NORMARC NM 7000 Series Installation & Commissioning Handbook Download Page 26 | Manualshive

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NORMARC NM 7000 Series Installation & Commissioning Handbook Download Page 26

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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.

Coax cables must be carefully formed along the trunking to avoid damage.

Line transient absorbers must be installed at the entrance of the remote control lines, both in
the shelter and the tower.

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Summary of Contents for NM 7000 Series

Page 1: ... 1999 Navia Aviation AS 21465 3 0 NORMARC 7000 INSTRUMENT LANDING SYSTEM Installation Commissioning Handbook Vol 1 ...

Page 2: ...80 17 1 1 6 67 0 167 7 21 200 66 21 1 1 22 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 ...

Page 3: ...Array Chapter 3 NM 3524 12 element Dual Frequency Array Chapter 4 NM 3525 24 element Array Chapter 5 NM 3526 16 element Array Chapter 6 NM 3543 Null Reference Glide Path Chapter 7 NM 3544 Sideband Reference Glide Path Chapter 8 NM 3545 M array Glide Path Chapter 9 NM 3561 Marker Beacon System Chapter 10 NM 3562 Dual Antenna Marker Beacon SECTION 4 EQUIPMENT TEST AND ADJUSTMENTS SECTION 5 APPENDIX ...

Page 4: ... Bottom Flange 12 3 2 3 Diagonal struts 13 3 2 4 Third vertical leg 13 3 2 5 Ladder 13 3 2 6 Locking of nuts 13 3 3 Middle section 13 3 3 1 Vertical legs 13 3 4 Top section 13 3 4 1 General 13 3 4 2 Horizontal struts 13 3 5 Obstruction light 13 3 5 1 Obstruction light bracket 13 3 5 2 Obstruction light 14 3 6 Antenna suport 14 3 6 1 Adjustment rails 14 3 6 2 Mounting of supports 14 3 6 3 Antenna a...

Page 5: ...50 5 167580 17 1 1 6 67 0 167 7 21 200 66 21 1 1 22 1DYLD YLDWLRQ 6 5 Marker beacon installation antenna assembly 19 5 1 Antenna assembly 19 5 2 Antenna Cables installation 19 5 3 Antenna Mast erection 19 ...

Page 6: ... sticks plates at shelter and antenna foundation Shelter interior installations Mains power installations in shelter and antenna assembly Pulling rope in cable ducts Remote control cables and terminals for RCU interface 1 1 Unpacking Equipment cases are carefully transported to the appropriate sites before unpacking Check each item toward packing list so as to detect any discrepancy before assembl...

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Page 8: ...o Figure 2 1 On middle aluminium bar mark exact centre Position the bar accurately so the marks line up with the extended centre line Affix the two clamping angles The remaining aluminium bars of the front part can now be assembled across the concrete fundaments Use junction plates between each bar On each fundament left and right adjust to the same distance between the theodolite mark and the alu...

Page 9: ...f the roll in the cable duct After all cables are installed the masts can be erected Secure masts with stays immediately after erection Depending on antenna mast height there will be one or two long stays between front and rear rows Tighten all bolts at the mast bottom Level the masts sideways and tighten the short stays Leave the long stays loose to make it easier to install antennas Install the ...

Page 10: ... 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 Level the antenna masts backward forward and tighten the long supports ...

Page 11: ...1250 5 167580 17 1 1 6 67 0 167 7 21 200 66 21 1 1 22 1DYLD YLDWLRQ 6 Figure 2 3 ...

Page 12: ...itioned 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 Connectors and cable labels must be protected against dust and water wear during pulling operation The cable is pulled through the pipe into the shelter and installed and connected to the NF Monitor In...

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Page 14: ...apter 6 Align the trestles one pair for the first section parallel to each other approximately 4 meters apart See marked up drawing 16641A3 16642A3 Before the work starts the colours of the sections should be observed as follows Tightening and securing of bolts Recommended torque s are M12 75NM M24 700NM ungreased bolts Preferred tighten ing method is Turn of nut method 1 Snug tight using 0 6 x re...

Page 15: ... Fig 3 2 Figure 3 2 3 2 Bottom Section 3 2 1 Vertical Beams Place two vertical main legs pos 1 dwg 16612A3 on the trestles 3 2 2 Bottom Flange Assemble vertical main legs and bottom flanges pos 8 DWG 16612A3 and also junction plates pos 9 HBK1130 1 SPRING W FLAT W C1 FLAT W SECURING N MAIN N ADJUST N Double Nut Method Punching of Nut flat and spring washers MAIN NUT FLAT W Recommended ADJUST NUT H...

Page 16: ...een the bracing Don t tighten up the bolts before all brackets are connected and adjusted 3 2 6 Locking of nuts Torque load nuts as follows According to general instructions Chapter 3 1 M 12 75 Nm 3 3 Middle section 3 3 1 Vertical legs Repeat procedure as for 3 2 1 and onwards except 3 2 2 bottom flanges 127 7KH VHFRQG PLGGOH VHFWLRQ ZLOO RQ D P PDVW EH WKH WRS VHFWLRQ 3 4 Top section 3 4 1 Genera...

Page 17: ...set is too wide to be adjusted with the vertical rail position the rail as far as possible to the side and do the rest of the adjustment by sliding the antenna in the bracket pos 2 dwg 16792A3 3 6 3 Antenna assembly The antenna assembly which comprises the radom and the antenna is mounted to the verti cal adjustment rail See dwg 16792A3 If NM antennas are supplied see dwg 10039A3 From site data de...

Page 18: ...Adjustment of the mast is made by means of the lower nuts ref dwg 7084A3 on the retaining bolts The tolerance is 0 02 degrees Top of mast should be within 5 mm referred to vertical centreline 3 8 2 Locking of nuts Torque load nuts as follows M24 700 Nm and secure them according to Chapter 3 1 3 9 Cable installation into shelter 3 9 1 Cable tube A cable tube is installed from the upper part of the ...

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Page 20: ...t 4 2 NF Monitor antenna assembly The mast and antenna is assembled complete in horizontally position according to dwg no 7058 A3 The antenna element is positioned as accurate as possible according to site date for NF mon itor antenna height Install a gasket in the top cover On the NF monitor cable remove the connector and thread the cable from the bottom of the mast through the gasket The mast is...

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Page 22: ... during installation Install the cables through the hole below the end of the LPDA and out through the bottom of the mast Fit the cable connectors into the appropriate A and M marked N connectors in the LPDA Carefully thread pull the cables further into the shelter so there is no loop between the antenna mast base and the fundament 5 3 Antenna Mast erection A crane is needed to erect the antenna m...

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Page 24: ...nd Modem 15 3 8 DME localizer only 16 3 9 Analog Inputs 18 3 10 Digital Inputs and Outputs 19 3 11 Battery Warning 20 4 Mechanical Installation Marker Beacon 21 4 1 Marker beacon Cabinet 21 5 Electrical installation marker beacon 23 5 1 Marker beacon cabinet 23 5 1 1 Connection Overview 23 5 2 RF In and Out 24 5 3 Battery 24 5 4 Mains 26 5 5 Remote Control cabinet 27 5 6 PC and Modem 28 5 7 Analog...

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Page 26: ...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 Coax cables must be carefully formed along the trunking to avoid damage Line transient absorbers must be installed at the entrance of the remote control lines both in the she...

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Page 28: ...er 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 Figure 2 1 NM7000 required mounting space top view 2 1 Mounting Kit MK1343A NAVIA AVIATION supplies a wall mounting kit MK1343A This kit is dimensioned for stan dard 60 cm space between studs For easy mounting place the cabinet on the rest screws B before entering...

Page 29: ...nnectors may be moved from the cabinet top to the bottom or vice versa as illustrated in figure 2 3 The back section F of the main cabinet consists of a connector plate and a blind plate that are interchangeable These plates are identical except for the connectors POWER POWER Adjustment screw 1 1 Flat washer M8 Split lock washer M8 Screw M8x25 B A A A A HBK597 1 ...

Page 30: ...ase the ground connections D on the connector plate and H on the blind plate Interchange the plates Remount the nuts washers and flanges in the order shown Remount the ground connections D and H Make shore they are located on the hinge G side of the cabinet Figure 2 3 Moving the RF connectors to the cabinet top CL D NF C A B A B CSB CLR CLR DS SBO CLR E SBO CSB A F B C G H HBK596 1 ...

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Page 32: ...o the top see Mechanical Installation The power supply supplies and the backup battery are connected to the power connector rail inside the cabinet back section All other external connections are sited on the CI1210A connection interface board inside the cabinet back section Figure 3 1 ILS main cabinet connection overview RF CONNECTIONS CABLE FEEDTHROUGH COU SBO CLR SBO CLR CSB OUT COU CSB CLR DS ...

