd

569-0105-113

R 404

11k ohm ±5% 1/8W smd

569-0105-113

R 405

11k ohm ±5% 1/8W smd

569-0105-113

R 406

11k ohm ±5% 1/8W smd

569-0105-113

R 407

11k ohm ±5% 1/8W smd

569-0105-113

R 408

100k ohm ±5% 1/8W smd

569-0105-104

R 409

11k ohm ±5% 1/8W smd

569-0105-113

R 410

11k ohm ±5% 1/8W smd

569-0105-113

R 411

11k ohm ±5% 1/8W smd

569-0105-113

R 412

11k ohm ±5% 1/8W smd

569-0105-113

R 413

11k ohm ±5% 1/8W smd

569-0105-113

R 414

11k ohm ±5% 1/8W smd

569-0105-113

R 415

11k ohm ±5% 1/8W smd

569-0105-113

R 416

11k ohm ±5% 1/8W smd

569-0105-113

R 417

11k ohm ±5% 1/8W smd

569-0105-113

R 418

11k ohm ±5% 1/8W smd

569-0105-113

R 419

11k ohm ±5% 1/8W smd

569-0105-113

R 420

11k ohm ±5% 1/8W smd

569-0105-113

R 422

11k ohm ±5% 1/8W smd

569-0105-113

R 423

11k ohm ±5% 1/8W smd

569-0105-113

R 424

11k ohm ±5% 1/8W smd

569-0105-113

R 425

11k ohm ±5% 1/8W smd

569-0105-113

R 426

11k ohm ±5% 1/8W smd

569-0105-113

R 427

11k ohm ±5% 1/8W smd

569-0105-113

R 428

11k ohm ±5% 1/8W smd

569-0105-113

R 429

11k ohm ±5% 1/8W smd

569-0105-113

R 430

11k ohm ±5% 1/8W smd

569-0105-113

R 431

11k ohm ±5% 1/8W smd

569-0105-113

R 432

11k ohm ±5% 1/8W smd

569-0105-113

R 433

11k ohm ±5% 1/8W smd

569-0105-113

R 434

11k ohm ±5% 1/8W smd

569-0105-113

R 435

11k ohm ±5% 1/8W smd

569-0105-113

R 436

11k ohm ±5% 1/8W smd

569-0105-113

R 437

11k ohm ±5% 1/8W smd

569-0105-113

R 438

11k ohm ±5% 1/8W smd

569-0105-113

R 439

11k ohm ±5% 1/8W smd

569-0105-113

R 440

11k ohm ±5% 1/8W smd

569-0105-113

R 441

11k ohm ±5% 1/8W smd

569-0105-113

R 442

11k ohm ±5% 1/8W smd

569-0105-113

R 444

100k ohm ±5% 1/8W smd

569-0105-104

Ref No.

Description

Part No.

R 445

11k ohm ±5% 1/8W smd

569-0105-113

R 446

11k ohm ±5% 1/8W smd

569-0105-113

R 447

11k ohm ±5% 1/8W smd

569-0105-113

R 448

11k ohm ±5% 1/8W smd

569-0105-113

R 449

100k ohm ±5% 1/8W smd

569-0105-104

R 450

22k ohm ±5% 1/8W smd

569-0105-223

R 451

22k ohm ±5% 1/8W smd

569-0105-223

R 452

11k ohm ±5% 1/8W smd

569-0105-113

R 453

22k ohm ±5% 1/8W smd

569-0105-223

R 454

11k ohm ±5% 1/8W smd

569-0105-113

R 455

22k ohm ±5% 1/8W smd

569-0105-223

R 456

11k ohm ±5% 1/8W smd

569-0105-113

R 457

22k ohm ±5% 1/8W smd

569-0105-223

R 458

11k ohm ±5% 1/8W smd

569-0105-113

R 459

22k ohm ±5% 1/8W smd

569-0105-223

R 460

11k ohm ±5% 1/8W smd

569-0105-113

R 461

22k ohm ±5% 1/8W smd

569-0105-223

R 462

11k ohm ±5% 1/8W smd

569-0105-113

R 463

11k ohm ±5% 1/8W smd

569-0105-113

R 464

4.7k ohm ±5% 1/8W smd

569-0105-472

R 465

11k ohm ±5% 1/8W smd

569-0105-113

R 466

4.7k ohm ±5% 1/8W smd

569-0105-472

R 467

11k ohm ±5% 1/8W smd

569-0105-113

R 468

11k ohm ±5% 1/8W smd

569-0105-113

R 469

11k ohm ±5% 1/8W smd

569-0105-113

R 470

15k ohm ±5% 1/8W smd

569-0105-153

R 471

4.7k ohm ±5% 1/8W smd

569-0105-472

R 472

11k ohm ±5% 1/8W smd

569-0105-113

R 473

2.2k ohm ±5% 1/8W smd

569-0105-222

R 474

11k ohm ±5% 1/8W smd

569-0105-113

R 475

150 ohm ±5% 1/8W smd

569-0105-151

R 480

100 ohm ±5% 1/8W smd

569-0105-101

R 481

100 ohm ±5% 1/8W smd

569-0105-101

R 482

11k ohm ±5% 1/8W smd

569-0105-113

R 483

11k ohm ±5% 1/8W smd

569-0105-113

R 484

11k ohm ±5% 1/8W smd

569-0105-113

R 485

11k ohm ±5% 1/8W smd

569-0105-113

R 486

220 ohm ±5% 1/8W smd

569-0105-221

R 487

220 ohm ±5% 1/8W smd

569-0105-221

R 488

220 ohm ±5% 1/8W smd

569-0105-221

R 489

220 ohm ±5% 1/8W smd

569-0105-221

R 490

100 ohm ±5% 1/8W smd

569-0105-101

R 492

6.8k ohm ±5% 1/8W smd

569-0105-682

R 493

6.8k ohm ±5% 1/8W smd

569-0105-682

R 494

11k ohm ±5% 1/8W smd

569-0105-113

Ref No.

Description

Part No.

Audio/Logic Board

Summary of Contents for Summit DM 975x

Page 1: ...Fifth Printing December 2000 Supersedes 001 9750 005 2 97 SUMMIT DM 975X 977X 800 or 900 MHZ MOBILE RADIO MULTI NET II 13 6 VDC 15 or 30 Watts Part No 242 97xx 111 MULTI NET II MOBILE SERVICE MANUAL ...

Page 2: ...y of communication needs E F Johnson produces equipment for land mobile radio and mobiletelephone services which include business industrial government pub lic safety and personal users Viking Head EF Johnson logo Summit Multi Net LTR Viking Avenger and Call Guard are registered trademarks of the E F Johnson Company All other company and or product names used in this manual are trademarks and or r...

Page 3: ...OPTION SWITCH KEY CAPS2 8 2 7 INSTALLING DC NOISE FILTER KIT 2 9 2 8 TRANSCEIVER MOUNTING TRAY INSTALLATION 2 10 Description 2 10 Installation 2 10 Locking and Unlocking Transceiver 2 10 3 OPERATION 3 1 FEATURES 3 1 3 2 FRONT PANEL CONTROLS DISPLAY 3 1 Front Panel Controls 3 1 Display 3 3 3 3 OPERATING MODES 3 4 Introduction 3 4 Multi Net and LTR Modes 3 4 Conventional Mode 3 4 Multi Net and LTR S...

Page 4: ...ber 4 2 Computers Running Windows 4 2 Software Installation 4 2 Hardware Hookup 4 3 Minimum Free Memory Required 4 3 Starting The Program 4 3 Header Information 4 3 Special Keys 4 3 4 2 MAIN MENU 4 5 Introduction 4 5 Set Up New Configuration File 4 5 Open Configuration File 4 5 Modify Current Configuration File 4 5 Upload Configuration From Radio 4 6 Download Configuration To Radio 4 6 Print Curre...

Page 5: ...IVER CIRCUIT DESCRIPTION 6 7 RF Amplifier Q290 6 7 First Mixer Q205 6 8 Crystal Filters Z205 Z206 IF Amplifier 6 8 Second Mixer Detector U200 6 8 Audio Power Amplifier U100 6 9 13 8 Volt Switch Q100 Q103 Q106 Q108 6 9 6 4 TRANSMITTER CIRCUIT DESCRIPTION 6 9 Power Amplifier Module U500 6 9 Driver Q500 Final Amplifier Q501 6 9 Antenna Switch CR502 CR506 CR507 6 9 Power Control U504 Q511 Q502 Q506 6 ...

Page 6: ...chematic 10 3 RPI To Transceiver Programming Cable 10 4 RPI Part No 023 9800 000 Board Layout 10 4 RF and PA Board Component Locator Guide 10 5 Audio Logic Board Comp Locator Guide 10 8 Interconnect Schematic 10 11 Display Board Schematic 10 12 Display Board Layout 10 13 RF Board Revised 800 MHz Schematic 10 14 800 900 MHz Board Layout 10 15 900 MHz Schematic 10 16 Unrevised 800 MHz Schematic 10 1...

Page 7: ... 4 9 4 7 Telephone Numbers Screen 4 11 4 8 Setup Change Unique ID Screen 4 11 4 9 Main Universal Interface Screen 4 15 4 10 System Universal Interface Screen 4 16 5 1 Multi Net System Components 5 1 6 1 Transceiver Block Diagram 6 3 6 2 U801 Block Diagram 6 5 7 1 Simplified Synthesizer Block Diagram 7 3 8 1 Test Cables 8 1 8 2 Transmitter Test Setup 8 2 8 3 Receiver Test Setup 8 4 8 4 Alignment Po...

Page 8: ...Johnson RPI Remote Programming Interface and programming software listed in Table 1 1 Transceiver operating parameters are stored in an EEPROM repro grammable memory Refer to Section 4 for more programming information The operating code firmware for the micropro cessor is stored in a flash type memory device This allows the operating program to be updated using E F Johnson Write On programming sof...

Page 9: ... discarded The accessory cable is used to connect such things as an external speaker public address ignition sense input and a horn alert to the transceiver It includes two 22 foot and three 2 foot wires that are connected as required to external points The adapter cable is used to connect a 86xx series power cable to these transceivers Key Cap Kit This kit includes key caps labeled for all the fu...

Page 10: ...nuation of vehicle electrical system noise Installa tion is described in Section 2 7 Table 1 1 ACCESSORIES Accessory Part No Mounting Accessories 1 Mounting bracket hardware kit 023 9750 012 DC power cable hardware 22 023 9750 010 Accessory cable 023 9750 011 Key cap kit Summit 587 9650 008 Lockable Mounting Tray 585 7000 185 Adapter cable to use 86xx series power cable with 97xx 023 9650 006 Micr...

Page 11: ...s High Power NPSPAC 8620 800 Rem Mount 35W 16 11 Yes High Power Remote Mount 8621 800 Rem Mount 35W 16 11 Yes High Pwr Rem Mt NPSPAC 8622 800 Rem Mount 12W 16 11 Talk Arnd N A Full Duplex 8655 900 Frt Mount 30W 16 11 Yes High Power 9753 Summit DM 800 Frt Mount 15W 32 11 Yes Hi Spec Full Feature Low Pwr 9754 Summit DM 800 Rem Mount 15W 32 11 Yes Hi Spec Full Feature Low Pwr 9755 Summit DM 800 Frt M...

Page 12: ...vailability of local and factory repair facilities Customer Service hours are 7 30 a m 4 30 p m Central Time Monday Friday From within the continental United States the Customer Service Department can be reached at the following toll free number 1 800 328 3911 When your call is answered at the E F Johnson Company you will hear a brief message informing you of numbers that can be entered to reach v...

