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NORMARC NM 7000 Series Installation & Commissioning Handbook

Instrument landing system
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NORMARC 7000
INSTRUMENT LANDING SYSTEM
Installation & Commissioning Handbook Vol. 1
© 1999 Navia Aviation AS
21465-3.0

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Summary of Contents for NORMARC NM 7000 Series

  • Page 1 NORMARC 7000 INSTRUMENT LANDING SYSTEM Installation & Commissioning Handbook Vol. 1 © 1999 Navia Aviation AS 21465-3.0...
  • Page 2 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H RECORD OF CHANGES NM 7000 series Part no.: 21465 Change No.: Section: Entered by: Rev.: Section 1 3.0. Section 2 3.0. Section 3 3.0. Section 4 3.0. Section 5 3.0. Section 6 3.0. Change No.: Description: ‹ 1DYLD $YLDWLRQ $6...
  • Page 3 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H TABLE OF CONTENTS Installation and Commissioning Handbook Vol. 1 NM 7000 Series SECTION 1 ANTENNA INSTALLATION PROCEDURES SECTION 2 SHELTER INSTALLATION SECTION 3 ANTENNA SYSTEMS ADJUSTMENTS PROCEDURES Chapter 1 NM 3522 6-element Array Chapter 2...

  • Page 4: Table Of Contents

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H SECTION 1 ANTENNA INSTALLATION PROCEDURE Table of contents 1 Civil Work Checks ....................3 1.1 Unpacking ......................3 2 Localizer Antenna System Assembly ..............5 2.1 Positioning of antenna frame work ..............5 2.2 Framework assembly ..................5 2.3 Cable duct assembly ..................
  • Page 5 ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H 5 Marker beacon installation antenna assembly ............19 5.1 Antenna assembly....................19 5.2 Antenna Cables installation................19 5.3 Antenna Mast erection ..................19  ‹ 1DYLD $YLDWLRQ $6...

  • Page 6: Civil Work Checks

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Civil Work Checks Check that the civil work is carried out according to NM specifications. • Correct positions for antenna foundation bolts. • Correct dimensions and quality of bolts in concrete. • Check note 4 and 5 on LLZ foundation drawing. •...
  • Page 7 ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H  ‹ 1DYLD $YLDWLRQ $6...

  • Page 8: Localizer Antenna System Assembly

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Localizer Antenna System Assembly Positioning of antenna frame work By means of a theodolite determine the exact position of the extended runway centre line and mark the 90 degrees angle points on each concrete slab. See Figure 2-1. Figure 2-1 Alignment of antenna frame work.

  • Page 9: Cable Duct Assembly

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H Check antenna spacing after assembly. Repeat for the rear bars and maintain correct spac- ing distance between the front and rear bars.Tighten all clamping angles. Cable duct assembly See Vol. 2 Section 2 Chapter 6. The cable duct sections are numbered and should be assembled according to the drawing.
  • Page 10 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Now the cables can be connected to the antennas. Lift up the rear end 4-5 cm and put some- thing between the flanges to keep them apart. Be careful don’t shake the mast. Connect the cables, take away the support and tighten the flange.
  • Page 11 ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H Figure 2-3  ‹ 1DYLD $YLDWLRQ $6...

  • Page 12: Near Field Monitor Antenna Installation

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Near Field monitor antenna installation The mast shall be assembled and installed at the extended runway centre line according to dwg.no. 14256A3 Vol. 2 Section 2 Chapter 8. The NF antenna shall be installed horizontally and point towards the centre of the LLZ antenna array.
  • Page 13 ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H   ‹ 1DYLD $YLDWLRQ $6...

  • Page 14: Glidepath Antenna System Assembly/Towers 10M And 15M

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Glidepath antenna system assembly/towers 10m and 15m General See Volume 2 Section 3 Chapter 6. The site selected for the assembly of the GP mast framework should be of sufficient size to accommodate either the 10 meter or the 15 meter mast. It is also recommended to select a relatively well levelled site to avoid twists or bends in the mast construction which may create difficulties in joining the parts.

  • Page 15: Bottom Section

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H SPRING W. FLAT W. HBK1130-1 Figure 3-1 Securing: Bolts should be secured by either deformation of threads by use of a chisel or by the use of lock-nuts (double nuts). Ref. Fig. 3-2 . Recommended Double Nut Method Punching of Nut...

  • Page 16: Diagonal Struts

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H 3.2.3 Diagonal struts Position and bolt diagonal struts, starting with the shorter, pos. 2, and continuing with the longer pos. 3 in accordance with pos. 2, 3, and 4, DWG. 16612A3. 3.2.4 Third vertical leg Repeat the procedure as for 3.2.2 and 3.2.3.

  • Page 17: Obstruction Light

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H 3.5.2 Obstruction light The obstruction light is mounted on the bracket (pos. 7) and the power cable is fixed with cable ties to the rear side of the ladder or inside the cable trunking if space is available. Antenna suport 3.6.1 Adjustment rails...

  • Page 18: Antenna Cables

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H 3.7.2 Antenna cables Antenna cables and monitor cables are carefully laid out in the cable trays such that equal length of all cables is sufficient to be guided into the shelter. However, the excess cables shall be neatly bundled and temporarily fixed to the antenna mast, and protected from damage dur- ing later mast erection.
  • Page 19 ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H   ‹ 1DYLD $YLDWLRQ $6...

  • Page 20: Near Field Monitor

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Near field monitor Cable installation The NF Monitor cable is first carefully rolled out and positioned such that there is no risk for damage during installation in the cable duct. The cable is fixed to the pulling rope at the NF position end together with and extra rope for maintenance purpose.
  • Page 21 ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H   ‹ 1DYLD $YLDWLRQ $6...

  • Page 22: Marker Beacon Installation Antenna Assembly

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Marker beacon installation antenna assembly Antenna assembly See Volume 2 Section 4. The LPDA is first mounted to the antenna mast, horizontally on the ground. Position the assembly such that the base is close to the foundation bolts. Antenna Cables installation For Dual Antenna system the Distribution Network is preferably installed inside shelter.
  • Page 23 ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H   ‹ 1DYLD $YLDWLRQ $6...
  • Page 24 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H SECTION 2 SHELTER INSTALLATION Table of contents 1 General ........................3 2 Mechanical installation LLZ/GP ................5 2.1 Mounting Kit MK1343A..................5 2.2 Moving RF Connectors..................6 3 Electrical Installation LLZ/GP .................. 9 3.1 Connection Overview ..................9 3.2 Power and Battery....................
  • Page 25 ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H  ‹ 1DYLD $YLDWLRQ $6...

  • Page 26: General

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H General Equipments are installed according to interior drawings. All electrical equipment including antenna systems and monitor antennas must be connected to a common earth point. See Volume 2 Chapters «Grounding» for resp. Equipment. Cables are routed the shortest distance in the cable trunks. Use terminal shoes at the cable ends before connecting them to cabinet terminals.
  • Page 27 ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H  ‹ 1DYLD $YLDWLRQ $6...

  • Page 28: Mechanical Installation Llz/Gp

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Mechanical installation LLZ/GP The «NM7000» cabinet is constructed for mounting on a wall. For easy operation, the key- board/display section should be in eye/shoulder height (140-160cm). The RF connectors may be mounted either on the cabinet top or the cabinet bottom. The free space required around the cabinet is approximately one by one meter, see figure 2-1 1.0m 0.9m...

  • Page 29: Moving Rf Connectors

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H Screw M8x25 Split lock washer M8 Flat washer M8 POWER POWER HBK597-1 Adjustment screw Figure 2-2 «NM7000» mounted on wall with MK1343A. Moving RF Connectors If desired the RF connectors may be moved from the cabinet top to the bottom or vice versa, as illustrated in figure 2-3.
  • Page 30 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H To interchange the plates, follow these instructions: • Release the nuts (A), washers (B) and flanges (C) on the plates. • Release the ground connections (D) on the connector plate and (H) on the blind plate. •...
  • Page 31 ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H  ‹ 1DYLD $YLDWLRQ $6...