Page 33: ...cted 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 The cables used should have 6mm2 intersection Figure 3 2 Power and backup battery connections Battery 0V 27V Power Supply 0V 27V HBK576 2 ...

Page 34: ...21 1 1 22 Figure 3 3 Power Supply connections 2 3 4 8 1 9 6 7 5 N L G Current sharing N L G 1 2 5 4 3 7 6 9 8 To equipment 0V 27V Power supply Battery warning 1 Battery warning 2 220V FuseX FuseY 220V CHARGER 1 CHARGER 2 POWER SUPPLY CONNECTIONS sharing Current ...

Page 35: ...igure 3 4 front view Figure 3 4 RF input connections 3 4 RF Outputs The RF outputs are sited at the cabinet top as illustrated in Figure 3 5 The connections are All applications COU SBO COUrse Tx SideBand Only COU CSB COUrse Tx Carrier and SideBand Two frequency applications CLR SBO CLeaRance Tx SideBand Only CLR CSB CLeaRance Tx Carrier and SideBand Figure 3 5 RF output connections NF CL CLR DS H...

Page 36: ...nas GND is main cabinet ground Suitable female connectors are Weidemüller BLZ 5 08 6 or equivalent Figure 3 6 DC loop connections TEMP INDOOR TEMP OUTDOOR AC LEVEL ANALOG CH 1 ANALOG CH 2 ANALOG CH 3 DIGITAL PORT A DIGITAL PORT B DIGITAL PORT C DIGITAL PORT D TO MB1203 RS232 RS232 RS232 REMOTE CONTROL DC LOOP DC LOOP DME LOCAL REMOTE 2 REMOTE 1 CH 1 2 CH 3 4 1 6 DC LOOP CH 1 2 DC LOOP CH 3 4 1 Ch ...

Page 37: ... the modem line pair GND is main cabinet ground For normal FSK modem operation the straps S9 11 on CI1210A should be mounted A suitable female connector is Weidemüller BLZ 5 08 4 or equivalent Figure 3 7 Remote control connection TEMP INDOOR TEMP OUTDOOR AC LEVEL ANALOG CH 1 ANALOG CH 2 ANALOG CH 3 DIGITAL PORT A DIGITAL PORT B DIGITAL PORT C DIGITAL PORT D TO MB1203 RS232 RS232 RS232 REMOTE CONTR...

Page 38: ... distant PC terminals connected through a modem REMOTE 1 the PC located at the airport technical maintainance site Figure 3 8 PC and modem connections TEMP INDOOR TEMP OUTDOOR AC LEVEL ANALOG CH 1 ANALOG CH 2 ANALOG CH 3 DIGITAL PORT A DIGITAL PORT B DIGITAL PORT C DIGITAL PORT D TO MB1203 RS232 RS232 RS232 REMOTE CONTROL DC LOOP DC LOOP DME LOCAL REMOTE 2 REMOTE 1 CH 1 2 CH 3 4 CI1210A 1 5 6 9 1 ...

Page 39: ...e signal from the DME respectively OUT_DME P N is the positive and negative terminal of the morse code envelope signal to the DME respectively A suitable female connector is Weidemüller BLZ 5 08 6 or equivalent Figure 3 9 DME connections TEMP INDOOR TEMP OUTDOOR AC LEVEL ANALOG CH 1 ANALOG CH 2 ANALOG CH 3 DIGITAL PORT A DIGITAL PORT B DIGITAL PORT C DIGITAL PORT D TO MB1203 RS232 RS232 RS232 REMO...

Page 40: ...ns If the LLZ shall be used as ident master connect as shown in Figure 3 11 In the RMM pro gram CLR modulation and DME interface dialogue see Operators Manual set LLZ as mas ter and the DME active signal according to the DME s manual When the DME is active the LLZ will send every forth ident word to the DME When the DME is inactive the LLZ will be keying four out of four words If the LLZ shall be ...

Page 41: ...rement input Intended for use with a battery eliminator i e 220 9VAC to monitor the mains voltage Maximum voltage 24Vpp Input impedance 10kohms Suitable female connectors are Weidemüller BLZ 5 08 4 or equivalent Figure 3 12 Analog input connections TEMP INDOOR TEMP OUTDOOR AC LEVEL ANALOG CH 1 ANALOG CH 2 ANALOG CH 3 DIGITAL PORT A DIGITAL PORT B DIGITAL PORT C DIGITAL PORT D TO MB1203 RS232 RS232...

Page 42: ...nt Figure 3 13 Digital input output connections TEMP INDOOR TEMP OUTDOOR AC LEVEL ANALOG CH 1 ANALOG CH 2 ANALOG CH 3 DIGITAL PORT A DIGITAL PORT B DIGITAL PORT C DIGITAL PORT D TO MB1203 RS232 RS232 RS232 REMOTE CONTROL DC LOOP DC LOOP DME LOCAL REMOTE 2 REMOTE 1 CH 1 2 CH 3 4 CI1210A 1 USER_DIG5 2 GND 3 USER_DIG4 4 GND 1 4 1 4 1 4 1 4 DIGITAL PORT C 1 USER_DIG3 2 GND 3 USER_DIG2 4 GND DIGITAL PO...

Page 43: ...ery warning Input impedance 10kohms Suitable female connectors are Weidemüller BLZ 5 08 4 or equivalent Figure 3 14 Battery warning connections TEMP INDOOR TEMP OUTDOOR AC LEVEL ANALOG CH 1 ANALOG CH 2 ANALOG CH 3 DIGITAL PORT A DIGITAL PORT B DIGITAL PORT C DIGITAL PORT D TO MB1203 RS232 RS232 RS232 REMOTE CONTROL DC LOOP DC LOOP DME LOCAL REMOTE 2 REMOTE 1 CH 1 2 CH 3 4 BATTERY WARNING 1 BATT WA...

Page 44: ...t is 45 cm wide 34 cm deep and 27 cm height and weighs about 5 kg When mounting the cabinet on a wall do the following First drill the holes according to Figure 4 1 Mount the upper screws Leave 6 mm distance from the screw head to the wall Hang the cabinet on these screws using the key holes on the mounting rails Mount the lower screws Tighten all screws Figure 4 1 Mounting the cabinet on a wall M...

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Page 46: ...ker Beacon main cabinet connection overview GND L N RF IN RF OUT ON ON OFF 24V DC OFF POWER MAINS ON OFF LOCAL RS232 DISAGR STBY MAINT BATT PARAM REMOTE AUTO LOCAL MANUAL CHANGE OVER PROTECT WRITE TX1 TX2 MAIN TX TO AIR NORMAL WARNING ALARM SERVICE TX1 TX2 MARKER BEACON SYSTEM ESC PREV NEXT ENTER CABINET UNDERSIDE FRONT VIEW WITH FRONT PLATE FRONT VIEW WITHOUT FRONT PLATE RF IN AND OUT MAINS POWER...

Page 47: ...connected between Batt Gnd and Batt 24V on the con nector marked Battery on CI 1376 A 16Ah battery gives approximately six hours backup time with 5 8 hours charging time dependent on model For longer backup time an external charger is required to be able to charge the battery within a reasonable time An external battery protection circuit like Nor marcs BP 543 has to be connected between the Ext C...

Page 48: ...tion CI 1376 REMOTE CONTROL LINE TEMP OUTDOOR TEMP INDOOR AC LEVEL ANA CHA1 ANA CHA2 ANA CHA3 DIG PORT A DIG PORT B DIG PORT C DIG PORT D BATT GND EXT CHARGE BATT 24V 1 2 3 BATTERY BATT GND EXT CHARGE BATT 24V BATTERY HBK786 1 AC DC BP 543 BATTERY EXT CHARGE BATT 24V BATT GND MAINS EXTERNAL CHARGER BATTERY PROTECTION NM 7050 HBK863 1 ...

Page 49: ... 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 Figure 5 5 Power connection MAINS POWER GND L N GROUND CABLE CONNECTION HBK787 1 ...

Page 50: ...ote line is Weidemüller BLZ 5 08 4 or equivalent Alternatively the remote control connection is done with a RS 232 interface standard pin out 9 pins DSUB Figure 5 6 Remote control connection CI 1376 PB 1378 REMOTE CONTROL LINE TEMP OUTDOOR TEMP INDOOR AC LEVEL ANA CHA1 ANA CHA2 ANA CHA3 REMOTE RMM RS232 REMOTE CONTOL RS232 CONFIGURATION 1 GND 2 RC_LINE B 4 Not used 1 Not used 3 RXD 2 TXD 4 Not use...

