B95-NL6000UHF /FM MODEM

  
  
  
    
 
      RF Neulink 2 NL6000 User Guide Copyright Copyright © 2003 by RF Neulink. This manual may be reproduced for distribution with the NL6000 as long as the manual remains intact, in its entirety, with all appropriate Copyright, Intellectual property, and Trademark notices. This product contains intellectual property and copyrighted material owned by RF Neulink. Unless expressly agreed to in writing, no one may copy, disassemble, or distribute in any form, any computer readable information contained within this product, and in particular information contained within the EEPROM, EPROM, or ROM memory circuits. All rights, title, and copyrights to the software or firmware in this product are owned by RF Neulink. NL6000 is a registered trademark of RF Neulink, a division of RF Industries. RF Neulink reserves all rights not expressly granted to the purchaser of this product.
R F Industries 7610 Miramar Road, San Diego, CA 92126 858.549.6340 [email protected] www.rfneulink.com RF Neulink 3 NL6000 User Guide Table of Contents 1. Product Overview ....................................................................................................... 6 1.1. Features ............................................................................................................. 7 2. Regulatory Information............................................................................................... 9 3. Specifications ............................................................................................................ 11 4. Hardware Installation and Operation ........................................................................ 13 4.1. Parts Description ............................................................................................. 13 4.2. Power Connections ......................................................................................... 13 4.3. Mounting Instructions ..................................................................................... 13 4.4. Serial Port........................................................................................................ 14 4.5. Antenna Connection........................................................................................ 15 4.6. LEDs ............................................................................................................... 15 4.7. Operation......................................................................................................... 15 4.8. Technical Support ........................................................................................... 16 5. Software Configuration............................................................................................. 17 5.1. Prerequisites .................................................................................................... 17 5.2. Preparation ...................................................................................................... 17 5.3. Unique Data Requirements for a Base Station ............................................... 18 5.4. Source and Destination Addressing ................................................................ 18 5.5. Behavior of Repeater Units............................................................................. 19 5.6. Packet Data Options........................................................................................ 22 5.6.1. Transmission Mode ........................................................................... 22 5.6.2. Maximum Packet Size....................................................................... 25 5.6.3. Over-the-Air Data Rates.................................................................... 