Page 13: ...zation RA numbers are not necessary unless you have been given one by the Field Service Department They require RA numbers for exchange units or if they want to be aware of a specific problem If you have been given an RA number refer ence this number on the Factory Repair Request Form sent with the unit The repair lab will then contact the Field Service Department when the unit arrives 1 9 REPLACE...

Page 14: ...m L 5 0 lb 2 3 kg Power Requirement 13 6 volts negative ground Compliance FCC Parts 15 and 90 RECEIVER Sensitivity 12 dB SINAD 0 30 microvolt Selectivity 75 dB Intermodulation 75 dB Spurious and Image Rejection 75 dB 70 dB half IF Maximum Channel Spread 18 MHz Audio Response 6 dB per octave de emphasis per TIA 603 specification Audio Power Output Distortion 12 watts with external 4 ohm speaker dis...

Page 15: ...3 21 1 cm L 5 0 lb 2 3 kg Power Requirement 13 6 volts negative ground Compliance FCC Parts 15 and 90 RECEIVER Sensitivity 12 dB SINAD 0 30 microvolt Selectivity 70 dB Intermodulation 70 dB Spurious and Image Rejection 75 dB Maximum Channel Spread 6 MHz Audio Response 6 dB per octave de emphasis per TIA 603 specification Audio Power Output Distortion 12 watts with external 3 ohm speaker distortion...

Page 16: ...te speaker 250 0151 006 6 Transceiver mounting bracket 017 2226 034 Butt splice connector 2 586 9008 061 2 1 GENERAL 2 1 1 SCOPE OF INSTRUCTIONS Since each installation is somewhat unique the following installation instructions are intended only as a general guide to installing this transceiver Described are the intended use of the mounting hardware and the electrical connections that should be ma...

Page 17: ...y in case of an accident 2 2 TRANSCEIVER INSTALLATION 2 2 1 GENERAL Cable and Hardware Kit Part No 023 9750 010 includes a 22 foot power cable microphone hanger hanger ground wire splice connectors and all the hardware such as screws that is normally required for installation Transceiver Mounting Kit Part No 023 9750 012 includes a mounting bracket with knobs and mounting screws Accessory Wire Kit...

Page 18: ...sory pigtail coming from the back of the transceiver It is used for connecting the ignition sense input and the external speaker horn alert public address and external emergency switch accessories Two 8 pin connectors are included One has a jumper installed from pin 1 to 3 for routing audio to the internal speaker see next section Also included are two 22 foot and three 2 foot wires with attached ...

Page 19: ...orn alert feature enables the vehicle horn or some other type of alert such as the lights when a call is received that is programmed for this feature For more operation information refer to Section 2 4 4 When the horn alert is enabled pin 4 of the acces sory connector goes low for 0 5 second and then high for 0 5 second for three cycles It then goes back to the disabled mode which is a high impeda...

Page 20: ...osition of these switches or Item No Description Part Number Item No Description Part Number 1 Amplified dynamic mic 250 0740 310 8 Knob 4 547 0016 005 2 Screw 4 20 x 5 8 thrd frmg 3 575 5604 020 9 Power cable 22 and hard 023 9750 010 3 Screw 4 24 x 1 4 sheet metal 3 575 3604 008 10 Accessory wire and hardware 023 9750 011 4 Microphone hanger clip 023 3514 001 11 5 remote speaker optional 250 0151...

Page 21: ...m of the levels set by both controls When Disabled is selected only the transceiver volume control sets the volume level In the dual control configuration the levels of the transceiver and control unit internal speakers are the same The Local setting provides a locally controlled audio output that can be routed to a separate audio amplifier However in the current configuration this setting cannot ...

Page 22: ...round TP100 to select the setup mode c To change the default backlight condition press the Select switch so that the backlight is either on or off as desired d To change the LCD viewing angle rotate the Select switch in either direction to achieve the desired sharpness e When the desired configurations have been selected exit the setup mode by turning power off and then on again The selected condi...

Page 23: ...n dual control applications 2 5 5 MICROPHONE HANGER SENSE When the blank front panel is installed on a trans ceiver the microphone hanger line goes to an off hook high state This is sensed by the microprocessor which may then initiate such actions as halting scan ning or enabling the conventional monitor mode To prevent this from happening the transceiver should be programmed as a remote mount typ...

Page 24: ...e PC board as shown in Figure 2 5 This pro vides the needed access to the front of the choke b Prepare the leads of the choke so that they are approximately 1 8 below the lowest part of the choke c Install the choke in the PC board holes provided and solder the leads using a soldering iron with a long narrow tip Removal of the PA board should not be required d Install the blue and red power cable ...

Page 25: ... bracket can be used to mount the trans ceiver directly to the vehicle b Install lock bracket MP1 using the four self drilling screws HW3 and washers HW5 included Make sure that there is nothing under the mounting loca tion that will be damaged 2 8 3 LOCKING AND UNLOCKING TRANSCEIVER To insert the transceiver with attached mounting bracket into the locking bracket set it over the locking bracket a...

Page 26: ... system ringback System search Transpond Transmit inhibit CONVENTIONAL FEATURES Busy indicator Tone CTCSS and digital Call Guard squelch Transmit disable on busy Monitor switch Repeater talk around Priority group sampling Receive only channels 3 2 FRONT PANEL CONTROLS AND DISPLAY NOTE The remote control unit front panel is the same as the front panel on front mount transceivers 3 2 1 FRONT PANEL C...

Page 27: ...point for the micro phone or the programming cable when programming the transceiver see Section 4 Speaker There is a 5 watt 16 ohm speaker located behind the grille If higher power output is desired an optional 4 ohm external speaker may be used to provide up to 12 watts of power The internal speaker is disabled when an external speaker is used see Sections 2 4 2 and 2 5 4 REAR PANEL JACKS AND CON...

Page 28: ...indicates that a call is being received on a priority 2 group Refer to Section 3 5 17 for more information ON OF When the menu mode is selected by the MENU switch ON indicates that the displayed parameter is active and OF indicates that it is inactive Indicates that the function controlled by the option switch above it is active For example this symbol below the Scan switch indicates that the scan...

Page 29: ...which calls are received on that channel Channel selection is performed manually by selecting a system Monitoring can be performed auto matically or manually see next paragraph When it is performed automatically a special tone and display message indicate a busy condition Otherwise there are no tones or display messages to indicate busy and out of range conditions Monitoring Before Transmitting If...

Page 30: ... the transceiver detects a call with a higher priority ID than the one it is receiving it immediately drops that call and switches to another repeater to receive the higher priority call The priority order of the receive ID codes is as follows 1 Fixed Priority ID Code 1 2 Fixed Priority ID Code 2 3 Selectable ID Codes with last sel revert prog 4 Block ID codes For example if a call is being receiv...

Page 31: ...otating symbols are present in the status display between the system and group numbers as described in Section 3 2 Scanning is sequential through the programmed systems in the current bank unless they have been deleted from the scan list or single site scan is used The selected system and group can be changed while scanning using the Select switch in the normal manner Scanning temporarily halts wh...

Page 32: ... Section 3 6 6 are scanned unless they are deleted from the scan list 3 4 3 SCAN RESUME DELAY NOTE The following timers are also used is some cir cumstances when not scanning such as when priority or block calls are received as described in Section 3 3 4 Receive Delay When a message is received while scanning there is a programmable delay of 0 7 seconds before scan ning resumes if it has not been ...

Page 33: ... programming described in the preceding section takes precedence 3 4 6 SCAN LIST PROGRAMMING Systems and groups can be added to or deleted from the scan list if the transceiver is equipped with an A D add delete option switch The bar above the system or group indicates which will change when the A D switch is pressed To switch this bar between the system and group displays press the Select switch ...

Page 34: ...elected group of each system The group scan list can be programmed as described in the preceding section In addition the scan resume delay information described in Section 3 4 3 also applies to group scanning 3 4 8 SCANNING THE VARIOUS TYPES OF SYSTEMS Scanning Multi Net and LTR Systems Group scan programming described in the preceding section controls whether all groups or only the last selected ...

Page 35: ...m groups to or delete them from the scan list Pressing this switch changes the status of either the displayed system or group The bar above the number indicates which is changed To move this bar between the system and group press the Select switch An asterisk in the status display next to the system or group indicates that it is in the scan list Refer to Section 3 4 6 for more information 3 5 3 AU...

Page 36: ... option switch can be used to activate this feature The alphanumeric display indi cates RCV AUD PA when this feature is active The output for this function is also pin 7 of the accessory cable 3 5 11 HOME SYSTEM GROUP Each bank can be programmed with a home system group that can be selected by pressing the HOME option switch This function can also be used in the scan mode scanning halts for the le...

Page 37: ...ng software The Select switch is rotated to choose the desired condition and then pressed to select that condition Refer to Section 3 7 3 for more infor mation 3 5 23 TALK AROUND The Menu Mode TALKAROUND parameter or TA option switch is used to turn talk around on and off on conventional groups Refer to Section 3 9 4 for more information 3 5 24 VIEWING ANGLE The Menu Mode VIEW ADJ parameter sets t...

Page 38: ...rans mitter always keys when the PTT switch is pressed unless the Transmit Disable On Busy feature is being used With later models a proceed tone delay of 125 1875 ms can be programmed on each system and then individually enabled or disabled on each dispatch group a fixed delay of approximately 500 ms occurs with interconnect and auxiliary calls This feature can be used to delay speaking with call...

Page 39: ...ack on If the ignition switch does not control power the horn alert is always enabled when transceiver power is on Mode A2 If the horn alert is to be always enabled when transceiver power is on this mode could be used Mode B This mode could be used if the ignition switch controls power The horn alert is then always disabled when the ignition switch is on and enabled during the turn off delay Howev...

Page 40: ...ikely to be pressed acciden tally An external switch such as a foot actuated type can also be used see Section 2 4 6 The general operation of Emergency Calls is described in Section 5 8 11 The two basic operating modes of the emergency switch are Manual Transmit and Automatic Transmit Multi Net systems can be programmed for either type LTR and conventional systems can be programmed for the manual ...

Page 41: ... after only a short transmission If temperature continues to increase at the 2 watt level to the point where more serious damage could occur this should seldom happen the transmitter is disabled a warning tone sounds and NO POWER is displayed The transmitter remains disabled until temperature decreases to the first temperature limit Power output is then produced at the 2 watt level The temperature...

Page 42: ...icrophone A unique identification of up to ten characters is stored with each number This identification is then displayed when the number is recalled the actual tele phone number that is transmitted is not displayed The identification could include for example up to ten digits of the number being dialed or the name of the person or place being called To use the Phone Mode proceed as follows a Pre...

Page 43: ...ted When the access is successful a beep standard and auxiliary calls or a dial tone tele phone calls sounds and the call can then be placed in the normal manner When auto registration is active see next section and the transceiver software is Version 206 or later see Section 3 6 14 the queue status is maintained even if registration on another site occurs With earlier versions of software the que...

Page 44: ...ample if System 3 was selected and System 5 is the next system with a different site number that system becomes the revert system if it can be accessed Revert group selection is determined by the programming of the bank Wide Area Group Tracking parameter If this parameter is programmed Yes the revert group does not change it is the same as it was before registration on the new site occurred If thi...

Page 45: ...individual mobile or a group of mobiles at the same site or another Multi Net site when several Multi Net systems form a network Calls to specific mobiles are called Unique ID calls and calls to groups are called Directed Group calls Directed Group calls allow communication with groups that are otherwise not accessible because no selectable system has been programmed with the home repeater or grou...

