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

9700 series multi-net ii mobile radio
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SERVICE
MANUAL
®
MULTI-NET
II MOBILE
S
DM 975
/977
®
UMMIT
X
X
800 or 900 MH
M
R
Z
OBILE
ADIO
®
MULTI-NET
II
13.6 VDC, 15 or 30 Watts
Part No. 242-97xx-111
Fifth Printing
December 2000
Supersedes 001-9750-005, 2/97

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  • Page 1 SERVICE MANUAL ® MULTI-NET II MOBILE DM 975 /977 ® UMMIT 800 or 900 MH OBILE ADIO ® MULTI-NET 13.6 VDC, 15 or 30 Watts Part No. 242-97xx-111 Fifth Printing December 2000 Supersedes 001-9750-005, 2/97...
  • Page 2 Part No. 242-97xx-111 Copyright © 2000 by the E.F. Johnson Company The E.F. Johnson Company designs and manufactures two-way radio equipment to serve a wide variety 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.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS TABLE OF CONTENTS GENERAL INFORMATION OPERATION SCOPE OF MANUAL ....1-1 FEATURES ......3-1 EQUIPMENT DESCRIPTION .
  • Page 4 TABLE OF CONTENTS (CONT’D) Profile ....... . 3-14 Hardware Hookup ......4-3 Banks .
  • Page 5 TABLE OF CONTENTS (CONT’D) Radio Network Terminal (RNT) ... . 5-2 Crystal Filters (Z205, Z206), IF Amplifier ..6-8 Dispatch Consoles ..... . . 5-2 Second Mixer/Detector (U200) .
  • Page 6 TABLE OF CONTENTS (CONT’D) Identifying SMD Resistors ....7-5 RF and PA Board Component Locator Guide 10-5 SMD Capacitor Identification ....7-6 Audio/Logic Board Comp.
  • Page 7 TABLE OF CONTENTS (CONT’D) APPENDIX B UNIVERSAL DIGITAL AND Setup Menu Functions Screen ....4-9 DATA INTERFACE Telephone Numbers Screen....4-11 Setup/Change Unique ID Screen.

  • Page 8: General Information

    GENERAL INFORMATION SECTION 1 GENERAL INFORMATION 1.1 SCOPE OF MANUAL programming software listed in Table 1-1. Transceiver operating parameters are stored in an EEPROM repro- This service manual contains installation, opera- grammable memory. Refer to Section 4 for more tion, programming, alignment, and service information programming information.

  • Page 9: Npspac Models (800 Mhz Only)

    GENERAL INFORMATION 1.5 ACCESSORIES The remote control unit uses the same front panel assembly that is used on front mount transceivers. Therefore, it operates the same as a front-mount trans- The accessories available for this transceiver are ceiver. A Remote Conversion Kit is available which listed in Table 1-2.

  • Page 10: Accessories

    GENERAL INFORMATION Table 1-1 ACCESSORIES Table 1-1 ACCESSORIES (Continued) Accessory Part No. Accessory Part No. Mounting Accessories [1] Programming Accessories Mounting bracket & hardware kit 023-9750-012 Remote prog interface (RPI) 023-9800-000 DC power cable & hardware, 22' 023-9750-010 Cable, RPI to transceiver 023-9750-005 Accessory cable 023-9750-011...

  • Page 11: E.f. Johnson Multi-Net Transceivers

    GENERAL INFORMATION Table 1-2 E.F. JOHNSON MULTI-NET TRANSCEIVERS M-Net/LTR/ System/ Freq Power Conv Transceiver Type Groups Special Features (MHz) Output Operation; Conv Talk-Around 8160 Avenger SK Portable 1 & 3W 14/11 Small size, Qk Sel Sw 8161 Avenger SK Portable 1 &...

  • Page 12: Product Warranty

    The warranty statement for this transceiver is E.F. Johnson Company available from your product supplier or from the Customer Service Department Warranty Department, E.F. Johnson Company, 299 299 Johnson Avenue Johnson Avenue, P.O. Box 1249, Waseca, MN 56093- P.O. Box 1249 0514.

  • Page 13: Replacement Parts

    Section 1.7. Return Authorization (RA) numbers are not necessary unless you have been given one by the Field E.F. Johnson Company Service Department. They require RA numbers for Service Parts Department exchange units or if they want to be aware of a specific 299 Johnson Avenue problem.

  • Page 14: General

    GENERAL INFORMATION ® SUMMIT DM 975x (800 MHz) SPECIFICATIONS The following are general specifications intended for use in testing and servicing this transceiver. For current advertised specifications, refer to the specification sheet available from the Marketing Department. Specifications are subject to change without notice. GENERAL Operating Modes Multi-Net, LTR, and Conventional...
  • Page 15 GENERAL INFORMATION ® SUMMIT DM 977x (900 MHz) SPECIFICATIONS The following are general specifications intended for use in testing and servicing this transceiver. For current advertised specifications, refer to the specification sheet available from the Marketing Department. Specifications are subject to change without notice. GENERAL Operating Modes Multi-Net, LTR, and Conventional...

  • Page 16: Scope Of Instructions

    INSTALLATION SECTION 2 INSTALLATION Item Item Description Part No. Description Part No. Amplified dynamic mic 250-0740-310 Self-drilling screw (4) 575-9077-565 Screw, 4-20 x 5/8” thread frmg (3) 575-5604-020 Knob (4) 547-0016-005 Screw, 4-24 x 1/4” sheet metal (3) 575-3604-008 Power cable (22') and hardware 023-9750-010 Microphone hanger clip 023-3514-001...

  • Page 17: Transceiver Programming

    INSTALLATION 2.1.3 TRANSCEIVER PROGRAMMING 2.2 TRANSCEIVER INSTALLATION 2.2.1 GENERAL The transceiver needs to be programmed before it is placed in service unless it was ordered as factory programmed. Programming instructions are located in Cable and Hardware Kit, Part No. 023-9750-010, Section 4.

  • Page 18: Accessory Cable Installation

    INSTALLATION Figure 2-2 Accessory Jack then splice it using the included butt splice connec- alert, public address, and external emergency switch tors. You may also need to cut the cable if it must be accessories. routed through the firewall and there is no opening large enough to clear the fuseholder.

  • Page 19: Ignition Sense

    INSTALLATION 2.4.4 HORN ALERT pin 1 back in to the internal speaker connected to pin 3. The other internal speaker terminal is internally connected to pin 2. The horn alert feature enables the vehicle horn or some other type of alert such as the lights when a call External Speaker is received that is programmed for this feature.

  • Page 20: Remote Control Unit Installation

    INSTALLATION Item Description Part Item Part Description Number Number Amplified dynamic mic 250-0740-310 Knob (4) 547-0016-005 Screw, 4-20 x 5/8” thrd frmg (3) 575-5604-020 Power cable (22') and hard 023-9750-010 Screw, 4-24 x 1/4” sheet metal (3) 575-3604-008 Accessory wire and hardware 023-9750-011 Microphone hanger clip 023-3514-001...
  • Page 21 INSTALLATION program special configurations, refer to the informa- “Disabled” is selected. When “Remote” is selected, tion which follows. The location of these switches is the transceiver and control unit volume controls shown in Figure 2-4. operate in parallel (the volume level is the sum of the levels set by both controls).

  • Page 22: Using Setup Mode

    INSTALLATION Figure 2-4 Remote Control Unit Programming Switches Keypad and Knob Disable (S101-1, 2) c. To change the default backlight condition, press the Select switch so that the backlight is either on or off S101-1 S101-2 as desired. Select Knob Enabled d.

  • Page 23: Using An External Speaker With Aremote Control Unit

    INSTALLATION c. Install the microphone hanger in a convenient loca- (high) state. This is sensed by the microprocessor tion using the screws for sheet metal or plastic. The which may then initiate such actions as halting scan- hanger must be connected to chassis ground for ning or enabling the conventional monitor mode.

  • Page 24: Installing Dc Noise Filter Kit

    INSTALLATION 2.7 INSTALLING DC NOISE FILTER KIT The DC Noise Filter Kit is available as a field or factory installed option as described in Section 1.5. This kit contains filter choke, Part No. 542-5010-005, which is installed in the main 13.8-volt line on the PA board.

  • Page 25: Transceiver Mounting Tray Installation

    INSTALLATION 2.8 TRANSCEIVER MOUNTING TRAY b. Install lock bracket MP1 using the four self-drilling INSTALLATION screws (HW3) and washers (HW5) included. Make sure that there is nothing under the mounting loca- 2.8.1 DESCRIPTION tion that will be damaged. Optional Transceiver Locking Tray, Part No. 585- 7000-185, is a lockable mounting bracket for Summit 2.8.3 LOCKING AND UNLOCKING DM transceivers and other transceivers that use that...

  • Page 26: Operation

    OPERATION SECTION 3 OPERATION • 3.1 FEATURES Transpond • Transmit inhibit NOTE: System operator programming determines the CONVENTIONAL FEATURES availability of some of the preceding features. • GENERAL FEATURES Busy indicator • Tone (CTCSS) and digital Call Guard squelch • •...

  • Page 27: Front Panel Controls

    OPERATION PTT Switch Optional DTMF Option Microphone Switches (6) Display Transmit Indicator Mic Jack Select Switch On-Off/Volume Speaker Figure 3-1 Front Panel Controls display. In addition, the return time can be Power Jack - Connection point for the 12-volt, nega- programmed for 1-15 seconds or infinite.