  • Page 32: Electrical Installation Llz/Gp

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Electrical Installation LLZ/GP This paragraph describes the external electrical connections of the «NMnr» main cabinet. Connection Overview The ILS main cabinet consists of three connector sites, illustrated in Figure 3-1. • The ILS RF signals to and from the antenna system are connected at the top of the main cabinet.

  • Page 33: Power And Battery

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H Power and Battery The power supply and the backup battery are connected to the power connector rail inside the cabinet back section as shown in Figure 3-2 and 3-3. If two power supplies are used, these are parallel coupled inside one of the power supplies (see Dwg.no.: 17370A3).
  • Page 34 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H POWER SUPPLY CONNECTIONS CHARGER 1 CHARGER 2 Current Current sharing sharing 2 3 4 220V 220V FuseX FuseY Figure 3-3 Power Supply connections. ‹ 1DYLD $YLDWLRQ $6  ...

  • Page 35: Rf Inputs

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H RF Inputs The RF inputs are: • Course Line - CL. • Near Field Antenna - NF. • Displacement Sensitivity - DS. • Clearance - CLR (two frequency applications only). These are connected as shown in Figure 3-4 (front view) HBK577-2 CLR DS Figure 3-4 RF input connections.

  • Page 36: Dc Loop (Localizer Only)

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H DC Loop (Localizer only) The DC loops are connected to the CI1210A connection interface board in the cabinet back section. Placement and pin out are illustrated in Figure 3-6. • DL_REF* are the reference voltages from the main cabinet. •...

  • Page 37: Remote Control ( Cabinet)

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H Remote Control ( CABINET) The remote control is connected to the CI1210A connection interface board as illustrated in Figure 3-7. The connection of the remote control, remote slave panel and interlock switch is done at the remote control site and covered in Section 2 6.1-6.4. •...

  • Page 38: Pc And Modem

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H PC and Modem PC terminals and modems are connected to the standard pin out RS232, 9 pins DSUB con- nectors on the CI1210A connection interface board as illustrated in Figure 3-8. Recom- mended connections are: •...

  • Page 39: Dme (Localizer Only)

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H DME (localizer only) Distance Measurement Equipment DME is connected to the CI1210A connection interface board as illustrated in Figure 3-9. • ACT_DME[P,N] is the positive and negative terminal of the DME active signal from the DME, respectively.
  • Page 40 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H CI1210A 2.7K IDENT FROM DME 2.7K HBK770-1 Figure 3-10 DME master connections. If the DME shall be used as ident master, connect as shown in Figure 3-10. In the RMM pro- gram, CLR modulation and DME interface dialogue (see Operators Manual), set DME as master and DME active signal to OPEN.

  • Page 41: Analog Inputs

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H Analog Inputs The analog inputs are connected to the CI1210A connection interface board as illustrated in Figure 3-12. The inputs are: • ANALOG CH.1-3 - three differential DC analog inputs, P is the positive and N is the nega- tive terminal.

  • Page 42: Digital Inputs And Outputs

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H 3.10 Digital Inputs and Outputs Eight bidirectional digital channels (numbered 0-7) are sited on the CI1210A connection inter- face board as illustrated in Figure 3-13. Logic levels: TTL. Input impedance: 560ohms. Suitable female connectors are Weidemüller BLZ-5.08/4 or equivalent. TEMP TEMP ANALOG...

  • Page 43: Battery Warning

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H 3.11 Battery Warning Two inputs for main power supply failure (backup battery active) are sited on the CI 1210A connection interface board as illustrated in Figure 3-14. See also Figure 3-3. Logic levels: Normally high (5V) ( 0V =battery warning). Input impedance: 10kohms.

  • Page 44: Mechanical Installation Marker Beacon

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Mechanical Installation Marker Beacon This chapter gives a brief instruction on the mechanical installation of the Marker Beacon cab- inet and antenna. Marker beacon Cabinet The NM7050 cabinet is constructed for mounting on a wall. For easy operation, the keyboard and display section should be in eye/shoulder height (140-160cm).
  • Page 45 ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H   ‹ 1DYLD $YLDWLRQ $6...

  • Page 46: Electrical Installation Marker Beacon

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Electrical installation marker beacon Marker beacon cabinet 5.1.1 Connection Overview All electrical connections except the local PC connection, the mains connection and the RF IN and OUT connections are on the CI1376 connection interface board inside the cabinet. CABINET UNDERSIDE FRONT VIEW WITH FRONT PLATE MARKER BEACON SYSTEM...

  • Page 47: Rf In And Out

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H RF In and Out • The output signal RF OUT is connected to the antenna with N-connectors and 50 Ω coaxial cable. • The input signal RF IN is connected to the antenna probe with N-connectors and 50 Ω coaxial cable RF OUT RF IN...

  • Page 48: Mains

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H TEMP AC LEVEL ANA CHA1 ANA CHA2 ANA CHA3 OUTDOOR REMOTE CI 1376 CONTROL LINE TEMP INDOOR DIG PORT A DIG PORT B DIG PORT C DIG PORT D BATT GND BATT +24V EXT CHARGE BATTERY BATT GND BATT +24V...
  • Page 49 ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H Mains The mains power cable connections are underneath the cabinet. They are covered by a alu- minium plate fastened with four screws. The cable itself is threaded through the cable gland and the three wires are connected to the terminals N, L and GND shown below in Figure 5-5. MAINS POWER HBK787/1 GROUND CABLE CONNECTION...

  • Page 50: Remote Control Cabinet

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Remote Control cabinet The remote line and remote controis connected to the CI 1376 connection interface board as illustrated in Figure 5-6. • FSK_[A,B] is the modem line pair. • GND is main cabinet ground A suitable female connector for the remote line is Weidemüller BLZ-5.08/4 or equivalent.

  • Page 51: Pc And Modem

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H PC and Modem Modem connections for remote PC are the standard pin out RS232, 9 pins DSUB connector on the CI1376 connection interface board marked remote-rmm as illustrated in Figure 5-7. For local PC connection use the RS232 on front panel Figure 5-7 PB1378 CONFIGURATION TEMP...
  • Page 52 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H 1 - Not used 2 - RXD 3 - TXD 4 - Not used 5 - GND 6 - Not used 7 - RTS 8 - CTS 9 - Not used HBK790-1 Figure 5-8 Local PC RS232 connection ‹ 1DYLD $YLDWLRQ $6  ...

  • Page 53: Analogue Inputs

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H Analogue Inputs The analogue inputs are connected to the CI1376 connection interface board as illustrated in Figure 5-9. The inputs are: • Analogue Channel 1-3 - three differential DC analogue inputs, P (pin-1) is the positive and N (pin-3) is the negative terminal, and pin 2 is GND.

  • Page 54: Digital Inputs And Outputs

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Digital Inputs and Outputs Eight bi-directional digital channels (numbered 0-7) are sited on the CI1376 connection inter- face board as illustrated in Figure 5-10. Logical levels: TTL Input impedance: 560Ω. A suitable female connector is Weidemüller BLZ-5.08/4 or equivalent PB 1378 CONFIGURATION TEMP...
  • Page 55 ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H   ‹ 1DYLD $YLDWLRQ $6...

  • Page 56: Remote Control Connections (Twr)

    TROL connector on CI1210 (ILS) or CI1376 (Marker Beacon) to P9 on MB1346 as shown in figure 6-1. Suitable female connectors are Weidemüller BLZ-5.08/4 or equivalent. 600 ohms cable should be used. REMOTE NORMARC CONTROL MB1346 1 - GND 1 - TXOFF...

