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CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.

 

 
 

 

 

 

SM41

 

 

  NPX138 
  PANEL MOUNT RADIO      

 

 
 

 

INSTALLATION AND OPERATION MANUAL 

 

REV 4.00   November 10, 2003 

 

Northern Airborne Technology Ltd. 

1925 Kirschner Road 

Kelowna BC, Canada 

V1Y 4N7 

 

Telephone (250) 763-2232 

Facsimile (250) 762-3374 

 

Copyright 2003 by Northern Airborne Technology 

Содержание SM41

Страница 1: ...TD SM41 NPX138 PANEL MOUNT RADIO INSTALLATION AND OPERATION MANUAL REV 4 00 November 10 2003 Northern Airborne Technology Ltd 1925 Kirschner Road Kelowna BC Canada V1Y 4N7 Telephone 250 763 2232 Facsimile 250 762 3374 Copyright 2003 by Northern Airborne Technology ...

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Страница 3: ... VHF FM radio transceivers This equipment provides what is considered as supplemental communications and can be installed in an aircraft on a Non interference basis Installation should be performed using standard procedures applicable to aircraft radio installation to ensure that the newly installed equipment does not interfere with any other equipment in the aircraft This device complies with Par...

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Страница 5: ...al amendments In order to maintain the most accurate and up to date manual these amendments should be carried out immediately upon receipt and recorded on the following amendment record AMENDMENT RECORD Amendment Number Amendment Date Section s Changed Date Entered Entered By 1 Apr 19 04 2 2 Aug 19 04 2 3 Nov 22 04 2 4 Jun 10 05 1 3 Insert any Amendment Instruction sheets after this page ...

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Страница 7: ...NPX138N 070 Amendment Instructions 1 Remove Pages Replace With Pages 1 5 Rev 4 00 1 5 Rev 4 00 Amendment 4 3 3 and 3 4 Rev 4 00 3 3 and 3 4 Rev 4 00 Amendment 4 3 7 and 3 8 Rev 4 00 3 7 and 3 8 Rev 4 00 Amendment 4 3 11 and 3 12 Rev 4 00 3 11 and 3 12 Rev 4 00 Amendment 4 3 19 Rev 4 00 3 19 Rev 4 00 Amendment 4 2 Update the Amendment Record sheet at the front of the manual 3 Insert this page into ...

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Страница 9: ...OGY LTD The purpose of this amendment is to amend the cable and wiring specifications in line with Transport Canada requirements Amendment Instructions Remove Pages Replace With Pages 1 2 1 and 2 2 Rev 4 00 2 1 and 2 2 Rev 4 00 Amendment 3 2 Update the Amendment Record sheet at the front of the manual 3 Insert this page into the manual after the Amendment Record sheet page ii Manual Amendment ends...

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Страница 11: ...e faceplate drawing Amendment Instructions Remove Pages Replace With Pages 1 2 5 2 5 Amendment 2 Remove Drawings Section 2 Replace or add Drawings Section 2 2 NPX138 905 0 rev 1 40 NPX138 905 0 rev 1 50 Note Ensure that all drawings are inserted in the order shown on the latest drawing lists 3 Update the Amendment Record sheet at the front of the manual 4 Insert this page into the manual after the...

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Страница 13: ... 634 0 in the manual Amendment Instructions 1 Remove Page Replace With Page 2 5 rev 4 00 2 5 rev 4 00 Amendment 1 2 Remove Drawings Section 2 Replace or add Drawings Section 2 NPX138 634 0 rev 1 00 NPX138 634 0 rev 1 10 Note Ensure that all drawings are inserted in the order shown on the latest drawing lists 3 Update the Amendment Record sheet at the front of the manual 4 Insert this page into the...

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Страница 15: ... 5 Unit Nomenclature 1 4 1 5 1 Narrowband Capability 1 4 1 5 2 Options 1 4 1 5 3 Special Options 1 5 1 5 4 Voice Inversion Encryption 1 5 2 0 Installation 2 1 Introduction 2 1 2 2 Unpacking and Inspection 2 1 2 3 Installation Procedures 2 1 2 3 1 Warnings 2 1 2 3 2 Cautions 2 1 2 3 3 Notes 2 2 2 3 4 Cabling and Wiring 2 2 2 3 5 Antennas 2 3 2 3 6 Mechanical Mounting 2 4 2 3 7 Post Installation Che...

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Страница 17: ...lay Line 3 7 3 6 3 TX Display Line 3 7 3 7 Channel Editing 3 8 3 7 1 SELECT Switch 3 9 3 7 2 NEXT Switch 3 9 3 7 3 EDIT Switch 3 10 3 7 4 HELP Switch 3 10 3 8 Status Editing 3 10 3 8 1 NEXT and SELECT Switch Use 3 11 3 8 2 Status Edit Features 3 11 3 9 Tones 3 12 3 9 1 General 3 12 3 9 2 Tone Display and Selection 3 13 3 9 3 Turning Tones On and Off 3 15 3 10 Scanning 3 15 3 10 1 General 3 15 3 10...

