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NPX138 Panel Mount Radio Manual

SM41 Rev. 4.00

1.4

Specifications

1.4.1

Electrical Specifications

Input power

28 Vdc nominal

Current consumption

0.5 A receive/2.0 A transmit (typical)

0.8 A receive/3.0 A transmit (max.)

Panel lighting

28 Vdc, 14 Vdc or 5 Vdc dependent on model.

Sidetone output

25 mW @ 600

Ω

, adjustable.

Microphone

Amplified Dynamic or equivalent, 150

Ω

balanced/unbalanced

Frequency range

138.000 MHz to 173.995 MHz

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

V max. @ 12 dB SINAD

Guard

0.5

V 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 kHz

Intermodulation rejection

70 dB

Hum and Noise ratio

Unsquelched

> 50 dB

Squelched

< -80 dBw

Distortion

< 4% @ rated output

Page 1-2

Nov 10, 2003

ENG-FORM: 800-0106.DOT

CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.

Содержание NPX138

Страница 1: ...D 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 Facsim...

Страница 2: ...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 usi...

Страница 3: ...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 Amendm...

Страница 4: ...ay 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...

Страница 5: ...Installation drawing Amendment Instructions 1 Remove Pages Replace With Pages Title Page Title Page 2 5 Rev 4 00 Amendment 2 2 5 Rev 4 00 Amendment 3 2 Remove Drawing Section 2 Add Drawing Section 2 N...

Страница 6: ...urpose of this amendment is to update sections 2 3 4 2 3 5 and 2 3 6 Amendment Instructions 1 Remove Pages Replace With Pages 2 1 and 2 2 Rev 4 00 Amendment 3 2 1 and 2 2 Rev 4 00 Amendment 5 2 3 and...

Страница 7: ...PX138N 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 0...

Страница 8: ...GY 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...

Страница 9: ...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 5...

Страница 10: ...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 NPX...

Страница 11: ...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 Inspect...

Страница 12: ...ay 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...

Страница 13: ...it 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...

Страница 14: ...one 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 Bal Unbal Sensitivity Main 0 5 V max 12 dB SINAD G...

Страница 15: ...d 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...

Страница 16: ...ion 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 B...

Страница 17: ...onsult 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...

Страница 18: ...d 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...

Страница 19: ...t 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 reco...

Страница 20: ...imum of 12 ft from aircraft navigation receiver antennas and a minimum of 4 feet from aircraft communications and ELT antennas Be careful not to choose separations that closely approximate or whole nu...

Страница 21: ...ble connections to each unit 2 3 7 Post 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...

Страница 22: ...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 sig...

Страница 23: ...Confidential and Proprietary to NAT...

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Страница 26: ...quelch 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...

Страница 27: ...R 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 affect...

Страница 28: ...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 Bendi...

Страница 29: ...requency 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 fol...

Страница 30: ...S 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...

Страница 31: ...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 pr...

Страница 32: ...pproval 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 Ap...

Страница 33: ......

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Страница 35: ...ave 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 la...

Страница 36: ...ch 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 displ...

Страница 37: ...or 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...

Страница 38: ...ob 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 a...

Страница 39: ...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 p...

Страница 40: ...l 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...

Страница 41: ...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 T...

Страница 42: ...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 enterab...

Страница 43: ...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...

Страница 44: ...en 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...

Страница 45: ...s 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 a...

Страница 46: ...ct 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 Cont...

Страница 47: ...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 frequ...

Страница 48: ...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 16...

Страница 49: ...eded 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 use...

Страница 50: ...eled 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 mod...

Страница 51: ...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 scan...

Страница 52: ...ired 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 se...

Страница 53: ...ER 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...

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