Page 51: ...mm as illustrated in Figure 5 7 For local PC connection use the RS232 on front panel Figure 5 7 Figure 5 7 Modem and modem battery backup connection CI 1376 PB1378 REMOTE CONTROL LINE TEMP OUTDOOR TEMP INDOOR AC LEVEL ANA CHA1 ANA CHA2 ANA CHA3 REMOTE RMM RS232 REMOTE CONTOL RS232 CONFIGURATION DIG PORT A DIG PORT B DIG PORT C DIG PORT D 1 CD 2 RXD 3 TXD 4 DTR 5 GND 6 Not used 7 RTS 9 CTS 9 Not us...

Page 52: ...1250 5 1DYLD YLDWLRQ 6 167580 17 1 1 6 67 0 167 7 21 200 66 21 1 1 22 Figure 5 8 Local PC RS232 connection 1 Not used 2 RXD 3 TXD 4 Not used 5 GND 6 Not used 7 RTS 8 CTS 9 Not used HBK790 1 ...

Page 53: ...s with interface to an LM35 temperature sensor Maximum voltage 15V Input impedance 10kΩ AC Level AC level measurement input Intended for use with a battery eliminator to moni tor the mains voltage Maximum voltage 24Vpp Input impedance 10 kΩ Figure 5 9 Analogue input connections CI 1376 PB 1378 REMOTE CONTROL LINE TEMP OUTDOOR TEMP INDOOR AC LEVEL ANA CHA1 ANA CHA2 ANA CHA3 REMOTE RMM RS232 REMOTE ...

Page 54: ...560Ω A suitable female connector is Weidemüller BLZ 5 08 4 or equivalent Figure 5 10 Digital input output connections 1 DIGIN 1 2 GND 3 DIGIN 0 4 GND 1 DIGIN 3 2 GND 3 DIGIN 2 4 GND 1 DIGIN 5 2 GND 3 DIGIN 4 4 GND 1 DIGOUT 0 2 GND 3 DIGOUT 1 4 GND DIGITAL PORTS A B C D CI 1376 PB 1378 REMOTE CONTROL LINE TEMP OUTDOOR TEMP INDOOR AC LEVEL ANA CHA1 ANA CHA2 ANA CHA3 REMOTE RMM RS232 REMOTE CONTOL RS...

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Page 56: ... 4 or equivalent 600 ohms cable should be used Figure 6 1 Remote control to ILS connection REMOTE CONTROL 1 GND 2 FSK_P 3 FSK_N 4 GND J2 P3 P6 P7 P4 P5 P9 P10 P8 NORMARC OPTO OUT 2 ALARM E 1 ALARM C 4 NORM E 5 WARN C 6 WARN E 7 STBAL C 8 STBAL E 3 NORM C GND 5V 24V V_DIM GND 5V 24V V_DIM POWER OUT POWER IN AUX IN OUT SLAVE DIRECT INTERLOCK TXOFF ALARM LINE A LINE B RX A RX B TX A TX B SLAVE RS485 ...

Page 57: ...J2 P3 P6 P7 P4 P5 P9 P10 P8 NORMARC OPTO OUT 2 ALARM E 1 ALARM C 4 NORM E 5 WARN C 6 WARN E 7 STBAL C 8 STBAL E 3 NORM C GND 5V 24V V_DIM GND 5V 24V V_DIM POWER OUT POWER IN AUX IN OUT SLAVE DIRECT INTERLOCK TXOFF ALARM LINE A LINE B RX A RX B TX A TX B SLAVE RS485 J1 A B C 1 5 30 20 25 15 10 ALT LINK MB1346 P2 P3 S1 GND 24V POWER IN GND 5V 24V V_DIM POWER OUT V_DIM 24V MB1347 NORMARC 30 25 20 15 ...

Page 58: ...2 and 0967 225 4704 or equivalent connected by a 10 wire 1 1 cable Figure 6 3 Remote slave connection J2 P3 P6 P7 P4 P5 P9 P10 P8 NORMARC OPTO OUT 2 ALARM E 1 ALARM C 4 NORM E 5 WARN C 6 WARN E 7 STBAL C 8 STBAL E 3 NORM C GND 5V 24V V_DIM GND 5V 24V V_DIM POWER OUT POWER IN AUX IN OUT SLAVE DIRECT INTERLOCK TXOFF ALARM LINE A LINE B RX A RX B TX A TX B SLAVE RS485 J1 A B C 1 5 30 20 25 15 10 ALT ...

Page 59: ...ck switch is either connected to P8 on MB1346 remote control motherboard or to P2 on SF1344 remote slave panel see Figure 6 4 Figure 6 4 Interlock switch connection 2 1 MB1346 P8 OR SF1344 P2 INTERLOCK SWITCH RWYA RWYB 2 1 1 2 1 2 INTERLOCK GND 1 2 5 4 2 1 LLZ runway A GP runway A LLZ runway B GP runway B HBK775 2 ...

Page 60: ... 5 Near field monitor adjustments 13 1 5 1 Mechanical alignment 13 1 5 2 Final electrical position adjustment 13 1 6 DC Loop adjustment and testing 14 1 6 1 DC LOOP adjustment 14 1 6 2 Antenna fault condition testing 14 2 NM 3523B 12 Elements antenna system adjustments LLZ Single frequency 15 2 1 Mechanical alignments of antenna array 15 2 1 1 Right angle points with reference to runway centre lin...

Page 61: ...r combining unit MCU adjustments 29 3 4 1 Course Line 29 3 4 2 Course Sector 29 3 4 3 Clearance 29 3 5 Near field monitor adjustments 29 3 5 1 Mechanical alignment 30 3 5 2 Final electrical position adjustment 30 3 6 DC Loop adjustment and testing 30 3 6 1 DC LOOP adjustment 30 3 6 2 Antenna fault condition testing 30 4 NM 3525 24 Elements antenna system adjustments LLZ 31 4 1 Mechanical alignment...

Page 62: ...er 45 5 3 3 DDM field check 45 5 4 Monitor combining unit MCU adjustments 45 5 4 1 Course Line 45 5 4 2 Course Sector 45 5 4 3 Clearance 46 5 5 Near field monitor adjustments 46 5 5 1 Mechanical alignment 46 5 5 2 Final electrical position adjustment 46 5 6 DC Loop adjustment and testing 46 5 6 1 DC LOOP adjustment 46 5 6 2 Antenna fault condition testing 46 6 NM 3543 Null reference antenna system...

Page 63: ...check 59 7 7 1 Preparation 59 7 7 2 Procedure 59 8 NM 3545 M Array antenna system adjustments Glide path 61 8 1 Mechanical alignment of mast and antennas 61 8 1 1 Preparation of mechanical and electrical data 61 8 1 2 Forward shift FWD 61 8 1 3 Antenna heights 61 8 1 4 Antenna offsets 61 8 2 Initial electrical measurements 61 8 2 1 Antenna cable lengths Electrical phase equality 61 8 2 2 Monitor r...

Page 64: ...ments 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 65: ... ...

Page 66: ... planes 1 1 4 Azimuth alignment of LPDA s Determine a fixed point as far as possible along the extended centreline not less than approx imately 3000 m from the antenna array On each LPDA utilise the top horizontal line composed of the two half sections of the radome to point toward the fixed point If necessary adjust the LPDA horizontally by adjusting the mast supports on the front mast so that th...

Page 67: ...ectrical phase equality Each antenna cable should be electrically checked before the end connector is terminated in the LPDA Utilise a vector voltmeter or network analyser Establish antenna cable A1 leftmost seen from rear return phase as 0 reference phase Measure return phase for each of the remaining antenna cables A2 A6 Tolerance 1 0 true electrical cable length See measurement set up diagram F...

Page 68: ...om zero one of the antenna pair feed cable lengths should be trimmed in order to bring the DDM reading to zero If the DDM reading is positive 150 Hz dominance the antenna cable at the right hand side A4 A6 should be trimmed The sensitivity of DDM versus electrical phase error of 2 5 CS is given in the table below The sensitivity of DDM versus electrical phase error can be estimated using the follo...

Page 69: ...ly Utilise a vector voltmeter or network analyser in a test set up Figure 1 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 or more of the monitor cables must be trimmed in order to comply with phase tolerance for the set of cables Tolerance 2 ϕ 9 4 3 4 3 2 0 4 8 ϕ 9 0...

Page 70: ...r each LPDA Measure and record in Ground Commissioning Record the return loss value for each LPDA including antenna cable Tolerance 20 dB minimum Figure 1 3 Antenna return loss measurement set up 1 3 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 ...