  • Page 28: Display

    OPERATION 3.2.2 DISPLAY P1/P2 - When a conventional system is selected, “P1” indicates that a call is being received on a Backlight - The display has a backlight which can be priority 1 group, and “P2” indicates that a call is programmed to automatically turn on with transceiver being received on a priority 2 group.

  • Page 29: Operating Modes

    OPERATION 3.3 OPERATING MODES are no tones or display messages to indicate busy and out-of-range conditions. 3.3.1 INTRODUCTION Monitoring Before Transmitting Each selectable system can be programmed with a unique set of transceiver operating parameters. One If the Transmit Disable On Busy feature is of these parameters is the operating mode which can programmed (see Section 3.9.1), monitoring is be Multi-Net, LTR, or conventional.
  • Page 30 OPERATION Block immediately drops that call and switches to another repeater to receive the higher priority call. Up to all 225 (M-Net) Up to all 250 (LTR) The priority order of the receive ID codes is as follows: Groups 1.Fixed Priority ID Code 1 Each group switch position selects one of the 2.Fixed Priority ID Code 2 selectable ID codes.

  • Page 31: Scan (System And Group)

    OPERATION Table 3-1 Multi-Net Standard And Special Call Receive Priority Interrupting Call Standard Intercon- Interro- Emer- Call in Progress Auxiliary Kill Reassign All Call Group nect gate gency Standard Group Interconnect Auxiliary Interrogate Kill Reassignment Emergency All Call [1] With these calls, the priority order is determined by the type of ID code as described in Section 3.3.4. [2] Since the “All Call”...

  • Page 32: Scan Resume Delay

    OPERATION If LTR or conventional systems are also Receive Delay programmed, they are skipped in the scan sequence because only Multi-Net systems are scanned. If an When a message is received while scanning, there attempt is made to enter scanning on with an LTR or is a programmable delay of 0-7 seconds before scan- conventional system displayed, scanning can be ning resumes (if it has not been disabled, such as by...

  • Page 33: Fixed Transmit In Scan Mode

    OPERATION 3.4.6 SCAN LIST PROGRAMMING with a fixed transmit system/group as described in Section 3.4.5. The three programmable configurations Systems and groups can be added to or deleted are as follows: from the scan list if the transceiver is equipped with an A/D (add/delete) option switch.

  • Page 34: Scanning The Various Types Of Systems

    OPERATION Table 3-2 Menu Mode And Option Switch Functions MENU OPTION SWITCH MENU OPTION SWITCH FUNCTION FUNCTION ITEM SWITCH LABEL ITEM SWITCH LABEL A/D (Scn List Prg) LTR System Search Auto-Registration Menu Mode Select MENU Auxiliary 1 AUX 1 Monitor Auxiliary 2 AUX 2 Phone Mode Select...

  • Page 35: A/D (Scan List Programming)

    OPERATION If the transceiver is equipped with a MENU which is changed. To move this bar between the option switch, the Menu Mode can also be selected to system and group, press the Select switch. An asterisk control various functions. The functions that can be in the status display next to the system or group controlled by the Menu Mode are indicated in indicates that it is in the scan list.

  • Page 36: Call Guard Squelch Disable

    OPERATION 3.5.7 CALL GUARD SQUELCH DISABLE HOME option switch. This function can also be used in the scan mode (scanning halts for the length of the The CG option switch is used to disable both receive scan delay). transmit and receive Call Guard squelch on the 3.5.12 HORN/LIGHT ALERT selected conventional system/group (if it has been programmed).

  • Page 37: Radio Sounds

    OPERATION 3.5.18 RADIO SOUNDS that condition. Refer to Section 3.7.3 for more infor- mation. The Menu Mode “RADIO SNDS” parameter 3.5.23 TALK-AROUND selects the tones that are heard when switches are pressed or busy or out-of-range conditions exist. If this menu item is not enabled, the tones that sound are The Menu Mode “TALKAROUND”...

  • Page 38: Proceed (Clear-To-Talk) Tone

    OPERATION vehicle. To turn this indicator off, change any front individually enabled or disabled on each dispatch panel control, take the microphone off-hook, press the group (a fixed delay of approximately 500 ms occurs PTT switch, or turn power off and then on again. The with interconnect and auxiliary calls).

  • Page 39: Profile

    OPERATION on) but does not automatically turn back on again Mode A2 - If the horn alert is to be always enabled when the ignition switch is turned off. Therefore, it when transceiver power is on, this mode could be must be manually turned on after starting the vehicle.

  • Page 40: Power Turn-Off Delay

    OPERATION To initiate changing from one bank to another, the The general operation of Emergency Calls is BANK option switch or Menu mode “BANK SELCT” described in Section 5.8.11. The two basic operating parameter is used. The Select switch is then turned to modes of the emergency switch are Manual Transmit move to the desired bank and pressed to select that and Automatic Transmit.

  • Page 41: Programmable Power Output

    OPERATION gency system/group every 10 seconds using access If temperature continues to increase at the 2-watt priority 1. level to the point where more serious damage could occur (this should seldom happen), the transmitter is When the emergency call is received by the disabled, a warning tone sounds, and “NO POWER”...

  • Page 42: Phone Mode

    OPERATION group (by dealer programming or the user), the circle/ The identification could include, for example, up to triangle symbol shown in Figure 3-3 is displayed. ten digits of the number being dialed or the name of the person or place being called. If the transceiver has Version 206 or earlier soft- ware (see Appendix A), encryption must be enabled to To use the Phone Mode, proceed as follows:...

  • Page 43: Display Of Software Version

    OPERATION 3.6.14 DISPLAY OF SOFTWARE VERSION access is completed. When the access is successful, a beep (standard and auxiliary calls) or a dial tone (tele- When transceiver power is turned on, the trans- phone calls) sounds and the call can then be placed in ceiver software version number and other information the normal manner.

  • Page 44: Auto-Registration (Multi-Net)

    OPERATION 3.7.2 AUTO-REGISTRATION (MULTI-NET) Revert group selection is determined by the programming of the bank “Wide Area Group Introduction Tracking” parameter. If this parameter is programmed “Yes”, the revert group does not change (it is the same Auto-registration is also described briefly in as it was before registration on the new site occurred).

  • Page 45: Transmitting Status Information (Multi-Net)

    OPERATION • The transceiver can exit a site while receiving a call, Auxiliary - These calls allow a mobile to communi- register on a new site, and then continue receiving cate with any individual mobile or a group of mobiles the call on the new site.
  • Page 46 OPERATION Special Call Authorization Directed Group Call (Current Site) When a mobile is programmed to make Intercon- 2-digit home repeater number + nect calls, system authorization is needed before 3-digit group ID service is available. This authorization is performed by the system operator using the System Management Directed Group Call (Directed Site) Module of the RNT.

  • Page 47: Transmit Inhibit

    OPERATION Landside-Originate Special Calls To make another call attempt, the PTT switch must be released and then pressed again. However, it Calls can be also be made from any landside tele- is a good idea to wait a few seconds because the 5- phone to specific mobiles (Interconnect calls) or second timer does not count down while the PTT groups (Directed Group calls).

  • Page 48: Ltr Mode Features

    OPERATION 3.8 LTR MODE FEATURES and a dial tone sounds. If the number is not dialed within a few seconds, normal operation resumes. This 3.8.1 FREE SYSTEM RINGBACK mode can be canceled at any time by activating any user control. If a busy condition exists when making an LTR 3.8.3 TRANSPOND telephone call, the Free System Ringback feature auto-...

  • Page 49: Call Guard Squelch

    OPERATION 3.9.2 CALL GUARD SQUELCH each second. When the data is decoded, 23-bit samples are taken and then the bits are rotated to determine if a Tone (CTCSS), digital, or inverted digital Call valid code was received. Guard squelch can be programmed on each conven- tional transmit and receive group in any order desired.

  • Page 50: Priority Group Sampling

    OPERATION disabled at the system level). Talk-around is then detected on the first priority group but is detected on enabled by simply selecting one of those groups. The the second priority group if is programmed. If the PRI unique identification can be used to identify which option switch or the Menu mode “PRIORITY”...

  • Page 51: Display Messages

    OPERATION access attempts are then made until the push-to-talk number of the system and then when the system switch is released and then pressed again. answers, a number specifying the mobile being called. This tone sounds to indicate when the number of the •...
  • Page 52 OPERATION AUTO REG - Indicates that the transceiver is NO TALK - Indicates that talk-around has been attempting to register on another system. Refer to disabled on the selected conventional system by “Auto-Registration” description on Section 3.7.2. programming (refer to Section 3.9.4). BLOCK CALL - Indicates that the call is being NOT MULTI - Indicates that an attempt was made to received on a Multi-Net or LTR block ID code (refer...

  • Page 53: Test Mode

    OPERATION SNGLE SCAN - Indicates that the single-site type of The various test functions are selected by scanning is occurring (refer to Section 3.4.2. pressing or rotating the front panel Select switch. The display indicates the mode that is currently selected SUMMIT 8 or 9 V 2xx X - This message is displayed and also such things as the selected frequency, power for an instant when transceiver power is turned on.

  • Page 54: Power Level 1 Set (Std Band)

    OPERATION 800 MHz TEST FREQUENCIES 900 MHz TEST FREQUENCIES Prog Ch No. Rx Freq Tx Freq Prog Ch No. Rx Freq Tx Freq Block 0 Block 0 851.0125 MHz 806.0125 MHz 935.0125 MHz 896.0125 MHz 860.5125 MHz 815.5125 MHz 938.0000 MHz 899.0000 MHz 869.9875 MHz 824.9875 MHz...

