Selex Sistemi Integrati DMEH2 AVIATION SERVICES DME TRANSMITTER User Manual USERS MANUAL 1

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1.INSTALLATION, INTEGRATION AND CHECKOUT
1.1 Introduction
This section contains installation information for the independently located DME. If the DME is to be
collocated with VOR or ILS refer to the basic instructions in this section and to the installation instructions
for the VOR or ILS equipment. With respect to general requirements, a good VOR or ILS site will satisfy
the DME requirements as well. System performance must be verified by flight inspection. Figure 1-1
shows a typical DME site.
NOTE
After flight inspections and prior to use by pilots, it is mandatory that
the monitor be left in control of the facility and not in bypass.
1.2 Site Information
1.2.1 Site Selection
The signal radiated from the DME is affected by obstructions and terrain in the immediate vicinity of the
antenna and by obstructions and terrain within the service range of the station. An ideal site would be the
highest ground in the vicinity with level terrain, cleared of all objects for a radius of at least 3000 feet (915
meters), and with no obstructions extending above the horizontal plane of the antenna within the service
range of the station. In most localities, it is not possible to satisfy the ideal site requirements. Every effort
must be made to obtain the best site available. Although no absolute minimum requirements can be stated,
a site is normally acceptable if it meets the recommendations contained in the following paragraphs.
1.2.1.1 Terrain Features
The terrain should be level within a radius of 200 feet (61 meters). In a radius between 200 and 1000 feet
(61 and 305 meters), a downward slope is acceptable if (1) the rate of descent is not more than 4 feet in 100
feet (1.22 meters in 30.5 meters) and (2) contour lines are generally circular around the site. Beyond a
radius of 1000 feet (305 meters), terrain should be below the horizontal plane of the antenna.
1.2.1.2 Obstructions
There should be no structures within 750 feet (229 meters) of the antenna. Metallic structures should not
subtend vertical angles greater than 1.2 degrees as measured from the antenna. Wooden structures with
negligible metal content should not subtend vertical angles greater than 2.5 degrees as measured from the
antenna. Structures having considerable length (such as aircraft hangers or administration buildings)
should be situated lengthwise on a radial from the antenna. Single trees less than 35 feet (11 meters) high
may be tolerated beyond 750 feet. No group of trees or groves may be within 1000 feet. No overhead
power or control lines are permissible within 750 feet of the antenna.
Figure 1-1 Typical DME Site
1.2.2 Shelter Requirements
The shelter location depends primarily on the maximum cable run allowed and on the desired location for
the DME antenna. An RF transmission line of 2" foamflex cable (with Type N connectors at each end),
one cable for the monitor antenna made up of 1/4" foamflex (with a Type N connector at one end and a
TNC male connector at the opposite end), and one AC cable for the OB Lite may be supplied with the
DME equipment. These cables are 35 feet long. When the requirements exceed 35 feet, company
engineering personnel can provide the necessary planning to determine the requirements.
The DME ground equipment is designed to operate continuously and unattended, but space must be
allocated for maintenance personnel and their equipment.
1.3 Unpacking and Repacking
The DME electronic subsystem is shipped unassembled. Only general precautions can be given because
the crating and unpacking depends upon destination and what optional equipment is included. Most items
are packed separately in individual containers; these are then grouped for crating. Each crate contains a
packing list which details what equipment is enclosed in the crate. Unpack the equipment and visually
inspect each item for accuracy and damage, but DO NOT REMOVE any ESD protective wrapping.
Report any damage immediately. After inspection, repack each item to prevent damage. During
installation, unpack items as they are needed.
1.3.1 Environmental Considerations
The environmental conditions must not exceed those listed in the Specifications of Table 1-1 Error!
Reference source not found..
1.4 Input Power Requirement Summary
The requirements for input power must not exceed those listed in the Specification of Table 1-1 Error!
Reference source not found..
1.5 Installation Procedures
1.5.1 Installation Tools and Test Equipment
Refer to Error! Reference source not found.for a list of test equipment and Table 1-1 for a list of special
tools required for installation.
Table 1-1 Special Tools Required for Installation
Description
Tube Cutter
File
Knife
2-1/4" Hole Saw
Assorted Screw Drivers and Wrenches
Thread Tape
1.5.2 Installation Kits
Refer to Table 1-2 for all component or modification kits required to install the DME station. Some kits
listed are optional equipment. Kits ending with “X” have many different varieties and will vary depending
on the site specific requirements. In all necessary cases installation drawings for each kit are provided with
the kit hardware.
