Ltr-net 7200 series portable uhf trunked radio (63 pages)
Summary of Contents for E.F. Johnson Company 5100 Series
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SERVICE MANUAL DIGITAL/ANALOG PORTABLE RADIO 5100 S ERIES ORTABLE ADIO APCO Project 25 – Conventional – Trunked SMARTNET ® SmartZone ® Analog FM Conventional 1 and 5 Watts 1 and 4 Watts 700 MHz 1 and 2.7 Watts 800 MHz 1 and 3 Watts 7.2 VDC Part No.
UHF Mid: 403-470 MHz ming, alignment, and service information for the UHF High: 450-512 MHz EFJohnson 5100 series portable radio. 700/800 MHz: 762-806 and 806-870 MHz 800 MHz: 806-870 MHz (see next section) The 51SL and Ascend (Multi-Net) models are...
GENERAL INFORMATION used in systems where the channel spacing is 25 kHz Systems or 30 kHz. A system is a collection of channels or talk Digital - C4FM modulation is used. The voice is digi- groups belonging to the same repeater site. It defines tized, filtered, error corrected, optionally encrypted, all the parameters and protocol information required to and then transmitted.
GENERAL INFORMATION Zones M (Model) 1 - 5100 series A zone is a collection of up to 16 channels of any 2 - 51SL series type. For example, a zone could include 12 conven- 5 - Ascend series tional channels and 4 SMARTNET channels. One use...
GENERAL INFORMATION function of PCConfigure to determine which proto- NOTE: Emergency 24-hour technical support is also cols and options are enabled in your radio (see available at the 800 and preceding numbers during off Section 4). hours, holidays, and weekends. D Encryption Hardware (see Section 1.13.2) When your call is answered at the EFJohnson 1 - No encryption hardware (software encryp)
GENERAL INFORMATION Table 1-1 Accessories Table 1-1 Accessories (Continued) Accessory Part No. Accessory Part No. Batteries 585-5100-130 2.5” D-swivel belt loop only 3600 mAH NiMH standard 587-5100-360 585-5100-132 3.0” D-swivel belt loop only 3600 mAH NiMH std intrin safe 587-5100-361* Radio D-swiv button for -130/-132 loops 585-5100-127 Battery case for AA alkaline 250-5100-280...
GENERAL INFORMATION When returning equipment for repair, it is also 1.11 INTRINSICALLY SAFE INFORMATION recommended that you use a PO number or some other reference number on your paperwork in case you need 1.11.1 INTRODUCTION to call the repair lab about your unit. These numbers are referenced on the repair order and make it easier Intrinsically safe 5100 transceivers have been and faster to locate your unit in the lab.
GENERAL INFORMATION cient electrical and thermal energy under normal oper- specified in the testing procedure occur. In other ation or specified fault conditions per the testing words, it must be able to withstand two simultaneous standard to cause ignition of a specific flammable or unrelated breakdowns without causing ignition.
GENERAL INFORMATION include combustible dusts, and Class III materials ceiver. These protocols digitize the voice and then include ignitable fibers or flyings. The typical hazard- encrypt it using the DES or AES algorithm and an ous materials in each group and class are shown in encryption key.
GENERAL INFORMATION . y l " r " B , ) r t a l t a l o i t o i t a l i a l i a l i a l i Figure 1-1 Hardware Changes Flowchart 1.13 RADIO HARDWARE CHANGES Version B - The changeover to this version occurred starting in late 2003.
GENERAL INFORMATION The Revision Letter in the radio identification 1.13.2 LOGIC AND UI BOARD CHANGES number (see Section 1.5) can be used to determine if a VHF radio has this new Version B board. Radios with As shown in Figure 1-1 and Table 1-4, there have a Revision Letter of “B”...
GENERAL INFORMATION Table 1-4 51xx Family Logic and Firmware Versions Analog Channel Digital Channel Application Encryption Encryption Logic/Radio Version [1] (Firmware) Code Base DES-XL DES-OFB Version 1 (No Module/Software Encryption) 1.xx Current standard version which uses the -110 Logic board and -410 UI Board. Not FIPS approved. Version 2 (uses EFJ SEM module) 2.xx Current version which has the EFJohnson SEM...
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GENERAL INFORMATION 5100 PORTABLE 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 your sales representative. Values are typical and are subject to change without notice. GENERAL Frequency Range VHF: 136-174 MHz...