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Страница 19: ...mit frequency and CTCSS tone and an alpha numeric identifier A SCAN function allows scanning of selected channels Transmit power of either 1 watt or 10 watts is selectable from the front of the NPX138 Simplex and semi duplex operations are available An optional guard receiver is available with some models DTMF encoding and direct keyboard entry can be effected by the use of the DTE12 an accessory ...

Страница 20: ...Tone capability 38 standard CTCSS tones Operating mode simplex or semi duplex 1 4 2 Receiver Channel increments 5 kHz 6 25 kHz Audio output 100 mW 600 Ω Bal Unbal Sensitivity Main 0 5 µV max 12 dB SINAD Guard 0 5 µV max 12 dB SINAD Spurious response rejection 70 dB Adjacent channel rejection NPX138 all models 70 dB min 25 kHz NPX138N all models Wideband 70 dB min 25 kHz Narrowband 60 dB min 12 5 k...

Страница 21: ...cted spurious emissions High power 64 dBc Low power 55 dBc Carrier frequency stability 0 0003 FM hum and noise ratio 40 dB AM hum and noise ratio 35 dB Distortion 4 1 4 4 Physical Specifications Height 1 88 inches 47 7 mm Overall depth 8 64 inches 219 5 mm Depth behind panel 7 66 inches 194 6 mm Width 5 75 inches 146 1 mm Weight 3 0 lbs 1 4 kg Mounting Std Dzus mounting 4 fasteners Connector type ...

Страница 22: ...tion it has the capability for narrowband selection in addition to wideband If this part of the name is blank the unit has wideband capabilities only NPX138 N 000 N Wideband and Narrowband modulation Blank Wideband modulation only 1 5 2 Lighting Power The digit in the first position of the unit suffix indicates the lighting power used NPX138 N 000 0 28 Vdc Lighting 1 14 Vdc Lighting 2 28 Vdc NVG N...

Страница 23: ...consult factory for details 7 Synthesized Guard Other Special options installed consult factory for details 1 5 4 Voice Inversion Encryption The digit in the third position of the unit suffix indicates whether voice inversion encryption is installed NPX138 N 000 0 No Encryption 1 Encryption End of section 1 0 Nov 10 2003 Page 1 5 ENG FORM 800 0106 DOT Amendment 4 Jun 10 2005 CONFIDENTIAL AND PROPR...

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Страница 25: ... Complete the warranty card information and send it to NAT when the installation is complete If you fail to complete the warranty card the warranty will be activated on date of shipment from NAT 2 3 Installation Procedures 2 3 1 Warnings IMPORTANT Do not bundle any lines from this unit with transmitter coax lines Do not bundle any logic audio or DC power lines from this unit with 400 Hz synchro wi...

Страница 26: ...g of the cables It can be a serious issue if the unit is installed with the cables so short that the unit cannot be removed without disassembly of the surrounding structures At least 30 cm 1 foot of free cable is recommended All wiring should be 22 AWG minimum except power and ground connections which must be 20 AWG or larger as indicated on the installation drawings Ensure that the ground connect...

Страница 27: ...or whole number multiples of the navigation or communications system wavelength Note Avoid any placement that puts antennas of like frequencies close together Bottom mounted antennas will perform best in flight but poorest on the ground during testing Antennas may be severely degraded by masking effects of the fuselage or stabilizers and generally give best performance when bottom mounted To reduc...

Страница 28: ...ost Installation Checks 2 3 7 1 Voltage resistance checks Do not attach the NPX138 until the following conditions are met Check the following a P101 pins 12 and 13 for 28 Vdc relative to ground b P101 pins 22 23 24 and 25 for continuity to ground below 0 5 Ω c Light voltage as per table below P101 Pin Voltage 28 Volt Models 11 28 Vdc 14 Volt Models 10 14 Vdc 5 Volt Models 10 5 Vdc Light Voltage En...

Страница 29: ...rious problem and should be investigated carefully or serious RFI and system interference as well as possible radio damage may result A VSWR measurement over 3 0 1 represents a significant loss in signal power to the antenna Check that forward power is to specifications over the frequency band of the radio 2 3 8 Post Installation EMI Test The purpose of this test is to identify any interference th...

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Страница 31: ...Confidential and Proprietary to NAT ...

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Страница 37: ...squelch open VOR ILS GS receivers should be set to the frequencies indicated and selected for display If possible set up a VOR ILS ramp test set on the frequencies indicated and adjust the output until the flags are out of view The transponder and encoder should be monitored with ramp test equipment If possible set the ADF to a nearby navigation station Modulate the NPX138 transmitter on the indic...