Table 1-2 Component or Modification Kits Required to Install the DME
Part Number
Description
470085-000X
470561-0001
470628-000X
470622-0001
470627-0001
470291-000X
470623-0001
470360-000X
DME Tower Antenna Kit
DME Unidirectional GS Tower Mount Antenna Kit
DME Battery Backup Kit, 35AHr
DME Accessory Kit
DME AC Power/Installation Kit
DME OB Light Kit
Environmental Sensors Kit
PMDT Kit
Table 1-3 Additional kits required to Install Shelter and Tower Grounding Systems
Part Number
470252-0002
470225-0001
470557-0001
Description
Civil Install Kit, 45G Rohn Tower
Civil Install Kit, Shelter
Shelter Internal Grounding Kit
1.5.3 Shelter Foundation Installation
For shelters not supplied by SELEX Sistemi Integrati Inc., the manufacturer of the shelter will supply
drawings for the site engineer.
1.5.4 Shelter Installation
a.
b.
Use a crane and four nylon slings (20 feet long) to position the equipment shelter on the four concrete
piers.
Attach the shelter to the pier anchor bolts using appropriate hardware.
1.5.5 Tower Foundation and Tower Installation
A triangular steel tower is available for use as a support for the DME antenna. Figure 1-2 shows the
installation details for this tower. Figure 1-3 illustrates the triangular tower adapter plate required to mount
the antenna to the DME tower.
1.5.6 Shelter and Tower Installation Grounding
a.
b.
c.
Install ground rods and ground wire as detailed in Figure 1-2 and Figure 1-4.
Install the 470557 Shelter Internal Grounding Kit per the drawing provided with the kit.
Verify the shelter grounding plate, AC wiring, lightning protection, RF tower, and telephone
equipment all share a common grounding potential. The impedance between any of these items should
be below 10Ω.
1.5.7 Air Conditioner Installation
If a wall mounted air conditioner is supplied, install the air conditioner in the wall opening and secure it in
place using bracket supplied. Apply silicon seal around air conditioner and wall opening to maintain a
weather tight seal.
Figure 1-2 Typical DME Tower Installation Diagram
Figure 1-3 Triangular Tower Adapter Plate
Figure 1-4 Typical DME Shelter and Tower Grounding Diagram
1.5.8 DME Cabinet Installation
a.
b.
c.
d.
e.
Unpack the DME 19” rack system and stand upright inside the equipment shelter.
The rack can be located on an outside wall or in the center of the room; however the ventilation
louvers located on the left side of the cabinet must not be obstructed.
To level the rack use the adjustable feet then lock the feet positions using the jam nuts.
If desired the front and rear doors can easily be removed by sliding up the three hinge pins on the left
inside edge of each door. If the doors are removed be sure to replace them after installation.
Use #6 grounding wire provided in the AC Power/Installation Kit (Figure Error! Reference source
not found.) to connect from the DME grounding bus bar to the shelter grounding plate using the
shortest path possible.
NOTE: Do not install any modules in the rack until it is properly grounded.
1.5.9 Battery Backup Assembly Installation
a.
b.
c.
Insure DME system AC and DC circuit breakers are in the OFF position.
Construct battery backup unit as detailed in Figure Error! Reference source not found. or per the
drawing provided with supplied battery backup kit.
Install the four twelve-volt batteries and connect batteries in series.
d.
e.
f.
Install battery backup wiring between the DME transmitter cabinet and the battery backup assembly.
The battery ground lead should connect to the grounding bus bar and the battery hot wire (+48V)
should connect to TX1 DC breaker located on the 1A26 Status Panel Assembly.
When supplied with two battery kits then connect the hot wire (+48V) from the second battery set to
the TX2 DC breaker; otherwise install the jumper wire between TX2 DC breaker and TX1 DC breaker
as provided in the battery kit.
Install safety cover(s) over batteries or lid(s) on battery backup box.
CAUTION: Shorting the battery leads can cause a fire or explosion.
1.5.10 Primary AC Power Installation
AC wiring for the DME will require a separate circuit breaker for the DME system and DME obstruction
lights. The convenience outlet located on the front of the 1A26 Status Panel is powered from the
obstruction light breaker.
a.
b.
c.
Insure DME system AC and DC circuit breakers are in the OFF position
Insure that shelter DME system circuit breaker is in the OFF position.
Connect primary AC power to DME as detailed in Figure Error! Reference source not found..
1.5.11 Shelter to Tower Conduit Connections
a.
b.
c.
d.
e.
f.
g.
Using a 2-1/4" hole saw, cut a hole in the wall between the DME transmitters and the antenna tower at
a height above the top of the DME transmitter cabinet.
Refer to Figure Error! Reference source not found.. Slide 2" x 5" threaded conduit into hole. Install
reducing washer and 2" locknut on each end of threaded conduit. Tighten locknut.
Install protective bushing on exposed threaded conduit threads of interior shelter wall. Install 2" PVC
female adapter on threaded conduit of outer shelter wall.
Refer to Figure 1-7. Cut 2" PVC appropriate length to center of tower directly under antenna.
