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Table of Contents
Related Manuals for Maxon SD-171E
Summary of Contents for Maxon SD-171E
- Page 1 - 1 - SD-171E / SD-174E Data Radio Service Manual...
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Page 2: Amendment Record Sheet
Service Manual SD170E Series Amendment Record Sheet All amendments to this manual should be incorporated as soon as they are received and recorded below: Issue No. Effective Reason for Change Date Signature Date All Engineering Bulletins relevant to this product should be placed at the rear of this binder. Please ensure that this manual is updated with any replacement pages, which may accompany these Engineering Bulletins. -
Page 3: Warnings
Service Manual SD170E Series Warnings NEVER connect the transceiver to a power source of more than 13.8V. NEVER dispose of the battery in fire – it can explode causing personal injury. NEVER attempt to disassemble the battery or remove its case material or charging contacts. -
Page 4: Table Of Contents
Service Manual SD170E Series Contents Amendment Record Sheet......................2 Warnings ............................. 3 Contents ............................4 Introduction ..........................5 Pre-Install check, Accessories & Options ..................6 Pre-Installation ................Error! Bookmark not defined. Accessories ................Error! Bookmark not defined. Options ............................ 6 Product Introduction ........................ -
Page 5: Introduction
SD170E Series Introduction This Maxon Product Manual is a comprehensive guide to the maintenance and field repair of this equipment. It covers all versions of the SD170E Series data radio(s). Before using this manual please read the whole of this introductory chapter, this will help you to make the best use of it. If you have not done so already, please also read the warnings immediately in front of this chapter before proceeding any further. -
Page 6: Pre-Install Check, Accessories & Options
Service Manual SD170E Series Pre-Install check, Accessories & Options Programmer ACC-916E SD-170E Series Programming software allows frequencies and features to be changed. ACC-2016E USB programming cable Service ACC-516 Extender PCB Allows RF PCB to be spaced off of the Digital PCB to facilitate Alignment procedures. -
Page 7: Product Introduction
Service Manual SD170E Series Product Introduction The SD-170E Series (here in after called “the radios”) of RF wireless modems from MAXONCIC utilize the latest technology in its design and manufacturing. Both the UHF and VHF models are Phase Lock Loop Synthesizer (PLL) / microprocessor controlled and offer five watts of power with 16-channel capability. -
Page 8: Installation
Service Manual SD170E Series Installation Installation The SD-170E Series Radio Modems usually requires mounting in a suitable location. Attention should be given to the heat sinking of the radio if prolonged transmission is required, see Section 2, which also includes details of the mounting hole dimensions. Note: Continuous transmission is not possible at high power (5W) without a suitable heat sink. -
Page 9: General Specification
Service Manual SD170E Series General Specification Equipment Type Data radio (Wireless Modem) Data radio (Wireless Modem) Model Series SD-171E SD-174E Performance TIA/EIA-603 /ETS 300-113 TIA/EIA-603 /ETS 300-113 Specifications Frequency Range 142-174MHz 450-490MHz RF Output 1-5W 1-5W Channel Spacing 12.5KHz, 25KHz Programmable... -
Page 10: Transmitter Specification
Service Manual SD170E Series Transmitter Specification Model Series SD-171E SD-174E Carrier Power (Nom. Max. Min.) 5W < 6W > 4.5W 5W < 6W > 4.5W Hi Power 1W<1.5W>0.8W 1W<1.5W>0.8W Low Power Sustained Transmission Time : 5 10 30 Sec Power : >90% >85% >80% Power : >90% >85% >80%... -
Page 11: Receiver Specification
Service Manual SD170E Series Receiver Specification Model Series SD-171E SD-174E Sensitivity (@ 12dB SINAD) 25 KHz Channel Spacing < 0.28uV < 0.28uV 12.5 KHz Channel Spacing < 0.30uV < 0.30uV Sensitivity (1/100 Error Rate) With ACC-513 < -113dBm < -113dBm With ACC-514 <... -
Page 12: Reference Crystal
Service Manual SD170E Series Reference Crystal SD-171E Model Series SD-174E 12.8 MHz Frequency DV-5-2.5H1 Type Temperature ±2.5 ppm from -30° C to +60° C Characteristic < 2 ppm/ year in 1st year Aging Rate < 1 ppm/ year thereafter Enviromental... -
Page 13: Features
Service Manual SD170E Series Features 16 Channels The SD-170E Series radio can store up to 16 channels within the same band. These channels can be selected by inner DIP-S/W or serial command inputted from external control system. Channel Spacing The SD-170E Series is capable of programmable channel spacing, in both UHF and VHF bands. Each channel can be programmed via the PC programmer, ACC-916E, having 12.5 kHz or 25 kHz channel spacing. - Page 14 Dealer programs this feature as ON or OFF. Squelch Options Compared to existing Maxon data radios, programmable sub-audio squelch system (CTCSS & DCS) and two-tone squelch system are newly added. Each channel will have these squelch option sets during dealer programming. More detail descriptions for all available squelch systems...