BATTERY, ACCESSORY, AND DISASSEMBLY INFORMATION SECTION 2 BATTERY, ACCESSORY, AND DISASSEMBLY INFORMATION Battery Release Button Figure 2-1 Battery Removal 2.1 BATTERY INFORMATION Do not expose the charger base to high level RF signals while a battery is being charged because this 2.1.1 BATTERY REMOVAL/INSTALLATION may cause a charger fuse to blow (especially in the UHF range).
BATTERY, ACCESSORY, AND DISASSEMBLY INFORMATION 2.1.4 BATTERY CARE fails to hold a charge or provides only a very short operating time, it must be replaced with a new unit. WARNING: Do not incinerate a battery pack because it may explode. Also, do not short circuit the terminals A fully charged battery provides approximately because the battery pack and the object causing the 13 hours of service before recharging is required.
BATTERY, ACCESSORY, AND DISASSEMBLY INFORMATION Install Lock Screw Here Accessory Connector Latch Hook Figure 2-3 Accessory Installation 2.3 ACCESSORY INSTALLATION Option Select Lines To connect an accessory such as a speaker- Opt Sel 1 (pin 1) and Opt Sel 2 (pin 5) of the microphone to the transceiver, refer to Figure 2-3 and UDC (accessory) connector indicate to the control proceed as follows:...
BATTERY, ACCESSORY, AND DISASSEMBLY INFORMATION 2.4 TRANSCEIVER DISASSEMBLY 2.4.1 SEPARATING FRONT COVER AND CHASSIS 1. Remove the antenna. 2. Insert a small flat-blade screwdriver or similar tool between the plastic front cover and metal chassis as shown below. Carefully lift the chassis out of the cover with the screwdriver blade. Raise it to approximately the point shown in the next illustration.
BATTERY, ACCESSORY, AND DISASSEMBLY INFORMATION 2.4.2 REMOVING RF AND LOGIC BOARDS FROM CHASSIS 1. Separate the front cover and chassis as described in the preceding section. The RF and logic boards are located inside the metal chassis as shown below. Logic Board RF Board 2.
BATTERY, ACCESSORY, AND DISASSEMBLY INFORMATION 2.4.3 REMOVING UI (USER INTERFACE) BOARD 1. Separate the front cover and chassis as described in Section 2.4.1. The UI board is located inside the front cover as shown below. Microphone UI Board Unsolder Wires Remove Unlock Screws...
BATTERY, ACCESSORY, AND DISASSEMBLY INFORMATION 2.4.4 REMOVING SWITCH ASSEMBLY 1. Separate the front cover and chassis as described in Section 2.4.1. Then remove the UI board as described in the preceding section. 2. Pull the rubber knobs and plastic channel number ring off the shafts. 3.
OPERATION SECTION 3 OPERATION 3.1 GENERAL The operation of the 5100 transceiver is included in a separate manual that is included on the CD-ROM with this manual.
CD-ROM with the service manual. NOTE: The -920 cable, -488 software, and a CD manual are included in the 5100 Series Programming Kit, Part No. 250-5100-003. 4.2 COMPUTER DESCRIPTION Tone (CTCSS) and digital (DCS) Call Guard...
TRANSCEIVER PROGRAMMING 4.4 CLONING PROCEDURE For more information on cloning one radio with another, refer to Section 14 of the PCConfigure The Clone feature allows one radio to be used to Manual included on the CD-ROM with this service program another with identical information. The manual.
RS-232 communications 5.1.1 INTRODUCTION between the radio and remote computer stations for the purposes of radio programming, tuning, encryption key The EFJohnson 5100 series digital portable radio loading and software downloading. ® uses a PowerPC -based controller and a Digital Signal...
CIRCUIT DESCRIPTION VHF RF BOARD (VERSION C) Transmit Mode This bit stream in then encoded, two bits at a time, into a digital level corresponding to one of the The signal from the microphone is amplified and four allowable frequency deviations. This produces then routed to the CODEC chip where it is first digi- 16-bit symbols with a rate of 4800 Hz.
CIRCUIT DESCRIPTION VHF RF BOARD (VERSION C) IF of 64.455 MHz to a second IF frequency of 2.1 Reference PLL MHz. Phase Locked Loop circuitry inside of the AD9864 operates with a phase-detector frequency The reference PLL phase locks the receive PLL of 15 kHz.