  • Page 55: Power Level 1 Set (Talk-Around Band)

    OPERATION Microphone audio, data, and the receiver are all (see Section 8). The 2W setting can also be in this disabled by this function. Power is adjusted by rotating range or 1-2 watts. the Select switch with the PTT switch pressed. The 3.11.6 MODULATION BALANCE display indicates the relative set point from 0-127 (127 is maximum power).

  • Page 56: Transceiver Programming

    TRANSCEIVER PROGRAMMING SECTION 4 TRANSCEIVER PROGRAMMING Remote Programming Interface (RPI) Cable Part No. 023-9800-000 Part No. 023-9750-005 Battery Antenna Ign Sense Figure 4-1 Programming Setup 4.1 GENERAL The cables from the RPI to the computer and transceiver are not included with the RPI. The 9800 4.1.1 PROGRAMMING SETUP RPI has a female DB9 connector for the computer connection.

  • Page 57: Eeprom Data Storage

    TRANSCEIVER PROGRAMMING ® With Summit DM and Viking HT/GT trans- Version 204 - Became available in early 1996. This ceivers, the switch on the RPI selects either the stan- version has an additional parameter on the “Main Radio dard or Flash programming mode. The indicator is Parameters”...

  • Page 58: Hardware Hookup

    TRANSCEIVER PROGRAMMING 4.1.11 HEADER INFORMATION To unpack these files so that they can be used, first make sure that the current directory is destination directory for these files. For example, if hard drive C: The following information is contained in the is the destination, make it the current directory (if header area at the top of the screen.

  • Page 59: Programming Software Menu Structure

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

  • Page 60: Main Menu

    TRANSCEIVER PROGRAMMING F2 (Help Screen) - Displays help information on the displayed screen. F3, F8 - Not used. F4 - F6 - Use varies according to the screen that is se- lected. Refer to the separate screen descriptions for more information. F7 - When in the main menu, displays the serial number of the transceiver being programmed (see next section).

  • Page 61: Upload Configuration From Radio

    TRANSCEIVER PROGRAMMING ously loaded from disk as described in the preceding section or from a transceiver as described in the next section. If there is no file currently in memory, a message is displayed. This function displays the Modify Radio File menu described in Section 4.3. When the program is started, the last file edited is automatically loaded if it is in the current directory.

  • Page 62: Modify Radio File Menu

    TRANSCEIVER PROGRAMMING tory are listed and then the arrow and Return keys are Number/Letters Preceding The Parameter - An al- used to select the file. When copying a file, it must be ternate method for quickly selecting these screens is to given a new name and/or destination in the destina- press the number or letter key preceding the descrip- tion box.

  • Page 63: Setup Menu Functions

    TRANSCEIVER PROGRAMMING An on-off indicator is available in the display for edited is selected from a list of the current systems that only the first three keys. Since some functions require is displayed. The arrow and Return keys are used to this indicator, they are not displayed for the keys that select the desired system.

  • Page 64: Define Option Buttons Screen

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

  • Page 65: Create/Edit/Copy/Delete Bank

    TRANSCEIVER PROGRAMMING 4.3.6 CREATE/EDIT/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”...

  • Page 66: Programming Prestored Telephone Numbers

    TRANSCEIVER PROGRAMMING 4.3.8 EDITING UNIQUE ID CODES System programming screen (see Section 4.3.5) or the Create/Edit Bank screen. The unique ID code programmed for each Multi- Systems are identified by alpha tags, and numbers Net system can be edited by selecting the “Setup/ are assigned when a system is linked to a bank.

  • Page 67: Channel Number Programming

    TRANSCEIVER PROGRAMMING With LTR systems, they can also be assigned priority number being transmitted is greater than the arbitrarily. However, for maximum system efficiency, priority number assigned to the ID code being trans- a scheme should be used which equalizes, as much as mitted, the system cannot be accessed at that time.

  • Page 68: Wide Area Group Tracking Programming

    TRANSCEIVER PROGRAMMING 4.4.6 WIDE AREA GROUP TRACKING 4.5 PROGRAMMING ONE TRANSCEIVER WITH PROGRAMMING ANOTHER (CLONING) When Wide Area Group Tracking is enabled with One transceiver can be used to program another Multi-Net Auto-Registration (see Section 3.7.2), the with identical information. One use of this type of same group remains selected when auto-registration programming may be to reprogram a transceiver in the on another system occurs.

  • Page 69: Programming Files

    TRANSCEIVER PROGRAMMING or have questions about accessing the ACES system, 023-9750-000 or 023-9800-000, can be used (the call 800-328-3911, extension 7 (USA and Canada) or earlier 023-5810-000 model will not work). 507-835-6222, extension 2100 (international). NOTE: The RPI must always be connected to the front 4.6.2 PROGRAMMING FILES panel jack of the transceiver (it cannot be connected to the microphone jack of a remote control unit).

  • Page 70: Main Parameters Screen

    TRANSCEIVER PROGRAMMING can be programmed and configurations that can be Audio Circuit States selected for each are described in the following infor- Audio_Rx - Modes 1*, 2, 3, 4 mation. Since the specific configuration of these Audio_Tx - Modes 1*, 2, 3, 4 parameters is determined by the equipment being used, detailed programming instructions are not NOTE: The system level programming described in the...

  • Page 71: System Parameters Screen

    TRANSCEIVER PROGRAMMING SYSTEM PARAMETERS Audio Circuit States Audio_Rx - Modes 1-4, Undefined* Audio_Tx - Modes 1-4, Undefined* * Default condition. If “Undefined” is selected, the Figure 4-10 System Universal Interface radio-level parameter programmed in the preceding Screen section is in effect. 4.7.4 AUXILIARY AND EMERGENCY SWITCH PROGRAMMING When the Auxiliary 2 function is programmed, it...

  • Page 72: Main Radio Parameters Screen

    TRANSCEIVER PROGRAMMING Table 4-1 Main Radio Parameters Screen Parameter Acceptable Responses Description Receive Delay Time 0, 1, 2, 3, 4, 5, 6, or 7 Time before scanning resumes after a message is received (Section 3.4.3). seconds Call Delay Time 0, 1, 2, 3, 4, 5, 6, or 7 Time before scanning resumes after message is transmitted (Section 3.4.3).

  • Page 73: Multi-Net System Parameters

    TRANSCEIVER PROGRAMMING Table 4-1 Main Radio Parameters Screen (Continued) Parameter Acceptable Responses Description Select Knob Return 0-15 seconds in 1-sec Programs the delay after a change is made before the bar returns to the Time steps default display programmed above. “0” programs no return. This bar indi- cates which display will be changed by the Select switch (Section 3.2).
  • Page 74 TRANSCEIVER PROGRAMMING Table 4-2 Multi-Net System Parameters (Continued) Parameter Acceptable Responses Description Offset Yes, No Programs if channels are offset 12.5 kHz on the low side. This applies to channels 1-600 only (Section 4.4.2). Home Repeater 1-30 Programs the number of the home repeater of the transceiver (Section Number 4.4.1).
  • Page 75 TRANSCEIVER PROGRAMMING Table 4-2 Multi-Net System Parameters (Continued) MULTI-NET GROUP PARAMETERS (The Group Parameter screen is selected by pressing F6) Parameter Acceptable Responses Description Yes, No Specifies if the group will be selectable. Alpha Tag A-Z, 0-9, etc. Specifies the 10-character alpha tag that is displayed when the group is selected.

  • Page 76: Ltr System Parameters

    TRANSCEIVER PROGRAMMING Table 4-3 LTR System Parameters Parameter Acceptable Responses Description Alpha Tag Any keyboard character Changes the 10-character alpha tag for the selected system. The system alpha tag is used only for programming and is not displayed by the trans- ceiver.
  • Page 77 TRANSCEIVER PROGRAMMING Table 4-3 LTR System Parameters (Continued) Parameter Acceptable Responses Description Horn Yes, No Programs if the horn sounds when a call is received on that ID code (Sec- tion 3.6.4). Encrypt Yes, No Programs if encryption is used on calls received on that ID code (Section 3.6.12).

  • Page 78: Conventional System Parameters

    TRANSCEIVER PROGRAMMING Table 4-4 Conventional System Parameters Parameter Acceptable Responses Description Alpha Tag Any keyboard character Changes the 10-character alpha tag for the selected system. The system alpha tag is used only for programming and is not displayed by the trans- ceiver.
  • Page 79 TRANSCEIVER PROGRAMMING Table 4-4 Conventional System Parameters (Continued) CONVENTIONAL GROUP PARAMETERS (The Group Parameter screen is selected by pressing F6) Parameter Acceptable Responses Description Yes, No Specifies if the group will be selectable. Alpha Tag A-Z, 0-9, etc. Specifies the 10-character alpha tag that is displayed when the group is selected.

  • Page 80: Create/Edit Bank Screen Parameters

    TRANSCEIVER PROGRAMMING Table 4-4 Conventional System Parameters (Continued) Parameter Acceptable Responses Description Scan List Yes, No Programs if that group is scanned by the group scan feature (Section 3.4.7). Data Yes, No Programs if that group can be used for data transmissions (Section 3.6.11) Table 4-5 Create/Edit Bank Screen Parameters Parameter Acceptable Responses...