  • Page 57: Power Supply Connection

    MB1347 is connected to input connector P4 on MB1346 - remote control motherboard. Several MB1346’s are serial linked by connecting P5 on one board to P4 on the next. Suitable female connectors are Weidemüller BLZ-5.08/4 or equivalent. NORMARC NORMARC MB1346...

  • Page 58: Remote Slave Connection

    P3 on MB1346 to P1 on SF1344. P10 on MB1346 is not used. See Fig- ure 6-3. Suitable connectors are standard 25 pins female DSUB (Harting 0967 025 0442 and 0967 225 4704 or equivalent), connected by a 10 wire 1:1 cable NORMARC MB1346 TXOFF ALARM...

  • Page 59: Interlock Switch Connection

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H Interlock switch connection The interlock switch is either connected to P8 on MB1346 (remote control motherboard) or to P2 on SF1344 (remote slave panel), see Figure 6-4. INTERLOCK MB1346 / P8 SWITCH SF1344 / P2 RWYA RWYB INTERLOCK...
  • Page 60 SECTION 3 ANTENNA SYSTEMS ADJUSTMENTS PROCEDURE Table of contents 1 NM 3522 6 elements antenna system adjustments - LLZ ........7 1.1 Mechanical alignment of antenna array ............. 7 1.1.1 Right angle points with reference to runway center line ......7 1.1.2 Spacing distance between LPDA’s ..............
  • Page 61 2.5.1 Mechanical alignment .................. 21 2.5.2 Final electrical position adjustment.............. 21 2.6 DC-Loop adjustment and testing................ 21 2.6.1 DC-LOOP adjustment.................. 21 2.6.2 Antenna fault condition testing..............21 3 NM 3524 12 Elements antenna system adjustments - LLZ (Dual frequency)..23 3.1 Mechanical alignment of antenna array .............
  • Page 62 4.4.3 Clearance ....................37 4.5 Near field monitor adjustments................37 4.5.1 Mechanical alignment .................. 37 4.5.2 Final electrical position adjustment.............. 38 4.6 DC-Loop adjustment and testing................ 38 4.6.1 DC-LOOP adjustment.................. 38 4.6.2 Antenna fault condition testing..............38 5 NM 3526 16 Elements antenna system adjustments - LLZ ........39 5.1 Mechanical alignments of antenna array............
  • Page 63 NM 3544 Sideband reference antenna system adjustment - Glide path.... 53 7.1 Mechanical alignment of mast and antennas ............. 53 7.1.1 Preparation of mechanical- and electrical data..........53 7.1.2 Forward shift (FWD) ..................53 7.1.3 Antenna heights................... 53 7.1.4 Antenna offsets.................... 53 7.2 Initial electrical measurements ................
  • Page 64 10 NM 3562 Dual antenna system adjustments - MKR..........71 10.1 Mechanical alignment..................71 10.1.1Antenna mast....................71 10.2 Electrical measurements ..................71 10.2.1Antenna cable lengths (Electrical phase equality) ........71 10.2.2Monitor return cable length ................72 10.2.3Phase and amplitude transfer measurement..........72...

  • Page 66: Nm 3522 6 Elements Antenna System Adjustments - Llz

    NM 3522 6 elements antenna system adjustments - LLZ Mechanical alignment of antenna array 1.1.1 Right angle points with reference to runway center line The alignment of the antenna array perpendicular to the runway centreline should be carried out to an accuracy of 0.03°. This corresponds to within 4 mm accuracy at positions antenna 1 and antenna 6.

  • Page 67: Csb/Sbo Phasing

    VECTOR VOLTMETER From cabinet CSB BNC o/p CABLE UNDER TEST 20dB DIR. COUPL. OPEN END Figure 1-1 Cable phasing measurements set-up. 1.2.2 CSB/SBO phasing 127( $VFHUWDLQ WKDW WKH 7[PRGXODWRU XVHG LV RSWLPDOO\ FDOLEUDWHG Connect the NM3710 Field Test Set to the monitor BNC test connector in the ADU. (Use 20..30 dB attenuator at the I/P of the Field Test Set.) Adjust SBO phaser in the Cabinet (associated with Tx to air) to obtain 0.0% DDM reading.
  • Page 68 Connect the antenna cables A1 and A6 to the ADU outputs labelled A1 and A6 respectively. Connect all other ADU outputs to dummy load. Use the NM3710 with portable test antenna. On the the runway establish a point officially marked as the centre line for DDM measure- ments.

  • Page 69: Phase And Amplitude Transfer Measurement

    Example 1: Item 1: A1/A12: +4.3% DDM Item 3: A1+MF/A12: -2.0% DDM (MF in A1) ⋅ 9° 4.3 ϕ -------------------- - 4.8° Example 2: Item 1: A6/A7: -0.6% DDM Item 3: A6 /A7+MF: +1.86% DDM (MF in A7) ⋅ 9° 0.6 ϕ...

  • Page 70: Antenna Return Loss

    Amplitude tolerance: ±1.0 dB. If the amplitude tolerance is exceeded something might be wrong in the LPDA monitor circuit or connector/cable. Record the final result in Ground Commissioning Record. 1.2.6 Antenna return loss Utilise a vector voltmeter or network analyser in a test set-up Figure 1-3.

  • Page 71: Ddm Check Of Adu O/P (Output Port)

    1.3.1 DDM check of ADU O/P (output port) At each antenna feed output of the ADU the measured DDM is a result of the SBO/CSB ratio according to the formula ⋅ 2 SBO ------------------ - COSγ %DDM µA %SDM -34.8 -337 40.0 -32.7...

  • Page 72: Ddm Field Check

    Move the directional coupler to A4 and compare readings with calculated value. If measured DDM is lower than the calculated values for A4 then increase the SBO power, or vice versa, until a fairly good matching set of values are obtained. Adjust the SBO attenuator for the other Tx to the same setting.

  • Page 73: Dc-Loop Adjustment And Testing

    DC-Loop adjustment and testing 1.6.1 DC-LOOP adjustment The DC loop (cable fault monitor) alignment is carried out accordingly to the procedure described in Monitor Alignment and Calibration chapter. 1.6.2 Antenna fault condition testing For this test observe that the LLZ cabinet System Status indicates ALARM. The transmitter must be on during this test.The monitors should be in MANUAL mode in order to prevent transmitter from being shut off during the test.

  • Page 74: Nm 3523B 12 Elements Antenna System Adjustments - Llz (Single Frequency)15

    NM 3523B 12 Elements antenna system adjustments - LLZ (Single fre- quency) Mechanical alignments of antenna array 2.1.1 Right angle points with reference to runway centre line The alignment of the antenna array perpendicular to the runway centreline should be carried out to an accuracy of 0.02°.

  • Page 75: Csb/Sbo Phasing

    VECTOR From cabinet CSB BNC o/p CABLE UNDER TEST 20dB DIR. COUPL. OPEN END Figure 2-1 Cable phasing measurement set-up. 2.2.2 CSB/SBO phasing 127( $VFHUWDLQ WKDW WKH 7[PRGXODWRU XVHG LV RSWLPDOO\ FDOLEUDWHG Connect the NM3710 Field Test Set to the monitor BNC test connector in the ADU. (Use 20..30 dB attenuator at the I/P of the Field Test Set.) Adjust SBO phaser in the Cabinet (associated with Tx to air) to obtain 0.0% DDM reading.
  • Page 76 Connect all other ADU outputs to dummy load. Use the NM3710 with portable test antenna. On the the runway establish a point officially marked as the centre line for DDM measure- ments. Ascertain that the measurement point is not affected by reflected signals upsetting the direct received signals from the antenna pairs.

  • Page 77: Phase And Amplitude Transfer Measurement

    ⋅ 9° 4.3 ϕ -------------------- - 4.8° Example 2: Item 1: A6/A7: -0.6% DDM Item 3: A6 /A7+MF: +1.86% DDM (MF in A7) ⋅ 9° 0.6 ϕ ----------------------- - 1.7° 1.86 Cable trimming length: 6.2 mm/°. 2.2.5 Phase and amplitude transfer measurement Connect each antenna cable and monitor cable to LPDA load and source respectively.