CIRCUIT DESCRIPTION VHF RF BOARD (VERSION C) UHF RF BOARD (VERSION C) applied to the transmit PLL transmit VCO (U47) fixed tuned bandpass filters are used in the front-end provides high-frequency modulation. Signals for both of the receiver. Depending on the desired receive band, modulation ports are provided by DACs on the digital the appropriate filter is selected using RF switches board.
CIRCUIT DESCRIPTION UHF RF BOARD (VERSION C) Analog / Digital Conversion and Processing - A RF2361 buffer amplifier (U6) provides the Sigma-delta converters provide I and Q sampling required level of drive for the receiver mixer's local directly from the second IF frequency. The oscillator signal as discussed above.
CIRCUIT DESCRIPTION 700/800 MHz RF BOARD (VERSION C) RF / Logic Interface Bandpas s Filters Receiver Back End (Digital IF) IF Am p Varacter-Tuned 762 - 776 MHz Fif = 2.1MHz MIXER RF2361 Bandpass Filter 64.455 MHz MOSI Switc h MMBR941 Switc h Switc h...
CIRCUIT DESCRIPTION 700/800 MHz RF BOARD (VERSION C) LNA minimizes the impact of the filter loss on the frequency of 62.355 MHz in order to convert the receiver sensitivity. first IF of 64.455 MHz to a second IF frequency of 2.1 MHz.
CIRCUIT DESCRIPTION 700/800 MHz RF BOARD (VERSION C) RF BOARD OVERVIEW (VERSION A/B) backend IC. The center frequency of this oscillator is corrected using a DC tuning voltage from the digital board during receive and it is modulated with voice or To maintain the specified Transmitter output data during transmit.
CIRCUIT DESCRIPTION VHF/UHF RF BOARD (VERSION A/B) Figure 5-4 RF Board Block Diagram (Version A/B) The frequency generation function is performed The transmitter consists of an RF PA IC that gets by three ICs and associated circuitry. The reference an injection signal from the VCO. Transmit power is oscillator provides a frequency standard to the synthe- controlled by two custom ICs that monitor the output sizer/prescaler IC which controls the VCO IC.
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CIRCUIT DESCRIPTION VHF/UHF RF BOARD (VERSION A/B) device (Q202), whereas the VHF Tx VCO’s active circuit. The Tx VCO feedback capacitors are C219 device is a transistor inside the VCO buffer. The UHF and C220. Varactor diode CR203/CR207 sets the Tx Tx VCO uses two active devices, one external (Q203) frequency while varactor CR202 is the Tx modulation and the other internal to the VCO buffer.
CIRCUIT DESCRIPTION VHF/UHF RF BOARD (VERSION A/B) 5.6.2 ANTENNA SWITCH filtered by a second broadband, fixed-tuned, bandpass filter consisting of C6, C7, C8, C80, C86, C87, C88, The antenna switch is a current device consisting C97, C99, L3, L4, L5, and L30 (VHF) or C4 -C7, of a pair of diodes (CR108/ CR109) that electroni- C88 - C94, C99, and L11 - L15 (UHF) to improve the cally steer RF between the receiver and the transmitter.
CIRCUIT DESCRIPTION VHF/UHF RF BOARD (VERSION A/B) filtered, mixed down to baseband, and filtered again. RF Power Amplifier Module The differential output data stream is then sent to the logic board where it is decoded to produce the recov- RF power amplifier module U105 is a wide-band, ered audio.
CIRCUIT DESCRIPTION 800 MHz RF BOARD (VERSION A/B) • 5.7 800 MHz RF BOARD (VERSION A/B) For first LO injection frequencies 777-797 MHz, pins 6 and 7 must both be low. NOTE: The following describes the earlier Version A • and B RF boards described in Section 1.13.
CIRCUIT DESCRIPTION 800 MHz RF BOARD (VERSION A/B) loop divider's output signal with the signal from diodes CR102 and CR104 must be back-biased to U304 (that is divided down after it is applied to pin properly route the received signal. 14 of U302).
CIRCUIT DESCRIPTION 800 MHz RF BOARD (VERSION A/B) capacitor C213. The mixer's LO port is matched to the filters in the ABACUS IC. The ABACUS IC contains radio's PLL by a capacitive tap, C207 and C206. a feedback AGC circuit to expand the dynamic range of the sigma-delta converter.