Страница 38: ...FR certified GPS to lose navigation capability while the NPX138 is transmitting providing that it recovers properly and promptly but it is not permissible for an IFR Approach certified GPS to be affected in the same way A complete discussion of all the standards of airworthiness to be applied in assessing EMI effects is beyond the scope of this document 5 Procedure A Operate the NPX138 transmitter...

Страница 39: ... spaces provided in the following chart Modulate the NPX138 transmitter on the following frequencies for at least 20 seconds Listen for any noise or detected audio signals on the VHF comm Example Bendix King KY 196A The first IF frequency is 11 4 MHz The L O is above the received frequency high side injection therefore the image frequency is 22 8 MHz above the selected frequency Set the KY 196A to...

Страница 40: ...frequency Choose one set in the localizer frequency range and one in the VOR frequency range Record these values in the spaces provided in the following chart Modulate the NPX138 transmitter on the following frequencies for at least 20 seconds Listen for any noise or detected audio signals on the receiver audio look for any movement of flags or needles on the navigation display FREQUENCIES RESULTS...

Страница 41: ...TS G S 1 NPX138 PASS FAIL 334 7 108 1 167 3500 FREQUENCIES RESULTS G S 2 NPX138 PASS FAIL 334 7 108 1 167 3500 NOTES Note For the following tests select frequencies at the top middle and bottom of the range of the NPX138 Frequency 1 ______________ Frequency 2 ______________ Frequency 3 ______________ E At a safe altitude engage the autopilot or stability augmentation system Modulate the NPX138 tra...

Страница 42: ...t least 20 seconds Observe any effect on the autopilot Repeat for each different system such as ILS 2 GPS FMS etc Observations G List the power plant fuel and other electric instruments in the chart provided and note any anomalies that occur while transmitting Assess the results STEP SYSTEM PASS FAIL NOTES 1 Xponder Encoder 2 ADF 1 2 3 VG 4 Compass 5 Directional Gyro 6 Oil Pressure 7 Fuel Pressure...

Страница 43: ...Approval Test Procedure Rev 1 10 Apr 19 2004 Page 7 of 7 E NG FORM 634 0100 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD STEP SYSTEM PASS FAIL NOTES NOTES End of Installation Approval Test Procedure ...

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Страница 47: ...Confidential and Proprietary to NAT ...

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Страница 49: ...have more than one function dependent on the operating mode of the radio For this reason they have multiple labels When the radio is in Normal mode EDIT switch in the center Off position use the top label and when the radio is in Edit mode either CH or ST use the bottom label 3 2 Initial Operation 3 2 1 Power up Help Turn the NPX on by rotating the main volume control clockwise away from the Off d...

Страница 50: ...tch located in the bottom left hand corner of the front panel When it is in the ID position as shown above the display shows the channel identifier or name When it is in the RX or TX position the display shows the respective receive or transmit information See section 3 6 for further details on the Channel Display The lower row of the display contains information related to specific radio function...

Страница 51: ...tor that displays the RX Receive status of the main receiver and the TX Transmit status of the radio When the radio is transmitting the LED will light green When the main receiver receives a signal the LED will light amber If the radio is idle not receiving or transmitting the LED will be dark The color coding used for these functions corresponds to standard aircraft FM radio conventions It is wor...

Страница 52: ...nob independently sets the guard RX volume In most models there is no Off detent position On most NPX models even with the guard RX volume set completely counterclockwise the operator will still hear activity on the guard channel at the preset minimum level The Guard Select switch marked GD1 GD2 on the faceplate selects the active guard channel For standard guard receiver modules x5x the first gua...

Страница 53: ... Engraved panel lines tie related Edit functions together See sections 3 7 and 3 8 for further details on editing 3 5 1 Channel Switch To scroll to the desired channel use the CHAN switch Momentarily press it to the right to increment by one channel and to the left to decrement by one channel Holding the switch in either the left or right position causes the radio to continue to change channels wi...

Страница 54: ...el Label Scan Flags The label for each channel is an alphanumeric name that may be up to 10 characters long The channel name has no effect on radio operation and is provided for operator convenience in identifying the selected channel The scan list flag indicates whether or not the radio monitors the channel during scanning The sc character means that the channel is in the scan list A dash indicat...

Страница 55: ... See section 3 9 for further details on tones 3 6 3 TX Display Line The TX line includes the channel number the transmit frequency and the transmit tone A typical TX line might look like this Channel TX Freq TX Tone When you key the microphone the radio will transmit an FM signal that has a carrier frequency equal to that of the transmit frequency of the displayed channel If the display shows the ...