Page 46: ...git unique ID of mobile dispatcher Unique ID Call Directed Site 3 digit site ID 4 digit unique ID of mobile dispatcher Directed Group Call Current Site 2 digit home repeater number 3 digit group ID Directed Group Call Directed Site 3 digit site number 2 digit home repeater number 3 digit group ID e Release the PTT switch if it was pressed to dial the number A beep should then sound which indicates...

Page 47: ... transmitter does not key the intercept tone sounds and TX INHIBIT is indicated in the alphanumeric display To make another call attempt the PTT switch must be released and then pressed again However it is a good idea to wait a few seconds because the 5 second timer does not count down while the PTT switch is pressed It is not possible to complete the call by keeping the PTT switch pressed with th...

Page 48: ...ssed only once If no system could be accessed the intercept tone sounds NO RIC FND is displayed the feature deactivates and the system group does not change If a system is accessed the new system group is selected and a dial tone sounds If the number is not dialed within a few seconds normal operation resumes This mode can be canceled at any time by activating any user control 3 8 3 TRANSPOND Each...

Page 49: ...ode is programmed is actually a seed for a special algorithm used to generate the 23 bit data word The data is transmitted at a rate of 134 4 bits per second Therefore approximately six words are transmitted each second When the data is decoded 23 bit samples are taken and then the bits are rotated to determine if a valid code was received Digital Call Guard squelch can be programmed as normal or ...

Page 50: ...uptions of the audio signal that occur when sampling takes place This feature is available only on conventional systems In addition sampling does not occur while listening to a Multi Net or LTR call or when transmit ting any type of call Call Guard squelch is not detected on the first priority group but is detected on the second priority group if is programmed If the PRI option switch or the Menu ...

Page 51: ...n detected by the system Proceed Dialing Tone When placing a landside originate call to a mobile the caller may dial the number of the system and then when the system answers a number specifying the mobile being called This tone sounds to indicate when the number of the mobile should be entered LTR TELEPHONE CALL TONES NOTE The following tones are produced by the LTR RIC interconnect equipment and...

Page 52: ...r to Section 3 6 10 NO RIC FND Indicates that no RIC system groups could be found in the Phone Mode refer to Section 3 6 13 NO TALK Indicates that talk around has been disabled on the selected conventional system by programming refer to Section 3 9 4 NOT MULTI Indicates that an attempt was made to enable a Multi Net feature on an LTR or conventional system NOT ON CONV Indicates that an attempt was...

Page 53: ...tor shorted together P2 pins 10 and 13 When the test mode is entered the display indicates RX TX RSSI which is the first test function The various test functions are selected by pressing or rotating the front panel Select switch The display indicates the mode that is currently selected and also such things as the selected frequency power level or operating mode While in the test mode the front pan...

Page 54: ...1 9625 MHz 009 TA 935 1125 MHz 935 1125 MHz 252 TA 938 1500 MHz 938 1500 MHz 471 TA 940 8875 MHz 940 8875 MHz TA Talk around channels transmit frequency is the same as the receive frequency The test channel block should be selected while one of the eight test functions listed above is displayed This is done by pressing the center option switch above the display The selected block 0 1 2 is indicate...

Page 55: ...power output is indicated by 0 127 as described in Section 3 11 3 The settings are saved in memory when this mode is exited The power levels that can be set can be any power in the minimum to maximum range for that transceiver see Section 8 The 2W setting can also be in this range or 1 2 watts 3 11 6 MODULATION BALANCE The BAL ADJUST function is used to set modu lation balance over the entire stan...

Page 56: ... memory MS DOS version 3 0 or higher An unused serial port The cables from the RPI to the computer and transceiver are not included with the RPI The 9800 RPI has a female DB9 connector for the computer connection Since most computers have a male DB9 or DB25 connector a male DB9 to female DB9 or DB25 cable is usually required Earlier RPIs such as the 9750 have a female DB25 connector These are stan...

Page 57: ...ters screen for specifying if encryption is in stalled See Section 3 6 12 for more information Version 204 Became available in early 1996 This version has an additional parameter on the Main Radio Parameters screen for specifying the horn alert operat ing mode see Section 3 6 4 Version 205 Became available mid 1997 This version added an additional Start At Home parameter on the Create Edit Bank sc...

Page 58: ...rent direc tory as described in Section 4 1 10 NOTE The program automatically detects most video cards If it does not operate properly with a mono chrome monitor try starting it in the monochrome mode by typing SUMMIT M 4 1 11 HEADER INFORMATION The following information is contained in the header area at the top of the screen Free Space Displays the amount of space remaining in the transceiver EE...

Page 59: ...TRANSCEIVER PROGRAMMING 4 4 Revised December 2000 Part No 001 9750 007 Figure 4 2 Programming Software Menu Structure ...

Page 60: ...in the preceding section F5 Change Dir Displays the screen that changes the current directory When a configuration file is loaded from or saved to disk it is always from or to the current directory Therefore if you need to change this directo ry select this screen F6 Show Files Displays the names of all radio con figuration files that are in the current directory Figure 4 3 Main Menu F7 Show SN Di...

Page 61: ...rrent file The computer port used for the printer can be selected as described in the next section The file information can also be printed to a disk file instead of the printer It is always printed to a file called PRINTOUT PRN Therefore if there is already a file by that name in the current directory it will be overwritten The screen displayed by this function follows 4 2 8 MODIFY PRINTER SERIAL...

Page 62: ...DIT MAIN RADIO PARAMETERS This function selects the Main Radio Parameters screen which is used to program transceiver parame ters that are the same for all banks and systems This screen and the parameters it programs are described in Section 4 1 The Status Definitions section of the screen is used to program the status conditions that are displayed by the STAT option switch or Menu Mode STATUS par...

Page 63: ...pha tag The system alpha tag is used only for programming and is not displayed by the transceiver Edit System The Edit System function is used to change the parameters of a current system The system to be edited is selected from a list of the current systems that is displayed The arrow and Return keys are used to select the desired system The Multi Net LTR and conventional Create Edit System scree...

Page 64: ...TRANSCEIVER PROGRAMMING 4 9 Revised December 2000 Part No 001 9750 007 Figure 4 5 Define Option Buttons Screen Figure 4 6 Setup Menu Functions Screen ...

Page 65: ...IT COPY DELETE BANK Create Bank This Create Bank function is used to create a new bank At least one bank must be created even if banks are not going to be selected Banks are identified by alpha tag and selected by the BANK option switch or Bank Select Menu Mode parameter An alpha tag can have up to ten characters Most printable ASCII characters can be used except the following After the alpha tag ...

Page 66: ...elected to place telephone calls see Section 3 6 13 The Telephone Numbers screen shown in Figure 4 7 can then be used to prestore up to ten tele phone numbers This screen is selected by the Setup Prestored Telephone Numbers parameter in the Modify Radio File menu see Figure 4 4 The alpha tag and not the telephone number is displayed when a number is recalled This alpha tag can include any ten char...

Page 67: ...t system priority being transmitted by the repeater determine if the system can be accessed If the priority number being transmitted is greater than the priority number assigned to the ID code being trans mitted the system cannot be accessed at that time There are various schemes that the repeater may use to determine the current system priority Refer to the setup section of the repeater service m...

Page 68: ... software does not allow the transceiver to be programmed if all programmed systems do not have the same number of programmed groups However it does not check to make sure that the same groups are programmed in each system 4 5 PROGRAMMING ONE TRANSCEIVER WITH ANOTHER CLONING One transceiver can be used to program another with identical information One use of this type of programming may be to repr...

Page 69: ...isted in setup as described in Section 4 1 1 Only RPI Part No 023 9750 000 or 023 9800 000 can be used the earlier 023 5810 000 model will not work NOTE The RPI must always be connected to the front panel jack of the transceiver it cannot be connected to the microphone jack of a remote control unit b Set the switch on the RPI so that it is toward the LED c Start the program by typing DM_LOAD Enter...

Page 70: ...ted by pressing the F4 key from the Main Radio Parameters screen see Section 4 3 2 The parameters that can be programmed using this screen and the available choices are as follows NOTE For more information on the configuration selected by each option refer to Appendix B MAIN PARAMETERS Disable UI Bus Yes No Audio Circuit States Audio_Rx Modes 1 2 3 4 Audio_Tx Modes 1 2 3 4 NOTE The system level pr...

Page 71: ...1 4 Undefined Audio_Tx Modes 1 4 Undefined Default condition If Undefined is selected the radio level parameter programmed in the preceding section is in effect 4 7 4 AUXILIARY AND EMERGENCY SWITCH PROGRAMMING When the Auxiliary 2 function is programmed it uses the OUTPUT B line of the universal interface see Section 3 5 4 For proper operation of this switch OUTPUT B must be programmed for the def...

Page 72: ...ansceiver with Version 205 or earlier operating software is programmed the times are 10 20 30 minutes 1 2 or 4 hours Conv Proceed to Talk Tone Enabled Disabled Enables or disables the proceed to talk tone on conventional systems It is always enabled on Multi Net and LTR systems Section 3 6 3 Transmit Time Out Time 0 5 5 minutes in 0 5 min steps Disabled Programs the Time Out Timer Section 3 6 1 Mi...

Page 73: ...perating mode Section 3 6 4 Radio Can Be Disabled MN Only Yes No Selects if the transceiver can be disabled by the Multi Net Mobile Disable message Section 5 8 5 Radio Can Be Interro gated MN Only Yes No Selects if the transceiver can be interrogated to determine its status Sec tion 5 8 4 Status Definitions Up to 10 characters A Z 0 9 etc Programs the message that is displayed for up to eight stat...

Page 74: ...tem can be programmed with a different unique ID if necessary Emergency System Group Automatic Any programmed system group Auto Yes or No Programs the system group on which emergency calls are made when the emergency switch is pressed if applicable Auto specifies if automatic transmitting occurs Section 3 6 8 Power Level 1 2 3 4 2W Programs the output power selected by this system The power output...

Page 75: ...icator lights when a call is received on that group Section 3 6 2 Horn Enabled Disabled Programs if the horn sounds when a call is received on that group Section 3 6 4 Encrypt Enabled Disabled Programs if encryption is used on calls received and transmitted on that group Section 3 6 12 Scan List Yes No Programs if that group is scanned by the group scan feature Section 3 4 7 Pri Priority 1 5 Progr...

Page 76: ...up to all 250 If an ID code within this block is decoded up to 5 seconds before the PTT switch is pressed the transmitter does not key Section 3 7 5 Block Decode 1 250 Programs a block of ID codes up to all 250 that are decoded regardless of the group selected Section 3 3 4 Emergency System Group Auto Any programmed system group Auto Yes or No Programs the system group on which emergency calls are...

Page 77: ...Enabled Disabled Programs if the horn sounds when a call is received on that group Section 3 6 4 Encrypt Enabled Disabled Programs if encryption is used on calls received and transmitted on that ID code Section 3 6 12 Scan List Yes No Programs if that group is scanned by the group scan feature Section 3 4 7 Transpond Enabled Disabled Programs if transponding occurs when a call is received on that ...

Page 78: ...stem alpha tag is used only for programming and is not displayed by the trans ceiver RIC Yes No Programs if the repeater is equipped with RIC interconnect Scan List Yes No Programs if the system is scanned Section 3 4 6 Group Scan Enabled Disabled Programs if group scanning occurs on the system Section 3 4 7 Emergency System Group Auto Any programmed system group Auto Yes or No Programs the system...