CIRCUIT DESCRIPTION UI BOARD (ALL VERSIONS) Q501. Transistor Q501 responds to the base drive level 5.8.3 MEMORY by varying the DC control voltages applied to pin 2 of the RF PA which controls the RIF power level of Early Units (Versions A and B in Section 1.13) module U502.
CIRCUIT DESCRIPTION LOGIC BOARD (VERSION C) LOGIC BOARD (VERSION A/B) 5.9.2 DIGITAL SIGNAL PROCESSING 5.10 LOGIC BOARD (VERSION A/B) OVERVIEW NOTE: The following describes the Version A and B The DSP section consists of a DSP chip (U15) logic board described in Section 1.13. and the CODEC (U27).
CIRCUIT DESCRIPTION LOGIC BOARD (VERSION A/B) ADSIC via the serial port. In the ADSIC, the VCO D/ initial programming, the reference clock must be A converts the sampled modulation signal into an present. analog signal and then routes this signal to the VCO on the RF Board.
CIRCUIT DESCRIPTION LOGIC BOARD (VERSION A/B) AUDIO CIRCUIT (VERSION A/B) 5.10.4 TRANSMIT SIGNAL PATH through a serial port. This serial port consists of pins SCKR, RFS, RxD, TxD, SCKT, and TFS on the The ADSIC contains an analog-to-digital (ADC) ADSIC. converter for the microphone.
ALIGNMENT PROCEDURE SECTION 6 ALIGNMENT PROCEDURE 5100 Test Cable DB9 - Connect To Part No. 023-5100-940 Serial Port Audio Out Cable Part No. 023-5100-950 Communication Monitor SINAD Meter/ AC Voltmeter Figure 6-1 Alignment Setup 6.1 GENERAL All adjustments are set digitally using the computer.
ALIGNMENT PROCEDURE Menu Bar Tool Bar Radio Information Tune Category Buttons Adjusts Freq Tuning Instructions Select Next Adjustment Mode/Tool Tip Figure 6-2 PCTune Main Screen (Version 2.0) Software Installation On-Line Help Proceed as follows to install this software: On-line help is currently not available. 1.
ALIGNMENT PROCEDURE - Selects the Partial Tune mode the same as Tuning Categories the Transfer > Tune Partial menu (see Section 6.3.3) This mode allows manual selection of These buttons select the tuning adjustment to be the desired Tune Category and then automati- performed.
ALIGNMENT PROCEDURE selected. These parameters default to the last selected change the radio series or band or exit an adjustment condition the next time the program is started. before it is complete. Set Band - Selects the operating band of the radio. All tuning values are reset to the factory defaults.
ALIGNMENT PROCEDURE • Section 4) should not be used because it does not To perform these tests, a Digital Communication have the audio output jack. Analyzer such as Motorola R2670 or IFR 2975 is required. 2. Connect the other end of the test cable to the acces- •...
ALIGNMENT PROCEDURE 2. Set the analyzer output level for 0.35 µV (–116 the receiving radio. This tone can also be used to test dBm) at the receiver antenna jack. The BER (Bit other radios. Error Rate) should be 5% or less. (This is a ratio of the receive bit errors to the total number of bits 7.
ALIGNMENT PROCEDURE Squelch Sensitivity Transmit Frequency 5. Increase the signal generator output from zero and 2. Monitor the transmit frequency and at room temper- note the SINAD when unsquelching occurs. It ature it should ±100 Hz. At other temperatures (–30 should be approximately 8 dB.
PARTS LIST SECTION 7 PARTS LIST Ref No. Description Part No. Ref No. Description Part No. VHF 134-174 MHz, Version B 023-5110-001 CHASSIS, HARDWARE, MISC UHF 380-450 MHz, Version B 023-5120-001 UHF 403-470 MHz, Version B 023-5130-001 UHF 450-512 MHz, Version B 023-5140-001 A 030 Rear housing assembly, std version 023-5100-030...
PARTS LIST CHASSIS, HARDWARE, MISC (Cont’d) LOGIC BOARD (VERSION C) Ref No. Description Part No. Ref No. Description Part No. LOGIC BOARD (A100) MP 030 RF shield, improved Ver A/B bds 017-2229-552 Part No. 023-5500-120 RF shield, Version C RF boards 017-2229-569 (see Section 1.13.1) (Version C, see Section 1.13)
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PARTS LIST LOGIC BOARD (VERSION C) Ref No. Description Part No. Ref No. Description Part No. C 083 33 pF ±10% 25V cer smd 510-3681-330 CR 004 Switching diode 523-1004-021 C 084 33 pF ±10% 25V cer smd 510-3681-330 CR 006 3.6V zener diode 523-2016-369 C 085 33 pF ±10% 25V cer smd...