Install 2" PVC hole adapter in bottom of triangular tower adapter plate. Install reducing washer and 2"
locknut onto hole adapter. Install protective bushing over exposed threads.
Cut 2" PVC appropriate length to extend from triangular tower adapter plate to 2" PVC from shelter.
Insure that 2" PVC from triangular tower adapter plate is cut so that PVC from shelter slopes slightly
downward as it runs to tower.
Install 2", 90 degree PVC connector and 2" conduit adapters between the two pieces of 2" PVC and
insure that all pieces fit. Drill a 1/8" hole in the bottom of 2" 90 degree PVC connector. This will
allow any water seepage to drain. Pre-fit all pieces to insure proper mating.
1.5.12 Obstruction Light Installation and Wiring
The obstruction light assembly is shipped separately from the DME antenna and it is necessary to attach the
obstruction light to the top of the DME antenna; and the wiring that extends from the antenna must be
connected to the bulb sockets. Figure 1-8 shows the assembly details.
NOTE
The mounting hole on the top of the DME antenna is threaded for a
3/4" pipe thread. There are two versions of obstruction light assemblies
available: one is threaded for a 3/4" pipe thread; the other is threaded
for a 1" pipe thread. For the 3/4" pipe version, a 1" to 3/4" reducer and
a 3/4" by 1-1/2" nipple stainless steel combination should be used.
a.
b.
c.
Remove lens and bulbs.
Remove the hole cap at the top of the DME antenna and fish out the AC wires using stiff wire bent into
a hook.
Route the three wire AC cable from the DME antenna through the required pipe adapters and into the
bulb sockets.
d.
e.
f.
g.
h.
Thread the obstruction light assembly into the antenna. Use thread tape on all pipe threads to insure a
water tight fit.
Connect the three AC wires from the antenna to the bulb sockets, as shown in Figure 1-5 or Figure 1-6.
Install the lighting rod to the obstruction light nipple as detailed in Figure Error! Reference source
not found..
Verify the obstruction light bulbs match the site AC voltage rating then install the bulbs and lens.
After installing antenna to tower, connect remaining obstruction light power wires to DME cabinet and
shelter circuit breaker box as shown in Figure 1-5 or Figure 1-6. Note that the 070219-0001 cable is
located in the Antenna Kit (Figure Error! Reference source not found.).
Figure 1-5 DME Obstruction Light Interconnect Diagram with Photo Sensor
Figure 1-6 DME Obstruction Light Interconnect Diagram without Photo Sensor
1.5.13 DME Antenna Installation
a.
b.
c.
Use a crane and nylon slings to lift the DME antenna to the top of tower.
Install DME antenna on triangular tower adapter plate as shown in Figure Error! Reference source
not found.. Orientation of the obstruction bulbs and lightning rod is not important.
Secure antenna with appropriate hardware provided in the DME antenna kit.
Figure 1-7 Typical Shelter to Tower Conduit Installation
Figure 1-8 Obstruction Light Installation Diagram
1.5.14 DME Transmitter to Antenna Interconnect
a.
b.
c.
d.
e.
f.
g.
Refer to Figure 1-7. Route ½” Heliax RF feedcable through conduit and connect to antenna connector
J1 (RF INPUT).
Route ¼” Heliax antenna monitor cable through conduit and connect to antenna connector J2 (RF
MONITOR OUTPUT). Note that in most installations the J3 RF MONITOR OUTPUT port can be
used instead of J2 however J2 is preferred.
Route obstruction light power cable through conduit and to antenna connector J4 (OBSTN LT
INPUT).
Connect ½” Heliax RF feedcable to DME transmitter connector 1J1 (RF OUT).
Connect ¼” Heliax antenna monitor cable to DME transmitter connector 1J2 (ANT MON1).
Place obstruction light circuit breaker to the ON position. Verify obstruction lights illuminate.
Using PVC cement, glue 2" PVC conduit connections previously installed.
1.5.15 Connecting VOR or ILS Keyer Wiring
a.
b.
Verify that the primary AC power (located in the shelter main circuit breaker box), VOR equipment
and DME equipment circuit breakers are in the OFF position.
Using the two-conductor electrical cable and forked terminal lugs provided in the AC
Power/Installation kit (Figure Error! Reference source not found.), connect KEY_OUT+ and
KEY_OUT- signals from the 1A19 Interface CCA located in rear of the DME cabinet to the
appropriate location as identified in Table 1-4.
Note after equipment startup refer to section Error! Reference source not found. Error! Reference
source not found. to configure external keying.
Table 1-4 External Keying Connection Locations
SELEX Navaid
1150 VOR
2100 Localizer
2110 Glideslope
KEY_OUT+ (1A19TB2-14)
Destination
TB10-5
1A18TB4-1
1A18TB4-1
KEY_OUT- (1A19TB2-15)
Destination
TB10-6
1A18TB4-2
1A18TB4-2
1.5.16 RCSU and RMM Connections
a.
b.
c.
d.