Page 79: ... Section 3 6 2 CG Value Tone number or digital code If CG was selected the tone number from 1 38 is entered If digital was selected the digital code is selected These numbers are listed in Table 4 6 Send TO Transmit Turn Off Code Yes No If yes is programmed the Call Guard turn off code is sent when the PTT switch is released Section 3 6 2 Talk Around Yes No If yes is programmed transmission is on ...

Page 80: ...iority 1 system group when priority group sampling is used on conventional systems Section 3 5 17 Priority 2 System Group Any conventional system group in selected bank Programs the priority 2 system group if used when priority group sam pling is used on conventional systems Section 3 5 17 Emergency System Group Default Any system group in the current configuration file Programs the default system...

Page 81: ...isplayed Section 3 5 11 Table 4 6 Call Guard CTCSS DCS Codes and Tones Recommended Tone Call Guard Codes Code Freq Code Freq Code Freq Code Freq Code Freq 09 91 5 18 123 0 27 167 9 36 233 6 01 67 0 10 94 8 19 127 3 28 173 8 37 241 8 02 71 9 11 97 4 20 131 8 29 179 9 38 250 3 03 74 4 12 100 0 21 136 5 30 186 2 39 69 3 04 77 0 13 103 5 22 141 3 31 192 8 40 206 5 05 79 7 14 107 2 23 146 2 32 203 5 41...

Page 82: ...2875 53 53 852 3125 807 3125 54 54 852 3375 807 3375 55 55 852 3625 807 3625 56 56 852 3875 807 3875 57 57 852 4125 807 4125 58 58 852 4375 807 4375 59 59 852 4625 807 4625 60 60 852 4875 807 4875 61 61 852 5125 807 5125 62 62 852 5375 807 5375 63 63 852 5625 807 5625 64 64 852 5875 807 5875 65 65 852 6125 807 6125 66 66 852 6375 807 6375 67 67 852 6625 807 6625 68 68 852 6875 807 6875 69 69 852 7...

Page 83: ... 854 9875 809 9875 161 161 855 0125 810 0125 162 162 855 0375 810 0375 163 163 855 0625 810 0625 164 164 855 0875 810 0875 165 165 855 1125 810 1125 166 166 855 1375 810 1375 167 167 855 1625 810 1625 168 168 855 1875 810 1875 169 169 855 2125 810 2125 170 170 855 2375 810 2375 171 171 855 2625 810 2625 172 172 855 2875 810 2875 173 173 855 3125 810 3125 174 174 855 3375 810 3375 175 175 855 3625 ...

Page 84: ... 857 6875 812 6875 269 269 857 7125 812 7125 270 270 857 7375 812 7375 271 271 857 7625 812 7625 272 272 857 7875 812 7875 273 273 857 8125 812 8125 274 274 857 8375 812 8375 275 275 857 8625 812 8625 276 276 857 8875 812 8875 277 277 857 9125 812 9125 278 278 857 9375 812 9375 279 279 857 9625 812 9625 280 280 857 9875 812 9875 281 281 858 0125 813 0125 282 282 858 0375 813 0375 283 283 858 0625 ...

Page 85: ... 860 3875 815 3875 377 377 860 4125 815 4125 378 378 860 4375 815 4375 379 379 860 4625 815 4625 380 380 860 4875 815 4875 381 381 860 5125 815 5125 382 382 860 5375 815 5375 383 383 860 5625 815 5625 384 384 860 5875 815 5875 385 385 860 6125 815 6125 386 386 860 6375 815 6375 387 387 860 6625 815 6625 388 388 860 6875 815 6875 389 389 860 7125 815 7125 390 390 860 7375 815 7375 391 391 860 7625 ...

Page 86: ... 863 0875 818 0875 485 485 863 1125 818 1125 486 486 863 1375 818 1375 487 487 863 1625 818 1625 488 488 863 1875 818 1875 489 489 863 2125 818 2125 490 490 863 2375 818 2375 491 491 863 2625 818 2625 492 492 863 2875 818 2875 493 493 863 3125 818 3125 494 494 863 3375 818 3375 495 495 863 3625 818 3625 496 496 863 3875 818 3875 497 497 863 4125 818 4125 498 498 863 4375 818 4375 499 499 863 4625 ...

Page 87: ... 592 592 865 7875 820 7875 593 593 865 8125 820 8125 594 594 865 8375 820 8375 595 595 865 8625 820 8625 596 596 865 8875 820 8875 597 597 865 9125 820 9125 598 598 865 9375 820 9375 599 599 865 9625 820 9625 600 600 865 9875 820 9875 601 866 0000 821 0000 602 601 866 0125 821 0125 603 866 0250 821 0250 604 602 866 0375 821 0375 605 603 866 0500 821 0500 606 604 866 0625 821 0625 607 605 866 0750 ...

Page 88: ... 867 2375 822 2375 701 695 867 2500 822 2500 702 696 867 2625 822 2625 703 697 867 2750 822 2750 704 698 867 2875 822 2875 705 699 867 3000 822 3000 706 700 867 3125 822 3125 707 701 867 3250 822 3250 708 702 867 3375 822 3375 709 703 867 3500 822 3500 710 704 867 3625 822 3625 711 705 867 3750 822 3750 712 706 867 3875 822 3875 713 707 867 4000 822 4000 714 708 867 4125 822 4125 715 709 867 4250 ...

Page 89: ...5 823 5625 807 797 868 5750 823 5750 808 798 868 5875 823 5875 809 799 868 6000 823 6000 810 800 868 6125 823 6125 811 801 868 6250 823 6250 812 802 868 6375 823 6375 813 803 868 6500 823 6500 814 804 868 6625 823 6625 815 805 868 6750 823 6750 816 806 868 6875 823 6875 817 807 868 7000 823 7000 818 808 868 7125 823 7125 819 809 868 7250 823 7250 820 810 868 7375 823 7375 821 811 868 7500 823 7500...

Page 90: ...6000 890 869 6125 824 6125 891 869 6250 824 6250 892 869 6375 824 6375 893 869 6500 824 6500 894 869 6625 824 6625 895 869 6750 824 6750 896 869 6875 824 6875 897 869 7000 824 7000 898 869 7125 824 7125 899 869 7250 824 7250 900 869 7375 824 7375 901 869 7500 824 7500 902 869 7625 824 7625 903 869 7750 824 7750 904 869 7875 824 7875 905 869 8000 824 8000 906 869 8125 824 8125 907 869 8250 824 8250...

Page 91: ...6500 53 53 935 6625 896 6625 54 54 935 6750 896 6750 55 55 935 6875 896 6875 56 56 935 7000 896 7000 57 57 935 7125 896 7125 58 58 935 7250 896 7250 59 59 935 7375 896 7375 60 60 935 7500 896 7500 61 61 935 7625 896 7625 62 62 935 7750 896 7750 63 63 935 7875 896 7875 64 64 935 8000 896 8000 65 65 935 8125 896 8125 66 66 935 8250 896 8250 67 67 935 8375 896 8375 68 68 935 8500 896 8500 69 69 935 8...

Page 92: ... 937 0000 898 0000 161 161 937 0125 898 0125 162 162 937 0250 898 0250 163 163 937 0375 898 0375 164 164 937 0500 898 0500 165 165 937 0625 898 0625 166 166 937 0750 898 0750 167 167 937 0875 898 0875 168 168 937 1000 898 1000 169 169 937 1125 898 1125 170 170 937 1250 898 1250 171 171 937 1375 898 1375 172 172 937 1500 898 1500 173 173 937 1625 898 1625 174 174 937 1750 898 1750 175 175 937 1875 ...

Page 93: ... 938 3500 899 3500 269 269 938 3625 899 3625 270 270 938 3750 899 3750 271 271 938 3875 899 3875 272 272 938 4000 899 4000 273 273 938 4125 899 4125 274 274 938 4250 899 4250 275 275 938 4375 899 4375 276 276 938 4500 899 4500 277 277 938 4625 899 4625 278 278 938 4750 899 4750 279 279 938 4875 899 4875 280 280 938 5000 899 5000 281 281 938 5125 899 5125 282 282 938 5250 899 5250 283 283 938 5375 ...

Page 94: ... 939 7000 900 7000 377 377 939 7125 900 7125 378 378 939 7250 900 7250 379 379 939 7375 900 7375 380 380 939 7500 900 7500 381 381 939 7625 900 7625 382 382 939 7750 900 7750 383 383 939 7875 900 7875 384 384 939 8000 900 8000 385 385 939 8125 900 8125 386 386 939 8250 900 8250 387 387 939 8375 900 8375 388 388 939 8500 900 8500 389 389 939 8625 900 8625 390 390 939 8750 900 8750 391 391 939 8875 ...

Page 95: ... 6625 454 454 940 6750 901 6750 455 455 940 6875 901 6875 456 456 940 7000 901 7000 457 457 940 7125 901 7125 458 458 940 7250 901 7250 459 459 940 7375 901 7375 460 460 940 7500 901 7500 461 461 940 7625 901 7625 462 462 940 7750 901 7750 463 463 940 7875 901 7875 464 464 940 8000 901 8000 465 465 940 8125 901 8125 466 466 940 8250 901 8250 467 467 940 8375 901 8375 468 468 940 8500 901 8500 469 ...

Page 96: ... Application Note Part No 009 3039 003 5 1 1 INTRODUCTION The basic components of a Multi Net system are shown in Figure 5 1 Because of the built in adapt ability of a Multi Net system one can be designed to meet the communication needs of almost any type of user The following are some operating features that a Multi Net system can provide 1 Advanced features such as up to 8000 Unique ID codes aut...

Page 97: ...ows the RNT to control the repeater The specific card that is used is determined by the type of signaling used Multi Net LTR or conventional 5 1 4 RADIO NETWORK TERMINAL RNT The RNT along with the SMM System Manage ment Module control the Multi Net system The SMM is an IBM PC or compatible computer that is running Multi Net software This computer connects to the RNT and is used by the system manag...

Page 98: ... used by the Local Government Police Fire Highway Maintenance Forestry Conservation and Special Emergency Radio services Radio Network Terminal RNT The RNT together with the System Management Module provide control of a Multi Net system The RNT can interconnect several different forms of communication to form a communication network Refer to Section 5 1 4 for more information Selectable Group Each...

Page 99: ...epeater to receive update information and that repeater became inoperative all the mobiles assigned to that home repeater would not be able to place or receive calls To prevent this from happening each site utilizing Multi Net signaling has a repeater called a status repeater which transmits update messages for all calls occurring at the site All mobiles assigned to the site can receive update mes...

Page 100: ...es are the messages to the other mobiles receiving calls If it is a home repeater these messages are for its assigned mobiles that are being trunked to other repeaters If it is the status repeater messages to all mobiles currently using the site are transmitted If it has assigned mobiles this includes messages to those mobiles For example assume that five different trans ceivers are making calls I...

Page 101: ...que ID code to respond to a Special Call Refer to Section 3 7 4 for more informa tion on special calls 5 8 OTHER MULTI NET FEATURES 5 8 1 UNIQUE ID CODES Each selectable system of a transceiver is programmed with a unique ID code in addition to the group ID codes Unique ID codes are assigned on a site wide basis not on a repeater basis as with group IDs Up to 8000 unique ID codes can be assigned p...

Page 102: ... only one that can be reprogrammed over the air and also by the PC programmer Making only one group reprogrammable in this manner prevents the transceiver from becoming inoperative because of a programming error caused by a poor RF signal Dynamic reprogramming is performed by the system manager The data transmitted to the mobile includes the selectable system to be changed the new encode and decod...