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PARTS LIST LOGIC BOARD (VERSION C) Ref No. Description Part No. Ref No. Description Part No. R 029 4.7k ohm ±5% 1/16W smd 569-0165-472 R 096 1k ohm ±5% 1/16W smd 569-0165-102 R 030 4.7k ohm ±5% 1/16W smd 569-0165-472 R 097 1k ohm ±5% 1/16W smd 569-0165-102...
PARTS LIST LOGIC BOARD (VERSION A/B) USER INTERFACE BOARD (VERSION C) Ref No. Description Part No. Ref No. Description Part No. R 097 100k ohm ±5% 1/16W smd 569-0165-104 C 011 .1 µF ±10% X7R 25V cer smd 510-3675-104 R 098 100k ohm ±5% 1/16W smd 569-0165-104 C 012...
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PARTS LIST USER INTERFACE BOARD (VERSION C) Ref No. Description Part No. Ref No. Description Part No. C 059 .1 µF ±10% X7R 25V cer smd 510-3675-104 C 105 1.0 µF 16V cer smd 510-3923-105 C 060 .1 µF ±10% X7R 25V cer smd 510-3675-104 C 106 1.0 µF 16V cer smd...
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PARTS LIST USER INTERFACE BOARD (VERSION C) Ref No. Description Part No. Ref No. Description Part No. CR 043 LED, green RG1101 smd 549-4003-011 R 014 220k ohm ±5% 1/16W smd 569-0165-224 CR 044 5.6V zener diode 523-2016-569 R 015 20k ohm ±1% 1/16W smd 569-0161-432 R 016...
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PARTS LIST USER INTERFACE BOARD (VERSION C) Ref No. Description Part No. Ref No. Description Part No. R 064 220k ohm ±5% 1/16W smd 569-0165-224 R 110 100k ohm ±5% 1/16W smd 569-0165-104 R 065 10k ohm ±5% 1/16W smd 569-0165-103 R 111 100k ohm ±5% 1/16W smd...
PARTS LIST USER INTERFACE BOARD (VERSION C) USER INTERFACE BOARD (VERSION A/B) Ref No. Description Part No. Ref No. Description Part No. R 162 470 ohm ±5% 1/16W smd 569-0165-471 U 009 A/D converter, 10 bit LTC1199 544-2031-005 R 163 470 ohm ±5% 1/16W smd 569-0165-471 U 010...
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PARTS LIST USER INTERFACE BOARD (VERSION A/B) Ref No. Description Part No. Ref No. Description Part No. C 015 .01 µF ±10% 10V cer smd 510-3681-103 C 064 .01 µF ±10% 10V cer smd 510-3681-103 C 016 .01 µF ±10% 10V cer smd 510-3681-103 C 065 .01 µF ±10% 10V cer smd...
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PARTS LIST USER INTERFACE BOARD (VERSION A/B) Ref No. Description Part No. Ref No. Description Part No. C 121 .01 µF ±10% 10V cer smd 510-3681-103 PC 001 PC board, user interface rev 10 035-5100-400 (-410 bd) C 131 .001 µF ±10% 10V cer smd 510-9227-102 PC board, user interface revision 1 035-5100-450 1...
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PARTS LIST USER INTERFACE BOARD (VERSION A/B) Ref No. Description Part No. Ref No. Description Part No. R 029 4.7k ohm ±5% 1/16W smd 569-0165-472 R 083 100k ohm ±5% 1/16W smd 569-0165-104 R 030 2k ohm ±5% 1/16W smd 569-0165-202 R 084 47k ohm ±5% 1/16W smd...
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PARTS LIST USER INTERFACE BOARD (VERSION A/B) Ref No. Description Part No. Ref No. Description Part No. R 137 220k ohm ±5% 1/16W smd 569-0165-224 R 247 100k ohm ±5% 1/16W smd 569-0165-104 R 138 220k ohm ±5% 1/16W smd 569-0165-224 R 248 82 ohm ±5% 1/16W smd...