- Page 15 Service Manual SD170E Series Sub-audio squelch system The SD-170E Series can operate singly or with optional modem boards. Even if user wants to use sub-audio SQ system, the radio will permit this SQ option according to some cases to avoid confliction between sub-audio and data.
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Page 16: Access To Digital And Rf Boards
Service Manual SD170E Series Access to digital and RF boards Removing top cover Disassembly and Re-assembly of the Radio In order to carry out the following Test and Alignment procedures it will be necessary to gain access to the inside of the radio. Care should be exercised when opening up the radio for maintenance or repair. - Page 17 Service Manual SD170E Series Removing Screen 4. Remove the screen by carefully desoldering the screen from the RF board near to the BNC connector. Figure -4 Removing Screen 5. Then lift screen out. Page 17 of 44...
- Page 18 Service Manual SD170E Series REMOVING & REPLACING THE RF BOARD 6. Unscrew the four holding screws from the RF board. 7. De-solder the RF lead at the BNC connection Page 18 of 44...
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Page 19: Alignment
Service Manual SD170E Series Alignment Transmitter Alignment Connect the unit to a Service Monitor with the power meter set to the 10 W scale (or auto range). Refer to figure 4.4 under commissioning section TCXO Set the channel selector to the mid-range frequency 460MHz (U2) and 155MHz (V2), adjust TCXO1 for a reading accurate to within ±200Hz. - Page 20 Service Manual SD170E Series Sweep the audio frequency from 300 Hz to 4 kHz and ensure that the peak deviation does not exceed the limits shown below. If necessary adjust RV2 to vary audio deviation. 12.5 kHz channel spacing <= 2.5 kHz dev. 20 kHz channel spacing <= 4 kHz dev.
- Page 21 Service Manual SD170E Series Adjust the RF output level of the RF signal generator to –47dBm and connect to the radio. Monitor the output on the audio output pin and adjust RV401 for the specific audio output level. LEVEL SHIFTER for Modem option Board (ACC-513E, ACC-514E) Prepare a suitable GMSK or FFSK test signal and apply to the test set (or use a tested radio and transmit via an antenna with the same frequency and channel spacing).
- Page 22 Service Manual SD170E Series Squelch open (un-mute) at -114 to -113dBm (0.45 - 0.5mV of the RX signal strength) Squelch close (mute) at -117 to -116dBm (0.3 - 0.35mV of the RX signal strength) Changing the default squelch settings requires use of the programming cable and software. Those are designed for use not only as part of the programming kit but also as a tool of squelch level setting.
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Page 23: Alignment Points
Service Manual SD170E Series Alignment points Alignment Points Diagrams Page 23 of 44... -
Page 24: Flow Diagrams
Service Manual SD170E Series Flow Diagrams RF Board Audio Amp. & Filter Audio In RSSI IF IC Pre-emphasis SA605DK Pre-Selector Level Detector High : Audio In Low : No Audio LM386 Mod Out Audio Out 300Hz HPF Data BPF 300Hz HPF Audio Amp. - Page 25 Service Manual SD170E Series RF Board Data In RSSI IF IC SA605DK Pre-Selector Level Audio In Detector High : Audio In Low : No Audio Mod Out Audio Out 30Hz ~ 5KHz Data BPF 4th Order Analog S/W Analog S/W MC14053B MC14053B Sub-Audio LPF...