Page 71: ...onding DDM values exists unique for each antenna O P For CS 5 For other CS values use the formula Example A3 DDM for CS 5 4 PROCEDURE Insert the 90 stub into the SBO path Connect a directional coupler with 50 load to antenna O P A3 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 ...

Page 72: ...rder to estimate an average value Expected value 0 0 0 2 DDM 1 4 Monitor combining unit MCU adjustments 1 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 1 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 1 5 Near field monitor adjustm...

Page 73: ...nna 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 Disconnect one antenna at a time and check that the LLZ cabinet System Status indicates ALARM after each antenna disconnection Carry out this test fo...

Page 74: ...ned in both planes 2 1 4 Azimuth alignment of LPDA s Determine a fixed point as far as possible along the extended centreline not less than approx imately 3000 m from the antenna array On each LPDA utilise the top horizontal line composed of the two half sections of the radome to point toward the fixed point If necessary adjust the LPDA horizontally by adjusting the mast supports on the front mast...

Page 75: ...ble should be electrically checked before the end connector is terminated in the LPDA Utilise a vector voltmeter or network analyser Establish antenna cable A1 leftmost seen from rear return phase as 0 reference phase Measure return phase for each of the remaining antenna cables A2 A12 Tolerance 1 0 true electrical cable length See measurement set up diagram 2 1 2 2 4 Antenna pair phasing 127 HIRU...

Page 76: ...le lengths should be trimmed in order to bring the DDM reading to zero If the DDM reading is positive 150 Hz dominance the antenna cable at the right hand side A7 A12 should be trimmed 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...

Page 77: ... 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 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 2 2 6 Antenna return loss Ut...

Page 78: ...ferably both methods should be carried out and compared 2 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 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 ...

Page 79: ...til a fairly good matching set of values are obtained Adjust the SBO attenuator for the other Tx to the same setting Remove the 90 stub 2 3 2 DDM field check Set the localizer to normal radiation From the centreline of the opposite threshold determine points perpendicular to the CL 105 meter to both sides of the runway Use the NM3710 with portable antenna and measure DDM at these points The readin...

Page 80: ...justment 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 2 6 DC Loop adjustment and testing 2 6 1 DC LOOP adjustment The DC loop cable fault monitor alignment is carried out accordingly to the procedure...

Page 81: ... ...

Page 82: ...d point as far as possible along the extended centreline not less than approx imately 3000 m from the antenna array On each LPDA utilise the top horizontal line composed of the two half sections of the radome to point toward the fixed point If necessary adjust the LPDA horizontally by adjusting the mast supports on the front mast so that the extended radome top line ends at the fixed point 3 2 Ele...

Page 83: ... course transmitter With the clearance transmitter on repeat the phasing procedure now adjusting the clearance SBO phaser associated with Tx to air 3 2 3 Antenna cable lengths Electrical phase equality Each antenna cable should be electrically checked before the end connector is terminated in the LPDA Utilise a vector voltmeter or network analyser Establish antenna cable A1 leftmost seen from rear...

Page 84: ...A12 ADU Take a note of the DDM reading Carry out this procedure until all antenna pairs DDM readings have been noted If any antenna pair measures DDM different from zero one of the antenna pair feed cable lengths should be trimmed in order to bring the DDM reading to zero If the DDM reading is positive 150 Hz dominance the antenna cable at the right hand side A7 A12 should be trimmed The sensitivi...

Page 85: ...se 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 3 2 Figure 3 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 ϕ 9 DDM1 DDM1 DDM3 ϕ 9 4 3 4 3 2 0 4 8 ...

Page 86: ...network analyser in a test set up Figure 3 3 Measure return loss for each LPDA Measure and record in Ground Commissioning Record the return loss value for each LPDA including antenna cable Tolerance 20 dB minimum Figure 3 3 Antenna return loss measurement set up 3 3 Course sector width adjustment The required course sector width CS can be pre adjusted by two methods 1 DDM measurement of ADU antenn...

Page 87: ...learance transmitter Insert the 90 stub into the course SBO path Connect a directional coupler with 50Ω load to antenna O P A3 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 wi...

Page 88: ...asure DDM at these points The read ings should be close to 15 5 at the 90 side and 15 5 at the 150 side However some unsymmetry may be expected due to reflections and tolerances in the antenna system Check the CL DDM at two or three positions in order to estimate an average value Expected value 0 0 0 2 DDM 3 4 Monitor combining unit MCU adjustments 3 4 1 Course Line Connect the Field Test Set to t...

Page 89: ...C Loop adjustment and testing 3 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 3 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...

Page 90: ... as far as possible along the extended centreline not less than approx imately 3000 m from the antenna array On each LPDA utilise the top horizontal line composed of the two half sections of the radome to point toward the fixed point If necessary adjust the LPDA horizontally by adjusting the mast supports on the front mast so that the extended radome top line ends at the fixed point 4 2 Electrical...

Page 91: ...ransmitter With the clearance transmitter on repeat the phasing procedure now adjusting the clearance SBO phaser associated with Tx to air 4 2 3 Antenna cable lengths Electrical phase equality Each antenna cable should be electrically checked before the end connector is terminated in the LPDA Utilise a vector voltmeter or network analyser Establish antenna cable A1 leftmost seen from rear return p...

Page 92: ...is can be tested by moving the test antenna a few meters back and fourth while observing the DDM reading If the value is not changing then the measurement position is OK Take a note of the DDM reading first from antenna pair A1 A24 Connect pair A2 A23 to ADU outputs A2 A23 and disconnect pair A1 A24 dummyload A1 A24 ADU Take a note of the DDM reading Carry out this procedure until all antenna pair...

Page 93: ...hase and amplitude transfer measurement set up Measure relative transfer phase and amplitude for each Antenna Monitor return cable in ref erence to A1 M1 Pair µA DDM 6 DDM 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 9 7 1 00 A8 A17 7 9 0 82 A9 A16 6 2 0 64 A10 A15 4 4 0 45 A11 A14 2 6 0 27 A12 A13 0 9 0 09 20dB A B VECTOR VOLTMETER...

Page 94: ...ch LPDA Measure and record in Ground Commissioning Record the return loss value for each LPDA including antenna cable Tolerance 20 dB minimum Figure 4 3 Antenna return loss measurement set up 4 3 Course sector width adjustments 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 car...

Page 95: ...d to antenna O P A3 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 p...

Page 96: ...side However some unsymmetry may be expected due to reflections and tolerances in the antenna system Check the CL DDM at two or three positions in order to estimate an average value Expected value 0 0 0 2 DDM 4 4 Monitor combining unit MCU adjustments 4 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 4 4 2 Course Secto...

Page 97: ...loop cable fault monitor alignment is carried out accordingly to the procedure described in Monitor Alignment and Calibration chapter 4 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 Disco...

Page 98: ...ermine a fixed point as far as possible along the extended centreline not less than approx imately 3000 m from the antenna array On each LPDA utilise the top horizontal line composed of the two half sections of the radome to point toward the fixed point If necessary adjust the LPDA horizontally by adjusting the mast supports on the front mast so that the extended radome top line ends at the fixed ...

Page 99: ...rse transmitter With the clearance transmitter on repeat the phasing procedure now adjusting the clearance SBO phaser associated with Tx to air 5 2 3 Antenna cable lengths Electrical phase equality Each antenna cable should be electrically checked before the end connector is terminated in the LPDA Utilise a vector voltmeter or network analyser Establish antenna cable A1 leftmost seen from rear ret...

Page 100: ...h while observing the DDM reading If the value is not changing then the measurement position is OK Take a note of the DDM reading first from antenna pair A1 A16 Connect pair A2 A15 to ADU outputs A2 A15 and disconnect pair A1 A16 dummyload A1 A16 ADU Take a note of the DDM reading Carry out this procedure until all antenna pairs DDM readings have been noted If any antenna pair measures DDM differe...

Page 101: ... set 3 Note the new DDM value This value should have oposite polarity compared to the value without the adaptor 4 Calculate the corresponding phase error electrical degrees from the formula DDM1 DDM measured in item 1 DDM3 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 Example 2 Item 1 A6 A7 0 6 DDM Item 3 A6 A7 MF 1 86 DDM MF i...

Page 102: ...ng in the LPDA monitor circuit or connector cable Record the final result in Ground Commissioning Record 5 2 6 Antenna return loss Utilise a vector voltmeter or network analyser in a test set up Figure 5 3 Measure return loss for each LPDA Measure and record in Ground Commissioning Record the return loss value for each LPDA including antenna cable Tolerance 20 dB minimum Figure 5 3 Antenna return ...