PARTS LIST EXPLODED VIEWS MP107 MP108 MP106 HW101 MP105 MP006 A050 MP007 MP109 MP114 PC010 HW102 MP115 MP003 MP116 NP101 MP101 MP120 A040 (Complete Assembly) MP111 Front Cover Assembly 7-17...
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PARTS LIST EP101b MP104 EP102 R101 S101 PC040 MP040 Top Switch Assembly HW031 J030 CH030 MP035 A035 Rear Housing Assembly 7-18...
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PARTS LIST A050/A060 DS401 MP401 A400 Short Lead on Top A401 J8/J9 W101 ( - Case) W102 (+) MK101 MP110 SP101 NP102 HW103 MP113 MP112 W103/W104 EP031 7-19...
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PARTS LIST A200 MP032 MP030 Part of A200 Part of A200 EP030 MP033 MP031 A030 EP031 MP034 A100 7-20...
A400 USER INTERFACE A100 A215 LOGIC BOARD (UI) BOARD PC10 RF BOARD PC50 UDC Flex Flex Cir Circuit Opt Sel 1 D Out D Out HCNTL0 EB_A29 OPT_SEL1 Ext Spkr + D Out* D Out* HCNTL1 EB_A30 EXTSPKR_P Ext Mic EXT_MIC Sw B+ SW_BATT...
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VHF RF BOARD VER C LAYOUT Version C Board (see Section 1.13)
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NOTE: Individual replacement parts are not available for the RF board, so the entire board must be replaced if it is defective. VHF RF BOARD SCHEMATIC VER B (PAGE 1 OF 3) Version B Board (see Section 1.13) 8-10...
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VHF RF BOARD SCHEMATIC VER B (PAGE 2 OF 3) 8-11...
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VHF RF BOARD SCHEMATIC VER B (PAGE 3 OF 3) 8-12...
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TOP VIEW BOTTOM VIEW VHF RF BOARD VER B LAYOUT Version B Board (see Section 1.13) 8-13...
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ADSIC SW_VD5_0 6.8K C14 0.1uF VDDD VAGB C15 0.1uF VAGOb 0.22uF VDD1 C16 0.1uF VAGOm VDD2 C17 0.1uF VAGOs To RF Boar d VDD3 SW_VA5_0 C18 0.1uF 470pF VDDA C19 0.1uF VDDAb D Out* 5.1pF C21 0.1uF D Out 6.2pF 10pF V20b 270nH...
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5100-110 LOGIC BOARD VER A BOTTOM VIEW 5100-110 LOGIC BOARD VER A TOP VIEW Revision 7 Board, version w/o encryption module Version A Board (see Section 1.13) 8-45...
Tx Data/USB DP Rx Data/USB DM To Transceiver To Computer 232_EN Accessory Jack Serial Port PROGRAMMING CABLE SCHEMATIC Part No. 023-5100-920 5100 Test Cable Part No. 023-5100-940 Tx Data Rx Data To Computer DB9 F Pin Numbering To Transceiver Serial Port Accessory Jack RENA Ext Spkr -...
SECTION 9 OBSOLETE BOARD SCHEMATICS AND LAYOUTS A400 USER INTERFACE A100 A215 LOGIC BOARD (UI) BOARD PC10 RF BOARD PC50 UDC Flex Flex Cir Circuit Opt Sel 1 D Out D Out HCNTL0 EB_A29 OPT_SEL1 Ext Spkr + D Out* D Out* HCNTL1 EB_A30...
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ADSIC 6.8K VDDD 0.1uF VAGB 0.1uF VAGOb VDD1 0.1uF 0.22uF VAGOm VDD2 0.1uF VAGOs To RF Board VDD3 SW_VA5_0 0.1uF 470pF 0.1uF VDDA D Out* VDDAb 5.1pF 0.1uF D Out 6.2pF 10pF V20b 0.1uF 270nH Lock Det 390K V20m 0.1uF MMBV3401L /A V20s 4.7K...
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5100-110 LOGIC BOARD VER A BOTTOM VIEW 5100-110 LOGIC BOARD VER A TOP VIEW Version A Board (see Section 1.13) OBSOLETE VERSION Revision 5 Board...
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5100-160 LOGIC BOARD VER B BOTTOM VIEW 5100-160 LOGIC BOARD VER B TOP VIEW Version B Board (see Section 1.13) OBSOLETE VERSION Revision 2 Board, version with Motorola UCM 9-11...
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