  • Page 78: Course Sector Adjustment

    Measure and record in Ground Commissioning Record the return loss value for each LPDA including antenna cable. Tolerance: 20 dB minimum. VECTOR VOLTMETER From cabinet Antenna cable under test CSB BNC o/p 20dB DIR. COUPL. Antenna Figure 2-3 Antenna return loss measurement set-up. Course sector adjustment The required course sector width (CS) can be pre-adjusted by two methods: 1.

  • Page 79: Ddm Field Check

    For CS = 4°: % DDM µA %SDM -34.8 -337 40.0 -32.7 -316 40.0 -28.1 -272 40.0 -30.4 -294 40.0 For other CS values use the formula: ⋅ 4° 4° -------------------------------- - A n ( ) EXAMPLE A5 DDM for CS = 5°: 28.1 4 ⋅...

  • Page 80: Monitor Combining Unit (Mcu) Adjustments

    Monitor combining unit (MCU) adjustments 2.4.1 Course Line Connect the Field Test Set to the CL output connector of the MCU. Adjust the CL line stretcher to obtain 0.0% DDM. 2.4.2 Course Sector Connect the Field Test Set to the CS output of the MCU. Adjust the CS line stretcher to obtain a reading of 15.5% DDM.
  • Page 81 ...

  • Page 82: Nm 3524 12 Elements Antenna System Adjustments - Llz (Dual Frequency)

    NM 3524 12 Elements antenna system adjustments - LLZ (Dual fre- quency) Mechanical alignment of antenna array 3.1.1 Right angle points with reference to runway centre line The alignment of the antenna array perpendicular to the runway centreline should be carried out to an accuracy of 0.02°.

  • Page 83: Csb/Sbo Phasing

    VECTOR From cabinet CSB BNC o/p CABLE UNDER TEST 20dB OPEN END DIR. COUPL. Figure 3-1 Cable phasing measurement set-up. 3.2.2 CSB/SBO phasing 127( 6ZLWFK RII WKH FOHDUDQFH WUDQVPLWWHU $VFHUWDLQ WKDW WKH 7[PRGXODWRU XVHG LV RSWLPDOO\ FDOLEUDWHG Connect the NM3710 Field Test Set to the monitor BNC test connector in the ADU. (Use 20..30 dB attenuator at the I/P of the Field Test Set.) Adjust Course SBO phaser in the Cabinet (associated with Tx to air) to obtain 0.0% DDM reading.

  • Page 84: Antenna Pair Phasing

    3.2.4 Antenna pair phasing 127( %HIRUH WKH DQWHQQD SDLU SKDVLQJ SURFHGXUH LV FRPPHQFHG DVFHUWDLQ WKDW WKH 7;PRGXODWRU XVHG LV RSWLPDOO\ FDOLEUDWHG 6ZLWFK RII WKH FOHDUDQFH WUDQVPLWWHU Connect the antenna cables A1 and A12 to the ADU outputs labelled A1 and A12 respec- tively.

  • Page 85: Phase And Amplitude Transfer Measurement

    Calculate the corresponding phase error (electrical degrees) from the formula 9° DDM ϕ ° ( ) ------------------------------------------ - : DDM (%) measured in item 1. : DDM (%) measured in item 3. (Example values from NM3523B) Example 1: Item 1: A1/A12: +4.3% DDM Item 3: A1+MF/A12: -2.0% DDM (MF in A1) ⋅...

  • Page 86: Antenna Return Loss

    Then determine if one of the monitor cables must be trimmed in order to comply with phase tolerance for the set of cables. Tolerance: ±2°. Amplitude tolerance: ±1.0 dB. If the amplitude tolerance is exceeded something might be wrong in the LPDA monitor circuit or connector/cable. Record the final result in Ground Commissioning Record.

  • Page 87: Ddm Check Of Adu O/P

    3.3.1 DDM check of ADU O/P At each antenna feed output of the ADU the measured DDM is a result of the SBO/CSB ratio according to the formula where CSB is a fixed value. SBO is adjustable by the SBO attenuator in the cabinet. γ...
  • Page 88 Adjust the SBO attenuator for the other Tx to the same setting. Remove the 90°-stub. 3.3.2 Clearance SBO power Switch off the course transmitter. Insert the 90°-stub in the CLR SBO path. Connect the Field Test Set to the BNC test connec- tor (antenna 7 sample) in the ADU.
  • Page 89 3.5.1 Mechanical alignment Align the near field (NF) monitor antenna mechanically in the extended runway centreline position. 3.5.2 Final electrical position adjustment Connect the Field Test Set to the NF monitor cable. The reading should be 0.0% DDM if the antenna is aligned correctly and no reflections appear.
  • Page 90 NM 3525 24 Elements antenna system adjustments - LLZ Mechanical alignments of antenna array 4.1.1 Right angle points with reference to runway centre line The alignment of the antenna array perpendicular to the runway centreline should be carried out to an accuracy of 0.01°. This corresponds to within 5 mm accuracy at positions antenna 1 and antenna 24.
  • Page 91 VECTOR VOLTMETER From cabinet CSB BNC o/p CABLE UNDER TEST 20dB OPEN END DIR. COUPL. Figure 4-1 Cable phasing measurement set-up. 4.2.2 CSB/SBO phasing 127( 6ZLWFK RII WKH FOHDUDQFH WUDQVPLWWHU $VFHUWDLQ WKDW WKH 7[PRGXODWRU XVHG LV RSWLPDOO\ FDOLEUDWHG Connect the NM3710 Field Test Set to the monitor BNC test connector in the ADU. (Use 20..30 dB attenuator at the I/P of the Field Test Set.) Adjust SBO phaser in the Cabinet (associated with Tx to air) to obtain 0.0% DDM reading.
  • Page 92 4.2.4 Antenna pair phasing 127( %HIRUH WKH DQWHQQD SDLU SKDVLQJ SURFHGXUH LV FRPPHQFHG DVFHUWDLQ WKDW WKH 7[PRGXODWRU XVHG LV RSWLPDOO\ FDOLEUDWHG 6ZLWFK RII WKH FOHDUDQFH WUDQVPLWWHU Connect the antenna cables A1 and A24 to the ADU outputs labelled A1 and A24 respec- tively.
  • Page 93 µA DDM Pair % DDM (6°) (6°) A1/A24 20.1 2.08 A2/A23 18.5 1.91 A3/A22 16.8 1.74 A4/A21 14.9 1.54 A5/A20 13.2 1.36 A6/A19 11.4 1.18 A7/A18 1.00 A8/A17 0.82 A9/A16 0.64 A10/A15 0.45 A11/A14 0.27 A12/A13 0.09 Cable trimming length: 6.2 mm/°. 4.2.5 Phase and amplitude transfer measurement Connect each antenna cable and monitor cable to LPDA load and source respectively.
  • Page 94 Then determine if one of the monitor cables must be trimmed in order to comply with phase tolerance for the set of cables. Tolerance: ±2°. Amplitude tolerance: ±1.0 dB. If the amplitude tolerance is exceeded something might be wrong in the LPDA monitor circuit or connector/cable. Record the final result in Ground Commissioning Record.
  • Page 95 ⋅ 2 SBO ------------------ - COSγ where CSB is a fixed value. SBO is adjustable by the SBO attenuator in the cabinet. γ is 0° when the 90°-stub is inserted into the SBO. For each course sector width (CS) of the array a set of corresponding DDM values exists unique for each antenna O/P.
  • Page 96 4.3.2 Clearance SBO power Switch off the course transmitter. Insert the 90°-stub in the CLR SBO path. Connect the Field Test Set to the BNC test connec- tor TEST 1 (antenna 13 sample) in the ADU. (Use 20...30 dB attenuator at the Field Test Set I/P).
  • Page 97 4.5.2 Final electrical position adjustment Connect the Field Test Set to the NF monitor cable. The reading should be 0.0% DDM if the antenna is aligned correctly and no reflections appear. Otherwise, a small mechanical re-positioning of the antenna may be necessary in order to obtain 0.0% DDM.
  • Page 98 NM 3526 16 Elements antenna system adjustments - LLZ Mechanical alignments of antenna array 5.1.1 Right angle points with reference to runway centre line The alignment of the antenna array perpendicular to the runway centreline should be carried out to an accuracy of 0.01°. This corresponds to within 4 mm accuracy at positions antenna 1 and antenna 16.
  • Page 99 VECTOR From cabinet CSB BNC o/p CABLE UNDER TEST 20dB DIR. COUPL. OPEN END Figure 5-1 Cable phasing measurement set-up. 5.2.2 CSB/SBO phasing 127( 6ZLWFK RII WKH FOHDUDQFH WUDQVPLWWHU $VFHUWDLQ WKDW WKH 7[PRGXODWRU XVHG LV RSWLPDOO\ FDOLEUDWHG Connect the NM3710 Field Test Set to the monitor BNC test connector in the ADU. (Use 20..30 dB attenuator at the I/P of the Field Test Set.) Adjust SBO phaser in the Cabinet (associated with Tx to air) to obtain 0.0% DDM reading.
  • Page 100 5.2.4 Antenna pair phasing 127( %HIRUH WKH DQWHQQD SDLU SKDVLQJ SURFHGXUH LV FRPPHQFHG DVFHUWDLQ WKDW WKH 7[PRGXODWRU XVHG LV RSWLPDOO\ FDOLEUDWHG 6ZLWFK RII WKH FOHDUDQFH WUDQVPLWWHU Connect the antenna cables A1 and A16 to the ADU outputs labelled A1 and A16 respec- tively.
  • Page 101 The sensitivity of DDM versus electrical phase error can be estimated using the following pro- cedure: 1. Note the DDM value reported by the operator at the Field Test Set for the antenna pair under test. 2. a) If the DDM value is positive (150 Hz dominance), insert a male-female (MF) N-adaptor (-9°) in the antenna left side seen forward toward the Field test set.
  • Page 102 VECTOR VOLTMETER M(n) Ant. From cabinet CSB BNC o/p A(n) 20dB DIR. COUPL. Figure 5-2 Phase and amplitude transfer measurement set-up. Measure relative transfer phase and amplitude for each Antenna/Monitor return cable in ref- erence to A1/M1. Then determine if one of the monitor cables must be trimmed in order to comply with phase tolerance for the set of cables.
  • Page 103 Course sector width adjustment The required course sector width (CS) can be pre-adjusted by two methods: 1. DDM measurement of ADU antenna feed outputs. 2. DDM field check. Preferably both methods should be carried out and compared. 5.3.1 DDM check of ADU O/P At each antenna feed output of the ADU the measured DDM is a result of the SBO/CSB ratio according to the formula ⋅...

