Maxon sd170e Manuel de service

- 1 - SD-171E / SD-174E Data Radio Service Manual

Service Manual SD170E Series Page 10 of 44 Transmitter Specification VHF UHF Model Series SD-171E SD-174E Carrier Power (Nom. Max. Min.) Hi Power L

Service Manual SD170E Series Page 11 of 44 Receiver Specification VHF UHF Model Series SD-171E SD-174E Sensitivity (@ 12dB SINAD) 25 KHz Channel Sp

Service Manual SD170E Series Page 12 of 44 Reference Crystal VHF UHF Model Series SD-171E SD-174E Frequency 12.8 MHz Type DV-5-2.5H1 Temperature Ch

Service Manual SD170E Series Page 13 of 44 Features 16 Channels The SD-170E Series radio can store up to 16 channels within the same band. These cha

Service Manual SD170E Series Page 14 of 44 CTCSS / DCS Scanning To help to block out unwanted calls to your radio, the SD170E series can be programm

Service Manual SD170E Series Page 15 of 44 Sub-audio squelch system The SD-170E Series can operate singly or with optional modem boards. Even if use

Service Manual SD170E Series Page 16 of 44 Access to digital and RF boards Removing top cover Disassembly and Re-assembly of the Radio In order to

Service Manual SD170E Series Page 17 of 44 Removing Screen 4. Remove the screen by carefully desoldering the screen from the RF board near to th

Service Manual SD170E Series Page 18 of 44 REMOVING & REPLACING THE RF BOARD 6. Unscrew the four holding screws from the RF board. 7. De-

Service Manual SD170E Series Page 19 of 44 Alignment Transmitter Alignment Connect the unit to a Service Monitor with the power meter set to the 10

Service Manual SD170E Series Page 2 of 44 Amendment Record Sheet All amendments to this manual should be incorporated as soon as they are received a

Service Manual SD170E Series Page 20 of 44 Sweep the audio frequency from 300 Hz to 4 kHz and ensure that the peak deviation does not exceed the lim

Service Manual SD170E Series Page 21 of 44 Adjust the RF output level of the RF signal generator to –47dBm and connect to the radio. Monitor the out

Service Manual SD170E Series Page 22 of 44 Squelch open (un-mute) at -114 to -113dBm (0.45 - 0.5mV of the RX signal strength) Squelch close (mute) a

Service Manual SD170E Series Page 23 of 44 Alignment points Alignment Points Diagrams AAAllliiigggnnnmmmeeennnttt pppoooiiinnnttt

Service Manual SD170E Series Page 24 of 44 Flow Diagrams Audio signal flow in TransmitterPre-emphasisAudio Amp. & FilterLevel Detector300Hz HPF

Service Manual SD170E Series Page 25 of 44 Ext. Mod. signal flow in TransmitterLevel DetectorAnalog S/WMC14053BData BPFSub-Audio LPFMF6Z1ZY1YAdj. Le

Service Manual SD170E Series Page 26 of 44 Ext. Mod. signal flow in TransmitterLevel DetectorAnalog S/WMC14053BData BPFSub-Audio LPFMF6Z1ZY1YAdj. Le

Service Manual SD170E Series Page 27 of 44 CTCSS CTCSS signal information Each channel supports the 38 TIA/EIA standard tone frequencies and 11 non

Service Manual SD170E Series Page 28 of 44 Modem Options Modem Option for data communication ACC-513E and ACC-514E are new kinds of internal option-

Service Manual SD170E Series Page 29 of 44 Interfacing External connections Connection is made to the SD170E via an external 50 ohm BNC socket (RF s

Service Manual SD170E Series Page 3 of 44 Warnings 1. NEVER connect the transceiver to a power source of more than 13.8V. 2. NEVER dispose of t

Service Manual SD170E Series Page 30 of 44 9 Speaker filtered OUT Audio output from the audio amplifier. It‟s filtered by tone-filter, de-emphasis c

Service Manual SD170E Series Page 31 of 44 Channel Selection Setting of channel selector switch for each channel ACC-513 (GMSK Modem option board

Service Manual SD170E Series Page 32 of 44 10 CMD_IN/OUT Data Input and Output for Modem programming. I/P, O/P 11 CMD_CLK Clock Input for Modem prog

Service Manual SD170E Series Page 33 of 44 9 CMD_EN It indicates that command for Modem programming is effective. I/P 10 CMD_IN/OUT Data Input and O

Service Manual SD170E Series Page 34 of 44 SD170E Series Layouts Control Board Control Board Top Reference

Service Manual SD170E Series Page 35 of 44 Control Board bottom Reference

Service Manual SD170E Series Page 36 of 44

Service Manual SD170E Series Page 37 of 44 SD171E Layouts RF Board RF Board top reference RF Board Top Reference

Service Manual SD170E Series Page 38 of 44 RF Board bottom Reference

Service Manual SD170E Series Page 39 of 44 SD174E Layouts RF Board RF Board top reference RF Board top reference

Service Manual SD170E Series Page 4 of 44 Contents Amendment Record Sheet...

Service Manual SD170E Series Page 40 of 44 RF Board bottom Reference RF Board bottom Reference

Service Manual SD170E Series Page 41 of 44 SD170E Series Control Schematic

Service Manual SD170E Series Page 42 of 44 SD171E RF Schematic

Service Manual SD170E Series Page 43 of 44 SD174E RF Schematic

Service Manual SD170E Series Page 44 of 44

Service Manual SD170E Series Page 5 of 44 Introduction This Maxon Product Manual is a comprehensive guide to the maintenance and field repair of thi

Service Manual SD170E Series Page 6 of 44 Pre-Install check, Accessories & Options Programmer ACC-916E SD-170E Series Programming software

Service Manual SD170E Series Page 7 of 44 Product Introduction The SD-170E Series (here in after called “the radios”) of RF wireless modems from MA

Service Manual SD170E Series Page 8 of 44 Installation Installation The SD-170E Series Radio Modems usually requires mounting in a suitable location

Service Manual SD170E Series Page 9 of 44 General Specification VHF UHF Equipment Type Data radio (Wireless Modem) Data radio (Wireless Modem) Mode