Page 103: ...he transceiver is searching for a new site the user is alerted by a message in the display Refer to Section 3 7 2 for more information Most Multi Net transceivers also have a program mable parameter called Auto Registration Dropout Criteria This parameter determines the point at which the mobile attempts to register on another site This is controlled by the percentage of good data messages that th...

Page 104: ...ive a call Encryption is available on both group and telephone calls either mobile and landside originated With telephone calls dialing is normally completed before encryption is enabled Encryption can be used with Multi Net LTR and conventional operation Each group can be programmed for encryption and then when that group is selected encryption is automatically enabled The user can also manually ...

Page 105: ...MULTI NET SYSTEM OVERVIEW 5 10 Revised February 1997 Part No 001 9750 005 ...

Page 106: ...e stability of A800 is 1 5 PPM for both 800 and 900 MHz from 22 to 140 F 30 to 60 C 6 1 3 RECEIVER The receiver is a double conversion type with intermediate frequencies of 52 950 MHz and 450 kHz Receiver selectivity is enhanced by two 52 950 MHz crystal filters and a 450 kHz ceramic filter Two band pass filters in the front end attenuate the image half IF injection and other frequencies which cou...

Page 107: ...r It oscillates on the transmit frequency in the transmit mode and 52 950 MHz below the receive frequency in the receive mode Therefore its operating band is approximately 798 869 MHz 800 MHz models or 882 941 MHz 900 MHz models Transistor bias is provided by R920 and R921 and stabilization is provided by R922 L921 is an RF choke and C926 is a bypass capacitor C922 C923 and R924 provide feedback t...

Page 108: ...CIRCUIT DESCRIPTION 6 3 August 1993 Part No 001 9750 001 Figure 6 1 Transceiver Block Diagram ...

Page 109: ...apacitive leg is formed by C905 PIN diode CR905 and C906 When the Q6 output of U802 is a high level and the Q7 output is a low level CR905 is forward biased and C905 and C906 are effectively connected to the tank circuit This decreases the reso nant frequency of the tank circuit L905 L906 and C907 C908 provide isolation The inductive leg is formed by C909 a section of microstrip which provides ser...

Page 110: ...er and CR802 provides a low imped ance path through C814 to the transmitter In the receive mode the Q4 and Q3 outputs of U802 are the opposite states so both diodes are reverse biased The quarter wave line is then no longer grounded and provides a low impedance path to the receiver and CR902 presents a high impedance into the transmitter L800 C841 and L803 C813 neutralize the slight capacitance of...

Page 111: ...28 or 129 This divide number is controlled by the N and A counters as follows Both the N and A counters begin counting down from the number that they were programmed with When the A counter reaches zero it halts until the N counter reaches zero Both counters then reset and the cycle is repeated The A counter is always programmed with a smaller number than the N counter While the A counter is count...

Page 112: ... filter formed by C805 C807 R806 R845 and C836 provides low pass filtering of the signal from the charge pump This filtering controls synthesizer stability and lock up time and suppresses the reference frequency 12 5 kHz 6 2 9 VOLTAGE MULTIPLIER CR804A B CR805A B The voltage multiplier circuit provides a supply voltage of approximately 25 volts to the charge pump circuit This supply voltage is req...

Page 113: ... by Q202 similar to Q291 described in Section 6 3 1 The output of the IF amplifier is applied to a 6 dB pad and then to crystal filter Z206 This is a two pole filter with a bandwidth of 18 kHz 800 MHz or 10 kHz 900 MHz at the 3 dB points 6 3 4 SECOND MIXER DETECTOR U200 U200 contains second mixer and oscillator limiter detector audio preamplifier squelch and RSSI stages The second injection signal...

Page 114: ...ses less than 1 6 volt P P that are present in the 13 8 volt supply from the vehicle This lessens the amount of vehicle noise in circuits powered by the 13 8 volt supply such as audio amplifier U100 6 4 TRANSMITTER CIRCUIT DESCRIPTION NOTE RF amplifier Q290 is described in Section 6 3 1 6 4 1 POWER AMPLIFIER MODULE U500 The RF input signal to the transmitter on J501 pin 18 is at a level of approxi...

Page 115: ... a fixed power output a D A converter is used so that it can be controlled by the microprocessor Each selectable system can be programmed for a different power level There are five power levels that can be programmed using the test mode see Section 3 11 Power output is controlled by varying the supply voltage to one of the amplifier stages in power amplifier module U500 The micro processor also mo...

Page 116: ...igh level on the MODA and MODB pins This mode allows external memory and peripheral devices to be accessed by a multiplexed address data bus Multiplexing allows the eight pins of the data bus AD0 AD7 to be used for memory addressing as well as data input and output For more information see Address Data Bus description which follows The operating speed of the microprocessor is set by crystal Y300 T...

Page 117: ...rter circuitry R403 and C402 attenuate noise present in the 5 volt supply applied to VREFH PE0 Analog DC voltage of 0 5 volts from thermistor RT500 on the PA board 30 35 watt models only This voltage decreases as power amplifier tempera ture increases PE1 Analog DC voltage of 0 5 volts from the direc tional coupler on the PA board that increases with the reflected power This and the PE2 input are ...

Page 118: ...ave the role of these pins is reversed PD4 SCK This pin is the serial clock output in the master configuration and the serial clock input from the digital signal processor circuit in the slave configu ration PD5 SS In the slave configuration this is the slave select input and the master forces it low when it is ready to transfer data In the master configuration it can be used as a general purpose ...

Page 119: ...to the filter The low level on the control input of gate U608C causes that gate to block the signal from J403 pin 2 If the RX LOOP signal is high the opposite occurs R644 R645 and C639 are used to minimize the click heard when the gate opens and closes R625 and C638 attenuate noise present in the logic signal Diode CR601 closes both U608A and U608C when ever mute gate U608B is closed This improves...

Page 120: ...s on the PA3 and PA4 pins This channel of U600 is normally not used with front mount transceivers and is programmed for maximum attenuation because the PE4 input is pulled low by R785 An exception may be when a remote control unit is used with a front mount transceiver to provide dual controls The volume controls of both units can then operate in parallel so that the volume is the sum of both cont...

Page 121: ...ront mount transceivers is coupled by C661 to summing amplifier U603D R655 R656 and C660 provide a bias supply to the microphone If the remote control unit is used a 600 ohm balanced line is used to apply the audio signal to differential amplifier U603A Using a balanced line minimizes the affect of common mode noise signals picked up by the cable to the control unit R660 R661 provide a 600 ohm inp...

Page 122: ...es the sum of the transmit audio transmit data and wideband data signals The audio and data modulation levels are adjusted by R701 and R703 A 2 5 volt bias voltage is providedbyR708and R709 The outputof the summing amplifier is fed to the synthesizer on the RF board The wideband data input from J403 pin 8 of the universal interface allows data to be injected after the limiter circuit If DC couplin...

Page 123: ...CIRCUIT DESCRIPTION 6 18 August 1993 Part No 001 9750 001 ...

Page 124: ...er ated like a standard dispatch transceiver The test mode is especially useful when the transceiver is programmed for LTR operation because the logic inhibits operation until a handshake is completed with a repeater 7 1 5 SURFACE MOUNTED COMPONENTS Surface mounted components are used exten sively in this transceiver Because of the small size of these components and PC board traces on which they a...

Page 125: ...encies to check the divide number Proceed as follows to check the input and output signals of the synthesizer to determine if it is operating properly 7 2 2 TCXO Y800 Check the signal at pin 5 of TCXO temperature compensated crystal oscillator Y800 It should be 17 500 MHz at a level of approximately 1 5 V P P If this signal is not present replace the TCXO because it is not serviceable 7 2 3 VCO MO...

Page 126: ... number N Counter To check the operation of the N counter the input and output frequencies can be measured to check the divide number The divide number for the channel you have selected is calculated as described in Section 7 2 5 The input and output frequencies can be measured as follows For example the N counter divide number for 800 MHz channel 300 transmit is 508 If the VCO is locked on freque...

Page 127: ...ircuit may be defective If the phase detector and charge pump are operating properly check the lock detector and prescaler as described in the following information When the VCO is locked on frequency the following waveforms should be observed at the points indicated all pulses should occur simultaneously Lock Detector When the VCO is locked on frequency the waveform at U801 pin 7 should be as fol...

Page 128: ... under standing of the operating software may be needed to isolate a problem Therefore if a problem is suspected with the digital circuitry verify that the 5 volt and 8 volt supply voltages are correct and then replace the audio logic board 7 5 2 ANALOG CIRCUITS The analog circuits on the audio logic board can be checked by measuring the AC and DC voltages shown on Part 2 of the audio logic board ...

Page 129: ...identified with the Japanese stan dard by E1 The Japanese standard may also utilize a bar to indicate the temperature coefficient The following coefficients are indicated by this bar For example A2 indicates a 100 pF NPO capacitor XX NPO XX N150 XX N220 XX N330 XX N470 XX N750 XX X7R Tantalum SMD Capacitors P N 510 26xx xxx Tantalum SMD capacitor identification varies with vendor and physical size...

Page 130: ...ple brown black and red dots indicate a value of 10 nH x 100 which is 1000 nH 1 0 µH The last three digits of the part number are also the value and multiplier 7 6 5 TRANSISTOR DIODE IDENTIFICATION Surface mounted transistors and diodes are identi fied by a special number Refer to page 10 1 for more information Table 7 2 SMD Inductor Identification Color 1st Digit 2nd Digit Multiplier Last PN Digi...

Page 131: ...SERVICING 7 8 Revised January 1995 Part No 001 9750 003 ...

Page 132: ...er audio ampli fier output even momentarily will seriously damage the device Momentarily grounding an output should not result in damage Two test cables are required to perform trans ceiver alignment One cable connects to the accessory pigtail and the other connects to the microphone jack These cables are shown in Figure 8 1 For transceiver power to turn on the ignition sense input of the accessor...

Page 133: ...e adjustments NOTE A tuning tool with a 0 030 square tip JCM 4193 is required to adjust C511 in the next step This tool is available from the Service Parts Dept by ordering P N 721 0015 171 c Key the transmitter and adjust C511 for maximum power output d Rotate the Select switch until the display indicates Ch 918 TA 869 9625 or Ch 473 TA 940 9125 to select the talk around mode Key the transmitter ...

Page 134: ...tts or other lev els from 1 2 W if desired Unkey the transmitter to store the setting 8 3 4 MODULATION BALANCE This adjustment sets modulation balance across the standard and talk around frequency bands a Press and rotate the Select switch to select the BAL ADJUST function of the test mode see Section 3 11 6 Press the Select switch to display BAL ADJ 1 b Key the transmitter and view the demodulate...

Page 135: ...00 MHz Models g Set the generator modulation for 1 kHz at 1 5 kHz deviation Tune Z204 on the RF board for maximum audio output h Connect an oscilloscope or RF voltmeter that is capable of responding to 53 MHz signals to the IF test point which is the Q203 collector wire out see Figure 8 4 i Tune L202 L205 and L209 for a maximum IF level Repeat if necessary Remove the oscilloscope or voltmeter j Tu...

Page 136: ...crease the output until the receiver squelches This should occur by 5 dB 2 dB If not repeat the preceding step 8 4 4 LOCAL TONE LEVEL ADJUST R643 adjusts the level of the tone which indi cates such things as when a key is pressed To enable this tone press a front panel key or turn the Select switch Adjust R643 for the desired tone level approximately midrange Figure 8 4 Alignment Point Diagrams ...