Page 103: ...BO is adjustable by the SBO attenuator in the cabinet γ is 0 when the 90 stub is inserted into the SBO and clearance transmitter is switched off For each course sector width CS of the array a set of corresponding DDM values exists unique for each antenna O P For CS 4 For other CS values use the formula Example A3 DDM for CS 3 5 PROCEDURE Turn off the clearance transmitter Insert the 90 stub into t...

Page 104: ...SBO attenuator in the cabinet associ ated with Tx to air until a reading of 43 6 SDM is obtained Carry out the same procedure for the other transmitter 5 3 3 DDM field check Set the localizer to normal radiation clearance transmitter on From the centreline of the opposite threshold determine points perpendicular to the CL 105 meter to both sides of the runway Use the NM3710 with portable antenna a...

Page 105: ... 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 5 6 DC Loop adjustment and testing 5 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 5 6 2 Antenna fault condition...

Page 106: ...elements heights Antenna elements offsets Near field monitor antenna distance and height Threshold data 6 1 2 Forward shift FWD The antennas should be vertically offset to compensate for forward slope FSL See Section 1 Chapter 3 6 3 6 1 3 Antenna heights Antenna heights shall be referenced to the intercept point of the terrain slope and the GP mast In addition rf wave penetration a few centimetres...

Page 107: ...6 1 Cable phasing measurement set up 6 2 2 Monitor return cable length Measure return phase as described in 52 0 for both monitor cables Check that initial values are within 1 5 true phase 3 0 return phase 6 2 3 Phase and amplitude transfer measurement Connect each antenna cable and monitor cable to Antenna load and source respectively Uti lise a vector voltmeter or network analyser in a test set ...

Page 108: ...rk analyser in a test set up Figure 6 3 Measure return loss for each Antenna Measure and record in Ground Commissioning Record the return loss value for each Antenna including antenna cable Tolerance 20 dB minimum Figure 6 3 Antenna return loss measurement set up 6 3 CSB SBO Phasing and sector width adjustment See Figure 6 4 6 3 1 CSB SBO phasing A 180 hybrid can be utilised to adjust preset the p...

Page 109: ...r transmitter 6 3 2 Sector Width adjustment Figure 6 4 test set up is used Remove the 90 stub The NM3710 DDM should be 23 4 If necessary adjust the SBO attenuator of associated transmitter in the Cabinet to obtain 23 4 DDM Carry out the same procedure for the other transmitter 127 7R FRPSHQVDWH IRU D VORSLQJ WHUUDLQ LQ IURQW RI WKH 3 WKH 0 DFFRUGLQJO VKRXOG EH where θ0 is the glide path angle FSL ...

Page 110: ...output of the MCU Adjust the MCU attenuator at A2 to obtain 17 5 DDM 6 5 Location of near field antenna position According to site data slope etc the theoretical position of the NF antenna should be calcu lated 6 5 1 Near Field Monitor Position Search Install the NF antenna at the position according to calculations distance and height Adjust the height to obtain 0 DDM reading on the Field Test Set...

Page 111: ... ...

Page 112: ... heights Antenna elements offsets Near field monitor antenna distance and height Threshold data 7 1 2 Forward shift FWD The antennas should be vertically offset to compensate for forward slope FSL See Section 1 Chapter 3 6 3 7 1 3 Antenna heights Antenna heights shall be referenced to the intercept point of the terrain slope and the GP mast In addition rf wave penetration a few centimetres into th...

Page 113: ...e length Measure return phase as described in 62 0 for both monitor cables Check that initial values are within 1 5 true phase 3 0 return phase 7 2 3 Phase and amplitude transfer measurement Connect each antenna cable and monitor cable to Antenna load and source respectively Uti lise a vector voltmeter or network analyser in a test set up Figure 7 2 and measure relative transfer phase and amplitud...

Page 114: ... for each Antenna Measure and record in Ground Commissioning Record the return loss value for each Antenna including antenna cable Tolerance 20 dB minimum Figure 7 3 Antenna return loss measurement set up 7 3 CSB SBO Phasing 7 3 1 CSB and SBO cables The CSB and SBO cable between NM3531 cabinet and MCU must be of equal electrical length Utilise a vector voltmeter or network analyser in a test set u...

Page 115: ... DFFRUGLQJO VKRXOG EH where θ is the glide path angle FSL is forward slope negative for falling terrain referred from the GP Repeat the SBO attenuator adjustment for the second transmitter 7 5 Monitor combining unit MCU adjustments 7 5 1 Procedure for horizontal terrain FSL 0 Connect the Field Test Set to the CL output of the MCU Adjust the MCU phaser at A1 lower antenna to read 0 DDM Remove the 9...

Page 116: ...ical position of the NF antenna should be calcu lated Install the NF antenna at the position according to calculations distance and height Adjust the height to obtain 0 DDM reading on the Field Test Set connected to the NF monitor cable Ladder and personnel must be vacated from the NF area FSL K3 mm K4 mm DS DDM 1 0 27 18 10 3 0 9 23 15 10 1 0 8 19 13 9 9 0 7 16 11 9 7 0 6 13 9 9 5 0 5 11 7 9 4 0 ...

Page 117: ... WKH 1 SRVLWLRQ DUH QRUPDOLVHG L H 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 180 position as denoted below 127 KHQ PRYLQJ WKH 1 DQWHQQD SRVLWLRQ EDFNZDUG DQG IRUZDUG ...

Page 118: ...connector to the 20 dB attenuator Connect the vector voltmeter A probe to the directional coupler s forward O P 7 7 2 Procedure 1 Connect the cable TEST SIG throughput from the directional coupler to the ADU SBO I P Connect the B probe to L O P Note the B probe RF level dB 0 1 dB resolution Move the B probe to U O P If necessary adjust phaser PH1 AMPLITUDE ADJ to obtain 0 0 dB difference reference...

Page 119: ...e 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 2 3 DQG PHDVXUH DJDLQ WKH 8 SKDVH 5HSHDW XQWLO SKDVH GLIIHUHQFH LV DFKLHYHG End of check ...

Page 120: ...hts Antenna elements offsets Near field monitor antenna distance and height Threshold data 8 1 2 Forward shift FWD The antennas should be vertically offset to compensate for forward slope FSL See Section 1 Chapter 3 6 3 8 1 3 Antenna heights Antenna heights shall be referenced to the intercept point of the terrain slope and the GP mast In addition rf wave penetration a few centimetres into the soi...

Page 121: ...n cable length Measure return phase as described in 72 0 for all three monitor cables Check that initial values are within 1 5 true phase 3 0 return phase 8 2 3 Phase and amplitude transfer measurement Connect each antenna cable and monitor cable to Antenna load and source respectively Uti lise a vector voltmeter or network analyser in a test set up Figure 8 2 and measure relative transfer phase a...

Page 122: ...oning Record the return loss value for each Antenna including antenna cable Tolerance 20 dB minimum Figure 8 3 Antenna return loss measurement set up 8 3 CSB SBO Phasing 8 3 1 CSB and SBO cables The CSB and SBO cable between NM3531 cabinet and MCU must be of equal electrical length Utilise a vector voltmeter or network analyser in a test set up as in Figure 8 1 Measure open cable return phase for ...

Page 123: ... be where θ is the glide path angle FSL is forward slope negative for falling terrain referred from the GP Repeat the SBO attenuator adjustment for the second transmitter 8 5 Monitor combining unit MCU MOA 338D adjustments Monitor Combining Unit MOA338D is equipped with plug in attenuators dependent upon for ward slope according to the following table AT6 is common for all FSL Make sure that corre...

Page 124: ...er Check that sufficient 150Hz dominance remains 8 6 Location of near field antenna position According to site data slope etc the theoretical position of the NF antenna should be calcu lated Install the NF antenna at the position according to calculations distance and height Adjust the height to 0 DDM reading on the Field Test Set connected to the NF monitor cable Ladder and personnel must be remo...

Page 125: ...WKHRUHWLFDO YDOXHV Based on the comparing results then determine the best correlated position for the NF monitor antenna 8 7 Antenna distribution unit ADU DIA 346A phase and amplitude check 7KLV FKHFN LV RSWLRQDO I LW LV FDUULHG RXW LW VKRXOG SUHIHUDEO EH H HFXWHG SULRU WR VWHS 8 7 1 Preparation Use a vector voltmeter in a test set up figure 8 4 Figure 8 4 Test set up for ADU Phase and Amplitude c...