If the DME is provided with a 2238 RCSU then connect the copper wires from the RCSU to the
1A19TB2-1 and 1A19TB2-2 locations on the Interface CCA for a Dedicated Modem connection type.
For a RF Modem/Fiber connection type, the RS232 connection should be made to the 1A19J5 DB9
connector. DIP switch S2-1 located on the 1A8A1 Low Power Backplane CCA should be set to match
the Connection Type as well.
If a telephone line is available for remote maintenance monitoring (RMM), connect the tip and ring
wires from the telephone interface box to the 1A19 Interface CCA locations TB2-3 and TB2-4.
Polarity is not important. DIP switch S2-2 located on the 1A8A1 Low Power Backplane CCA should
be set to “DIAL-UP” when using this internal dial-up modem. Use the two-conductor electrical cable
provided in the AC Power/Installation kit (Figure Error! Reference source not found.) for this
connection.
If the DME’s internal dial-up modem is unable to comply with local telephone requirements then
connect the telephone line to an external modem and connect the external modem serial port to the
1A19 Interface CCA J6 connector. DIP switch S2-2 located on the 1A8A1 Low Power Backplane
CCA should be set to “~EXTERNAL” when using an external dial-up modem. Reset the DME station
after changing the S2-2 switch.
DIP switch S1-6 located on the 1A8A1 Low Power Backplane CCA controls whether the DME station
will allow remote configuration of transmitter and monitor parameters. When set to “RMT
ALLOWED” a remote user logged into Security Level 3 can put the DME station in Local Mode from
the PMDT and change all parameters as if connected directly to the cabinet in the shelter. When set to
“~NOT ALLOWED” the system can not be put in Local Mode from the PMDT and remote parameter
changes are blocked throughout the software.
1.6 Inspection
Prior to energizing the equipment, a visual inspection is made to eliminate circumstances that could cause
power-up failures.
a.
b.
c.
Visually inspect wire, RF coaxial cables and connectors for corrosion, loose connectors and
improperly assembled connectors.
Insure all terminal boards are free of foreign objects such as pieces of wire or other objects that could
cause electrical shorts within the equipment. Remove foreign objects as necessary.
Inspect the battery backup units to ensure that all terminals and connectors are tight and that there are
no metal shavings or other objects that could cause damage to the equipment.
1.7 Initial Start-up and Preliminary Testing
The following paragraphs detail the step-by-step procedures for initial start-up and preliminary testing of
the DME.
1.7.1 Input Voltage Checks
After the AC and DC power has been connected to the DME transmitter. It is necessary to check the input
power to insure the proper voltage is applied to the system.
a.
b.
c.
d.
e.
f.
g.
Assure that the DME AC and DC circuit breakers to the OFF position.
Set the shelter primary AC power circuit breakers to the ON position.
Using an AC voltmeter check voltage across the AC Monitor 1A22TB3-1 (LINE) to 1A22TB3-2
(NEUTRAL) terminals. Insure the voltage meets the range specified in section Table 1-1 Error!
Reference source not found..
Turn on the DME DC circuit breaker while leaving the AC circuit breakers OFF.
Using a DC voltmeter check voltage across 1A20 BCPS1 E7 (BATT_POS) to E9 (GND). Insure the
voltage is 42 to 50Vdc.
For dual equipment check voltage across 1A21 BCPS2 E7 (BATT_POS) to E9 (GND). Insure the
voltage is 42 to 50Vdc.
Turn DC circuit breakers to the OFF position.
1.7.2 Installing Modules in Transmitter Cabinet
Since the DME transmitter cabinet is shipped separately from its electronic modules, it will be necessary to
install them into the transmitter equipment cabinet. Insure AC and DC circuit breakers are set to the OFF
position.
CAUTION
Many of the modules used in the DME transmitter contain
Electrostatic Discharge (ESD) sensitive components. ALWAYS
wear protective wrist strap when installing modules or CCAs.
Before modules are installed into transmitter cabinet, check
modules or CCAs for cracked or broken connectors, bent pins, and
loose hardware. Report any damage immediately.
1.7.3 Turn on Procedure
a.
b.
c.
d.
Verify all assemblies are properly installed and are fully seated.
Turn AC and DC circuit breakers to the ON position.
Verify the PWR_OK LEDs are lit on all card cage modules.
Verify the CPU_OK LEDs are lit on the RTC, Monitor, and RMS assemblies.
1.7.4 PMDT Hookup and Setup
a.