  • Page 81: Call Guard (Ctcss/Dcs) Codes And Tones

    TRANSCEIVER PROGRAMMING Table 4-5 Create/Edit Bank Screen Parameters (Continued) Parameter Acceptable Responses Description Data System/Group Any system/group in Programs the default system/group that is selected for a data transmission selected bank if the selected group is not programmed for data (Section 3.6.11). Scan Type Multi-Site or Single-Site Programs the type of scanning that occurs when the scan mode is selected (Section 3.4.2).
  • Page 82 800 MHz CHANNEL TABLE TRANSCEIVER PROGRAMMING Prog Chan. FCC Chan. Mobile Rx Mobile Tx Prog Chan. FCC Chan. Mobile Rx Mobile Tx Freq. Freq Freq. Freq 851.0125 806.0125 852.3625 807.3625 851.0375 806.0375 852.3875 807.3875 851.0625 806.0625 852.4125 807.4125 851.0875 806.0875 852.4375 807.4375 851.1125...
  • Page 83 800 MHz CHANNEL TABLE TRANSCEIVER PROGRAMMING Prog Chan. FCC Chan. Mobile Rx Mobile Tx Prog Chan. FCC Chan. Mobile Rx Mobile Tx Freq. Freq Freq. Freq 853.7125 808.7125 855.0625 810.0625 853.7375 808.7375 855.0875 810.0875 853.7625 808.7625 855.1125 810.1125 853.7875 808.7875 855.1375 810.1375 853.8125...
  • Page 84 800 MHz CHANNEL TABLE TRANSCEIVER PROGRAMMING Prog Chan. FCC Chan. Mobile Rx Mobile Tx Prog Chan. FCC Chan. Mobile Rx Mobile Tx Freq. Freq Freq. Freq 856.4125 811.4125 857.7625 812.7625 856.4375 811.4375 857.7875 812.7875 856.4625 811.4625 857.8125 812.8125 856.4875 811.4875 857.8375 812.8375 856.5125...
  • Page 85 800 MHz CHANNEL TABLE TRANSCEIVER PROGRAMMING Prog Chan. FCC Chan. Mobile Rx Mobile Tx Prog Chan. FCC Chan. Mobile Rx Mobile Tx Freq. Freq Freq. Freq 859.1125 814.1125 860.4625 815.4625 859.1375 814.1375 860.4875 815.4875 859.1625 814.1625 860.5125 815.5125 859.1875 814.1875 860.5375 815.5375 859.2125...
  • Page 86 800 MHz CHANNEL TABLE TRANSCEIVER PROGRAMMING Prog Chan. FCC Chan. Mobile Rx Mobile Tx Prog Chan. FCC Chan. Mobile Rx Mobile Tx Freq. Freq Freq. Freq 861.8125 816.8125 863.1625 818.1625 861.8375 816.8375 863.1875 818.1875 861.8625 816.8625 863.2125 818.2125 861.8875 816.8875 863.2375 818.2375 861.9125...
  • Page 87 800 MHz CHANNEL TABLE TRANSCEIVER PROGRAMMING Prog Chan. FCC Chan. Mobile Rx Mobile Tx Prog Chan. FCC Chan. Mobile Rx Mobile Tx Freq. Freq Freq. Freq 864.5125 819.5125 865.8625 820.8625 864.5375 819.5375 865.8875 820.8875 864.5625 819.5625 865.9125 820.9125 864.5875 819.5875 865.9375 820.9375 864.6125...
  • Page 88 800 MHz CHANNEL TABLE TRANSCEIVER PROGRAMMING Prog Chan. FCC Chan. Mobile Rx Mobile Tx Prog Chan. FCC Chan. Mobile Rx Mobile Tx Freq. Freq Freq. Freq 866.6000 821.6000 867.2750 822.2750 866.6125 821.6125 867.2875 822.2875 866.6250 821.6250 867.3000 822.3000 866.6375 821.6375 867.3125 822.3125 866.6500...
  • Page 89 800 MHz CHANNEL TABLE TRANSCEIVER PROGRAMMING Prog Chan. FCC Chan. Mobile Rx Mobile Tx Prog Chan. FCC Chan. Mobile Rx Mobile Tx Freq. Freq Freq. Freq 867.9500 822.9500 868.6250 823.6250 867.9625 822.9625 868.6375 823.6375 867.9750 822.9750 868.6500 823.6500 867.9875 822.9875 868.6625 823.6625 868.0000...
  • Page 90 800 MHz CHANNEL TABLE TRANSCEIVER PROGRAMMING Prog Chan. FCC Chan. Mobile Rx Mobile Tx Prog Chan. FCC Chan. Mobile Rx Mobile Tx Freq. Freq Freq. Freq 869.3000 824.3000 869.6500 824.6500 869.3125 824.3125 869.6625 824.6625 869.3250 824.3250 869.6750 824.6750 869.3375 824.3375 869.6875 824.6875 869.3500...
  • Page 91 900 MHz CHANNEL TABLE TRANSCEIVER PROGRAMMING Prog Chan. FCC Chan. Mobile Rx Mobile Tx Prog Chan. FCC Chan. Mobile Rx Mobile Tx Freq. Freq Freq. Freq 935.0125 896.0125 935.6875 896.6875 935.0250 896.0250 935.7000 896.7000 935.0375 896.0375 935.7125 896.7125 935.0500 896.0500 935.7250 896.7250 935.0625...
  • Page 92 900 MHz CHANNEL TABLE TRANSCEIVER PROGRAMMING Prog Chan. FCC Chan. Mobile Rx Mobile Tx Prog Chan. FCC Chan. Mobile Rx Mobile Tx Freq. Freq Freq. Freq 936.3625 897.3625 937.0375 898.0375 936.3750 897.3750 937.0500 898.0500 936.3875 897.3875 937.0625 898.0625 936.4000 897.4000 937.0750 898.0750 936.4125...
  • Page 93 900 MHz CHANNEL TABLE TRANSCEIVER PROGRAMMING Prog Chan. FCC Chan. Mobile Rx Mobile Tx Prog Chan. FCC Chan. Mobile Rx Mobile Tx Freq. Freq Freq. Freq 937.7125 898.7125 938.3875 899.3875 937.7250 898.7250 938.4000 899.4000 937.7375 898.7375 938.4125 899.4125 937.7500 898.7500 938.4250 899.4250 937.7625...
  • Page 94 900 MHz CHANNEL TABLE TRANSCEIVER PROGRAMMING Prog Chan. FCC Chan. Mobile Rx Mobile Tx Prog Chan. FCC Chan. Mobile Rx Mobile Tx Freq. Freq Freq. Freq 939.0625 900.0625 939.7375 900.7375 939.0750 900.0750 939.7500 900.7500 939.0875 900.0875 939.7625 900.7625 939.1000 900.1000 939.7750 900.7750 939.1125...
  • Page 95 900 MHz CHANNEL TABLE TRANSCEIVER PROGRAMMING Prog Chan. FCC Chan. Mobile Rx Mobile Tx Prog Chan. FCC Chan. Mobile Rx Mobile Tx Freq. Freq Freq. Freq 940.4125 901.4125 940.7125 901.7125 940.4250 901.4250 940.7250 901.7250 940.4375 901.4375 940.7375 901.7375 940.4500 901.4500 940.7500 901.7500 940.4625...

  • Page 96: Multi-Net System Overview

    SYSTEMS PUBLIC AUDIO AND SWITCHED DATA LINK MULTI-NET 856x/7x/8x/9x, 8605/15/22/55, TELEPHONE NETWORK RADIO NETWORK SUMMIT DM 975x/977x MOBILE TRANSCEIVERS MULTI-NET (PSTN) TERMINAL (RNT) AUDIO AND DATA LINK LTR 98xx, 8600/04, 856x/857x, 5876, 86xx, VIKING GT/HT 965x/967x MOBILE TRANSCEIVERS DISPATCHER CONSOLE...

  • Page 97: Mobile Transceivers

    MULTI-NET SYSTEM OVERVIEW 5.1.4 RADIO NETWORK TERMINAL (RNT) or another Multi-Net system. Phone lines or some other type of link can be used to provide a commu- nication path. The RNT along with the SMM (System Manage- ment Module) control the Multi-Net system. The ®...

  • Page 98: Definitions Of Multi-Net Terms

    MULTI-NET SYSTEM OVERVIEW 5.2 DEFINITIONS OF MULTI-NET TERMS Radio Network Terminal (RNT) - The RNT together with the System Management Module provide control Conventional System - A type of radio system that is of a Multi-Net system. The RNT can interconnect licensed to operate on only a single channel.

  • Page 99: Home And Status Repeaters

    MULTI-NET SYSTEM OVERVIEW 5.3 HOME AND STATUS REPEATERS repeater became inoperative, all the mobiles assigned to that home repeater would not be able to place or When a mobile transceiver is programmed, it is receive calls. To prevent this from happening, each site assigned “home”...

  • Page 100: Mobile-Repeater Data Signaling

    MULTI-NET SYSTEM OVERVIEW by the RNT, the SMM alerts the system operator. The If it is a home repeater, these messages are for its faulty repeater may then be automatically or manually assigned mobiles that are being trunked to other shut down by the SMM.

  • Page 101: Standard And Special Calls

    MULTI-NET SYSTEM OVERVIEW 5.8 OTHER MULTI-NET FEATURES With Multi-Net signaling, repeater data bus synchronization is done distributively. Therefore, no 5.8.1 UNIQUE ID CODES single repeater is responsible for data bus synchroniza- tion. If any of the repeaters at the site become inopera- tive, the others continue to operate normally.

  • Page 102: All Call

    MULTI-NET SYSTEM OVERVIEW Telephone and other special calls cannot be interrupted group reprogrammable in this manner prevents the by standard calls. Refer to Section 3.7.4 for more transceiver from becoming inoperative because of a information. programming error caused by a poor RF signal. 5.8.3 ALL CALL Dynamic reprogramming is performed by the system manager.