25 5.6.4. Acknowledgements ........................................................................... 25 5.6.5. Carrier Sense Multiple Access .......................................................... 25 5.7. Serial Connection to an I/O Device ................................................................ 25 5.7.1. Basic Serial Parameters ..................................................................... 25 5.7.2. Flow Control...................................................................................... 26 5.7.3. DCD Mode ........................................................................................ 26 5.7.4. Pre- and Post-Data DCD Time .......................................................... 26 5.8. Planning the RF Channel ................................................................................ 27 5.9. Factory Default Parameters............................................................................. 27 6. Procedures................................................................................................................. 28 6.1. General Procedures ......................................................................................... 29 Entering Programming Mode ......................................................................... 29 Setting the Program Mode .............................................................................. 29 Saving Configuration Changes to Flash Memory........................................... 29 Saving Configuration Changes Temporarily .................................................. 29 Reverting to the Prior Configuration .............................................................. 29 Returning to the Previous Menu ..................................................................... 30 Displaying the Configuration Summary Window .......................................... 30 6.2. Radio Network Setup ...................................................................................... 31 Setting the Unit Type ...................................................................................... 31 Setting the Unit ID (MYID).....................…

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RF Board Block Diagram IC102 Q102 Q101 LNA Mixer I.F. Amp. Back-end Processor Squelch Amp. Discriminator Amp. RSSI DISC. OUT IC104 Q104 Q105 Q106 Q107 VCO VCO Buffers PA Drivers PA Q108 IC101 Q103 IC103 VCO MOD. MOD. IN X 3 Q112 Multiplier IC108 Synthesizer T/R Switch IC106 IC107 +5V +5V RX Voltage Regulator Reference Oscillator Y101 Antenna

S:\TimcoOffice\ReportTemplate\Probonholdemail.doc Rev 25 June03 Reply: From: M. Flom Associates, Inc. [[email protected]] Sent: Thursday, September 25, 2003 4:59 PM To: Gretchen Subject: Re: RF NEULINK - FCC ID: B95-NL6000 Job #1297UC3 Attached please find the signed project letter. The modulation available in this modem for running random data can only be obtained in the diagnostic mode. For the narrow band it is 12 kps (for 9.6 kps requirement) and 22.05 kps (for 19.2 kps). There is no PAM signal feeding the transmitter to deliver a 4-FSK output signal. 1) Hence under Rule 2.201, emission designator F1D applies. 2) Occupied Bandwidth plots on pages 21-23 and 35-37 are for 12.5 kHz spacing (12 kps); plots on pages 24, 29, 30, 44, and 49 are for 25 kHz spacing (22.05 kps). 3) Attached please find the Amended Test Report which includes the Transient Frequency Response test and results. 4) R.F. Exposure Safety Instructions: The device comes equipped with time-out timer to avoid damage. The 50% duty cycle statement is to caution the user. See the Instructions to Users and Installers at the end of the MPE Report. 