Unpack the PMDT laptop computer and follow the manufacturer’s installation instructions to powerup the computer, create a user account, and logon to Windows™ as an administrator.
b. Insert the 978178-XXXX PMDT CD-ROM into the laptop computer.
c. Select Start >> Run then type D:\Setup.exe to start the PMDT installation. Note if installation
does not start then use the correct drive letter associated with the CD-ROM drive.
d. Follow the default prompts for PMDT installation.
e. In order for the PMDT controls to be properly displayed change the DPI Setting to “Normal (96 DPI)”
in Windows on the Display Properties >> Settings >> Advanced >> General tab. Note that Display
Properties can be accessed by right-clicking on the Windows background then selecting Properties.
f. At the DME assure the AC and DC breakers are in the ON position.
g. Plug the USB cord between the laptop computer and 1A13J1 (PMDT USB) located on the RMS CCA.
h. Windows should detect the USB device and start installing a driver. If prompted for the USB driver
files they are installed in the PMDT directory at C:\Program Files\SELEX-SI\PMDT\FTDI USB
Driver.
i. Start the PMDT application by double-clicking on the desktop icon named PMDT.
j. Select System >> PMDT Setup.
k. In the Navaid Direct COM Port control pick the COM port that contains “USB Serial Port” in the
description.
l. On the PMDT configuration screen, setup other options such as Language and Print Screen mode then
select OK to save the changes.
m. Refer to section Error! Reference source not found. Error! Reference source not found. to connect
to the DME equipment at Security Level 3.
1.7.5 Site Adjustments and Configurations
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
Press the LOCAL CONTROL button on the 1A1 LCU to put the DME into Local Mode.
At the LCU bypass the Integral monitor and put Transmitter 1 on antenna.
If the VSWR reading on the Monitors >> Data >> Integral screen is in alarm then shut down the DME
and troubleshoot the RF feedcable to antenna connection before continuing. VSWR alerts detected by
each power amplifier can also be found on the Transmitters >> Data >> Transmitter Data screen that
indicate a faulty RF load.
On the Monitors >> Data >> Integral screen note the ERP (Effective Radiated Power) value for each
monitor.
On the Monitors >> Configuration >> Integral screen change the Monitor 1 Replay Attenuation setting
until the Monitor 1 EPR is 0 ± 1dB.
For dual monitor equipment change the Monitor 2 Replay Attenuation setting until the Monitor 2 EPR
is 0 ± 1dB.
On the RMS >> Configuration >> Station screen verify the channel number and type (X or Y) match
the site requirements and frequency paring requirements as identified in Table 1-5. If corrections are
needed then refer to section Error! Reference source not found. Error! Reference source not
found..
While on the RMS >> Configuration >> Station screen type a Station Identifier message that will be
used to uniquely identify the station when performing local or remote maintenance. It is suggested that
the site name and runway identifier be included.
If the DME is provided with a 2238 RCSU then on the RMS >> Configuration >> General screen
check the RCSU Present box and configure the Connection Type and Interlock Control to match the
installation requirements.
Set the Primary Ident Code to the assigned station identifier as detailed in section Error! Reference
source not found. Error! Reference source not found.. Also select the keying source and other