Page 126: ... G GLIIHUHQFH LV DFKLHYHG 2 Connect the cable TEST SIG to the SBO input Connect the B probe to U output Note the level Move the B probe to the L output If necessary adjust phaser D3 to obtain 0 0 dB difference referenced to U output 127 I KDV EHHQ DGMXVWHG UHFKHFN WKH UHIHUHQFH OHYHO IURP 8 RXWSXW DQG PHDVXUH DJDLQ WKH RXWSXW OHYHO 5HSHDW XQWLO G GLIIHUHQFH LV DFKLHYHG 3 Connect the B probe to M o...

Page 127: ...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 same phase as in f ...

Page 128: ... 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 Measure the return loss value for the LPDA including antenna cable Tolerance 22 dB minimum Figure 9 1 Antenna return loss measurement set up 20dB A B VECTOR VOLTMETER DIR COUPL Antenna cable under test Antenna From Marker Dir coupler ...

Page 129: ... ...

Page 130: ...he measurements Always use a 20 dB attenuator at the I P of the directional coupler in Fig 1 2 and 3 10 2 1 Antenna cable lengths Electrical phase equality Each antenna cable must be electrically measured before the end connector is terminated in the LPDA Utilise a vector voltmeter or network analyser Establish antenna cable A1 return phase as 0 reference phase Measure return phase for the other a...

Page 131: ...igure 10 2 and measure relative transfer phase and amplitude for the antenna cable A2 in reference to antenna A1 Figure 10 2 Phase and amplitude transfer measurement set up Measure and record phase amplitude for each antenna Then determine if one of the monitor cables must be trimmed in order to comply with phase tolerance for the set of cables Tolerance 3 Amplitude tolerance 1 0 dB If the amplitu...

Page 132: ... ...

Page 133: ... Tone Modulation Depth 10 1 2 9 RF Frequency Adjustment 10 1 3 Antenna System Adjustments 10 1 4 Monitor Alignment and Calibration 11 1 4 1 General 11 1 4 2 RF Input Level Adjustment 11 1 4 3 AGC Time Adjustment 12 1 4 4 SDM Adjustment 12 1 4 5 DDM Adjustment 12 1 5 Monitor Alarm Setting Procedure 13 1 6 Maintenance Limit Adjustments 14 1 7 Adjustment points 15 2 Tests and adjustments marker beaco...

Page 134: ...1250 5 167580 17 1 1 6 67 0 167 7 21 200 66 21 1 1 22 1DYLD YLDWLRQ 6 ...

Page 135: ...f 2 voting Strap OUT 2 of 2 voting default 5 Strap IN Lost contact with remote control will NOT turn off transmitters Strap OUT Lost contact with remote control will turn off transmitters default 6 Strap IN WRITE DISABLE switch in horizontal position generate service con dition default Strap OUT WRITE DISABLE switch in horizontal position does not generate ser vice condition 7 Strap IN Grant deny ...

Page 136: ...lowed Jumper out means that access level is denied The table below shows which jumpers are connected to different ports and access levels Table 1 2 Access level strap settings 1 1 3 Warning Configuration Use the RMM Program to configure which warnings shall cause system warning i e illuminate the RC main warning lamp 1 2 Transmitter Alignments and Calibration TEST EQUIPMENT REQUIRED Oscilloscope g...

Page 137: ...led PHASE CORR located on the transmitter modules 127 6HW WKH VFRSH V LQSXW PRGH WR The waveform observed should take a continuous form without limiting segments or deep notches or other dis continuities Each modulator developes it s own waveform shape due to spreads in insertion phases The dynamic maximum point should be adjusted to approximately 4 volt The average operating point of the PHASE CO...

Page 138: ...re 1 2 A significant indication of correct LF phase is that the pair of the intermediate peaks are equal in amplitude Figure 1 3 shows the corresponding SBO waveforms for normal and 10º LF phase error respectively 1 2 3B LF Phase Adjustment Two frequency system Connect oscilloscope channel A to the BNC test connector labelled CSB located on LPA GPA Course 1 2 Connect oscilloscope channel B to the ...

Page 139: ...1223A observing oscillocope channel B until the waveform equals left hand graph in Figure 1 2 A significant indication of correct LF phase is that the pair of the intermediate peaks are equal in amplitude Figure 1 2 LF phase CSB illustration Figure 1 3 LF phase SBO illustration 1 2 4 RF Power Balance Adjustment Connect the oscilloscope to the BNC test connector labelled SBO located on the transmit...

Page 140: ...k on the first half and tracks the envelope waveform Kissing pattern method RF Power Balance can be adjusted by potentiometer RF BAL on the back of the LPA GPA Adjust until both halvs fall on the same envelope waveform or the two largest sets of peak waveforms fall on lines paralell to the baseline 1 2 5 RF Phase at Combiner I P Connect the oscilloscope to the BNC test connector labelled SBO locat...

Page 141: ...of the Field Test Set in order to avoid overloading DDM should be calibrated to 0 0 0 05 DDM by adjusting DDM from the RMM Program or the Local Display Keyboard 1 2 7 1 TEST DDM Setting TEST DDM with 90Hz or 150Hz dominance can be switched on and off from the RMM Pro gram or the Local Display Keyboard The DDM values inserted by TEST DDM are preset val ues which is set as described below a 90 Hz do...

Page 142: ...rm Then switch off the 150 Hz modulation and switch the 1020 Hz modulation to CONTINUOUS For mod Depth 10 The observed 1020 Hz peak to peak waveform amplitude should be 50 of the 150 Hz amplitude 1 2 9 RF Frequency Adjustment Fine adjustment of the operating frequency can be carried out by adjusting C1 in the OS1221A B RF Oscillator module The top cover must be removed Set the OS1221A B on an exte...

Page 143: ...r channels has numbers R1338 R2338 and R3338 for CL CLR and NF channels Before any monitor adjustments are attempted the following procedures shall be completed Transmitter calibrations Network alignments It is imperative for the result that the signals from the Monitor Combining Network MCU are correct Check these signals with the NM3710 Field Test Set It will be these signals which we use for al...

Page 144: ...t Turn on the transmitters Make a note of the AGC voltages on TP 1 2 3 and 4 on MF12xx Turn off the transmitters Adjust the AGC TIM potmeter on the front of MF12xx until the AGC voltage TP1 2 3 or 4 is the same as with a nominal RF input Do this for all four monitor channels on all of the MF12xx modules in the system This ensures fast response from the monitors 1 4 4 SDM Adjustment Adjust the SDM ...

Page 145: ...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 Only for single frequency ILS For two frequency ILS the limit is 1dB CL DS NF CLR DDM 15uA 25uA 15uA 40uA CAT I SDM 4 4 RF level 3dB 1dB LLZ DDM 11uA 25uA 11uA 40uA CAT II SDM 4 4 RF level 3dB 1dB DDM 9uA 25uA 9uA 40uA CAT III SDM 4 4 RF level 3dB...

Page 146: ...it Adjustments Use the RMM Program to set maintenance warning limits in the system All new systems will have factory preset maintenance warning limits Maintenance warning limits can not be set from the Local Display Keyboard CL DS NF CLR DDM see annex 10 37uA 18 5uA 35uA 45uA CAT I SDM 5 5 RF level 3dB 1dB GP DDM see annex 10 37uA 18 5uA 35uA 45uA CAT II SDM 5 5 RF level 3dB 1dB DDM see annex 10 3...

Page 147: ...VERRIDE MAINT STBY OFF REMOTE LOCAL AUTO MANUAL OVER CHANGE TX1 ALARM SERVICE PARAM DISAGR BATT IDENT TX1 TX2 TX2 STAND BY Mon 1 Mon 2 Mon stby 90Hz COU phase adj 150Hz COU phase adj 90Hz CLR phase adj 150Hz CLR phase adj TX1 TX2 NF SDM adj NF AGC time constant adj NF RF level adj CL SDM adj CL AGC time constant adj CL RF level adj CLR SDM adj CLR AGC time constant adj CLR RF level adj DS SDM adj ...

Page 148: ... adjustment point TEMP INDOOR TEMP OUTDOOR AC LEVEL ANALOG CH 1 ANALOG CH 2 ANALOG CH 3 DIGITAL PORT A DIGITAL PORT B DIGITAL PORT C DIGITAL PORT D TO MB1203 RS232 RS232 RS232 REMOTE CONTROL DC LOOP DC LOOP DME LOCAL REMOTE 2 REMOTE 1 CH 1 2 CH 3 4 CI1210A BATTERY WARNING Battery protection level adj HBK697 1 ...

Page 149: ...21 200 66 21 1 1 22 Figure 1 10 Power Amplifier Assembly adjustment points rear view PH OFFS G150Hz RF BAL G90Hz DC OSC SBO CSB FREMDRIFT RF PHASE Phase feedback offset adj DC offset adj RF balance adj 90Hz mod adj 150 Hz mod adj RF phase adj HBK696 1 ...