5) User Manual: The statement you refer to us a repeat of the other warnings in the manual to again caution the user. 6) User Manual, R.F. Exposure: The test for R.F. Exposure was conducted at 20 cm as noted on page 7 in the MPE Report. 'General Population' requirements would imply that the transmitter met the SAR limits. Isn't that so? We trust the above meets the requirements. Regards, Mort Flom, P. Eng., President mf/cva M. Flom Associates, Inc. Confidential - The information in this message is only intended for the person(s) or organization(s) to whom it is addressed. If you are not that person, please contact the sender, and destroy this copy. S:\TimcoOffice\ReportTemplate\Probonholdemail.doc Rev 25 June03 TIMCO ENGINEERING INC. 849 NW State Road 45 Newberry, Florida 32669 http://www.timcoengr.com 888.472.2424 F 352.472.2030 email: [email protected] September 18, 2003 MR. MORTON FLOM M. FLOM ASSOCIATES, INC 480-926-3100 480-926-3598 [email protected] SUBJECT: RF NEULINK - FCC ID: B95-NL6000 REFERENCE: JOB 1297UC3 Dear Mort, Questions: 1. Necessary Bandwidth Calculation: Please explain how this number is derived from the Pulse Amplitude Modulated (PAM) signal feeding the transmitter that delivers a 4-FSK output signal. The emission designator is marked as F1D. 2. Occupied Bandwidth Plots: Is the plot marked “random data” running at maximum data rate? Part 90.203(j) states: “...the equipment must be capable of supporting a minimum data rate of 4800 bits per second per 6.25 kHz of channel bandwidth.” Please verify and state the EUT complies with this requirement for the 12.5 and 25 KHz bandwidths. 3. Transient Frequency Response: Part 90.214 calls for Transient Frequency Response Plots. Please submit. (none were found) 4. User Manual: RF Exposure Safety Instructions: For what reason is the 50% duty cycle statement listed? 5. User Manual: RF Exposure Safety Instructions: The statement “RF Exposure compliance must be addressed at the time of installation.” Does this statement apply when it is stated to maintain a 20cm separation distance from the antenna? 6. User Manual: RF Exposure Safety Instructions: In the section called “Warning” it states: “....the requirements of Occupational/Controlled Exposure Environment, etc....” This EUT meets the “General Population” requirements, as it should. Should this statement be changed to “General Population,” etc? Sincerely, S:\TimcoOffice\ReportTemplate\Probonholdemail.doc Rev 25 June03 Gretchen Torres S:\TimcoOffice\ReportTemplate\Probonholdemail.doc Rev 25 June03

THEORY OF OPERATION RF BOARD RECEIVER RF amplifier and bandpass filters. The incoming RF signal from the input connector J101 passes backwards through the transmitter lowpass filter and the electronic T/R switch to a two pole bandpass filter formed around L101 and L102. This filter is of Cohn type with 1.5 dB insertion loss and a bandwidth of 25 MHz. This filter is followed by a low noise amplifier stage formed around Q101. This amplifier has a gain of about 17 dB with a noise figure of 2 dB and serves to amplify the incoming RF signal above the noise of the following stages. Following this stage is a four pole Cohn filter formed around L103 through L106. This filter has an insertion loss of 4 dB and a bandwidth of 25 MHz. The two filter sections are narrow enough to filter out the spurious responses of the first mixer while wide enough to support a performance bandwidth of 20 MHz. 1 st mixer, 1 st IF filters, and 1 st IF amplifier. IC101 is an active double balanced mixer which converts the incoming RF signal to the first intermediate frequency (IF) of 43.65 MHz. This mixer has a gain of 0 dB and a noise figure of 10 dB. Its differential output is matched to the first IF filter, YF101, by L107, L108, C128, and C137. An IF amplifier based around Q102 is used to provide gain. Its output drives another IF filter section, YF102, which is identical to YF101. These two filters serve the double function filtering out the spurious responses of the second mixer and, with the second IF filter, of removing signals at the adjacent and further removed channels. 