  • Page 103: Dynamic Channel Assignment

    Most Multi-Net transceivers also have a program- The System Key is provided to the system operator by mable parameter called Auto-Registration Dropout the E.F. Johnson Company. Criteria. This parameter determines the point at which the mobile attempts to register on another site. This is 5.8.10 DYNAMIC CHANNEL ASSIGNMENT...

  • Page 104: Voice Encryption

    MULTI-NET SYSTEM OVERVIEW 5.8.16 VOICE ENCRYPTION Encryption can be used with Multi-Net, LTR, and conventional operation. Each group can be NOTE: Voice encryption is currently not available for programmed for encryption and then when that group E.F. Johnson 900 MHz transceivers. is selected, encryption is automatically enabled.
  • Page 105 MULTI-NET SYSTEM OVERVIEW Revised February 1997 5-10 Part No. 001-9750-005...

  • Page 106: Circuit Description

    CIRCUIT DESCRIPTION SECTION 6 CIRCUIT DESCRIPTION 6.1 GENERAL TRANSCEIVER DESCRIPTION 6.1.3 RECEIVER 6.1.1 INTRODUCTION The receiver is a double-conversion type with intermediate frequencies of 52.950 MHz and 450 kHz. The Summit 97xx transceiver contains the Receiver selectivity is enhanced by two 52.950 MHz following PC board assemblies: RF, PA (power ampli- crystal filters and a 450 kHz ceramic filter.

  • Page 107: Synthesizer Circuit Description

    CIRCUIT DESCRIPTION the microprocessor similar to an EEPROM. This transmit frequency in the transmit mode and 52.950 allows the operating program to be updated using the MHz below the receive frequency in the receive mode. standard programming setup and special software. Therefore, its operating band is approximately 798- This eliminates the need to change a ROM or the 869 MHz (800 MHz models) or 882-941 MHz (900...

  • Page 108: Transceiver Block Diagram

    CIRCUIT DESCRIPTION Figure 6-1 Transceiver Block Diagram August 1993 Part No. 001-9750-001...

  • Page 109: Vco And Tcxo Modulation

    CIRCUIT DESCRIPTION The DC voltage applied across CR904 provides The capacitive leg is formed by C905, PIN diode compensation to keep modulation relatively flat over CR905, and C906. When the Q6 output of U802 is a the entire bandwidth of the VCO. This compensation high level and the Q7 output is a low level, CR905 is is required because modulation tends to increase as the forward biased and C905 and C906 are effectively...

  • Page 110: Prescaler (U800)

    CIRCUIT DESCRIPTION Figure 6-2 U801 Block Diagram remains stable over changes in temperature. flows so receiver, and CR902 presents a high-impedance into that the voltage drop across R809 equals the drop the transmitter. L800/C841 and L803/C813 neutralize across R815 and the base- emitter junction of Q802. the slight capacitance of the diode when it is reverse biased to improve isolation.

  • Page 111: Lock Detect (Q808, Q809)

    CIRCUIT DESCRIPTION programming circuitry. The basic operation was counter reaches zero. Both counters then reset and the described in Section 6.2.1. cycle is repeated. The A counter is always programmed with a smaller number than the N Channel Programming counter. While the A counter is counting down, the modulus control output to the prescaler (pin 12) is low Channels are selected by programming the R, N, and the prescaler divides by 129.

  • Page 112: Charge Pump (Q804-Q807)

    CIRCUIT DESCRIPTION 6.2.9 VOLTAGE MULTIPLIER (CR804A/B, This lock detect signal is integrated by Q808 and CR805A/B) Q809. C831 charges through R830 and R832 and discharges through C831 and Q808. When the negative-going lock detect pulses widen, C831 The voltage multiplier circuit provides a supply discharges to the turn-off point of Q809.

  • Page 113: First Mixer (Q205)

    CIRCUIT DESCRIPTION biased so that the voltage drop across R297 is equal to in Section 6.3.1. The output of the IF amplifier is the drop across R294 and the base- emitter of Q291. applied to a 6 dB pad and then to crystal filter Z206. This arrangement provides a bias that remains stable This is a two-pole filter with a bandwidth of 18 kHz as changes occur in temperature.

  • Page 114: Audio Power Amplifier (U100)

    CIRCUIT DESCRIPTION 6.4 TRANSMITTER CIRCUIT DESCRIPTION Pin 10 of U200 is the output of an internal RSSI (receive signal strength indicator) circuit. It provides a high-impedance current sink that increases in conduc- NOTE: RF amplifier Q290 is described in Section tion in proportion to increases in the IF signal level.

  • Page 115: Power Control (U504, Q511, Q502, Q506)

    CIRCUIT DESCRIPTION In the transmit mode, Q507 and Q514 are turned power levels that can be programmed using the test on. Current then flows through Q507, L506, CR506, mode (see Section 3.11). Power output is controlled by and shunt networks CR507/L508/R514 and CR502/ varying the supply voltage to one of the amplifier L507/ R528.

  • Page 116: Audio/Logic Board Digital Circuit Description

    CIRCUIT DESCRIPTION amplifier U504D. The base voltage of Q502 is the data bus (AD0-AD7) to be used for memory controlled by current sense amplifier Q506 and a D-A addressing as well as data input and output. For more converter formed by shift register U503 and a resistor information, see “Address/Data Bus”...
  • Page 117 CIRCUIT DESCRIPTION drops below the normal range. Reset clears several This voltage decreases as power amplifier tempera- internal registers and restarts the operating program. ture increases. This prevents improper operation resulting from low- voltage conditions. PE1 - Analog DC voltage of 0-5 volts from the direc- tional coupler on the PA board that increases with the Power-on reset occurs automatically for 4064 reflected power.

  • Page 118: Memory And I/O Addressing

    CIRCUIT DESCRIPTION Serial RS-232 Interface the digital signal processor circuit in the slave configu- ration. The serial RS-232 port has three functions. First, it provides data communication with the computer PD5 (SS) - In the slave configuration, this is the slave used to program the transceiver.

  • Page 119: Digital Signal Processor (U300-U302)

    CIRCUIT DESCRIPTION U406. This prevents inadvertent writing to that device. pin 2. If the RX LOOP signal is high, the opposite The F7 output of U407 is not used. occurs. 6.5.3 DIGITAL SIGNAL PROCESSOR (U300- R644, R645, and C639 are used to minimize the U302) “click”...

  • Page 120: Receive Data Processing (U606A-D)

    CIRCUIT DESCRIPTION The value of C109 controls the rate at which gain This channel of U600 is normally not used with changes in response to changes in the input level. Pin front-mount transceivers and is programmed for 5 is the inverting input of an internal operational maximum attenuation because the PE4 input is pulled amplifier and pin 7 is the output of this amplifier.

  • Page 121: Rssi Comparator (U602C)

    CIRCUIT DESCRIPTION valid data may be present. The squelch circuit is If the remote control unit is used, a 600-ohm controlled by the amount of noise present in the balanced line is used to apply the audio signal to receive audio signal. When no signal or a weak signal differential amplifier U603A.

  • Page 122: Splatter Filter (U604C, U605D), Summing Amplifier (U605A)

    CIRCUIT DESCRIPTION If optional companding is used, jumper R690 is provided by R708 and R709. The output of the summing removed and the compandor board is installed. amplifier is fed to the synthesizer on the RF board. Companding is the compressing and then expanding of the audio signal to reduce noise.
  • Page 123 CIRCUIT DESCRIPTION August 1993 6-18 Part No. 001-9750-001...

  • Page 124: Servicing

    SERVICING SECTION 7 SERVICING 7.1 GENERAL mode is especially useful when the transceiver is programmed for LTR operation because the logic 7.1.1 PERIODIC CHECKS inhibits operation until a handshake is completed with a repeater. This transceiver should be put on a regular main- tenance schedule to ensure that it continues to operate 7.1.5 SURFACE-MOUNTED COMPONENTS properly.

  • Page 125: Synthesizer Troubleshooting

    SERVICING 7.2.3 VCO MODULE AND PRESCALER Once the device is installed in the PC board, it is protected by internal diode protection circuits, so the chance of damage is reduced. A service bench protec- Supply Voltage tion kit, Part No. 299-0026-001, can be ordered from the Service Parts Department.

  • Page 126: Synthesizer (U801)

    SERVICING Figure 7-1 Simplified Synthesizer Block Diagram number can be determined as follows (calculation of channel you have selected is calculated as described in A and N is described in Section 7.2.5). Section 7.2.5. The input and output frequencies can be measured as follows: Prescaler Div No.
  • Page 127 SERVICING divide number is correct, continue the checks which Lock Detector - When the VCO is locked on follow. frequency, the waveform at U801, pin 7 should be as follows. The lock detect signal on the collector of Phase Detector - When the VCO is not locked on Q809 should then be low.

  • Page 128: Determining Counter Divide Numbers

    SERVICING 7.2.5 DETERMINING COUNTER DIVIDE 7.5 AUDIO/LOGIC BOARD NUMBERS TROUBLESHOOTING 7.5.1 DIGITAL CIRCUITS The R, N, and A counter divide numbers can be determined as follows: Because of the complexity of the digital portion R (Reference) Counter of the audio/logic board, troubleshooting may be diffi- cult.