keying options while on that screen.
Select RMS >> Config Backup to save changes to the DME configuration.
If using a wattmeter with removable elements for site maintenance then perform the procedure in
section Error! Reference source not found. Error! Reference source not found..
Table 1-5 DME Channel Frequency Allocation
ILS/VOR Frequency
Monitor Interrogator
Transmitter Reply
Receiver LO
DME
Channel
LOC
(MHz)
GS
(MHz)
VOR
(MHz)
Freq
(MHz)
Pulse Code
µs
Freq
(MHz)
Pulse Code
µs
Freq
(MHz)
1X
1025
12
962
12
900
1Y
1025
36
1088
30
900
2X
1026
12
963
12
901
2Y
1026
36
1089
30
901
3X
1027
12
964
12
902
3Y
1027
36
1090
30
902
4X
1028
12
965
12
903
4Y
1028
36
1091
30
903
5X
1029
12
966
12
904
5Y
1029
36
1092
30
904
6X
1030
12
967
12
905
6Y
1030
36
1093
30
905
7X
1031
12
968
12
906
7Y
1031
36
1094
30
906
8X
1032
12
969
12
907
8Y
1032
36
1095
30
907
9X
1033
12
970
12
908
9Y
1033
36
1096
30
908
10X
1034
12
971
12
909
10Y
1034
36
1097
30
909
11X
1035
12
972
12
910
11Y
1035
36
1098
30
910
12X
1036
12
973
12
911
12Y
1036
36
1099
30
911
13X
1037
12
974
12
912
13Y
1037
36
1100
30
912
14X
1038
12
975
12
913
14Y
1038
36
1101
30
913
15X
1039
12
976
12
914
15Y
1039
36
1102
30
914
16X
1040
12
977
12
915
16Y
1040
36
1103
30
915
17X
108.0
1041
12
978
12
916
17Y
108.05
1041
36
1104
30
916
Table 1-5 DME Channel Frequency Allocation
ILS/VOR Frequency
Monitor Interrogator
Transmitter Reply
Receiver LO
DME
Channel
LOC
(MHz)
GS
(MHz)
VOR
(MHz)
Freq
(MHz)
Pulse Code
µs
Freq
(MHz)
Pulse Code
µs
Freq
(MHz)
18X
108.1
334.7
1042
12
979
12
917
18Y
108.15
334.55
1042
36
1105
30
917
19X
108.2
1043
12
980
12
918
19Y
108.25
1043
36
1106
30
918
20X
108.3
334.1
1044
12
981
12
919
20Y
108.35
333.95
1044
36
1107
30
919
21X
108.4
1045
12
982
12
920
21Y
108.45
1045
36
1108
30
920
22X
108.5
329.9
1046
12
983
12
921
22Y
108.55
329.75
1046
36
1109
30
921
23X
108.6
1047
12
984
12
922
23Y
108.65
1047
36
1110
30
922
24X
108.7
330.5
1048
12
985
12
923
24Y
108.75
330.35
1048
36
1111
30
923
25X
108.8
1049
12
986
12
924
25Y
108.85
1049
36
1112
30
924
26X
108.9
329.3
1050
12
987
12
925
26Y
108.95
329.15
1050
36
1113
30
925
27X
109.0
1051
12
988
12
926
27Y
109.05
1051
36
1114
30
926
28X
109.1
331.4
1052
12
989
12
927
28Y
109.15
331.25
1052
36
1115
30
927
29X
109.2
1053
12
990
12
928
29Y
109.25
1053
36
1116
30
928
30X
109.3
332
1054
12
991
12
929
30Y
109.35
331.85
1054
36
1117
30
929
31X
109.4
1055
12
992
12
930
31Y
109.45
1055
36
1118
30
930
32X
109.5
332.6
1056
12
993
12
931
32Y
109.55
332.45
1056
36
1119
30
931
33X
109.6
1057
12
994
12
932
33Y
109.65
1057
36
1120
30
932
34X
109.7
333.2
1058
12
995
12
933
34Y
109.75
333.05
1058
36
1121
30
933
35X
109.8
1059
12
996
12
934
35Y
109.85
1059
36
1122
30
934
Table 1-5 DME Channel Frequency Allocation
ILS/VOR Frequency
Monitor Interrogator
Transmitter Reply
Receiver LO
DME
Channel
LOC
(MHz)
GS
(MHz)
VOR
(MHz)
Freq
(MHz)
Pulse Code
µs
Freq
(MHz)
Pulse Code
µs
Freq
(MHz)
36X
109.9
333.8
1060
12
997
12
935
36Y
109.95
333.65
1060
36
1123
30
935
37X
110.0
1061
12
998
12
936
37Y
110.05
1061
36
1124
30
936
38X
110.1
334.4
1062
12
999
12
937
38Y
110.15
334.25
39X
110.2
1063
12
1000
12
938
39Y
110.25
1063
36
1126
30
938
40X
110.3
335
1064
12
1001
12
939
40Y
110.35
334.85
1064
36
1127
30
939
41X
110.4
1065
12
1002
12
940
41Y
110.45
1065
36
1128
30
940
42X
110.5
329.6
1066
12
1003
12
941
42Y
110.55
329.45
1066
36
1129
30
941
43X
110.6
1067
12
1004
12
942
43Y
110.65
1067
36
1130
30
942
44X
110.7
330.2
1068
12
1005
12
943
44Y
110.75
330.05
1068
36
1131