2 nd IF IC The output of YF102 drives the mixer internal to IC102. IC102 is an integrated FM IF IC which contains a mixer, high gain limiting IF amplifier, FM discriminator (detector), and other support circuitry. The mixer in IC102 converts the RF signal at the first IF to the second IF of 450 kHz. The output of the mixer exits the IC and is filtered by the second IF filter, YF103. The output of the filter re-enters the IC and drives the high gain limiting amplifier. Because the discriminator inside IC102 is sensitive to both amplitude and frequency modulation components, a limiter must precede it to remove any amplitude modulation. In addition, the noise based carrier detection system available with this product requires that the RF signal at the discriminator stay constant in amplitude as the RF input signal level varies. The output of the limiter amplifier drives the discriminator. The resonator for the discriminator is YF104. Receiver audio and carrier detection The recovered audio from pin 9 of IC102 is filtered and DC shifted by IC103A and associated components. IC103B is a simple inverter and is used to provide inverted audio for those applications which may require it. Two methods of carrier detection are available on this radio. One is based upon the absolute RF signal level at IC102’s input and the other is based upon the magnitude of the ultrasonic noise on the recovered audio. IC102 has circuitry which develops a DC current which is proportional to the input RF signal level. Passing this current through a resistor (R115) creates a voltage which varies from about 0.5 volts at no signal input to about 3 volts with –70 dBm at the antenna connector. In addition, a voltage can be developed which is proportional to the amount of noise present on the recovered audio signal. This is effected by filtering the recovered audio such that only frequencies above the normal modulation range remain. This prevents modulation components from being detected as noise. The filter is formed around an op-amp internal to IC102 between pins 10 and 11 and the components connected to these two pins. The filtered output at pin 11 is rectified by Q103B and then filtered. The output varies from about 3 volts for a 0 dB SINAD signal to about 0.5 volts for a 20 dB SINAD signal. 2 nd local oscillator. The two mixers in this radio act to produce an output signal whose frequency is equal to the difference between the frequency present at the RF input port and the frequency at the local oscillator port. To convert signals at the first IF frequency of 43.65 MHz to that of the second IF at a frequency of 450 kHz, a local oscillator signal at a frequency of 43.2 MHz (43.65 – 0.45) is used. This signal is created by tripling the output of the radio’s 14.4 MHz master reference oscillator, Y101. Transistor Q112 acts as a frequency tripler. Its associated components are used to bias the transistor at an harmonic rich bias point and to filter the output such that only the third harmonic remains for use as the 2 nd local oscillator. VCO and Synthesizer The synthesizer is responsible for generating the carrier in transmit and the first local oscillator in receive. A voltage-controlled oscillator (VCO) is an oscillator whose frequency can be controlled by an external signal. The synthesizer, almost wholly contained within IC108, divides the VCO frequency by digital dividers and compares the result with an accurate reference. An error signal, proportional to