  • Page 129: Smd Capacitor Identification

    SERVICING Table 7-1 Ceramic SMD Capacitor Identification as follows. For example, “273” indicates a 27k ohm resistor and “339” indicates a 3.3 ohm resistor. American EIA Standard Japanese EIA Standard First Letter/ Value First Letter/ Value X X X Number (pF) Number (pF)

  • Page 130: Smd Inductor Identification

    SERVICING Table 7-2 SMD Inductor Identification 7.6.4 SMD INDUCTOR IDENTIFICATION SMD inductors (P.N. 542-9000-xxx) use three colored dots to indicate the value. The two dots on the left side indicate the first and second digits of the Multiplier value in nanohenries, and the single dot on the right Color 1st Digit 2nd Digit...
  • Page 131 SERVICING Revised January 1995 Part No. 001-9750-003...

  • Page 132: Alignment Procedure And Performance Tests

    ALIGNMENT PROCEDURE AND PERFORMANCE TESTS SECTION 8 ALIGNMENT PROCEDURE AND PERFORMANCE TESTS 8.1 GENERAL 8.1.1 INTRODUCTION The following alignment should be performed if repairs are made that could affect the factory align- ment. Performance tests are located in Sections 8.5 and 8.6, and it is recommended that these tests be run on transceivers before they are placed in service.

  • Page 133: Transmitter Tuneup

    ALIGNMENT PROCEDURE AND PERFORMANCE TESTS c. The meter reading should be 9.5V ± 2.0V. Also Refer to Section 8.3.2 for information on how to check the other receive test channels. The voltage make these adjustments. should be 3-18 VDC. If this voltage is not within these ranges, there is a problem with the synthesizer NOTE: A tuning tool with a 0.030"...

  • Page 134: Power Level 2-4, 2W Adjustment

    ALIGNMENT PROCEDURE AND PERFORMANCE TESTS d. Press and rotate the Select switch to select the TA a. Press and rotate the Select switch to select the BAL PWR SET function (see Section 3.11.4). Press the ADJUST function of the test mode (see Section Select switch to display TA PWR 1.

  • Page 135: Receiver Alignment

    ALIGNMENT PROCEDURE AND PERFORMANCE TESTS 8.4 RECEIVER ALIGNMENT i. Tune L202, L205, and L209 for a maximum IF level. Repeat if necessary. Remove the oscilloscope 8.4.1 FRONT END ALIGNMENT or voltmeter. CAUTION j. Tune L201 for minimum audio distortion which should be 3% or less.

  • Page 136: Local Tone Level Adjust

    ALIGNMENT PROCEDURE AND PERFORMANCE TESTS 8.4.4 LOCAL TONE LEVEL ADJUST c. Increase the generator output until the receiver unsquelches. This should occur by 9 dB SINAD ± 2 dB. Then decrease the output until the receiver R643 adjusts the level of the tone which indi- squelches.

  • Page 137: Receiver Performance Tests

    ALIGNMENT PROCEDURE AND PERFORMANCE TESTS PERFORMANCE TESTS 8.5 RECEIVER PERFORMANCE TESTS 8.6 TRANSMITTER PERFORMANCE TESTS CAUTION NOTE: For accurate power measurement at 800 and 900 MHz, use a minimum number of connectors with a Do not transmit with the signal generator connected teflon or better dielectric.

  • Page 138: Parts List

    PARTS LIST SECTION 9 PARTS LIST Ref No. Description Part No. Ref No. Description Part No. C 206 1.0 µF 16V tantalum smd 510-2625-109 C 207 39 pF ±5% NPO cer smd 510-3601-390 RF AND PA BOARDS, HARDWARE C 208 6.8 pF ±5% NPO 50V cer smd 510-3601-689 AND MISCELLANEOUS...
  • Page 139 PARTS LIST RF and PA Boards, Misc Ref No. Description Part No. Ref No. Description Part No. C 243 10 pF ±5% NPO 50V cer smd 510-3601-100 C 505 39 pF ±5% NPO 50V cer smd 510-3615-390 C 244 15 pF ±5% NPO 50V cer smd 510-3601-150 C506 12 pF hi q cer smd...
  • Page 140 PARTS LIST RF and PA Boards, Misc Ref No. Description Part No. Ref No. Description Part No. C 530 2.7 pF ±5% NPO 50V cer smd 510-3615-279 (800 MHz 15W) C 550 .01 µF X7R ±10% 50V cer smd 510-3605-103 4.3 pF ±5% NPO 50V cer smd 510-3615-439 C 551...
  • Page 141 PARTS LIST RF and PA Boards, Misc Ref No. Description Part No. Ref No. Description Part No. C 569 56 pF ±10% 50V high Q smd 510-3663-560 C 828 .001 µF ±5% NPO cer smd 510-3601-102 (800 MHz, 35W) C 829 .001 µF ±5% NPO cer smd 510-3601-102 39 pF ±5% NPO 50V cer smd...
  • Page 142 PARTS LIST RF and PA Boards, Misc Ref No. Description Part No. Ref No. Description Part No. HW 001 Captive screw, covers 537-9007-045 6T 22 AWG smd inductor 542-0015-006 HW 002 Screw, 6-32 x 5/16” Torx 575-0006-010 (900 MHz 30W) HW 003 Plug, option cable hole 032-0792-075 L 504...
  • Page 143 PARTS LIST RF and PA Boards, Misc Ref No. Description Part No. Ref No. Description Part No. Q 807 NPN low-noise amp 576-0001-300 P 100 2-pin header 515-9031-201 Q 808 PNP low noise amp 576-0003-650 P 101 3-pin header 515-9031-202 Q 809 PNP low noise amp 576-0003-650...
  • Page 144 PARTS LIST RF and PA Boards, Misc Ref No. Description Part No. Ref No. Description Part No. R 214 100 ohm ±5% 1/8W smd 569-0105-101 R 522 1.0k ohm ±5% 1/8W smd 569-0105-102 R 215 270 ohm ±5% 1/8W smd 569-0105-271 R 525 1.0k ohm ±5% 1/8W smd...
  • Page 145 PARTS LIST RF and PA Boards, Misc Ref No. Description Part No. Ref No. Description Part No. R 577 1.0k ohm ±5% 1/8W smd 569-0105-102 R 812 1.0k ohm ±5% 1/8W smd 569-0105-102 (800 MHz 15W) R 813 1.0k ohm ±5% 1/8W smd 569-0105-102 1.5k ohm ±5% 1/8W smd 569-0105-152...

  • Page 146: Audio/Logic Board

    PARTS LIST RF and PA Boards, Misc Ref No. Description Part No. Ref No. Description Part No. R 847 1.0k ohm ±5% 1/8W smd 569-0105-102 52.95 MHz 8 kHz bw 4P filter 532-0009-011 R 848 10k ohm ±5% 1/8W smd 569-0105-103 (900 MHz) R 849...
  • Page 147 PARTS LIST Audio/Logic Board Ref No. Description Part No. Ref No. Description Part No. C 602 .22 µF ±10% X7R 50V cer smd 510-3607-224 C 650 .01 µF X7R ±10% 50V cer smd 510-3605-103 C 603 .22 µF ±10% X7R 50V cer smd 510-3607-224 C 651 .047 µF ±10% X7R 50V cer smd...
  • Page 148 PARTS LIST Audio/Logic Board Ref No. Description Part No. Ref No. Description Part No. C 707 0.1 µF X7R ±5% 50V cer smd 510-3610-104 J 404 12-pin connector 515-7111-261 C 708 .0033 µF X7R ±5% cer smd 510-3609-332 J 405 6-pin connector 515-7111-255 C 709...
  • Page 149 PARTS LIST Audio/Logic Board Ref No. Description Part No. Ref No. Description Part No. R 325 11k ohm ±5% 1/8W smd 569-0105-113 R 445 11k ohm ±5% 1/8W smd 569-0105-113 R 326 3.3k ohm ±5% 1/8W smd 569-0105-332 R 446 11k ohm ±5% 1/8W smd 569-0105-113 R 400...
  • Page 150 PARTS LIST Audio/Logic Board Ref No. Description Part No. Ref No. Description Part No. R 500 10k ohm ±5% 1/8W smd 569-0105-103 R 650 47k ohm ±5% 1/8W smd 569-0105-473 R 501 1k ohm ±5% 1/8W smd 569-0105-102 R 655 620 ohm ±5% 1/8W smd 569-0105-621 R 502...
  • Page 151 PARTS LIST Audio/Logic Board Ref No. Description Part No. Ref No. Description Part No. R 699 150k ohm ±5% 1/8W smd 569-0105-154 R 740 330k ohm ±5% 1/8W smd 569-0105-334 R 745 15k ohm ±5% 1/8W smd 569-0105-153 R 700 82k ohm ±5% 1/8W smd 569-0105-823 R 746...

  • Page 152: Front Panel Assembly

    PARTS LIST Audio/Logic Board Ref No. Description Part No. Ref No. Description Part No. FRONT PANEL ASSEMBLY RT 600 Thermistor 1k ohm 569-3013-002 (Both Front and Remote Models) U 300 Microprocessor, DSP TMS320C17 544-5003-150 A 151 Front panel assembly, black 587-9650-002 U 301 Latch, 3-state 74HC573...

  • Page 153: Compandor Kit

    PARTS LIST Ref No. Description Part No. Ref No. Description Part No. R 109 68k ohm ±5% 1/8W smd 569-0105-683 S 154 10k ohm volume pot/push-on sw 562-0018-075 R 110 68k ohm ±5% 1/8W smd 569-0105-683 S 155 Switch, rotary and push 583-2042-001 R 111 390 ohm ±5% 1/8W smd...