30
943
45X
110.8
1069
12
1006
12
944
45Y
110.85
1069
36
1132
30
944
46X
110.9
330.8
1070
12
1007
12
945
46Y
110.95
330.65
1070
36
1133
30
945
47X
111.0
1071
12
1008
12
946
47Y
111.05
1071
36
1134
30
946
48X
111.1
331.7
1072
12
1009
12
947
48Y
111.15
331.55
1072
36
1135
30
947
49X
111.2
1073
12
1010
12
948
49Y
111.25
1073
36
1136
30
948
50X
111.3
332.3
1074
12
1011
12
949
50Y
111.35
332.15
1074
36
1137
30
949
51X
111.4
1075
12
1012
12
950
51Y
111.45
1075
36
1136
30
950
52X
111.5
332.9
1076
12
1013
12
951
52Y
111.55
332.75
1076
36
1139
30
951
53X
111.6
1077
12
1014
12
952
53Y
111.65
1077
36
1140
30
952
Table 1-5 DME Channel Frequency Allocation
ILS/VOR Frequency
Monitor Interrogator
Transmitter Reply
Receiver LO
DME
Channel
LOC
(MHz)
GS
(MHz)
VOR
(MHz)
Freq
(MHz)
Pulse Code
µs
Freq
(MHz)
Pulse Code
µs
Freq
(MHz)
54X
111.7
333.5
1078
12
1015
12
953
54Y
111.75
333.35
1078
36
1141
30
953
55X
111.8
1079
12
1016
12
954
55Y
111.85
1079
36
1142
30
954
56X
111.9
331.1
1080
12
1017
12
955
56Y
111.95
330.95
1080
36
1143
30
955
57X
112.0
1081
12
1018
12
956
57Y
112.05
1081
36
1144
30
956
58X
112.1
1082
12
1019
12
957
58Y
112.15
1082
36
1145
30
957
59X
112.2
1083
12
1020
12
958
59Y
112.25
1083
36
1146
30
958
60X
1084
12
1021
12
959
60Y
1084
36
1147
30
959
61X
1085
12
1022
12
960
61Y
1085
36
1148
30
960
62X
1086
12
1023
12
961
62Y
1086
36
1149
30
961
63X
1087
12
1024
12
962
63Y
1087
36
1150
30
962
64X
1088
12
1151
12
963
64Y
1088
36
1025
30
963
65X
1089
12
1152
12
964
65Y
1089
36
1026
30
964
66X
1090
12
1153
12
965
66Y
1090
36
1027
30
965
67X
1091
12
1154
12
966
67Y
1091
36
1028
30
966
68X
1092
12
1155
12
967
68Y
1092
36
1029
30
967
69X
1093
12
1156
12
968
69Y
1093
36
1030
30
968
70X
112.3
1094
12
1157
12
969
70Y
112.35
1094
36
1031
30
969
71X
112.4
1095
12
1158
12
970
71Y
112.45
1095
36
1032
30
970
Table 1-5 DME Channel Frequency Allocation
ILS/VOR Frequency
Monitor Interrogator
Transmitter Reply
Receiver LO
DME
Channel
LOC
(MHz)
GS
(MHz)
VOR
(MHz)
Freq
(MHz)
Pulse Code
µs
Freq
(MHz)
Pulse Code
µs
Freq
(MHz)
72X
112.5
1096
12
1159
12
971
72Y
112.55
1096
36
1033
30
971
73X
112.6
1097
12
1160
12
972
73Y
112.65
1097
36
1034
30
972
74X
112.7
1098
12
1161
12
973
74Y
112.75
1098
36
1035
30
973
75X
112.8
1099
12
1162
12
974
75Y
112.85
1099
36
1036
30
974
76X
112.9
1100
12
1163
12
975
76Y
112.95
1100
36
1037
30
975
77X
113.0
1101
12
1164
12
976
77Y
113.05
1101
36
1038
30
976
78X
113.1
1102
12
1165
12
977
78Y
113.15
1102
36
1039
30
977
79X
113.2
1103
12
1166
12
978
79Y
113.25
1103
36
1040
30
978
80X
113.3
1104
12
1167
12
979
80Y
113.35
1104
36
1041
30
979
81X
113.4
1105
12
1168
12
980
81Y
113.45
1105
36
1042
30
980
82X
113.5
1106
12
1169
12
981
82Y
113.55
1106
36
1043
30
981
83X
113.6
1107
12
1170
12
982
83Y
113.65
1107
36
1044
30
982
84X
113.7
1108
12
1171
12
983
84Y
113.75
1108
36
1045
30
983
85X
113.8
1109
12
1172
12
984
85Y
113.85
1109
36
1046
30
984
86X
113.9
1110
12
1173
12
985
86Y
113.95
1110
36
1047
30
985
87X
114.0
1111
12
1174
12
986
87Y
114.05
1111
36
1048
30
986
88X
114.1
1112
12
1175
12
987
88Y
114.15
1112
36
1049
30
987
89X
114.2
1113
12
1176
12
988
89Y
114.25
1113
36
1050
30
988
Table 1-5 DME Channel Frequency Allocation
ILS/VOR Frequency
Monitor Interrogator
Transmitter Reply
Receiver LO
DME
Channel
LOC
(MHz)
GS
(MHz)
VOR
(MHz)
Freq
(MHz)
Pulse Code
µs
Freq
(MHz)
Pulse Code
µs
Freq
(MHz)
90X
114.3
1114
12
1177
12
989
90Y
114.35
1114
36
1051
30
989
91X
114.4
1115
12
1178
12
990
91Y
114.45
1115
36
1052
30
990
92X
114.5
1116
12
1179
12
991
92Y
114.55
1116