  • Page 104: Clearance Sbo Power

    Connect the NM3710 (use 20 dB attenuator at NM3710 I/P) to the directional coupler’s for- ward port. Adjust the SBO attenuator (for the Tx to air) until the DDM value equals the previously calcu- lated value for the CS. Move the directional coupler to A4, A5 and compare readings with calculated values. If mea- sured DDM is lower than the calculated values for A4, A5 then increase the SBO power, or vice versa, until a fairly good matching set of values are obtained.

  • Page 105: Near Field Monitor Adjustments

    5.4.3 Clearance Connect the Field Test Set to the CLR output connector of the MCU and use the acual DDM as standard signal to the monitors. Near field monitor adjustments The exact position of the near field monitor antenna cannot be determined until after the flight check is completed, due to possible mechanical re-alignment of the antenna array.

  • Page 106: Electrical Measurements

    NM 3543 Null reference antenna system adjustments - Glide path Mechanical alignment of mast and antennas 6.1.1 Preparation of mechanical- and electrical data A ground level plot made with theodolite should be available. From this plot Forward slope (FSL) and Sideway slope (SSL) can be calculated. FSL is defined negative for falling forward slope seen from the GP mast.

  • Page 107: Monitor Return Cable Length

    Measure return phase for the upper antenna cable (A2). Then take into account the phase centres of the Antenna given in the factory data sheet. Determine if one of the cables should be trimmed in order to comply with phase equality tolerance for the set of antennas. Tolerance: ±1.0°...

  • Page 108: Antenna Return Loss

    Measure and record phase/amplitude for upper antenna transfer signals. Then determine if one of the monitor cables must be trimmed in order to comply with phase tolerance for the set of cables. Tolerance: ±1°. Amplitude tolerance: ±1.0 dB. If the amplitude tolerance is exceeded something might be wrong in the Antenna monitor circuit or connector/cable.

  • Page 109: Sector Width Adjustment

    The hybrid port 4 is terminated in 50Ω, min. 5 watts dummy load. Port 2 is connected to a directional coupler which is terminated in 50Ω, min. 5 watts dummy load. The directional cou- pler forward port is connected to NM3710 Field Test Set. Use 20 dB attenuator at the BNC I/P of NM3710.

  • Page 110: Monitoring Combining Unit (Mcu) Adjustments

    Monitoring combining unit (MCU) adjustments 6.4.1 Procedure Insert the 90°/stub in the SBO output of the NM3531 Cabinet. Connect the Field Test Set to the CL output of the MCU. Check that the reading is 0% ±0.5% DDM. Remove the 90°-stub from the SBO path. Connect the Field Test Set to the DS output of the MCU.
  • Page 111 ...
  • Page 112 NM 3544 Sideband reference antenna system adjustment - Glide path Mechanical alignment of mast and antennas 7.1.1 Preparation of mechanical- and electrical data A ground level plot made with theodolite should be available. From this plot Forward slope (FSL) and Sideway slope (SSL) can be calculated. FSL is defined negative for falling forward slope seen from the GP mast.
  • Page 113 Measure return phase for the upper antenna cable (A2). Then take into account the phase centres of the Antenna given in the factory data sheet. Determine if one of the cables should be trimmed in order to comply with phase equality tolerance for the set of antennas. Tolerance: ±1.0°...
  • Page 114 Measure and record phase/amplitude for upper antenna transfer signals. Then determine if one of the monitor cables must be trimmed in order to comply with phase tolerance for the set of cables. Tolerance: ±1°. Amplitude tolerance: ±1.0 dB. If the amplitude tolerance is exceeded something might be wrong in the Antenna monitor circuit or connector/cable.

  • Page 115: Sbo Power Adjustment

    7.3.2 CSB/SBO phasing Insert the 90°-stub in the SBO cable path to the ADU. Connect the NM3710 Field Test Set to the monitor return cable (M1) from the lower antenna. Adjust SBO phaser in the Cabinet (associated with Tx to air) to obtain 0 DDM reading. Repeat the phasing procedure for the second transmitter.

  • Page 116: Location Of Near Field Antenna Position

    FSL (°) K3 (mm) K4 (mm) DS DDM (%) 10.3 10.1 8.75 -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 -0.8 -0.9 -1.0 FSL (+) : Upsloping terrain. (-) mm means shorter cable. After cable length modification carry out procedure 1.5.1. Note that DS DDM after adjustment should correspond to the value given in the table above (column 4).

  • Page 117: Near Field Monitor Position Search

    Theoretically, DDM should be close to -0.9% DDM (90) as a minimum value due to path loss differences between antennas seen from the NF antenna. 7.6.1 Near Field Monitor Position Search A de-phasing test procedure of upper antenna (A2) can be carried out in order to search for the optimum monitor position.