  • Page 154: Remote Control Unit And Remote Kit

    PARTS LIST Ref No. Description Part No. Ref No. Description Part No. ACCESSORY WIRE KIT C 300 4.7 µF 10V tantalum smd 510-2624-479 C 301 .047 µF ±10% X7R 50V cer smd 510-3606-473 Part No. 023-9750-011 C 302 4.7 µF 10V tantalum smd 510-2624-479 Fuseholder components: C 303...
  • Page 155 PARTS LIST Remote Control Unit/Remote Kit Ref No. Description Part No. Ref No. Description Part No. R 114 10k ohm ±5% 1/8W smd 569-0105-103 R 164 150 ohm ±5% 1/8W smd 569-0105-151 R 115 10k ohm ±5% 1/8W smd 569-0105-103 R 200 Jumper 569-0105-001...

  • Page 156: Transceiver Exploded View (Part 1)

    TRANSCEIVER EXPLODED VIEW (PART 1) Revised December 2000 9-19 Part No. 001-9750-007...

  • Page 157: Transceiver Exploded View (Part 2)

    Remote Control Parts TRANSCEIVER EXPLODED VIEW (PART 2) Revised January 1995 9-20 Part No. 001-9750-003...

  • Page 158: Schematic Diagrams And Component Layouts

    SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS SECTION 10 SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS BASING DIAGRAMS TRANSISTORS Part Number Basing Diagram Identification 576-0001-300 576-0002-057 576-0003-603 576-0003-608 576-0003-612 576-0003-616 576-0003-618 576-0003-621 576-0003-626 576-0003-634 576-0003-650 576-0003-657 576-0003-658 576-0004-805 576-0004-817 576-0004-818 576-0004-901 576-0006-114 Number on Schematic DIODES 523-1504-001 523-1504-002...

  • Page 159: Standard Amplified Dynamic Microphone

    SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS STANDARD AMPLIFIED DYNAMIC MICROPHONE Part No. 250-0740-310 Ref No. Description Part No. Ref No. Description Part No. Amplified Dynamic Microphone MP006 Switch bracket 017-1885-030 MP007 Hanger button 013-1216-005 Part No. 250-0740-310 MP008 Crimp retainer 017-2222-006 C 001 3.3 µF 16V tantalum chip 510-2625-339...

  • Page 160: Transceiver-To-Transceiver Cloning Cable

    TRANSCEIVER-TO-TRANSCEIVER CLONING CABLE PART NO. 597-2002-268 RS - 232 / TTL CONVERTER U004 HANGER SERIAL PORT MAX232 TI OUT R1 OUT T1 IN R1 IN 12V REGULATOR V POS V NEG BATTERY LM7L12 C1 POS C2 POS C1 NEG C2 NEG R2 OUT R2 IN 4, 5...

  • Page 161: Rpi-To-Transceiver Programming Cable

    RPI-TO-TRANSCEIVER PROGRAMMING CABLE Part No. 023-9750-005 CR10 10 9 RPI (PART NO. 023-9800-000) BOARD LAYOUT Revised December 2000 10-4 Part No. 001-9750-007...

  • Page 162: Rf And Pa Board Component Locator Guide

    SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS RF AND PA BOARD COMPONENT LOCATOR GUIDE The following guide can be used to locate components on the RF and PA boards. Refer to the grid around the board to determine the approximate location of a component. Board Board Board...
  • Page 163 SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS RF and PA Board Component Locator Guide (Cont’d) Board Board Board Board C 815 CR 805 Q 108 R 118 C 818 EP 205 A6\C6 Q 200 R 120 C 819 EP 500 Q 202 R 200 C 820 F 500...
  • Page 164 SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS RF and PA Board Component Locator Guide (Cont’d) Board Board Board Board R 511 R 553 R 809 R 846 R 512 R 554 R 810 R 847 R 513 R 555 R 811 R 848 R 514 R 558 R 812...
  • Page 165 SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS AUDIO/LOGIC BOARD COMPONENT LOCATOR GUIDE The following guide can be used to locate components on the audio/logic board. Refer to the grid around the board to determine the approximate location of a component. Comp Loc Top/Bot Comp Loc Top/Bot Comp...
  • Page 166 SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS Audio/Logic Board Component Locator Guide (Cont’d) Comp Loc Top/Bot Comp Loc Top/Bot Comp Loc Top/Bot Comp Loc Top/Bot J 400 R 326 R 447 R 503 J 401 R 400 R 448 R 601 J 402 R 401 R 449 R 602...
  • Page 167 SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS Audio/Logic Board Component Locator Guide (Cont’d) Comp Loc Top/Bot Comp Loc Top/Bot Comp Loc Top/Bot Comp Loc Top/Bot R 658 R 705 R 758 U 410 R 659 R 706 R 759 U 411 R 660 R 707 R 760 U 412...

  • Page 168: Interconnect Schematic

    Revised January 1995 INTERCONNECT SCHEMATIC 10-11 Part No. 001-9750-003...

  • Page 169: Display Board Schematic

    DISPLAY BOARD SCHEMATIC Revised January 1995 10-12 Part No. 001-9750-003...
  • Page 170 DISPLAY BOARD TOP VIEW DISPLAY BOARD BOTTOM VIEW Revised January 1995 10-13 Part No. 001-9750-003...
  • Page 171 RF BOARD SCHEMATIC (REVISED 800 MHZ) Revised January 1995 10-14 Part No. 001-9750-003...
  • Page 172 RF BOARD BOARD LAYOUT (ALL 800/900 MHZ) Revised January 1995 10-15 Part No. 001-9750-003...
  • Page 173 RF BOARD BOARD SCHEMATIC (900 MHZ) Revised January 1995 10-16 Part No. 001-9750-003...
  • Page 174 RF BOARD BOARD SCHEMATIC (UNREVISED 800 MHZ) Revised January 1995 10-17 Part No. 001-9750-003...
  • Page 175 SHIFT REGISTER R522 Part of (D/A CONVERTER) RT500 AMPLIFIER J501 U503 Not Used 4094 R526 R534 SUMMING FORWARD BATT PA B+ SWITCH POWER CONTROL R525 C594 R571 AMPLIFIER POWER AMP C595 C525 820pF R563 R558 R548 R591 39pF R550 R503 R560 C542 R547...
  • Page 176 SHIFT REGISTER R522 Part of (D/A CONVERTER) J501 AMPLIFIER U503 Not Used 4094 R526 R534 SUMMING FORWARD BATT PA B+ SWITCH POWER CONTROL R525 C525 C594 R571 AMPLIFIER POWER AMP C595 39pF 820pF R563 R558 R548 R591 R550 R503 R560 C542 R547 R500...
  • Page 177 A001 Stabilization A001 Stabilization DC Power Cable Board (15W Versions) With 15W Version, These Components Deleted and Q501 Replaced by Jumper MP506 Board (30W Versions) Coax To Antenna Jack Blue C534 L500 R527 EP500 L503 C568 C548 C508 C519 L504 C563 C558 C569...
  • Page 178 PA BOARD SCHEMATIC (900 MHZ, 30W) Revised January 1995 10-21 Part No. 001-9750-003...
  • Page 179 PA BOARD SCHEMATIC (900 MHZ, 15W) Revised January 1995 10-22 Part No. 001-9750-003...
  • Page 180 15W MODELS PA BOARD BOARD LAYOUT (900 MHZ/UNREVISED 800 MHZ, 15W/30W/35W) Revised January 1995 10-23 Part No. 001-9750-003...
  • Page 181 PA BOARD SCHEMATIC (UNREVISED 800 MHZ, 35W) Revised January 1995 10-24 Part No. 001-9750-003...
  • Page 182 PA BOARD SCHEMATIC (UNREVISED 800 MHZ, 15W) Revised January 1995 10-25 Part No. 001-9750-003...

  • Page 183: Schematic (Part 1 Of 2)

    AUDIO/LOGIC BOARD SCHEMATIC (PART 1 OF 2) Revised January 1995 10-26 Part No. 001-9750-003...

  • Page 184: Schematic (Part 2 Of 2)

    AUDIO/LOGIC BOARD SCHEMATIC (PART 2 OF 2) Revised January 1995 10-27 Part No. 001-9750-003...

  • Page 185: Board Layout Top View

    AUDIO/LOGIC BOARD LAYOUT (TOP VIEW) Revised January 1995 10-28 Part No. 001-9750-003...

  • Page 186: Board Layout Bottom View

    AUDIO/LOGIC BOARD LAYOUT (BOTTOM VIEW) Revised January 1995 10-29 Part No. 001-9750-003...

  • Page 187: Revised Compandor Board Schematic

    Part of J100 BYPASS GATE Rx Audio In U102D MC14066 EXPANDER U100A U102C C110 SA5710 R106 14066 Rx Audio Out R114 560k 1.5k Rect In Res R1 C102 U101B .015 C111 R115 2904 Output R108 1.5k AG In SOURCE R105 Inv In 270k R111...

  • Page 188: Remote Transceiver Interconnect Schematic

    REMOTE TRANSCEIVER INTERCONNECT SCHEMATIC Revised January 1995 10-31 Part No. 001-9750-003...

  • Page 189: Control Unit Interface Board Schematic

    REMOTE CONTROL UNIT INTERFACE BOARD SCHEMATIC Revised January 1995 10-32 Part No. 001-9750-003...
  • Page 190 REMOTE CONTROL UNIT INTERFACE BOARD TOP VIEW REMOTE CONTROL UNIT INTERFACE BOARD BOTTOM VIEW Revised January 1995 10-33 Part No. 001-9750-003...