Page 137: ... number of connectors with a teflon or better dielectric If coaxial cable is used it should be a minimum length of a low loss type a Connect the test cables shown in Figure 8 1 to the microphone and accessory jacks Connect the test setup shown in Figure 8 2 b Select the test mode RX TX RSSI function as described in Section 8 1 1 Press and turn the Select switch to select Ch 381 860 5125 or Ch 240 ...

Page 138: ...d 510 2625 100 C 200 100 pF 5 NPO 50V cer smd 510 3601 101 C 201 33 pF 5 NPO cer smd 510 3601 330 C 202 33 pF 5 NPO cer smd 510 3601 330 C 204 100 pF 5 NPO 50V cer smd 510 3601 101 C 205 39 pF 5 NPO 50V cer smd 510 3601 390 C 206 1 0 µF 16V tantalum smd 510 2625 109 C 207 39 pF 5 NPO cer smd 510 3601 390 C 208 6 8 pF 5 NPO 50V cer smd 510 3601 689 900 MHz only C 210 01 µF X7R 10 50V cer smd 510 36...

Page 139: ...V cer smd 510 3607 104 800 MHz 001 µF 5 NPO 50V cer smd 510 3602 102 900 MHz Ref No Description Part No C 505 39 pF 5 NPO 50V cer smd 510 3615 390 C506 12 pF hi q cer smd 510 3663 120 30 35W models only C 507 12 pF hi q cer smd 510 3663 120 30 35W models only C 508 20 pF 250V mini mica 510 0020 200 800 MHz 35W models 15 pF 250V mini mica 510 0020 150 900 MHz 30W models C 509 18 pF 250V mini mica 5...

Page 140: ... 35W C 548 39 pF 5 NPO 50V cer smd 510 3615 390 C 549 3 9 pF 5 NPO 50V cer smd 510 3615 399 800 MHz 3 3 pF 5 NPO 50V cer smd 510 3615 339 900 MHz Ref No Description Part No C 550 01 µF X7R 10 50V cer smd 510 3605 103 C 551 2200 µF 25V electrolytic 510 4064 222 C 552 01 µF X7R 10 50V cer smd 510 3605 103 C 553 047 µF 5 100V polyester 510 1031 473 900 MHz 15W only C 554 4 7 µF 20V tantalum smd 510 2...

Page 141: ...9 C 824 1 0 µF 35V tantalum smd 510 2628 109 C 826 2 2 pF 5 NPO 50V cer smd 510 3601 229 C 827 001 µF 5 NPO cer smd 510 3601 102 Ref No Description Part No C 828 001 µF 5 NPO cer smd 510 3601 102 C 829 001 µF 5 NPO cer smd 510 3601 102 C 831 01 µF X7R 10 50V cer smd 510 3605 103 C 832 27 pF 5 NPO cer smd 510 3601 270 C 834 22 µF 10 X7R 50V cer smd 510 3607 224 C 836 001 µF 5 NPO cer smd 510 3601 1...

Page 142: ...nductor 542 0016 008 All except the following 4T 22 AWG smd inductor 542 0015 004 900 MHz 15W L 503 8T 22 AWG smd inductor 542 0016 008 800 MHz 35W Ref No Description Part No 6T 22 AWG smd inductor 542 0015 006 900 MHz 30W L 504 4T 22 AWG smd inductor 542 0015 004 800 MHz 35W 2T 22 AWG smd inductor 542 0015 002 900 MHz 30W L 506 6T 22 AWG smd inductor 542 0015 006 800 MHz 15W 8T 22 AWG smd inducto...

Page 143: ...06 PNP low noise RF amp 576 0003 608 Ref No Description Part No Q 807 NPN low noise amp 576 0001 300 Q 808 PNP low noise amp 576 0003 650 Q 809 PNP low noise amp 576 0003 650 R 100 100k ohm 5 1 8W smd 569 0105 104 R 101 10k ohm 5 1 8W smd 569 0105 103 R 102 1 0k ohm 5 1 8W smd 569 0105 102 R 103 220 ohm 5 1 8W smd 569 0105 221 R 104 27k ohm 5 1 8W smd 569 0105 273 R 105 220 ohm 5 1 8W smd 569 0105...

Page 144: ... 1 8W smd 569 0105 103 R 519 100k ohm 5 1 8W smd 569 0105 104 R 521 10k ohm 5 1 8W smd 569 0105 103 Ref No Description Part No R 522 1 0k ohm 5 1 8W smd 569 0105 102 R 525 1 0k ohm 5 1 8W smd 569 0105 102 R 526 20k ohm 5 1 8W smd 569 0105 203 R 527 100k ohm 5 1 8W smd 569 0105 104 R 528 470 ohm 5 1 8W smd 569 0105 471 R 531 10k ohm 5 1 8W smd 569 0105 103 R 534 10k ohm 5 1 8W smd 569 0105 103 R 53...

Page 145: ... 8W smd 569 0105 472 R 811 150 ohm 5 1 8W smd 569 0105 151 Ref No Description Part No R 812 1 0k ohm 5 1 8W smd 569 0105 102 R 813 1 0k ohm 5 1 8W smd 569 0105 102 R 814 100 ohm 5 1 8W smd 569 0105 101 R 815 33k ohm 5 1 8W smd 569 0105 333 R 819 1 0k ohm 5 1 8W smd 569 0105 102 800 MHz 220 ohm 5 1 8W smd 569 0105 221 900 MHz R 820 820 ohm 5 1 8W smd 569 0105 821 800 MHz 910 ohm 5 1 8W smd 569 0105...

Page 146: ... MHz Z 204 455 kHz variable inductor w cap 542 1012 010 Z 205 52 95 MHz 15 kHz bw 4P filter 532 0009 009 800 MHz Ref No Description Part No 52 95 MHz 8 kHz bw 4P filter 532 0009 011 900 MHz Z 206 52 95 MHz 18 kHz bw 2P filter 532 0009 010 800 MHz 52 95 MHz 10 kHz bw 2P filter 532 0009 012 900 MHz Z 290 860 MHz 20 MHz bw 3P filter 532 2007 011 800 MHz 938 MHz 6 MHz bw 2P filter 532 2006 015 900 MHz...

Page 147: ... 647 1 0 µF 16V tantalum smd 510 2625 109 C 648 0068 µF X7R 50V cer smd 510 3605 682 Ref No Description Part No C 650 01 µF X7R 10 50V cer smd 510 3605 103 C 651 047 µF 10 X7R 50V cer smd 510 3606 473 C 652 4 7 µF 10V tantalum smd 510 2624 479 C 653 047 µF 10 X7R 50V cer smd 510 3606 473 C 660 4 7 µF 20V tantalum smd 510 2626 479 C 661 047 µF 10 X7R 50V cer smd 510 3606 473 C 662 047 µF 10 X7R 50V...

Page 148: ...15 7111 230 J 400 5 pin connector 515 7111 254 J 401 30 pin zif connector 515 7111 283 J 402 13 pin connector 515 7111 262 J 403 13 pin connector 515 7111 262 Ref No Description Part No J 404 12 pin connector 515 7111 261 J 405 6 pin connector 515 7111 255 PC 313 PC board audio logic 035 9750 320 Q 300 NPN amplifier SOT 23 576 0003 616 Q 400 PNP digital w res SOT 23 576 0003 621 Q 401 NPN amplifie...

Page 149: ...md 569 0105 113 R 442 11k ohm 5 1 8W smd 569 0105 113 R 444 100k ohm 5 1 8W smd 569 0105 104 Ref No Description Part No R 445 11k ohm 5 1 8W smd 569 0105 113 R 446 11k ohm 5 1 8W smd 569 0105 113 R 447 11k ohm 5 1 8W smd 569 0105 113 R 448 11k ohm 5 1 8W smd 569 0105 113 R 449 100k ohm 5 1 8W smd 569 0105 104 R 450 22k ohm 5 1 8W smd 569 0105 223 R 451 22k ohm 5 1 8W smd 569 0105 223 R 452 11k ohm...

Page 150: ...69 0105 474 R 647 11k ohm 5 1 8W smd 569 0105 113 R 648 100k ohm 5 1 8W smd 569 0105 104 Ref No Description Part No R 650 47k ohm 5 1 8W smd 569 0105 473 R 655 620 ohm 5 1 8W smd 569 0105 621 R 656 620 ohm 5 1 8W smd 569 0105 621 R 657 150k ohm 5 1 8W smd 569 0105 154 R 658 470k ohm 5 1 8W smd 569 0105 474 R 659 620k ohm 5 1 8W smd 569 0105 624 R 660 620 ohm 5 1 8W smd 569 0105 621 R 661 620 ohm 5...

Page 151: ... 738 47k ohm 5 1 8W smd 569 0105 473 R 739 47k ohm 5 1 8W smd 569 0105 473 Ref No Description Part No R 740 330k ohm 5 1 8W smd 569 0105 334 R 745 15k ohm 5 1 8W smd 569 0105 153 R 746 1 0k ohm 5 1 8W smd 569 0105 102 R 747 270k ohm 5 1 8W smd 569 0105 274 R 748 10k ohm smd trimmer 562 0130 103 R 749 Zero ohm 5 1 8W smd 569 0105 001 R 751 180k ohm 5 1 8W smd 569 0105 184 R 752 68k ohm 5 1 8W smd 5...

Page 152: ...p amp quad 224 544 2020 014 U 607 Op amp quad 224 544 2020 014 U 608 Analog switch quad 4066 544 3016 066 U 609 Analog switch quad 4066 544 3016 066 U 610 Analog switch quad 4066 544 3016 066 X 401 Socket 32 pin 515 5020 002 Y 300 8 0 MHz crystal 521 0008 001 Ref No Description Part No Ref No Description Part No FRONT PANEL ASSEMBLY Both Front and Remote Models A 151 Front panel assembly black 587...

Page 153: ... 569 0105 274 R 107 2 2k ohm 5 1 8W smd 569 0105 222 R 108 33k ohm 5 1 8W smd 569 0105 683 Ref No Description Part No R 109 68k ohm 5 1 8W smd 569 0105 683 R 110 68k ohm 5 1 8W smd 569 0105 683 R 111 390 ohm 5 1 8W smd 569 0105 391 R 112 6 8k ohm 5 1 8W smd 569 0105 682 R 113 5 1k ohm 5 1 8W smd 569 0105 512 R 114 1 5k ohm 5 1 8W smd 569 0105 682 R 115 1 5k ohm 5 1 8W smd 569 0105 682 R 116 1 5k o...

Page 154: ...ntalum smd 510 2624 479 C 301 047 µF 10 X7R 50V cer smd 510 3606 473 C 302 4 7 µF 10V tantalum smd 510 2624 479 C 303 015 µF 10 X7R 50V cer smd 510 3606 153 C 304 4 7 µF 10V tantalum smd 510 2624 479 C 305 015 µF 10 X7R 50V cer smd 510 3606 153 F 200 Fuse 0 6A smd 534 5001 002 HW 001 Screw self drill 10 575 9077 545 HW 002 Screw captive 75 575 9606 018 HW 005 Polyethylene washer 937 596 6400 015 H...

Page 155: ...9 10k ohm 5 1 8W smd 569 0105 103 R 162 10k ohm 5 1 8W smd 569 0105 103 R 163 10k ohm 5 1 8W smd 569 0105 103 Ref No Description Part No R 164 150 ohm 5 1 8W smd 569 0105 151 R 200 Jumper 569 0105 001 R 201 Jumper 569 0105 001 R 202 Jumper 569 0105 001 R 203 Jumper 569 0105 001 R 204 39 ohm 5 1 8W smd 569 0115 390 R 205 1 ohm 10 cer smd 569 0115 109 R 206 2 7 ohm 5 1 8W smd 569 0115 279 R 207 6 8k...