the frequency error is created which is routed to the frequency control input of the VCO. This action locks the VCO to a frequency which is equal to the reference frequency multiplied by the divider number. To set the VCO frequency, different divider numbers can be programmed into the synthesizer. In most synthesizer designs, the divider must be an integer, which forces the reference frequency to be equal to the synthesizer step size. The synthesizer IC used in this radio, however, allows the use of non-integer values for the divider which in turn allows the reference frequency to be much higher than normal. This creates a synthesizer whose output has lower noise, lower spurious levels, and a higher switching speed s. The reference frequency is derived by digitally dividing the frequency of the 14.4 MHz master oscillator. When locked, the VCO attains the same relative frequency stability as that of the master oscillator. T…

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THEORY OF OPERATION Narrow Band Radio The VCO is modulated by a four level Pulse Amplitude Modulated (PAM) signal. The symbol rate is half the bit rate or 6,000 symbols per second. The modulating signal is Nyquist filtered with an excess bandwidth factor (alpha) of 0.7. The deviation for the four levels is -2500 Hz, -833 Hz, 833 Hz, and 2500 Hz. Data packets are prefaced by a 67 ms preamble. The preamble modulates the VCO with a 3000 Hz sine wave with 2.5 KHz peak deviation. Data in the packets is randomized using shift register feedback. Wide Band Radio The VCO is modulated by a four level Pulse Amplitude Modulated (PAM) signal. The symbol rate is half the bit rate or 11,025 symbols per second. The modulating signal is Nyquist filtered with an excess bandwidth factor (alpha) of 0.7. The deviation for the four levels is -4000 Hz, -1333 Hz, 1333 Hz, and 4000 Hz. Data packets are prefaced by a 36 ms preamble. The preamble modulates the VCO with a 5513 Hz sine wave with 4 KHz peak deviation. Data in the packets is randomized using shift register feedback

DTX-454 RF Board Semiconductor Parts List Ref. Des.Ritron P/NDescription Q1014821007YTransistor, NPN, RF, low noise, MMBR941 Q1024821003ETransistor, NPN, VHF, MMBTH10 Q103480A0001Dual Transistor, NPN, PNP, General Purpose Q1044821007ZTransistor, NPN, RF, low noise, MMBR951 Q1054821007YTransistor, NPN, RF, low noise, MMBR941 Q1064821007YTransistor, NPN, RF, low noise, MMBR941 Q1074821007YTransistor, NPN, RF, low noise, MMBR941 Q1084821007YTransistor, NPN, RF, low noise, MMBR941 Q10948010R02Transistor, NPN w resistor, MUN2211 Q1104801006DTransistor, NPN w resistor, MUN2114 Q1114801001QTransistor, NPN, general purpose, MMBT5088 Q1124821003ETransistor, NPN, VHF, MMBTH10 Q1134801002ATransistor, NPN, general purpose, MMBT3906 Q11448010R02Transistor, NPN w resistor, MUN2211 Q1154801006DTransistor, NPN w resistor, MUN2114 Q1164801006DTransistor, NPN w resistor, MUN2114 Q1174801001QTransistor, NPN, general purpose, MMBT5088 CR10148D100A2Diode, PIN, MA4CP101A CR10248A1005CDiode, Dual, MMBD7000 CR10348A1005CDiode, Dual, MMBD7000 CR10448D100A2Diode, PIN, MA4CP101A CR10548C1004GDiode, Varactor, MMBV210 CR10648C10AQ1Diode, Varactor, SMV1236-001 CR10748A1004DDiode, PIN, MMBV3401 CR10848A1005CDiode, Dual, MMBD7000 CR10948B1008KDiode, Zener, MMBZ5235B IC10131510001IC, Monolithic Mixer, MC13143 IC10231030003IC, IF subsystem, MC3371 IC10331010008IC, Dual Op-amp, LM2904 IC10404801504Module, RF Power, M68732 IC10531127414IC, 7414 IC106310E0002IC, Voltage Regulator, LP2980 IC107310E0002IC, Voltage Regulator, LP2980 IC108313K0003IC, PLL Synthesizer, LMX2352 Y10123050003Module, 14.4 MHz Reference Oscillator