- Page 26 Service Manual SD170E Series RF Board Data In RSSI IF IC SA605DK Pre-Selector Level Audio In Detector High : Audio In Low : No Audio Mod Out Audio Out 30Hz ~ 5KHz Data BPF 4th Order Analog S/W Analog S/W MC14053B MC14053B Sub-Audio LPF...
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Page 27: Ctcss
Service Manual SD170E Series CTCSS CTCSS signal information Each channel supports the 38 TIA/EIA standard tone frequencies and 11 non-standard tones. All tones will be set up during dealer programming. Freq. Freq. Freq. Freq. Freq. (Hz) (Hz) (Hz) (Hz) (Hz) 67.0 97.4 136.5... -
Page 28: Modem Options
Moreover, if inputted data is filtered by audio filter circuit to avoid this problem, some of that will be broken. Therefore, to get over these problems and provide maximum flexibility, Maxon prepares FFSK (Fast Frequency Shift Keying) internal option-board. -
Page 29: Interfacing
Service Manual SD170E Series Interfacing External connections Connection is made to the SD170E via an external 50 ohm BNC socket (RF signal) and a high density 15-way “D”-type socket (DB-15 connector; control and data signals) with 4-40 UNC threaded jack posts for more permanent connection. Besides, DB-15 Pin includes “Power”. - Page 30 Service Manual SD170E Series Audio Audio output from the audio 1KHz audio at 60% Speaker filtered amplifier. peak system It‟s filtered by tone-filter, de- deviation produces emphasis circuit. Nominal 1Vrms @ 8Ω The Serial data to be transmitted is input to this pin. It‟s only available Serial data IN when option modem board is for option...
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Page 31: Channel Selection
Service Manual SD170E Series Channel Selection Setting of channel selector switch for each channel ACC-513 (GMSK Modem option board) Connector Input/ Function Description Output 6V to 12V Power Input Ground Signal from the digital board to enable transmitter circuit of modem board. TXD_EN It ensures that the radio has stabilized in transmission before the data is processed for... - Page 32 Service Manual SD170E Series CMD_IN/OUT Data Input and Output for Modem programming. I/P, CMD_CLK Clock Input for Modem programming. MODEM_SEL It Indicates modem type to Master MCU for programming. RX_IN The GMSK signal input for the receiver of modem IC. TX_OUT The GMSK filtered TX output signal.
- Page 33 Service Manual SD170E Series CMD_EN It indicates that command for Modem programming is effective. CMD_IN/OU Data Input and Output for Modem programming. I/P, CMD_CLK Clock Input for Modem programming. MODEM_SE It Indicates modem type to Master MCU for programming. RX_IN The FFSK/MSK signal input for the receiver of modem IC.
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Page 34: Sd174E Layouts Control Board
Service Manual SD170E Series SD170E Series Layouts Control Board Page 34 of 44... - Page 35 Service Manual SD170E Series Control Board bottom Reference Page 35 of 44...
- Page 36 Service Manual SD170E Series Page 36 of 44...
- Page 37 Service Manual SD170E Series SD171E Layouts RF Board RF Board top reference RF Board Top Reference Page 37 of 44...
- Page 38 Service Manual SD170E Series RF Board bottom Reference Page 38 of 44...
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Page 39: Sd174E Layouts Rf Board
Service Manual SD170E Series SD174E Layouts RF Board RF Board top reference RF Board top reference Page 39 of 44... - Page 40 Service Manual SD170E Series RF Board bottom Reference Page 40 of 44...
- Page 41 Service Manual SD170E Series SD170E Series Control Schematic Page 41 of 44...
- Page 42 Service Manual SD170E Series SD171E RF Schematic Page 42 of 44...
- Page 43 Service Manual SD170E Series SD174E RF Schematic Page 43 of 44...
- Page 44 Service Manual SD170E Series Page 44 of 44...