  • Page 118: Antenna Distribution Unit (Adu) Phase And Amplitude Check

    Antenna distribution unit (ADU) phase and amplitude check 7KLV FKHFN LV RSWLRQDO 7.7.1 Preparation Utilise a vector voltmeter in a test set-up Figure 7-4 VECTOR VOLTMETER From cabinet CSB BNC o/p 20dB DIR. COUPL. 50Ω Figure 7-4 Test set-up for ADU Phase and Amplitude check. Connect CSB and SBO outputs from Cabinet to dummy loads.
  • Page 119 vector voltmeter to 0° reference phase. Move the B-probe to U O/P. If necessary adjust SBO U/L phaser (PH2) to obtain 180° reading at the U O/P. 127( ,I 3+ KDV EHHQ DGMXVWHG UHFKHFN WKH UHIHUHQFH SKDVH IURP / 23 DQG PHDVXUH DJDLQ WKH 8 SKDVH 5HSHDW XQWLO ƒ...

  • Page 120: Nm 3545 M-Array Antenna System Adjustments - Glide Path

    NM 3545 M-Array antenna system adjustments - Glide path Mechanical alignment of mast and antennas 8.1.1 Preparation of mechanical- and electrical data A ground level plot made with theodolite should be available. From this plot Forward slope (FSL) and Sideway slope (SSL) can be calculated. FSL is defined negative for falling forward slope seen from the GP mast.

  • Page 121: Monitor Return Cable Length

    Measure return phase for the middle antenna cable (A2) and upper antenna cable (A3). Then take into account the phase centres of the Antennas given in the factory data sheet. Deter- mine if one of the cables should be trimmed in order to comply with phase equality tolerance for the set of antennas.

  • Page 122: Antenna Return Loss

    Measure and record phase/amplitude for upper antenna transfer signals. Then determine if one of the monitor cables must be trimmed in order to comply with phase tolerance for the set of cables. Tolerance: ±1°. Amplitude tolerance: ±1.0 dB. If the amplitude tolerance is exceeded something might be wrong in the Antenna monitor circuit or connector/cable.

  • Page 123: Sector Width Adjustment

    the monitor return cable (M1) from the lower antenna. Adjust SBO phaser in the Cabinet (associated with Tx to air) to obtain 0 DDM reading. Repeat the phasing procedure for the second transmitter. Remove the 90°-stub from the SBO path. Sector width adjustment 8.4.1 SBO power adjustment...

  • Page 124: Adjustments Procedure

    8.5.1 Adjustments procedure The Clearance transmitter shall be switched off during steps a) through e) below. 1. Connect the Field Test Set to the CL output of the MCU. Insert the 90° stub in the SBO out- put of the Transmitter Cabinet. In the Antenna Distribution Unit (ADU), disconnect SBO to Lower antenna by using the SBO-L link.

  • Page 125: Antenna Distribution Unit (Adu) Dia 346A Phase And Amplitude Check

    127( 7KH YDOXHV DW WKH 1) SRVLWLRQ DUH QRUPDOLVHG LH  ''0 ZLWK QR $ GHSKDVLQJ In order to look for the optimal distance between the GP mast and the NF antenna carry out the following test: Measure DDM at positions +1 m and -1 m of original position. Then compare the results with the theoretical values for these offsets from the nominal 360°...

  • Page 126: Procedure

    The clearance transmitter shall be switched off. Switch off the modulation to the transmitter used for the test. Insert a 20 dB attenuator at the input port of the directional coupler. Connect a test cable from the Cabinet’s CSB BNC connector to the 20 dB attenuator. Connect the vector voltmeter A-probe to the directional coupler’s forward output.
  • Page 127 6. Connect the cable TEST SIG to the SBO input. If necessary adjust SBO U/L phaser (PH2) to obtain 180° reading at the L output. 7. Connect the B-probe to U output. If necessary adjust UPPER ANT phaser (PH3) to obtain 180°.

  • Page 128: Nm 3561 Single Antenna System Adjustments - Mkr

    NM 3561 Single antenna system adjustments - MKR Mechanical alignment 9.1.1 Antenna mast Utilise a waterlevel and align the mast vertically by adjustments of the base nuts. Electrical measurements 9.2.1 Antenna return loss Utilise a vector voltmeter or network analyser in a test set-up. Measure return loss for the LPDA.
  • Page 129 ...
  • Page 130 NM 3562 Dual antenna system adjustments - MKR 10.1 Mechanical alignment 10.1.1 Antenna mast Utilise a waterlevel and align the mast vertically by adjustments of the base nuts. 10.2 Electrical measurements :$51,1* ,I WKH DWWHQXDWRU PRGXOH LQ WKH 0DUNHU XQLW LV FRQILJXUHG IRU  G% WKHQ WKH 5) RXWSXW SRZHU LV LQ WKH UDQJH RI  ZDWWV 7DNH FDUH RI QRW WR RYHUORDG WKH YHFWRU YROWPHWHU Connect a directional coupler terminated in 50* 10W to the N output connector of the Marker.
  • Page 131 10.2.2 Monitor return cable length Measure return phase as described in (8.2.1) for both monitor cables. Check that initial val- ues are within ±1.5° true phase (±3.0° return phase). 10.2.3 Phase and amplitude transfer measurement Connect each antenna cable and monitor cable to LPDA load and source respectively. Utilise a vector voltmeter or network analyser in a test set-up Figure 10-2, and measure relative transfer phase and amplitude for the antenna cable (A2) in reference to antenna (A1)
  • Page 132 ...
  • Page 133 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H SECTION 4 TEST AND ADJUSTEMENTS Table of Contents 1 Tests and adjustments LLZ/GP ................3 1.1 Configuration Settings ..................3 1.1.1 ILS Configuration ..................3 1.1.2 Remote Ports Access Level Configuration ..........4 1.1.3 Warning Configuration ................. 4 1.2 Transmitter Alignments and Calibration .............
  • Page 134 ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H  ‹ 1DYLD $YLDWLRQ $6...

  • Page 135: Tests And Adjustments Llz/Gp

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Tests and adjustments LLZ/GP Configuration Settings Follow this procedure to set the configurations in the ILS according to the desired system con- figuration. 1.1.1 ILS Configuration Set the correct configuration for this ILS according to this table. The Station Control strap plat- form is located on TCA 1218.

  • Page 136: Remote Ports Access Level Configuration

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H HBK592-1 Figure 1-1 Station Control strap platform. 1.1.2 Remote Ports Access Level Configuration The allowed access levels on REMOTE ports 1 and 2 on the RMS can be configured by set- ting jumpers on the TCA1218A. Set jumpers in S1 - S4 to configure which access levels that are allowed on remote ports 1 and 2.

  • Page 137: Rf Phase Feedback Adjustment

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Carry out the alignment steps in the order outlined below: 1.2.1 RF Phase Feedback Adjustment 1.2.2 RF Power 1.2.3 LF Phase Adjustment 1.2.4 RF Power Balance Adjustment 1.2.5 RF Phase at Combiner I/P 1.2.6 SDM Calibration 1.2.7 DDM Calibration...

  • Page 138: Rf Power

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H 1.2.2 RF Power The CSB and corresponding SBO output power can be adjusted by means of the RMM Pro- gram or the Local Display/Keyboard. Normal operating power level is: LLZ Course 15 W CSB LLZ Clearance 15 W CSB GP Course...

  • Page 139: Rf Power Balance Adjustment

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H By means of the RMM turn on 90 Hz modulation for both Course Tx and Clearance Tx. Adjust 90 Hz COU phase adj. R1 (LF1223A) observing oscillocope channel A until the wave- form equals left hand graph in Figure 1-2. Adjust 90 Hz CLR phase adj.

  • Page 140: Rf Phase At Combiner I/P

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H '(02'8/$7(' 6%2 '% 32:(5 ,0%$/ '(02'8/$7(' 6%2 1250$/ $1&( +=+= Figure 1-4 Power balance SBO illustration. Perfect power balance between the 90 Hz modulated carrier and the 150 Hz modulated car- rier is indicated when the two largest sets of peak waveforms fall on lines paralell to the base- line.