NEULINK NL6000-IP CONTROL/LOADER BOARD Revised: Wednesday, July 16, 2003 S2002001 Revision: A Bill Of Materials AUG 8,2003 DORR ENG Page1 Item Qty Reference Part DESCR MFR * MPN Qty/Unit 1 * substitution acceptable 2 3 C37,39,42 10pF CAP CER NPO 10pF 50V 5% 0603 BC Components * 0603N100J500NT 3 3 2 C119,120 15pF CAP CER NPO 15pF 50V 5% 0603 BC Components * 0603N150J500NT 2 4 2 C80,81 DNI-33pF CAP CER NPO 33pF 50V 5% 0603 Panasonic * ECJ-1VC1H330J 0 5 1 C74 47pF CAP CER NPO 47Pf 50V 5% 0603 BC Components * 0603N470J500NT 1 6 19 C5,25-27,29,31,32,35,36,38,43,44 100pF CAP CER NPO 100pF 50V 5% 0603 BC Components * 0603N101J500NT 19 7 45-47,49,50,500,501 8 3 C1,73,135 .001uF CAP CER X7R 1000pF 50V 10% 0603 Panasonic * ECJ-1VB1H102K 3 9 6 23,28,33,40,121,122 1500pF CAP CER NPO 1500pF 50V 5% 0805 Panasonic * ECJ-2VC1H152J 6 10 1 C48 .0047uF CAP CER X7R 4700pF 50V 10% 0603 BC Components * 0603B472K500BT 1 11 58 C3,9-12,54,58,59,6264,66,68, .1uF CAP CER X7R .1uF 25V 10% 0603 Panasonic * ECJ-1VB1E104K 58 12 70,72,77,79,83-111,123,124,126- 13 128,130-132,134,136-138 14 1 C51 .47uF CAP CER X5R .47uF 10V 10% 0603 Panasonic * ECJ-1VB1A474K 1 15 2 C24,34 1uf CAP CER X5R 1uF 16V 10% 0603 Panasonic * ECJ-1VB1C105K 2 1617 4 C30,41,55,82 1T/16 CAP TANT precision 1uF 16V 10% A Kemet * T491A105K016AS 4 18 8 C4,8,61,67,69,75,129,133 10T/16 CAP TANT precision 10uF 16V 20% A Kemet * T491A106M016AS 8 19 1 C71 10TL/16 CAP TANT LO ESR 10uF 16V 10% B Kemet * T494B106K016AS 1 20 1 C2 10T/25 CAP TANT precision 10uF 25V 10% C Kemet * T491C106K025AS 1 21 1 C65 22T/6.3 CAP TANT precision 22uF 6.3v 10% B Kemet * T491B226K006AS 1 22 1 C78 DNI-33T/10 CAP TANT LO ESR 33uF 10V 10% B Kemet * T494B336K010AS 0 23 1 C76 47T/6.3 CAP TANT 47uF 6.3V 20% B Kemet * T520B476M006AS 1 2425 1 F1 R451 005. FUSE "NANO" 5A SMD LITTELFUSE * R451 005. 1 26 2 JP7,8 CON HDR 2mm 2 PIN GOLD ADAMTECH * 2PH1-02UA 27 1 JP1 HDR15x1P CON HDR .100" 15 PIN GOLD .240" HIGH MOLEX * 22-28-4154 1 28 1 J1 CON14A CON HDR .100" 2X7 POS MOLEX * 90131-0767 1 29 1 J3 HDR-2x1 CON HDR .100" 2 PIN TIN R/A FRICTION LOCK MOLEX 22-05-3021 1 30 1 J4 HDR6x1P CON HDR 2mm 5 PIN TIN R/A POLARIZED HIROSE DF3A-5P-2DS 1 31 1 J2 CONN_USB CON USB TYPE B R/A PC MNT MOLEX * 67068-0000 1 32 1 P1 DB9F CON D-SUB FEMALE SOLDER CUP W/ TH INSERT Norcomp * 171-009-202-011 1 3334 18 L1,2,5-20 FB FERR BEAD 500mA 150 Ohm 0603 Steward * LI0603E151R-00 18 35 2 L3,4 10uH INDUCTOR 10uH SMD Coilcraft * 1812PS-103M 2 36 1 L21 100uH INDUCTOR 100uH SMD Coilcraft * 1812PS-104M 1 3738 8 JP2,5 0 RES 5% FILM 1/16 W 0 OHM 0603 Yageo * 9C06031A0R00JLHFT 8 39 R14,20,97,98,103,110 40 4 JP3,6,9,R48 DNI-0 RES 5% FILM 1/16 W 0 OHM 0603 Yageo * 9C06031A0R00JLHFT 0 41 2 R1,5 DNI-0HC RES 5% FILM 1/8 W 0 OHM 0805 Panasonic * ERJ-6GEY0R00V 0 42 2 R2,111 0HC RES 5% FILM 1/8 W 0 OHM 0805 Panasonic * ERJ-6GEY0R00V 2 4344 7 R28,29,37,105,106,107,108 100 RES 1% FILM 1/16 W 100 OHM 0603 Yageo * 9C06031A1000FKHFT 7 45 1 R60 5.11 RES 1% FILM 1/16 W 5.11 OHM 0603 Yageo * 9C06031A5R11FKHFT 1 46 4 R58,65,66,104 33.2 RES 1% FILM 1/16 W 33.2 OHM 0603 Yageo * 9C06031A33R2FKHFT 4 47 1 R75 51.1 RES 1% FILM 1/16 W 51.1 OHM 0603 Yageo * 9C06031A51R1FKHFT 1 48 4 R67,69,71,73 64.9 RES 1% FILM 1/16 W 64.9 OHM 0603 Yageo * 9C06031A64R9FKHFT 4 49 1 R4 174 RES 1% FILM 1/16 W 174 OHM 0603 Yageo * 9C06031A1740FKHFT 1 50 3 R25,27,100 330 RES 1% FILM 1/16 W 330 OHM 0603 Yageo * 9C06031A3300FKHFT 3 51 1 R30 619 RES 1% FILM 1/16 W 619 OHM 0603 Yageo * 9C06031A6190FKHFT 1 52 1 R3 845 RES 1% FILM 1/16 W 845 OHM 0603 Yageo * 9C06031A8450FKHFT 1 5354 1 R99 1K RES 1% FILM 1/16 W 1K 0603 Yageo * 9C06031A1001FKHFT 1 55 2 R78,59 1.5K RES 1% FILM 1/16 W 1.5K 0603 Yageo * 9C06031A1501FKHFT 2 56 1 R503 8.3K RES 1% FILM 1/16 W 8.3K 0603 Yageo * 9C06031A8301FKHFT 1 57 17 R17,18,23,24,31,43,44,51,52 10K RES 1% FILM 1/16 W 10K 0603 Yageo * 9C06031A1002FKHFT 17 58 