Page 150: ...1250 5 167580 17 1 1 6 67 0 167 7 21 200 66 21 1 1 22 1DYLD YLDWLRQ 6 ...

Page 151: ...the configurations in the Marker Beacon according to desired sys tem configuration 2 1 2 1 General Configuration The static control strap on the Connection interface board sets hardware configuration remote access configuration and shutdown configuration Figure 2 1 shows where the static control strap is located on CI 1376 Figure 2 1 Location of Static Control Strap on CI 1376 DIG PORT A DIG PORT ...

Page 152: ...nsmit S6 and S7 decides the highest access level permitted on the RMM remote port All access levels are available on the RMM local port regardless of S6 and S7 2 1 2 2 Setting inner outer or middle marker To configure the beacon for outer middle or inner marker set the straps S1 S4 on the trans mitter board s according to Table 2 2 Strap no State Function S1 Strap IN 2 power supplies NM 7050 B D S...

Page 153: ...on Figure 2 2 shows where the straps are located on the transmitter board s Figure 2 2 Location of Marker Beacon type straps on transmitter board Strap Function when strap is in S1 Beacon is INNER marker S2 Beacon is MIDDLE marker S3 Beacon is OUTER marker S4 Beacon is FAN marker S1 S2 S3 S4 TX 1373 HBK798 1 ...

Page 154: ...nom 27 4V 20 C 2 Bias for power transistor use factory settings 3 Battery protection cut off voltage nom 22V 4 Tx Detected Rf level nom 2 5V 4W carrier 5 Monitor RF level nom 3V nominal output power 6 Monitor frontend input filter centre frequency use factory settings 7 Real time clock fine tuning use factory settings The adjustment points marked Use Factory Settings should not be touched The base...

Page 155: ...a 50Ω load antenna or dummy load If this is an Inner Marker make sure the external attenuator 10dB is installed inside the Cabinet at the Tx output Start the RMM program on the PC see chapter 10 Open the TX settings window RF level for TX1 and TX2 are to be adjusted Open the Maintenance window RF level for TX1 and TX2 are to be watched Set Local mode with the Remote Local switch Set Manual mode wi...

Page 156: ...ef fig 2 4 If this is impossible to achieve try another strap setting and readjust R850 Figure 2 4 Input Signal attenuator 2 4 Other adjustments These adjustments are normally not required the factory settings should be sufficient 2 4 1 Output power readout calibration The Carrier Power parameter in the RMM Maintenance window is the internal wattmeter It is factory calibrated but may be recalibrat...

Page 157: ...s rule is not followed To meet the demand the internal battery charger s in NM 7050 the PS 1375 has a temperature compensated charging voltage Due to current limiting in PS 1375 a discharged battery will firstly be charged with a constant current 2A with one PS1375 and 6A with two PS1375 When the battery draws less than the current limit the battery will be charged with a constant voltage UBATT Th...

Page 158: ...1250 5 167580 17 1 1 6 67 0 167 7 21 200 66 21 1 1 22 1DYLD YLDWLRQ 6 ...

Page 159: ...50 5 9 1DYLD YLDWLRQ 6 1 6758 0 17 1 1 6 67 0 167 7 21 200 66 21 1 1 22 SECTION 5 GROUND COMMISIONING REFERANCE DOCUMENTS Table of Contents NM7000 LOCALIZER 2 NM7000 GLIDE PATH 11 NM7050 MARKER BEACON 18 ...

Page 160: ...6 21 1 1 22 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 ...

Page 161: ...ad DDM and SDM 1 3 1 10 COURSE AND CLEARANCE SECTIONS Connect the Frequency Counter use 50Ω input port to COURSE RF BNC test point and CLEARANCE RF BNC test point of Cabinet Coaxial section respectively Use keypad CHANGE OVER to alternate between Tx 1 and Tx2 1 4 1 5 Connect the Frequency Counter use HI imp input port CSB BNC test point on Transmit ter section LPA1230 Switch off IDENT modulation 9...

Page 162: ...alues obtained from Flight Commissioning Data 4 8 4 11 Record relevant phaser settings scale divisions 4 9 is ADU SBO attenuator setting for NM3522 only 5 1 5 24 Fill in phase and amplitude of signals from the receiving end of the monitor cables refer enced to the input phase amplitude of the antenna cables Normalise to A1 M1 Fill in antenna return loss data in column Return loss 6 1 6 9 Check tha...

Page 163: ...1250 5 9 1DYLD YLDWLRQ 6 167580 17 1 1 6 67 0 167 7 21 200 66 21 1 1 22 11 0 Make a file copy to diskette of the NM70xx ILS Configuration file ...

Page 164: ...1 2 CSB SDM 39 5 40 5 1 3 CARRIER FREQ F 2 2 kHz MHz MHz 1 4 MOD 90Hz 89 9 90 1 Hz Hz Hz 1 5 MOD 150 Hz 149 9 150 1 Hz Hz Hz 1 6 IDENT 1020 Hz 1010 1030 Hz Hz Hz 1 7 IDENT MOD 9 11 ITEM PARAMETER LIMITS Tx1 Tx2 1 8 CSB DDM 0 1 0 1 1 9 CSB SDM 39 5 40 5 1 10 CARRIER FREQ F 2 2 kHz MHz MHz 1 11 IDENT 1020 Hz 1010 1030 Hz Hz Hz 1 12 IDENT MOD 9 11 1 13 Battery charge voltage 26 4 27 0V V ITEM PARAMET...

Page 165: ... Tx 1 COU Tx 2 CLR Tx 1 CLR Tx 2 3 1 CSB LF 3 2 SBO LF 3 3 PHASE CORR ITEM PARAMETER Tx1 Tx2 4 1 COU SBO attenuator Normal dB dB 4 2 COU SBO attenuator Wide Alarm dB dB 4 3 COU SBO attenuator Narrow Alarm dB dB 4 4 CLR SBO attenuator Normal dB dB 4 5 CLR SBO attenuator Wide Alarm dB dB 4 6 COU SBO phaser div div 4 7 CLR SBO phaser div div ITEM PARAMETER 4 8 CL phaser div 4 9 SBO attenuator NM3522 ...

Page 166: ...sfer Ampli tude transfer Return loss 5 1 1 dB dB 5 2 2 dB dB 5 3 3 dB dB 5 4 4 dB dB 5 5 5 dB dB 5 6 6 dB dB 5 7 7 dB dB 5 8 8 dB dB 5 9 9 dB dB 5 10 10 dB dB 5 11 11 dB dB 5 12 12 dB dB 5 13 13 dB dB 5 14 14 dB dB 5 15 15 dB dB 5 16 16 dB dB 5 17 17 dB dB 5 18 18 dB dB 5 19 19 dB dB 5 20 20 dB dB 5 21 21 dB dB 5 22 22 dB dB 5 23 23 dB dB 5 24 24 dB dB ...

Page 167: ...ARAMETER RCU CHECK 6 1 TX ON OFF 6 2 CHANGE OVER 6 3 ALARM SILENCE 6 4 PARAM WARNING 6 5 DISAGR WARNING 6 6 BATT WARNING 6 7 IDENT WARNING 6 8 MAINT WARNING 6 9 STBY WARNING ITEM PARAMETER SLAVE CHECK 7 1 TX ON OFF 7 3 ALARM SILENCE 7 4 ALARM 7 5 NORMAL 7 6 WARNING ITEM DEVICE CHECK 8 1 90 cable w frequency label 8 2 2 pcs different extension cards ...

Page 168: ...p Test ITEM ANTENNA DLØ DL1 DL2 DL3 NO Mon 1 Mon 2 Mon 1 Mon 2 Mon 1 Mon 2 Mon 1 Mon 2 9 1 A1 9 2 A2 9 3 A3 9 4 A4 9 5 A5 9 6 A6 9 7 A7 9 8 A8 9 9 A9 9 10 A10 9 11 A11 9 12 A12 9 13 A13 9 14 A14 9 15 A15 9 16 A16 9 17 A17 9 18 A18 9 19 A19 9 20 A20 9 21 A21 9 22 A22 9 23 A23 9 24 A24 ...

Page 169: ...6 21 1 1 22 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 ...

Page 170: ...point and CLEARANCE RF BNC test point of Cabinet Coaxial section respectively Use keypad CHANGE OVER to alternate between Tx 1 and Tx 2 Read DDM and SDM 1 3 1 10 COURSE AND CLEARANCE SECTIONS Connect the Frequency Counter use 50Ω input port to COURSE RF BNC test point and CLEARANCE RF BNC test point of Cabinet Coaxial section respectively Use keypad CHANGE OVER to alternate between Tx 1 and Tx2 1 ...