Page 156: ...9 19 Revised December 2000 Part No 001 9750 007 TRANSCEIVER EXPLODED VIEW PART 1 ...

Page 157: ...Revised January 1995 Part No 001 9750 003 9 20 TRANSCEIVER EXPLODED VIEW PART 2 Remote Control Parts ...

Page 158: ...003 603 576 0003 608 3 7F 576 0003 612 1 2T 576 0003 616 1 576 0003 618 1 10 576 0003 621 4 576 0003 626 1 576 0003 634 5 3B 576 0003 650 1 576 0003 657 1 2A 576 0003 658 1 1A 576 0004 805 6 576 0004 817 6 576 0004 818 6 576 0004 901 6 576 0006 114 7 DIODES 523 1504 001 4D 523 1504 002 5A 523 1504 012 A2 523 1504 016 5F 523 1504 017 5D 523 1504 022 5B 523 1504 023 A7 523 1504 024 A1 523 1504 032 N...

Page 159: ...032 0427 100 MP003 Actuator black 032 0428 050 MP004 Cartridge gasket 032 0429 075 MP005 Blast filter 018 1033 002 MP006 Switch bracket 017 1885 030 MP007 Hanger button 013 1216 005 MP008 Crimp retainer 017 2222 006 MP009 Rubber bumper 018 0798 009 MP010 Backing plate 015 0876 026 MP011 Strain relief mic cord 032 0429 086 MP012 Shim support rubber bumper 017 2222 007 MP020 Foam support 018 0798 01...

Page 160: ...C 4 3 2 1 J6 U1 MC78M05 SERIAL PORT RS 232 TTL CONVERTER TO TRANSCEIVER TO TRANSCEIVER J5 RXD GND MIC AUDIO OUT HANGER 20V PROG BATTERY RX AUDIO IN 6 5 4 3 2 1 B TxD A Q3 6026 Q2 3657 CR9 R15 62 CR10 R14 100k R18 1k C17 22k VCC R27 1k C7 01 DC DC CONVERTER U2 MC33063 SC VCC SE 1 2 6 7 IS 5 3 CI TC DC GND C9 001 CURRENT LIMITER CR8 Q1 3658 C6 1 R24 22k R2 22k SOURCE VCC 2 3 1 OUT GND IN C10 10 C4 1...

Page 161: ...C C7 R16 R18 U1 C10 C18 C11 C5 C16 J6 1 2 3 4 CR7 J1 J8 J2 1 6 C14 U4 9 8 1 16 C17 C15 R20 R21 R22 R11 R6 R5 R4 U2 CR5 L1 R10 R9 DS1 1 7 S1 3 1 8 5 4 8 1 C12 R7 J5 7A 2 4 6 8B 5 3 1 U3 R19 C13 Q1 C8 R2 R24 R1 J3 J7 1 CR1 CR4 CR3 CR2 9 5 R13 CR6 CR8 C B E 1 4 R25 C9 R8 R15 R14 R26 CR9 C6 C3 R23 C4 R27 5 8 R12 RPI PART NO 023 9800 000 BOARD LAYOUT ...

Page 162: ...A5 RF C 256 B6 RF C 257 B6 RF C 258 B6 RF C 259 B6 RF C 260 A5 RF C 291 B4 PA C 292 B4 PA C 293 B5 PA C 294 B5 PA C 296 A4 PA C 297 A5 PA C 298 B5 PA C 500 D6 PA C 501 C6 PA C 502 D6 PA C 504 B6 PA C 505 D2 PA C 506 D4 PA C 507 C4 PA Com Loc Board C 508 D4 PA C 509 C4 PA C 510 B6 PA C 511 C5 PA C 512 C7 PA C 513 A5 PA C 514 A1 PA C 515 C2 PA C 516 C2 PA C 517 C4 PA C 518 C4 PA C 519 D3 PA C 520 C7...

Page 163: ...A MP506 C4 PA P 100 B3 RF P 101 C3 RF Q 100 C1 RF Q 101 C1 RF Q 102 B1 RF Q 103 C1 RF Q 104 C1 RF Q 106 C1 RF Q 107 C1 RF Com Loc Board Q 108 C1 RF Q 200 B6 RF Q 202 B6 RF Q 203 B6 RF Q 205 C6 RF Q 290 A5 PA Q 291 B5 PA Q 500 D3 PA Q 501 C4 PA Q 502 B5 PA Q 503 B3 PA Q 504 B5 PA Q 506 B5 PA Q 507 B5 PA Q 510 B6 PA Q 511 B4 PA Q 514 B5 PA Q 800 B1 RF Q 801 B3 RF Q 802 B3 RF Q 804 B3 RF Q 805 B4 RF ...

Page 164: ...590 C5 PA R 591 B6 PA R 800 B1 RF R 801 B1 RF R 802 B2 RF R 803 B2 RF R 805 B2 RF R 806 B1 RF R 807 A3 RF R 808 B3 RF Com Loc Board R 809 B3 RF R 810 B3 RF R 811 C3 RF R 812 C3 RF R 813 C4 RF R 814 A4 RF R 815 B3 RF R 819 B3 RF R 820 B3 RF R 821 B4 RF R 822 B4 RF R 823 B4 RF R 824 B3 RF R 826 B3 RF R 827 B3 RF R 828 B3 RF R 829 C3 RF R 830 C4 RF R 831 C4 RF R 832 C4 RF R 833 C4 RF R 834 B4 RF R 83...

Page 165: ...8 D7 BOT C 650 B7 TOP C 651 D7 TOP C 652 E6 TOP C 653 C8 TOP C 660 B4 TOP C 661 A4 TOP C 662 B4 BOT C 663 B4 TOP C 664 A4 BOT C 665 A6 BOT C 666 B6 BOT C 667 B5 BOT C 668 A5 TOP Comp Loc Top Bot C 669 B5 BOT C 670 A5 TOP C 671 A5 BOT C 672 A5 TOP C 673 A5 BOT C 674 A5 BOT C 675 A5 BOT C 676 A5 TOP C 677 A5 BOT C 678 A6 TOP C 679 B6 TOP C 680 B6 BOT C 681 A6 TOP C 682 B5 BOT C 683 A6 BOT C 684 A4 B...

Page 166: ... 438 E3 TOP R 439 E4 TOP R 440 E4 BOT R 441 E4 BOT R 442 E3 TOP R 44 i D7 TOP R 4 15 E2 TOP R 446 E5 TOP Comp Loc Top Bot R 447 B2 BOT R 448 B3 BOT R 449 E5 TOP R 450 D6 BOT R 451 D6 BOT R 452 D6 BOT R 453 D6 BOT R 454 D6 BOT R 455 D6 BOT R 456 D6 BOT R 457 D6 BOT R 458 D6 BOT R 459 D6 BOT R 460 E6 BOT R 461 D5 BOT R 462 E6 BOT R 463 E4 BOT R 464 E4 BOT R 465 E4 BOT R 466 E4 BOT R 467 E4 BOT R 468...

Page 167: ... B5 TOP R 749 B5 TOP R 751 B5 TOP R 752 B5 TOP R 753 B6 TOP R 754 B5 TOP R 755 B5 TOP R 756 B5 BOT R 757 C7 TOP Comp Loc Top Bot R 758 C7 TOP R 759 C7 BOT R 760 C7 BOT R 761 C8 BOT R 762 C8 BOT R 763 C7 BOT R 764 C8 BOT R 765 B5 TOP R 766 C6 TOP R 767 B7 TOP R 768 B7 TOP R 770 A6 TOP R 771 A6 BOT R 772 A7 B07 R 773 A7 BOT R 774 A6 BOT R 775 A7 B07 R 776 A6 TOP R 777 A6 TOP R 778 A7 BOT R 779 A7 BO...

Page 168: ...Revised January 1995 Part No 001 9750 003 10 11 INTERCONNECT SCHEMATIC ...

Page 169: ...Revised January 1995 Part No 001 9750 003 10 12 DISPLAY BOARD SCHEMATIC ...

Page 170: ...Revised January 1995 Part No 001 9750 003 10 13 DISPLAY BOARD TOP VIEW DISPLAY BOARD BOTTOM VIEW ...

Page 171: ...Revised January 1995 Part No 001 9750 003 10 14 RF BOARD SCHEMATIC REVISED 800 MHZ ...

Page 172: ...Revised January 1995 Part No 001 9750 003 10 15 RF BOARD BOARD LAYOUT ALL 800 900 MHZ ...

Page 173: ...Revised January 1995 Part No 001 9750 003 10 16 RF BOARD BOARD SCHEMATIC 900 MHZ ...

Page 174: ...Revised January 1995 Part No 001 9750 003 10 17 RF BOARD BOARD SCHEMATIC UNREVISED 800 MHZ ...

Page 175: ... R589 10k 8V 11 13 12 14 8 10 9 4 R536 330 CR504 R540 1k CR505 C571 39pF R541 1k C552 0 01 C570 39pF R539 330 C569 56pF CR506 L510 C561 39pF R538 100 C544 1 2pF R537 100 C534 1 2pF C549 3 9pF C502 2 7pF C500 2 7pF C567 3 9pF R527 100k C568 56pF Q514 3612 R501 10k 8V L506 Q507 1300 R564 10k CR507 C528 39pF L508 C527 0 01 R514 100 C529 39pF C531 5 6pF C510 2 7pF CR502 L507 C586 39pF R528 470 C533 0 ...

Page 176: ... R566 10k Q510 3612 C545 0 01 R591 10k BATT R503 10k Q504 1300 R517 10k R589 10k 8V 11 13 12 14 8 10 9 4 R536 330 CR504 R540 1k CR505 C571 39pF R541 1k C552 0 01 C570 39pF R539 330 C569 39pF CR506 L510 C561 39pF R538 100 C544 1 2pF R537 100 C534 1 2pF C549 3 9pF C502 2 7pF C500 2 7pF C567 3 9pF R527 100k C568 39pF Q514 3612 R501 10k 8V L506 Q507 1300 R564 10k CR507 C528 39pF L508 C527 0 01 R514 10...

Page 177: ...R507 R508 R506 R522 R555 R547 R548 R526 R592 C565 R560 R558 U503 Q503 R559 R546 R551 C290 R543 R544 R545 R553 R552 R554 C596 C584 C292 C291 R295 Q506 Q511 RT501 R577 R576 R565 R531 Q507 R528 R297 Q291 RT502 CR290 R290 C294 R291 R294 C298 R501 C293 R575 Q514 R564 C586 C150 L507 CR502 CR509 C533 R514 C529 CR507 C532 Z290 C297 Q290 C296 F500 C514 C551 CR503 J501 C519 C E B E C B C B C B E C B E 1 7 8...

Page 178: ...Revised January 1995 Part No 001 9750 003 10 21 PA BOARD SCHEMATIC 900 MHZ 30W ...

Page 179: ...Revised January 1995 Part No 001 9750 003 10 22 PA BOARD SCHEMATIC 900 MHZ 15W ...

Page 180: ...Revised January 1995 Part No 001 9750 003 10 23 PA BOARD BOARD LAYOUT 900 MHZ UNREVISED 800 MHZ 15W 30W 35W 15W MODELS ...

Page 181: ...Revised January 1995 Part No 001 9750 003 10 24 PA BOARD SCHEMATIC UNREVISED 800 MHZ 35W ...

Page 182: ...Revised January 1995 Part No 001 9750 003 10 25 PA BOARD SCHEMATIC UNREVISED 800 MHZ 15W ...