54,55,56,76,112,113,114,115 59 1 R501 27K RES 1% FILM 1/16 W 27K 0603 Yageo * 9C06031A2702FKHFT 60 2 R34,35 15.0K RES 1% FILM 1/16 W 15.0K 0603 Yageo * 9C06031A1502FKHFT 2 61 1 R101 38.3K RES 1% FILM 1/16 W 38.3K 0603 Yageo * 9C06031A3832FKHFT 1 62 1 R500 47K RES 1% FILM 1/16 W 47K 0603 Yageo * 9C06031A4702FKHFT 1 63 8 R19,26,39,50,61-64 51.1K RES 1% FILM 1/16 W 51.1 K 0603 Yageo * 9C06031A5112FKHFT 8 64 4 R15,16,21,33 68.1K RES 1% FILM 1/16 W 68.1K 0603 Yageo * 9C06031A6812FKHFT 4 65 1 R53 80.6K RES 1% FILM 1/16 W 80.6K 0603 Yageo * 9C06031A8062FKHFT 1 6667 2 68 6 R68,70,72,74,77,109 100K RES 1% FILM 1/16 W 100K 0603 Yageo * 9C06031A1003FKHFT 6 6970 1 R36 105K RES 1% FILM 1/16 W 105K 0603 Yageo * 9C06031A1053FKHFT 1 71 1 R22 140K RES 1% FILM 1/16 W 140K 0603 Yageo * 9C06031A1403FKHFT 1 72 1 R46 169K RES 1% FILM 1/16 W 169K 0603 Yageo * 9C06031A1693FKHFT 1 73 1 R49 200K RES 1% FILM 1/16 W 200K 0603 Yageo * 9C06031A2003FKHFT 1 74 2 R79,45 301K RES 1% FILM 1/16 W 301K 0603 Yageo * 9C06031A3013FKHFT 2 75 1 R47 511K RES 1% FILM 1/16 W 511K 0603 Yageo * 9C06031A5113FKHFT 1 76 1 R32 560K RES 1% FILM 1/16 W 560K 0603 Yageo * 9C06031A5603FKHFT 1 77 1 R80 681K RES 1% FILM 1/16 W 681K 0603 Yageo * 9C06031A6813FKHFT 1 7879 2 At U23,U24 LIGHT PIPE BIVAR SLP3-350-100-R 2 80 1 U23 SM0807SBC-RP LED DUAL RED/GRN 0807 Bivar * SM0807BC-RP 1 81 1 U24 SM0807BC-A/G LED DUAL AMB/GRN 0807 Bivar * SM0807BC-A/G 1 82 1 D1 1N4001 DIODE RECTIFIER 1A SMB Diodes, Inc. * S1AB-13 1 83 1 D3 DNI-1N5818 DIODE SCHOTTKEY 30V 1A SMB Intern'l Rect. * STPS1L30U 0 84 3 D4,5,6 ZLLS400 DIODE SCHOTTKEY 40V 520mA SMD(SOD-323) ZETEX * ZLLS400 3 85 2 U30,31 TPC6201 IC MOS FET N CHAN DUAL SOT-23-6 TOSHIBA * TPC6201(TE85L) 2 86 1 U9 MIC29302BT_bom IC V REG HI CURR LDO 3A 3.3V TO-220 Micrel MIC29302BT 1 87 1 U11 LP2951ACMM IC V REG ADJ LDO 8-MSOP National LP2951ACMM 1 88 1 U16 TPS7301QD IC V REG ADJ LDO 8-SOIC TI TPS7301QD 1 89 1 U29 74AHCT541 IC OCTAL BUFF/DRVR 20-TSSOP TI SN74AHCT541PWR 1 90 2 U5,6 TLV2374 IC OP AMP QUAD R-R 14-TSSOP TI TLV2374IPW 2 91 1 U27 MAX3111E IC RS232 XCVR W/CAP 28-SOIC Maxim MAX3111EEWI 1 92 1 U36 MAX3311E IC RS232 XCVR …

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RF Neulink 46 NL6000 User Guide Appendix A – Diagnosing and Correcting Performance Problems Factory technicians use the procedures in this section for initial modem alignment. After installation, a qualified electronic technician can use these procedures to diagnose and correct performance problems. Only an electronic technician with training in RF radio alignment should perform these procedures. Always perform these procedures using calibrated test equipment. Use the following test equipment for these procedures [Clay, please check this list]: ∑ A calibrated service monitor (IFR) capable of generating and analyzing narrow- band FM signals in the frequency band of the radio being tested. ∑ DC power supply capable of supplying at least 1 amp of current at 10-12V DC. ∑ A computer terminal capable of 9600 Baud wired as a DTE. ∑ Oscilloscope with at least 5MHz bandwidth. ∑ Jumper cable to connect the modem PCB to the radio PCB, while performing the alignment. Setting the Power Value 1. Set the IFR to receive at the radio’s transmit frequency. 2. From the terminal emulator, enter programming mode. 3. Select the active channel for the radio as follows: ∑ Select Radio
Select Active Channel. ∑ Enter the active channel assignment for the radio. The value must be a number in the range 01 – 64. ∑ Press ESC to return to the Main Menu. 4. Select Diagnostics