  • Page 141: Sdm Calibration

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H The RF phase (90° start phase) can be adjusted by trimmer RF PHASE on the back of the LPA/GPA. Adjust until the minima points between the smallest peak waveform reach the baseline or a minimum.

  • Page 142: Ident Tone Modulation Depth

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H 1.2.8 Ident Tone Modulation Depth Connect the Field Test Set to the CSB BNC test connector in the Cabinet’s Change-over sec- tion. (Insert a 20 dB attenuator at the input of the Field Test Set in order to avoid overloading). Set the Ident Control to CONTINUOUS from the RMM Program or the Local Display/Key- board.

  • Page 143: Monitor Alignment And Calibration

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H For details, refer to the adjustment procedure for each antenna system. Monitor Alignment and Calibration. TEST EQUIPMENT REQUIRED: • Oscilloscope, general purpose • NM 3710 Field Test Set (with 20 dB attenuator) • BNC Test Cable •...

  • Page 144: Agc Time Adjustment

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H Adjust the jumper settings in P2++ and potmeters R338++ until the voltage is 240mV at TP23++ Figure 1-7 Alternative jumper settings of P2++. Turn off the equipment and remove the extender card. Set the MF12xx in its correct position. Turn on the transmitters.

  • Page 145: Monitor Alarm Setting Procedure

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Monitor Alarm Setting Procedure Type in the wanted alarm limits from the RMM Program or the Local Display/Keyboard. The monitors will have preset alarm limits when the ILS is delivered for factory.These alarm limits are as listed in the table below: Table 1-3 Localizer alarm limits 15uA 25uA...

  • Page 146: Maintenance Limit Adjustments

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H Table 1-4 Glidepath alarm limits 37uA 35uA 45uA annex. 18.5uA CAT I +/- 5% +/- 5% RF level +/- 1dB 3dB*) 37uA 45uA annex. 18.5uA 35uA CAT II +/- 5% +/- 5% RF level +/- 1dB 3dB*) 37uA...

  • Page 147: Adjustment Points

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Adjustment points Figure 1-8 Front side adjustment points. ‹ 1DYLD $YLDWLRQ $6  ...
  • Page 148 ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H TEMP TEMP ANALOG ANALOG ANALOG DIGITAL DIGITAL DIGITAL DIGITAL INDOOR OUTDOOR LEVEL CH.1 CH.2 CH.3 PORT A PORT B PORT C PORT D Battery protection level adj. RS232 RS232 RS232 DC-LOOP DC-LOOP BATTERY REMOTE WARNING CONTROL CI1210A...
  • Page 149 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H RF phase adj. RF.PHASE DC offset adj. RF balance adj. 90Hz mod. adj. Phase feedback offset adj. 150 Hz mod. adj. RF-BAL G90Hz G150Hz PH.OFFS. HBK696-1 Figure 1-10 Power Amplifier Assembly adjustment points (rear view). ‹ 1DYLD $YLDWLRQ $6  ...
  • Page 150 ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H   ‹ 1DYLD $YLDWLRQ $6...

  • Page 151: Tests And Adjustments Marker Beacon

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Tests and adjustments marker beacon 2.1.1 Preparations Terminate the terminal with a 50Ω load (antenna or dummy). The transmitters are fac- RF OUT tory adjusted to 2 watt output power. Let both transmitters run for ½ hour at this power to achieve a stable working temperature before any fine tuning is carried out.
  • Page 152 ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H Set the configuration for the MB according to Table 2-1 Strap no State Function Strap IN 2 power supplies (NM 7050 B/D) Strap OUT 1 power supply (NM 7050 A/C) Strap IN Access Grant disabled Strap OUT Access Grant enabled Strap IN...
  • Page 153 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Strap Function when strap is in Beacon is INNER marker Beacon is MIDDLE marker Beacon is OUTER marker Beacon is FAN marker Table 2-2 Marker function configuration Figure 2-2 shows where the straps are located on the transmitter board(s) TX 1373 HBK798/1 Figure 2-2 Location of Marker Beacon type straps on transmitter board...

  • Page 154: Adjustment Points

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H Adjustment points The adjustment points are shown in Figure 2-3 Adjustment points and explained below. The figure shows a fully equipped system, NM 7050D, see Section 3 for configuration details: 1. Battery charging voltage (nom 27.4V@20°C) 2.

  • Page 155: Adjustments At Installation

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Shield box Oscillator HBK864/1 Figure 2-3 Adjustment points Adjustments at installation These procedures have to be carried out at installation in order to set up your equipment right. 2.3.1 Transmitter output power adjustment This adjustment is most easily done with the RMM PC program but the local keyboard/display may be used.

  • Page 156: Monitor Calibration

    ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H Maintenance • Check that you read the desired modulation depth in • Set to air and repeat the two previous steps. 2.3.2 Monitor calibration The software adjustments are most easily done with the RMM program, but may be carried out from the front panel.