Page 183: ...Revised January 1995 Part No 001 9750 003 10 26 AUDIO LOGIC BOARD SCHEMATIC PART 1 OF 2 ...

Page 184: ...Revised January 1995 Part No 001 9750 003 10 27 AUDIO LOGIC BOARD SCHEMATIC PART 2 OF 2 ...

Page 185: ...Revised January 1995 Part No 001 9750 003 10 28 AUDIO LOGIC BOARD LAYOUT TOP VIEW ...

Page 186: ...Revised January 1995 Part No 001 9750 003 10 29 AUDIO LOGIC BOARD LAYOUT BOTTOM VIEW ...

Page 187: ... 15k C107 220pF C105 1 C101 4 7 U101A 2904 R102 2 2k R101 220k R100 100k Part of J100 SOURCE 8V Rx Audio Out Rx Audio Out Rx Audio Out Rx Audio In 11 12 10 VREF 2 3 1 2 3 1 Rect In AG In Rect Cap U100A SA5710 EXPANDER BYPASS GATE R114 1 5k R115 1 5k 8 6 9 8V 3 5 4 R116 1 5k R117 1 3k 11 16 9 12 14 15 10 COMPRESSOR U100B SA5710 Res R1 Rect Cap Thd Trm Output Rect In AG In Inv In Audio Out VREF 1 13...

Page 188: ...Revised January 1995 Part No 001 9750 003 10 31 REMOTE TRANSCEIVER INTERCONNECT SCHEMATIC ...

Page 189: ...Revised January 1995 Part No 001 9750 003 10 32 REMOTE CONTROL UNIT INTERFACE BOARD SCHEMATIC ...

Page 190: ...10 33 Revised January 1995 Part No 001 9750 003 REMOTE CONTROL UNIT INTERFACE BOARD TOP VIEW REMOTE CONTROL UNIT INTERFACE BOARD BOTTOM VIEW ...

Page 191: ...se models have an updated PA board that eliminated the need to lift the lead of U500 pin 1 before flash programming see Sec tion 4 7 C all except 9755 D 9755 These models have Version 204 software that supports the horn alert fea ture for interconnect and Multi Net unique ID calls see Table A 1 E all models These models have the Version 206 software described in Table A 1 In addition they have a s...

Page 192: ...minor problems 209 7 95 Fixed several minor problems 210 9 95 Added UD2I validation indication and fixed minor problems 211 212 These revision numbers were skipped 213 4 96 Added horn alert modes and fixed minor problems 214 12 96 Added UD2I support for the Status Message Unit SMU changed Mode A horn alert operation and fixed several minor problems Revision letter to G When transceivers with revis...

Page 193: ...ction 3 6 12 for more informa tion on encryption operation Version 204 Software Version 204 of the programming software was released in early 1996 The only change to this soft ware is an additional question on the Main Radio Parameters screen to select the horn alert mode Refer to Section 3 6 4 for more information on horn alert operation Version 205 Software Version 205 of the programming softwar...

Page 194: ...iguration is always selected A 7 2 GROUP PROCEED TONE DELAY A proceed tone delay time programmable on each system and selectable on a per group basis was added with the release of Version 222 transceiver software in September 2000 Programming software Version 206 or later is required to program this feature Refer to Section 3 6 3 for more information Table A 2 Summit DM Part Changes Through Januar...

Page 195: ...smd J401 pin 9 569 0105 102 Added R 602 4 7k ohm 5 1 8W smd 569 0105 472 576 0105 512 Changed R 606 4 7k ohm 5 1 8W smd 569 0105 472 569 0105 103 Changed R 643 220k ohm smd trimmer 562 0138 224 562 0130 224 Changed R 694 390 ohm 5 1 8W smd 569 0105 391 569 0105 681 Changed R 701 470k ohm smd trimmer 562 0138 474 562 0130 474 Changed R 703 220k ohm smd trimmer 562 0138 224 562 0130 224 Changed R 74...

Page 196: ...early 1995 a running change was made to 2 pole crystal filter Z206 in the receiver of 800 MHz models This filter is being deleted in all 800 MHz Summit DM transceivers it continues to be used in all 900 MHz models No degradation in performance results at 800 MHz when this filter is deleted The following parts are changed when this filter is not used C 229 5 6 pF 5 50V cer smd 510 3601 569 510 3601...

Page 197: ...ic 10 pF should be 22 pF C 506 12 pF 10 50V hi Q smd 510 3663 120 510 3614 120 Changed type 800 MHz 35W only C 507 12 pF 10 50V hi Q smd 510 3663 120 510 3614 120 Changed type 800 MHz 35W only C 511 Variable capacitor 187 0103 175 512 1008 001 Changed 800 MHz 35W only C 547 39 pF 5 NPO 50V cer smd 510 3615 390 Deleted 800 MHz 35W only C 568 56 pF 10 50V high Q smd 510 3663 560 510 3615 390 Changed...

Page 198: ...INTERFACE DESCRIPTION The universal interface provides a means of conveniently connecting external equipment to the transceiver Types of equipment that may be connected include modems and data terminals To utilize the Universal Interface the optional universal interface cable see Table 1 1 must be factory or field installed in the transceiver This cable is approximately 1 foot long and connects to...

Page 199: ...B 3 RECEIVE AUDIO SIGNALS B 3 1 PIN DESCRIPTIONS Descriptions of the receive audio pins are located in Table 2 and a block diagram showing how these signals are internally routed to the receive audio processing and gating circuitry is shown in Figure 2 B 3 2 RECEIVE AUDIO GATING The receive audio gating circuitry has been designed to provide several choices for receive audio routing such as inject...

Page 200: ...r and de emphasis circuits AC coupled with input impedance greater than 25k ohms Input level 1 volt P P nominal Signal is subjected to 300 3000 Hz TIA filter and de emphasis This input is shared with internal option wire out 2 Rx Aud In 10 Input to final audio amplifier chain after the mute gate and filtering but before volume control AC coupled with input impedance greater than 10k ohms Input lev...

Page 201: ...ing and deviation limiting circuitry When the standard DC coupling is used a DC bias of 2 5 volts 2 50 mV must be applied to this input This keeps the TCXO on frequency since there is then a DC path directly to the TCXO modulation input The TCXO frequency may need to be read justed when DC coupling is used Nominal input level is 1 volt P P at 60 system deviation Optional AC coupling is available b...

Page 202: ...hen used in conjunction with the INPUT A DATA ARQ option the radio goes to the data priority system group and waits for activity on the DATA ARQ input Microphone audio is muted Upon completion of the transmission that radio remains on the system group on which the data transmission occurred Refer to Section 7 3 for more information on ARQ arbitration Data R Revert Same as the preceding function ex...

Page 203: ...level is 5 ms with 4 dB hysteresis This output is active high Output A 15 Multi purpose output programmable for the following functions This is a CMOS output that can source up to 20 mA as described in Section 6 It is shared with option wire out 7 NOTE When the encryption option is installed this option is dedicated to the Clear Code function and the other options are not available Clear Code defa...

Page 204: ...Multi Net data chan nels but not on conventional channels Its purpose is to provide an efficient scheme for ACK NACK responses to each block of a multi block message It eliminates the normal repeater handshake interval usually required to change transmitting stations The scheme takes advantage of a repeater time out that terminates repeater transmission after a 1 second minimum interruption of the...

Page 205: ...gnal on the RX DATA GROUP OUTPUT B line The DATA ARQ signal must lead the DATA PTT signal by at least 3 ms 5 ms typical and the DATA ARQ signal must remain active for the entire data trans mission acknowledge session 2 The modem must then activate ground the DATA PTT PTT REQ N line for the transmission of any ACKs or NACKs During this time the radio does not encode any subaudible data 3 For the re...

Page 206: ...command or response is a unique sync character 0x7E If the sync character or the escape character appear at any other position in the message format it must be preceded by an inserted escape character 0x81 Supervision The second character of each message contains the command or response Supervision Type Length The third character is the message length of the entire command response message not cou...

Page 207: ...rs UI_CMD 0x10 This command tells the radio that the specified event and data if any has occurred and the radio should respond to it UI_RSP 0x0D This command is response to a UI_CMD or it informs an external device that an event has occurred B 8 6 SERIAL PORT COMMAND MESSAGES The following events must have the Supervision of UI_CMD 0x10 The first byte of the data field contains the command subcode...

Page 208: ...nse message CHANGE_SYS_GRP 0x07 System New system number Group New group number CLEAR_LOCKOUT_GID This tells the radio to clear the lock out of a selected GID group ID from block decoding This reverses the action of a SET_LOCKOUT_GID If the ID is not locked out no action is taken CLEAR_LOCKOUT_GID 0x1E Decode ID Group decode ID to lock out of the block decode range System Number System of group ID...

Page 209: ... hook INTERCEPT_TONE This tells the radio to turn the intercept tone on or off Note that the tone is generated by the radio s microprocessor and can be distorted if the radio is commanded to perform another action while the tone is turned on INTERCEPT_TONE 0x0A State New state 0 off non 0 on NOTIFY_ENABLE_FLAGS This message controls which if any asynchro nous notification messages are to be enable...

Page 210: ...UE_ID 0x0F RETURN_SYS_GRP This tells the radio to reply with the radio s current system and group using the SYS_GRP response message RETURN_SYS_GRP 0x10 RETURN_UNIQUE_ID This tells the radio to reply with the Unique ID or UID of the current Multi Net system using a UNIQUE_ID message RETURN_UNIQUE_ID 0x22 SELECT_KNOB_EVENT This tells the radio that the select knob has been rotated up rotated down o...

Page 211: ...to programmed operation 15 Undefined disable signal SET_RX_TX_GROUP_ID This tells the radio to set the Group Decode ID used for received calls and Group Encode ID used for transmit calls to the specified values If the radio is scanning this command is ignored If the radio is involved in a call the changes take effect when the call is concluded Priority calls are not affected If scanning is enabled...

Page 212: ...ration all flags set to zero Any pending outgoing messages are purged UI_DISCONNECT 0x19 B 8 7 RESPONSE MESSAGES The following responses must have a Supervision of UI_RSP 0x0D The first byte of the data field contains the response subcode The data field of each response subcode is shown DTMF_DIGITS_SENT This is a response to a SEND_DTMF_ DIGITS digits message and it informs an external device that...

Page 213: ... informing an external device that the attempt to access the channel system has succeeded or failed because the channel system was busy or out of range PTT_RESULT 0x04 Result Result of PTT press 1 success 2 busy 3 out of range RADIO_READY This is a response to a RESET message informing an external device that the radio is reset and ready for universal interface operation RADIO_READY 0x05 RADIO_NOT...

Page 214: ... Bit 3 Encryption Bit 4 System Bit 5 Transmitting Bit 6 Phone Group Bit 7 Backlight Status 3 Bit field Bit 0 LSB Bit 0 Rx Valid Call Bit 1 Group scan active Bit 2 System scan active Bits 3 7 Reserved RX_UNIQUE_ID This is a response to a RETURN_RX_UNIQUE _ID message informing an external device of the last received Unique ID UID RX_UNIQUE_ID 0x07 UID high byte High order byte of the UID UID low byt...

Page 215: ...at The display characters in the message are as follows ADx Alphanumeric display characters AD0 is the left most character and AD9 is the right most character SDx Status display characters SD0 is the left char acter and SD1 the right character The character to be displayed is in a compressed ASCII format encoded as follows Compressed Code ASCII code minus 0x20 NOTE The two digits after the x in 0x...

Page 216: ...Part Number 001 9750 007 12 00 hph Printed in U S A ...

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