Transmit Continuous Random Data. 5. Set the power value as follows: ∑ Select Power from the Diagnostics menu. ∑ While watching the power gauge, change the power value and check the gauge to see that the power value registers correctly. The value must be a number in the range 0 – 1023. 6. Select None from the Diagnostics menu to stop the data transmission. Setting the Frequency Trim (includes setting Power) The power setting affects the frequency trim in the NL6000, so part of setting the frequency trim is setting the power. 1. Set the IFR to receive at the radio’s transmit frequency. RF Neulink 47 NL6000 User Guide 2. From the terminal emulator, enter programming mode. 3. Select the active channel for the radio as follows: ∑ Select Radio
Select Active Channel. ∑ Enter the active channel assignment for the radio. The value must be a number in the range 01 – 64. ∑ Press ESC to return to the Main Menu. 4. Select Diagnostics



Transmit Continuous Random Data. 5. Set the power value as follows: ∑ Select Power from the Diagnostics menu. ∑ While watching the power gauge, change the power value and check the gauge to see that the power value registers correctly. The value must be a number in the range 0 – 1023. ∑ Press ESC to return to the Diagnostics menu. 6. Set the frequency trim as follows: ∑ Select Frequency Trim from the Diagnostics menu. ∑ While watching the Frequency Error gauge on the IFR, change the frequency trim value on the Frequency Trim window until the needle on the gauge is centered. 7. Select None from the Diagnostics menu to stop the data transmission. Setting the Deviation and Balance To properly set the deviation and balance, you must perform the following procedure twice – once near each “edge” of the transmit frequency band In this procedure, an edge is defined as approximately 2.5 MHz from one end of the band range. 1. From the terminal emulator, enter programming mode. 2. Select one “edge” of the transmit frequency as follows: ∑ Select Radio
Transmit Frequency for Active Channel. ∑ Enter a frequency that is on one “edge” of the frequency for the active radio channel. The value must be a number in the format nnn.nnnn. ∑ Press ESC to return to the Main Menu. 3. Set the IFR to receive at the transmit frequency you set in Step 2. 4. Select Diagnostics
Transmit 100 Hz Square Wave. 5. Set the balance value as follows: ∑ Select Balance from the Diagnostics menu. RF Neulink 48 NL6000 User Guide ∑ While watching the square wave on the IFR, enter 1-Increase Balance 0.125 dB or 2-Decrease Balance 0.125 dB until the corners of the wave are at a 90 ̊ angle. ∑ Press Ctrl-A or Ctrl-B to save the balance value as the first or second reference point. ∑ Press ESC to return to the Diagnostics menu. 6. Select None from the Diagnostics menu to stop the square wave. 7. Select Transmit Continuous Random Data from the Diagnostics menu. 8. Set the deviation value as follows: ∑ Select Deviation from the Diagnostics menu. ∑ While watching the deviation gauge on the IFR, enter 1-Increase Deviation 0.25 dB or 2-Decrease Deviation 0.25 dB until the deviation gauge measures 2.5 kHz for a low data rate or 4 kHz for a high data rate. ∑ Press Ctrl-A or Ctrl-B to save the deviation value as the first or second reference point. ∑ Press ESC to return to the Diagnostics menu. 9. Select None from the Diagnostics menu to stop the data transmission. 10. Repeat Steps 1-7 for the opposite “edge.” Setting the Receive Gain Use this procedure to set the receive packets at the best level for this modem. 1. From the terminal emulator, enter programming mode. 2. Enable the Receive Diagnostic Mode as follows: ∑ Select Diagnostics
Receive Diagnostic Mode. ∑ Select 1-Enable. ∑ Press ESC twice to return to the Main Menu. ∑ Select Exit to save the Receive Diagnostic Mode setting and enter operating mode. 3. Set up another modem to send data to the modem. The terminal emulator will dis…

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