  • Page 157: Battery Protection Cut-Off Voltage

    1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Carrier Power • If not, adjust the potentiometer on TX1 until the parameter shows 2.00W • Repeat for 1W and 0.5W • Repeat for TX2. ⇒ Inner Marker uses an external 10 dB attenuator, use 0.2W, 0.1W and 50mW to cali- brate.
  • Page 158 ,167$//$7,21 &200,66,21,1* +$1'%22. 1250$5&  DITUSVH@IUÃG6I9DIBÃT`TU@H   ‹ 1DYLD $YLDWLRQ $6...
  • Page 159 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. TUSV IUÃG6I BÃT`TU SECTION 5 GROUND COMMISIONING REFERANCE DOCUMENTS Table of Contents NM7000 LOCALIZER...................2 NM7000 GLIDE PATH ..................11 NM7050 MARKER BEACON ................18 ‹ 1DYLD $YLDWLRQ $6 ...
  • Page 160 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H GROUND COMMISSIONING DOCUMENT NM7000 LOCALIZER Airport Runway Cabinet Serial no. Antenna system Antenna Distribution Unit (ADU) Serial no. Monitor Distribution Unit (MCU) Serial no. Place: Date: Navia Aviation representative (Sign.) Customer representative (Sign.) ‹ 1DYLD $YLDWLRQ $6 ...
  • Page 161 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H GENERAL The purpose of this document is to • Ensure that all operating functions are working before the equipment is put into service. • Establish useful reference data and settings for comparisons to routine maintenance data and trouble shooting.
  • Page 162 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H 2.1 - 2.2 Connect the NM3710 to the monitor input CL cable (from MCU). Use keypad CHANGE OVER to activate the second transmitter. Read DDM and SDM. 2.3 - 2.4 Connect the NM3710 to the monitor input DS cable (from MCU). Use keypad CHANGE OVER to activate the second transmitter.
  • Page 163 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H 11.0 Make a file copy to diskette of the NM70xx ILS Configuration file. ‹ 1DYLD $YLDWLRQ $6 ...
  • Page 164 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Recordings from test connectors on the Cabinet: COURSE TRANSMITTERS ITEM PARAMETER LIMITS Tx 1 Tx 2 CSB DDM -0.1...+0.1% CSB SDM 39.5...40.5% F ± 2.2 kHz CARRIER FREQ. MOD 90Hz 89.9...90.1 Hz MOD 150 Hz 149.9...150.1 Hz IDENT 1020 Hz 1010...1030 Hz...
  • Page 165 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Transmitter waveforms test point checks (BNC test points): ITEM PARAMETER COU Tx 1 COU Tx 2 CLR Tx 1 CLR Tx 2 CSB LF SBO LF PHASE CORR Attenuators and Phaser settings in the Cabinet, Antenna Distribution Unit (ADU) and Monitor combining unit (MCU).
  • Page 166 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Phase and Amplitude transfer data, Antenna Return Loss. ITEM ANT. Phase Ampli- Return transfer tude loss transfer ° ° ° ° ° ° ° ° ° 5.10 ° 5.11 ° 5.12 ° 5.13 ° 5.14 °...
  • Page 167 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Remote Control functions: ITEM PARAMETER RCU CHECK TX ON/OFF CHANGE-OVER ALARM SILENCE PARAM WARNING DISAGR WARNING BATT WARNING IDENT WARNING MAINT WARNING STBY WARNING Slave panel functions: ITEM PARAMETER SLAVE- CHECK TX ON/OFF ALARM SILENCE ALARM NORMAL WARNING...
  • Page 168 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H DC-loop Test: ITEM ANTENNA DLØ Mon 1 Mon 2 Mon 1 Mon 2 Mon 1 Mon 2 Mon 1 Mon 2 9.10 9.11 9.12 9.13 9.14 9.15 9.16 9.17 9.18 9.19 9.20 9.21 9.22 9.23 9.24 ‹ 1DYLD $YLDWLRQ $6...
  • Page 169 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H GROUND COMMISSIONING DOCUMENT NM7000 GLIDE PATH Airport Runway Cabinet Serial no. Antenna system Antenna Distribution Unit (ADU) Serial no. Monitor Distribution Unit (MCU) Serial no. Place: Date: Navia Aviation representative (Sign.) Customer representative (Sign.) ‹ 1DYLD $YLDWLRQ $6  9...
  • Page 170 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H GENERAL The purpose of this document is to • Ensure that all operating functions are working before the equipment is put into service. • Establish useful reference data and settings for comparisons to routine maintenance data and trouble shooting.
  • Page 171 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H 2.3 - 2.4 Connect the NM3710 to the monitor input DS cable (from MCU). Use keypad CHANGE OVER to activate the second transmitter. Read DDM and SDM. 2.5 - 2.6 Connect the NM3710 to the monitor input NF cable (from NF antenna). Use keypad CHANGE OVER to activate the second transmitter.
  • Page 172 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Recordings from test connectors on the Cabinet: COURSE TRANSMITTERS ITEM PARAMETER LIMITS Tx 1 Tx 2 CSB DDM -0.2...+0.2% CSB SDM 79.0...81.0% F ± 5.0 kHz CARRIER FREQ. MOD 90Hz 89.9...90.1 Hz MOD 150 Hz 149.9...150.1 Hz Not applicable Not applicable...
  • Page 173 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Transmitter waveforms test point checks (BNC test points): PARAMETER COU Tx 1 COU Tx 2 CLR Tx 1 CLR Tx 2 CSB LF SBO LF PHASE CORR Attenuators and Phaser settings in the Cabinet, Antenna Distribution Unit (ADU) and Monitor combining unit (MCU).Cabinet: PARAMETER COU SBO-attenuator Normal...
  • Page 174 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H MCU NM3545 Antenna system: PARAMETER 4.12 GP Attenuator 4.13 SW Attenuator 4.14 Upper Antenna Phaser PH1 4.15 Middle Antenna Phaser PH2 4.16 Course Cancellation Phaser PH3 Phase and Amplitude transfer data, Antenna Return Loss. ANT.
  • Page 175 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Slave panel functions: PARAMETER SLAVE CHECK TX ON/OFF ALARM SILENCE ALARM NORMAL WARNING Accessories: DEVICE CHECK 90° cable w/frequency label 2 pcs different extension cards ‹ 1DYLD $YLDWLRQ $6  9...
  • Page 176 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H GROUND COMMISSIONING DOCUMENT NM7050 MARKER BEACON Airport Runway Cabinet NM 7050 Serial no. Antenna system (NM3561/NM3562 Place: Date: Navia Aviation representative (Sign.) Customer representative (Sign.) ‹ 1DYLD $YLDWLRQ $6  9...
  • Page 177 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H GENERAL The purpose of this document is to • Ensure that all operating functions are working before the equipment is put into service. • Establish useful reference data and settings for comparisons to routine maintenance data and trouble shooting.
  • Page 178 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Connect a Directional Coupler, terminated to dummy load to the output. Turn off modula- tion and use the RF signal from the test output on the directional coupler for this measure- ment. Save Reference on the Vector Voltmeter, connect the Vector Voltmeter to the Antenna cable and measure the Return Loss.
  • Page 179 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Recordings from external test instruments and Front Panel: ITEM PARAMETER LIMITS Tx 1 Tx 2 Carrier frequency 75 MHz ± 2.25 kHz Keying code f ± 2.5%±4% Modulation tone fre- quency Modulation depth (Reading from Moni- tor 1 &...
  • Page 180 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H Slave panel functions: ITEM PARAMETER SLAVE- CHECK TX ON/OFF ALARM SILENCE ALARM NORMAL WARNING INTERLOCK SWITCH Accessories: ITEM DEVICE CHECK 2 pcs different extension cards ‹ 1DYLD $YLDWLRQ $6  9...
  • Page 181 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H SECTION 6 APPENDIX Table of contents Diagram 1 Relative SBO vs CS Width, NM3522..........2 Diagram 2 Relative SBO vs CS Width, NM3523B........3 Diagram 3 Relative SBO vs CS Width, NM3524..........4 Diagram 4 Relative SBO vs CS Width, NM3525..........5 Diagram 5 Relative SBO vs CS Width, GP antenna systems.
  • Page 182 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H -0,5 -1,5 -2,5 Course Sector Width (°) Diagram 1 Relative SBO vs CS Width, NM3522. ‹ 1DYLD $YLDWLRQ $6 ...
  • Page 183 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H -0,5 -1,5 -2,5 -3,5 Course Sector Width ( °) Diagram 2 Relative SBO vs CS Width, NM3523B. ‹ 1DYLD $YLDWLRQ $6 ...
  • Page 184 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H -0,5 -1,5 -2,5 -3,5 Course Sector Width (°) Diagram 3 Relative SBO vs CS Width, NM3524. ‹ 1DYLD $YLDWLRQ $6 ...
  • Page 185 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H -0,5 -1,5 0,55 0,65 0,75 0,85 0,95 Sector Width (°) Diagram 4 Relative SBO vs CS Width, NM3525. ‹ 1DYLD $YLDWLRQ $6 ...
  • Page 186 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H -0,5 -1,5 0,55 0,65 0,75 0,85 0,95 Sector Width (°) Diagram 5 Relative SBO vs CS Width, GP antenna systems. ‹ 1DYLD $YLDWLRQ $6 ...
  • Page 187 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H 3,25 GP angle Upper ant. Lower ant. (°) (cm) (cm) -0,33 -4 +5 0,20 -3 -3 -0,35 +3 0,21 -0,38 0 0 0,23 0 -0,40 -2 0,24 -0,43 6 -5 0,26 3 +3 Relative Sideway Offset vs GP Angle 3,15 3,05 2,95...
  • Page 188 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H 3,25 GP angle Lower ant. (°) (cm) 0,20 0,21 0,23 0 0,24 0,26 Relative Sideways Offset vs GP Angle 3,15 3,05 2,95 2,85 Upper antenna: (cm) x 3 Lower antenna relative height (cm) Diagram 7 GP angle vs relative antenna height, NM3544. ‹ 1DYLD $YLDWLRQ $6 ...
  • Page 189 1250$5&  ,167$//$7,21 &200,66,21,1* +$1'%22. DITUSVH@IUÃG6I9DIBÃT`TU@H 3,25 GP angle Lower ant. (°) (cm) 0,13 0,14 0,15 0 0,16 0,17 Relative Sideways Offset vs GP Angle 3,15 3,05 2,95 2,85 Upper antenna: (cm) x 2 Lower antenna relative height (cm) Diagram 8 GP angle vs relative antenna height, NM3543. ‹ 1DYLD $YLDWLRQ $6 ...

Table of Contents