Page 171: ...r values obtained from Flight Commissioning Data 4 8 4 11 Record relevant phaser settings scale divisions 4 12 4 13 Record GP and SW attenuator settings 4 14 4 16 Record PH1 PH2 PH3 phaser settings 5 1 5 24 Fill in phase and amplitude of signals from the receiving end of the monitor cables refer enced to the input phase amplitude of the antenna cables Normalise to A1 M1 Fill in antenna return loss...

Page 172: ... CSB DDM 0 2 0 2 1 2 CSB SDM 79 0 81 0 1 3 CARRIER FREQ F 5 0 kHz MHz MHz 1 4 MOD 90Hz 89 9 90 1 Hz Hz Hz 1 5 MOD 150 Hz 149 9 150 1 Hz Hz Hz 1 6 Not applicable 1 7 Not applicable ITEM PARAMETER LIMITS Tx1 Tx2 1 8 CSB DDM 39 8 40 2 1 9 CSB SDM 79 0 81 0 1 10 CARRIER FREQ F 5 0 kHz MHz MHz 1 11 Not applicable 1 12 Not applicable 1 13 Battery charge voltage 26 4 27 0V V ITEM PARAMETER Tx 1 to Antenn...

Page 173: ... Tx 1 CLR Tx 2 3 1 CSB LF 3 2 SBO LF 3 3 PHASE CORR ITE M PARAMETER Tx1 Tx2 4 1 COU SBO attenuator Normal dB dB 4 2 COU SBO attenuator Wide Alarm dB dB 4 3 COU SBO attenuator Narrow Alarm dB dB 4 4 Not applicable dB dB 4 5 Not applicable dB dB 4 6 Not applicable div div 4 7 Not applicable div div ITE M PARAMETER div 4 8 CSB Power Divider D1 div 4 9 SBO Power Divider D2 div 4 10 SBO Power Divider D...

Page 174: ...13 SW Attenuator dB 4 14 Upper Antenna Phaser PH1 div 4 15 Middle Antenna Phaser PH2 div 4 16 Course Cancellation Phaser PH3 div ITE M ANT No Phase transfer Ampli tude transfer Return loss 5 1 1 Lower d B dB 5 2 2 Middle d B dB 5 3 3 Upper d B dB ITE M PARAMETER RCU CHECK 6 1 TX ON OFF 6 2 CHANGE OVER 6 3 ALARM SILENCE 6 4 PARAM WARNING 6 5 DISAGR WARNING 6 6 BATT WARNING 6 7 IDENT WARNING 6 8 MAI...

Page 175: ... 167 7 21 200 66 21 1 1 22 7 0 Slave panel functions 8 0 Accessories ITE M PARAMETER SLAVE CHECK 7 1 TX ON OFF 7 3 ALARM SILENCE 7 4 ALARM 7 5 NORMAL 7 6 WARNING ITE M DEVICE CHECK 8 1 90 cable w frequency label 8 2 2 pcs different extension cards ...

Page 176: ...7 1 1 6 67 0 167 7 21 200 66 21 1 1 22 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 ...

Page 177: ...rve the keying code Switch to Tx 2 and repeat the procedure 1 3 With Tx 1 switched on connect a frequency counter to TP 704 on TX1373A Set Tx 1 mod ulation to CONTINUOUS MODULATION and read Tx 1 modulation frequency Change to transmitter 2 and set Tx 2 modulation to CONTINUOUS MODULATION Record Tx 2 modulation frequency 1 4 Set Tx 1 in normal operation read the Modulation Depth value from Monitor ...

Page 178: ...d 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 4 1 4 10 Check that all remote control functions are OK 5 1 5 7 Check that all remote control functions are OK 6 1 Check that 2 pcs different extension cards exist ...

Page 179: ...z MHz MHz 1 2 Keying code 1 3 Modulation tone fre quency f 2 5 4 Hz Hz 1 4 Modulation depth Reading from Moni tor 1 2 95 1 5 RF Power to antenna W W ITEM PARAMETER LIMITS SETTING 2 1 Power alarm 3 dB W 2 2 Modulation depth alarm Minimum 50 2 3 Keying failure alarm ITEM ANTENNA NO RETURN LOSS 3 1 1 dB 3 2 2 dB ITEM PARAMETER RCU CHECK 4 1 TX ON OFF 4 2 CHANGE OVER 4 3 ALARM SILENCE 4 4 PARAM WARNIN...

Page 180: ...6 67 0 167 7 21 200 66 21 1 1 22 5 0 Slave panel functions 6 0 Accessories ITEM PARAMETER SLAVE CHECK 5 1 TX ON OFF 5 3 ALARM SILENCE 5 4 ALARM 5 5 NORMAL 5 6 WARNING 5 7 INTERLOCK SWITCH ITEM DEVICE CHECK 6 1 2 pcs different extension cards ...

Page 181: ... 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 6 Diagram 6 GP angle vs relative antenna height NM3545 7 Diagram 7 GP angle vs relative antenna height NM3544 8 Diagram 8 GP angle vs relative antenna height NM3543 9 SPINNER cable connector installation instructions ...

Page 182: ...1250 5 1DYLD YLDWLRQ 6 167580 17 1 1 6 67 0 167 7 21 200 66 21 1 1 22 Diagram 1 Relative SBO vs CS Width NM3522 2 5 2 1 5 1 0 5 0 0 5 1 1 5 4 4 5 5 5 5 6 6 5 Course Sector Width Relative SBO dB ...

Page 183: ...1250 5 1DYLD YLDWLRQ 6 167580 17 1 1 6 67 0 167 7 21 200 66 21 1 1 22 Diagram 2 Relative SBO vs CS Width NM3523B 3 5 3 2 5 2 1 5 1 0 5 0 0 5 1 3 5 4 4 5 5 5 5 6 Course Sector Width Relative SBO dB ...

Page 184: ...1250 5 1DYLD YLDWLRQ 6 167580 17 1 1 6 67 0 167 7 21 200 66 21 1 1 22 Diagram 3 Relative SBO vs CS Width NM3524 3 5 3 2 5 2 1 5 1 0 5 0 0 5 1 3 5 4 4 5 5 5 5 6 Course Sector Width Relative SBO dB ...

Page 185: ...0 5 1DYLD YLDWLRQ 6 167580 17 1 1 6 67 0 167 7 21 200 66 21 1 1 22 Diagram 4 Relative SBO vs CS Width NM3525 2 1 5 1 0 5 0 0 5 1 1 5 2 0 55 0 6 0 65 0 7 0 75 0 8 0 85 0 9 0 95 Sector Width Relative SBO dB ...

Page 186: ...YLD YLDWLRQ 6 167580 17 1 1 6 67 0 167 7 21 200 66 21 1 1 22 Diagram 5 Relative SBO vs CS Width GP antenna systems 2 1 5 1 0 5 0 0 5 1 1 5 2 0 55 0 6 0 65 0 7 0 75 0 8 0 85 0 9 0 95 Sector Width Relative SBO dB ...

Page 187: ...8 2 85 2 9 2 95 3 3 05 3 1 3 15 3 2 3 25 30 20 10 0 10 20 30 Lower antenna relative height cm Glide Path Angle Middle antenna cm x 2 Upper antenna cm x 3 GP angle Upper ant cm Lower ant cm 3 2 0 33 4 5 0 20 3 3 3 1 0 35 3 0 21 2 3 0 0 38 0 0 0 23 0 0 2 9 0 40 2 0 24 1 2 8 0 43 6 5 0 26 3 3 Relative Sideway Offset vs GP Angle ...

Page 188: ...ngle vs relative antenna height NM3544 2 8 2 85 2 9 2 95 3 3 05 3 1 3 15 3 2 3 25 15 10 5 0 5 10 15 Lower antenna relative height cm Glide Path Angle Upper antenna cm x 3 GP angle Lower ant cm 3 2 0 20 3 3 1 0 21 1 3 0 0 23 0 0 2 9 0 24 1 2 8 0 26 3 Relative Sideways Offset vs GP Angle ...

Page 189: ...e vs relative antenna height NM3543 2 8 2 85 2 9 2 95 3 3 05 3 1 3 15 3 2 3 25 20 15 10 5 0 5 10 15 20 Lower antenna relative height cm Glide Path Angle Upper antenna cm x 2 GP angle Lower ant cm 3 2 0 13 2 3 1 0 14 1 3 0 0 15 0 0 2 9 0 16 1 2 8 0 17 2 Relative Sideways Offset vs GP Angle ...

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