User Manual
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| Document ID | 226395 |
| Application ID | k5Xl5o4ViAlEV+cOglkUYw== |
| Document Description | User Manual |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 57.76kB (721987 bits) |
| Date Submitted | 2002-02-15 00:00:00 |
| Date Available | 2002-04-29 00:00:00 |
| Creation Date | 2001-11-05 11:25:21 |
| Producing Software | Acrobat 4.05 Scan Plug-in for Windows |
| Document Lastmod | 2002-02-13 09:59:51 |
| Document Title | User Manual |
| Document Creator | Acrobat 4.05 Scan Plug-in for Windows |
fl . éESIntelliNet Peabody, MA 01960-1 315 USA Phone 978-535-7310 Fax 9786357313 InfoQaes-inlelllneteom SERVICE MANUAL MODEL 7085-UE Rev 1.0 April 16, 2001 TABLE OF CONTENS LSPECIFICATION ....... ...... . .......... .,..2 2. CONNECTIONS AND OPERATION.............. .......... . ..... ....... .......3 3. CIRCUIT DESCRIPTION ....... . ........ .. ...... ....... .. ..... ..........4-12 4. PERFORMANCE TEST AND ALIGNMENle 5. TEST EQUIPMENT CONFIGURATION ......... . ...... ....... . ...... 13 fi TRANShflTTER PERFORMANCE TEST ....... .. ....... ..... ....... 14-16 7. TROUBLESHOOTING ..... ........ . ....... ........ . ........ ........ ......17-19 8. PROGRAMMER INSTRUCTION. ....... ..... ...... 10-21 9. PARTS LIST ....... 22-34 . .. ...... 35-39 10. PRINT CIRCUIT BOARD LAYOUT llJ’ARl‘S ASSENEBLY..... ..... ..... ....... ....40—45 12. BLOCK DIAGRAM .......46 13. SWTICS DIAGRAM.... ........ n ............... 47 PAGE] GENERAL SPECIFICA'HONS POWER SOURCE ...............4......A......................+12VD.C.nominal(+10.8m+15.6V) TEMPERATURE RANGE STORAGE30°C maximum 40°C min 25“C nominnl ‘ OPERATING “60°C maximum 40°C min ANTENNA IMPEDANCE... FREQUENCY CONTROL. .. FREQUENCES OF OPERATION. ,..410MHZ—4401fl-IZ FREQUENCY TOLERANCE ANDSTABILITY ...tSPPM HIGH HU'MIDITY.... CHANNEL CAPABILITY NOMINAL DTMENSIONS.. .134 mm(L)X60 mm(W)X20 mmfl-l) ...190g RADIO DATA TRANSCEIVER NOMINAL PERFORMANCE PERFORMANCE SPECIFICATIONSW .. ..ETSI 300-113 RF OUTPUT POWER.. .5w/1w PROGRAMMABLE MODULATION TYPE ..FM 455KHZ CHANNEL SPACING............ TRANSMIT ATTACK TIME... CURRENT CONSUMPTION -. TRANSMIT RECEIVE . 125 KHZ ,25KHZ(PROGRANEVIABLE) .. <25 mS ,. .1500mA@5W, 800mA@1W .. ..85mA PAGE2 INTERC ONNECTIONS EXTERNM CONNECTIONS 1- 500 BNC SOCKET 2- 9WAY ‘ D ’ TYPE PLUGUSOI) D—TYPE RANGE 00Mv-2 SVP ow+sv +1P3 xv P. AL MODULATION INPUT ‘ __ ___ AFOUTPUT SMl'l' ENABLE POWER SUPPLY momma DETECT _+mmm flmo MAA DD. G: IS'HOR “CV mums NO GM DATAIN'PUT mummahmé fi 5 5‘ m “15 V/V V0 NW ._ mats Crystal XLeonnected to pin 1 of IC6, determines the second local oscillator frequency In this case the crystal has a frequency of44.545MHz The first IF signal is applied to the mixer and resultant frequency of 455KHz, is the difierence betweenthe IF signal and second local oscillator The 455KHz l'F signal is output from pin 3 and is applied to a 455K1-Iz band-pass filter, CFl(20/25 kHz channel spacing) or CF2 (12.5 kHz channel spacing). The selection of the filters is accomplished by diodes Dl3(input) and Dl4(output) whose bias is controlled by sofiware and applied to the diodes from pin 21 oflCSOl. The output ofCFl/CFZ is passed via pin 5 to a high gain“? amplifier coupledtc the adjustable quadrature detecmr T2 (pin 8).Any detected signal is produced at pin 9 of 106 and applied to the Receiver Audio Circuit and the Mute (Squelch) Circuit. Squelnh ( MUTE) Circuit The noise detect circuit in conjunction with 106 consists of diode D11 and RV2. Any noise signal is amplified “by ICE internal noise amplifier recfifiedby D11 .D11 Signal is applied to pin12 of 106i The squelch trigger output (pin 14,106) is applied to the pin 6 of J501. When noise is present, the voltage at pin 12 of ICS is less than 0.7V. The squelch trigger output is 0V(logic 0) It’s make pin 6 of 1501 open state. When no noise is present, the voltage at pin 12 of lCG exceeds 0.7v and pin 14 of 106 IS AT Svaogic 1) This make pin 6 ofJSOl short state Carrier Detect ACarrierDetect(h/IUTEDE'I'ECT)out:putisavailahleonpin60f1501 ‘ AF Output Low You Filter A low pass filter formed by 0134, 0135 and R82 removes any extraneous 455kHz energy from the AF output of the PM receiver chip (pin 9 of 106), \ ‘I'hefilteredsignalispassedtopinZUfJSOl. Microcontr’oller The PIC 16C57 microcontroller IC oonuols the pmgrammsble features and frequency synthesizer Data. PAGEll Programming Mode The programming mode allows the user to retrieve or program TX/RX frequencies, HI/LO power Setting and channel spacing when pin 9 of 1501 is set to ground. Programming mode will Inhibit , Serial communications can then be made in order to read/program the on- board EEPRQM ( 1C502 )which contains mdio- specific data. EEPROM Relevant channel information, such as Rx] Tx frequencies, is stored in the EEPROM( ICSOZ) which is a 93C46. This information may be programmed and erased via the D- type socket The EPROM has 1024 (8x128) capacity and is written serially. Power supply circuit The data radio is supplied with a nominal + 13.8V dc power supply input from external equipment which is filtered using C532 ,L501 and C533.This supply is converted into three separate voltage levels on the board using the switching transistor Q506 and associated components . The +13.8’Vdc supply and Q506 switching waveform are summed usingDSOB to supply a boosted voltage supply which is regulated at +16V using Zener diode D506 This supply is used as the supply for the tuning voltage for the VCOs. The +6V line is regulated by Zener diode D505 and filtered using 1503 and C538lThis +6V lineis fedtotheRFcircuitandisregulatedto+5Vusingmomgulatorsontheboard. The alignment and performance test procedures assume the use of the following equipment. Discrete test equipment Volt Meter Spectrum Analyser and notch filmflopfion) RF Power Mere; Coupler (ZOdB isolation) DC Power Supply, 0-lSV 2A min Oscilloscope, 20 MHz dual beam RF Frequency Counter, 100 kHz - 600 MHz AF Signal Generator 0 — 20 kHz RF Signal Generator SINAD Meter Modulation Meier Audio Power Meter PAGEIZ
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