Страница 56: ...n the GD TX position and the radio is in the Channel Edit mode For all other models editing of guard receive frequencies is not possible Only those frequencies the radio recognizes as valid are enterable and only in the fractional multiples allowed To edit channel information first use the DISP switch to select the data line you wish to edit ID RX or TX then enter Channel Edit mode To enter Channe...

Страница 57: ...4 5 6 or 7 in the 10 s of MHz position so the editor does not permit any other numbers during editing from the front panel FREQUENCY EDITING WHILE IN CHANNEL EDIT SELECT SELECT 1 5 4 3 2 6 7 8 9 0 When editing a channel ID label the editor adds the alphabetic characters and frequently used symbols to this circle that apply For example the blank visible as a flashing underline _ to show the cursor ...

Страница 58: ...hen the NPX radio is already on cycle the radio off and then back on again using the volume control or the external breaker The option for comprehensive help will re appear 3 8 Status Editing There is simply not enough room on the compact front panel of the NPX radio to fit a switch for every radio function The solution for this is the use of status lines to display and control features that do no...

Страница 59: ...is unused until the operator returns the radio to duplex mode POWER The NPX radio can transmit at either a HI 10 watt or LO 1 watt power setting Many radio station licenses have power restrictions at altitude and must be set to low TX power above 5 000 feet for legal operation This feature also helps prevent repeater interference at altitude and permit secure operations TONES Radio tones are selec...

Страница 60: ...ect a specific channel or set this option to PDC Power Down Channel PDC will cause the radio to power up on the last used channel 3 9 Tones 3 9 1 General The tone system used by the NPX radio is a Continuous Tone Coded Squelch System CTCSS as defined by an Electronic Industries Association EIA standard The radio adds these tones to the normal signal modulation such as voice to uniquely identify or...

Страница 61: ...e only three digits available on the radio to display this data so the radio truncates any decimal fraction on the display i e 103 5 Hz becomes 103 Although not displayed the radio uses the exact frequency EIA Codes 1 38 This is a number from 1 38 that identifies the tone in sequential order from lowest 67 0 Hz to highest 250 3 Hz Wulfsberg Codes WCODES These are sequential shifted OCTAL codes bas...

Страница 62: ... 1Z 103 5 13 15 1A 107 2 14 16 1B 110 9 15 17 2Z 114 8 16 18 2A 118 8 17 21 2B 123 0 18 22 3Z 127 3 19 23 3A 131 8 20 24 3B 136 5 21 25 4Z 141 3 22 26 4A 146 2 23 27 4B 151 4 24 28 5Z 156 7 25 31 5A 162 2 26 32 5B 167 9 27 33 6Z 173 8 28 34 6A 179 9 29 35 6B 186 2 30 36 7Z 192 8 31 37 7A 203 5 32 38 M1 210 7 33 41 M2 218 1 34 42 M3 225 7 35 43 M4 233 6 36 44 M5 241 8 37 45 M6 250 3 38 46 M7 Displa...

Страница 63: ...eeded only to open the repeater and serve no RX squelch function 3 10 Scanning 3 10 1 General Scanning is an automatic internal function that rapidly samples a selected group of channels It is very useful for checking radio traffic on one or more channels while still working a home or monitor channel When scanning is active the radio ignores all CTCSS Sub audible Tones It does not test for these c...

Страница 64: ...neled to the home channel for transmission If the radio is locked onto a channel transmission will occur on that channel From the SCAN status line the operator may select one of several pre defined modes that control how the radio will carry out the scanning function They are described in the following section 3 10 3 Scan Modes You can designate any NPX channel as a PRIORITY channel and or a LIST ...

Страница 65: ...n list That channel will remain out of the scan list until the operator disables the scan mode either by moving the scan switch back to NORM or by turning off the radio PRIORITY Scanning The radio scans the home channel plus one priority channel It will continue scanning the priority channel if it finds an active channel To avoid accidental duplication use the Status Edit mode to set the priority ...

Страница 66: ...uired for normal operation and is intended to aid in servicing and radio set up Various firmware functions of the radio can be set via this mode Entering this mode requires a special code and switch sequence and should be USED ONLY AT THE FACTORY OR BY QUALIFIED SERVICE PERSONNEL 3 12 1 Using Configuration Mode WARNING Incorrect Use Of This Mode May Render The Radio INOPERABLE Use This Function Wi...

Страница 67: ...WER UP ON OFF Determines whether or not the radio status lines are displayed on power up EXT DATA PAD ON OFF Determines whether or not the radio will accept data from an external data entry pad LOWEST FREQ 138 150 Sets the lower limit in MHz for frequency editing All NPX138 radios can be selected to either option CHANS INST 20 40 60 80 100 The number of channels available in the radio Does NOT inc...

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