  • Page 191: Appendix Arevision Summary

    REVISION SUMMARY APPENDIX A REVISION SUMMARY A.1 INTRODUCTION “C” (all except 9755), “D” (9755) - These models have Version 204 software that supports the horn alert fea- This appendix describes the changes that have ture for interconnect and Multi-Net unique ID calls (see been made to the Summit DM transceivers and Table A-1).

  • Page 192: Operating Software Version Numbers

    REVISION SUMMARY Table A-1 Operating Software Version Numbers Approx Version Release Description NOTES Number Date 9/93 Original release 11/93 Added automatic NPSPAC deviation adjust and fixed various minor problems. 2/94 Added telephone mode and provided NPSPAC devia- tion in test mode. Also fixed various minor problems. 3/94 Added horn alert for interconnect and unique ID calls.

  • Page 193: Remote Control Unit Compatibility

    REVISION SUMMARY later operating software (see Section A.2). If the earlier to Section 3.6.4 for more information on horn alert version (201) is used to program those transceivers, er- operation. ratic operation will result. Version 205 Software The Version 202 software has added screens for programming the UD I universal interface features Version 205 of the programming software was...

  • Page 194: New Features

    REVISION SUMMARY group to be automatically selected in the new system. displayed when the bank is selected or power is turned For example, the transceiver can be programmed so on. Conversely, if it is programmed “NO”, the last that if a telephone group is selected and auto-registra- selected system/group is displayed.
  • Page 195 REVISION SUMMARY Table A-2 Summit DM Part Changes Through January 1995 (Continued) Component Old Description Old Part No. New Part No. Action (New Description of Added Parts) (Location) HW 8 Ground clip (900 MHz only) 017-2226-040 Added HW 9 .167 x .277 steel flat washer (cover screws) 596-9408-009 Added...
  • Page 196 REVISION SUMMARY Table A-2 Summit DM Part Changes Through January 1995 (Continued) Component Old Description Old Part No. New Part No. Action (New Description of Added Parts) (Location) TCXO CHANGE In early 1995, a running change was made to the TCXO of all models. When the new TCXO is used (the part number is printed on the case), the value of three resistors must also be changed.

  • Page 197: Other Late Changes

    REVISION SUMMARY NOTE: The changes in the following table have been made to the schematics and parts list in this manual. Table A-3 Additional Summit DM Part Changes Through May 1998 Component New Description New Part No. Old Part No. Action RF AND PA BOARDS C 260...

  • Page 198: Appendix Buniversal Digital And Data Interface

    UNIVERSAL DIGITAL AND DATA INTERFACE APPENDIX B UNIVERSAL DIGITAL AND DATA INTERFACE B.1 GENERAL INFORMATION DB25 Connector RX AUDIO B.1.1 SCOPE J601 Rx Demod Out Rx Demod In This appendix describes the Universal Digital and ™ ® Data Interface (UD ) as it functions with Summit Rx Filt Out DM Multi-Net®...

  • Page 199: Power Supply

    UNIVERSAL DIGITAL AND DATA INTERFACE • CAUTION: The DB25 universal interface connector is Internal accessories installed in the option slots such a non-standard port. Therefore, do not connect any as encryption or compandor modules. equipment to this port not specially designed for this B.3 RECEIVE AUDIO SIGNALS interface because equipment damage may result.

  • Page 200: Receive Audio Signal Routing

    UNIVERSAL DIGITAL AND DATA INTERFACE Table B-2 Receive Audio Pin Description Function Description Rx Demod Out Buffered discriminator output before any filtering. DC coupled with 3.8-volt DC bias. Output impedance less than 600 ohms. Output level 1V P-P at 60% system deviation. Response +1/-3 dB DC - 5 kHz.

  • Page 201: Transmit Audio Signal Routing

    UNIVERSAL DIGITAL AND DATA INTERFACE Table B-4 Transmit Audio Pin Description Function Description Tx Mic Out Buffered single-ended microphone signal before any filtering. DC coupled with 3.2-volt DC bias. Output impedance less than 200 ohms. Output level 1V P-P nominal. This output is shared with internal option wire-out 3.

  • Page 202: Input Control Signals

    UNIVERSAL DIGITAL AND DATA INTERFACE B.5 INPUT CONTROL SIGNALS B.6 OUTPUT CONTROL SIGNALS The universal interface has four input control The universal interface has six output control signals. Two of these signals are dedicated to push-to- signals. One of these signals is an analog output dedi- talk and squelch functions, and the other two (Input A/ cated to the RSSI (Received Signal Strength Indicator) B) are user programmable for various functions.
  • Page 203 UNIVERSAL DIGITAL AND DATA INTERFACE Table B-6 Control Signal Description (Continued) Function Description OUTPUTS RSSI Out Direct analog RSSI (Received Signal Strength Indicator) output. The DC voltage of this output decreases from 8 - 0 volts as signal strength increases. Output impedance is greater than 100k ohms.

  • Page 204: Interfacing With A Data Modem

    UNIVERSAL DIGITAL AND DATA INTERFACE B.7 INTERFACING WITH A DATA MODEM B.7.3 ARQ ARBITRATION B.7.1 GENERAL Introduction The following information describes how an ARQ is used on all LTR and Multi-Net data chan- external data modem can be connected to the universal nels, but not on conventional channels.

  • Page 205: Serial Bus Protocol

    UNIVERSAL DIGITAL AND DATA INTERFACE transmitting mobile. Normal embedded data flow then 2. The modem must then activate (ground) the DATA resumes before time-out occurs. PTT (PTT REQ N) line for the transmission of any ACKs or NACKs. During this time, the radio does Modem Initiated Transmission not encode any subaudible data.

  • Page 206: Physical Signal Path

    UNIVERSAL DIGITAL AND DATA INTERFACE This serial bus is the same bus that is used for a common format. The following is a description of transceiver programming and remote control. It is the message elements. available on the following connectors: Sync Supervision Length Message...

  • Page 207: Message Supervision Types

    UNIVERSAL DIGITAL AND DATA INTERFACE Serial Port Command Messages ACK (0x01) - This message tells the external device Message to be Sent Message Received that the previous message was received correctly. Checksum Added Checksum Verified NACK (0x02) - This command tells the external device that the previous message as received contained errors.
  • Page 208 UNIVERSAL DIGITAL AND DATA INTERFACE Serial Port Command Messages (Cont’d) AUDIO_PATH CALL_IND = 0x06 State = New state (0 = off, non 0 = on) AUDIO_PATH Mode Path CHANGE_SYS_GRP 1 byte 1 byte 1 byte CHANGE_SYS_GRP System Group This tells the radio to set the specified receive or 1 byte 1 byte 1 byte...
  • Page 209 UNIVERSAL DIGITAL AND DATA INTERFACE Serial Port Command Messages (Cont’d) • An operator action occurs This tells the radio that the mic hanger has been • An operator action is simulated placed on or off hook. This message is ignored if the •...
  • Page 210 UNIVERSAL DIGITAL AND DATA INTERFACE Serial Port Command Messages (Cont’d) PTT_EVENT = 0x0C RETURN_SYS_GRP State = New state (0 = released, non 0 = pressed) RETURN_SYS_GRP RESET 1 byte RESET This tells the radio to reply with the radio’s 1 byte current system and group using the SYS_GRP response message.
  • Page 211 UNIVERSAL DIGITAL AND DATA INTERFACE Serial Port Command Messages (Cont’d) SET_AUTO_DISPLAY SET_RX_TX_GROUP_ID SET_AUTO_DISPLAY Status SET_RX_TX_GROUP_ID Decode ID Encode ID 1 byte 1 byte 1 byte 1 byte 1 byte This tells the radio to send and UPDATE_ This tells the radio to set the Group Decode ID DISPLAY message whenever the contents of the radio (used for received calls) and Group Encode ID (used display change.

  • Page 212: Response Messages

    UNIVERSAL DIGITAL AND DATA INTERFACE Serial Port Response Messages (Cont’d) B.8.7 RESPONSE MESSAGES This tells the radio to enable its internal horn switch (pulse on for 0.5 second and off for 0.5 second for 3 cycles). Note that many internal actions can The following responses must have a Supervision cancel this operation including many serial of <UI_RSP>...
  • Page 213 UNIVERSAL DIGITAL AND DATA INTERFACE Serial Port Response Messages (Cont’d) LOCKOUT_GID PTT_RESULT = 0x04 Result = Result of PTT press (1 = success, 2 = busy, 3 = out of range) LOCKOUT_GID Count Decode IDs System No. 1 byte 1 byte Count bytes 1 byte RADIO_READY...
  • Page 214 UNIVERSAL DIGITAL AND DATA INTERFACE Serial Port Response Messages (Cont’d) Bit 5 = Rx valid call started Bit 3 = Encryption Bit 6 = Rx valid call ended Bit 4 = System Bit 7 = ZERO (reserved) Bit 5 = Transmitting Bit 6 = Phone Group Event group 3 = Bit field (Bit 0 = LSB) Bit 7 = Backlight...

  • Page 215: Update_Display Message Coding

    UNIVERSAL DIGITAL AND DATA INTERFACE Serial Port Response Messages (Cont’d) field includes the requested system and group This is a response to either a GET_DISPLAY_ numbers. UPDATE or SET_AUTO_DISPLAY message which is used to display the specified information in the 10- SYS_GRP_INVALID = 0x09 character alphanumeric and 2-character status display.
  • Page 216 Part Number 001-9750-007 12-00 hph Printed in U.S.A.

This manual is also suitable for:

Summit dm 977xSummit dm 975x multi-net iiSummit dm 977x multi-net ii

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