36
1053
30
991
93X
114.6
1117
12
1180
12
992
93Y
114.65
1117
36
1054
30
992
94X
114.7
1118
12
1181
12
993
94Y
114.75
1118
36
1055
30
993
95X
114.8
1119
12
1182
12
994
95Y
114.85
1119
36
1056
30
994
96X
114.9
1120
12
1183
12
995
96Y
114.95
1120
36
1057
30
995
97X
115.0
1121
12
1184
12
996
97Y
115.05
1121
36
1058
30
996
98X
115.1
1122
12
1185
12
997
98Y
115.15
1122
36
1059
30
997
99X
115.2
1123
12
1186
12
998
99Y
115.25
1123
36
1060
30
998
100X
115.3
1124
12
1187
12
999
100Y
115.35
1124
36
1061
30
999
101X
115.4
1125
12
1188
12
1000
101Y
115.45
1125
36
1062
30
1000
102X
115.5
1126
12
1189
12
1001
102Y
115.55
1126
36
1063
30
1001
103X
115.6
1127
12
1190
12
1002
103Y
115.65
1127
36
1064
30
1002
104X
115.7
1128
12
1191
12
1003
104Y
115.75
1128
36
1065
30
1003
105X
115.8
1129
12
1192
12
1004
105Y
115.85
1129
36
1066
30
1004
106X
115.9
1130
12
1193
12
1005
106Y
115.95
1130
36
1067
30
1005
107X
116.0
1131
12
1194
12
1006
107Y
116.05
1131
36
1068
30
1006
Table 1-5 DME Channel Frequency Allocation
ILS/VOR Frequency
Monitor Interrogator
Transmitter Reply
Receiver LO
DME
Channel
LOC
(MHz)
GS
(MHz)
VOR
(MHz)
Freq
(MHz)
Pulse Code
µs
Freq
(MHz)
Pulse Code
µs
Freq
(MHz)
108X
116.1
1132
12
1195
12
1007
108Y
116.15
1132
36
1069
30
1007
109X
116.2
1133
12
1196
12
1008
109Y
116.25
1133
36
1070
30
1008
110X
116.3
1134
12
1197
12
1009
110Y
116.35
1134
36
1071
30
1009
111X
116.4
1135
12
1198
12
1010
111Y
116.45
1135
36
1072
30
1010
112X
116.5
1136
12
1199
12
1011
112Y
116.55
1136
36
1073
30
1011
113X
116.6
1137
12
1200
12
1012
113Y
116.65
1137
36
1074
30
1012
114X
116.7
1138
12
1201
12
1013
114Y
116.75
1138
36
1075
30
1013
115X
116.8
1139
12
1202
12
1014
115Y
116.85
1139
36
1076
30
1014
116X
116.9
1140
12
1203
12
1015
116Y
116.95
1140
36
1077
30
1015
117X
117.0
1141
12
1204
12
1016
117Y
117.05
1141
36
1078
30
1016
118X
117.1
1142
12
1205
12
1017
118Y
117.15
1142
36
1079
30
1017
119X
117.2
1143
12
1206
12
1018
119Y
117.25
1143
36
1080
30
1018
120X
117.3
1144
12
1207
12
1019
120Y
117.35
1144
36
1081
30
1019
121X
117.4
1145
12
1208
12
1020
121Y
117.45
1145
36
1082
30
1020
122X
117.5
1146
12
1209
12
1021
122Y
117.55
1146
36
1083
30
1021
123X
117.6
1147
12
1210
12
1022
123Y
117.65
1147
36
1084
30
1022
124X
117.7
1148
12
1211
12
1023
124Y
117.75
1148
36
1085
30
1023
125X
117.8
1149
12
1212
12
1024
125Y
117.85
1149
36
1086
30
1024
Table 1-5 DME Channel Frequency Allocation
ILS/VOR Frequency
Monitor Interrogator
Transmitter Reply
Receiver LO
DME
Channel
LOC
(MHz)
GS
(MHz)
VOR
(MHz)
Freq
(MHz)
Pulse Code
µs
Freq
(MHz)
Pulse Code
µs
Freq
(MHz)
126X
117.9
1150
12
1213
12
1025
126Y
117.95
1150
36
1087
30
1025
1.7.6 System Checkout
a.
b.
c.
d.
e.
f.
g.
h.
Bypass the Integral monitor and select Tx1 Main.
For dual equipment bypass the Standby monitor and select Tx2 Load.
If the DME station has an alarm condition, then refer to section Error! Reference source not found.
to perform fault isolation and corrective maintenance.
Perform section Error! Reference source not found. Error! Reference source not found.
procedure.
Perform section Error! Reference source not found. Error! Reference source not found.
procedure.
Perform section Error! Reference source not found. Error! Reference source not found.
procedure.
Perform the SELEX-SI Site Acceptance Test (SAT) Procedure for the 2160/2170 DME system. Note
if this procedure is not available then perform all remaining performance checks in section Error!
Reference source not found. of this manual.
Save the final DME configuration to disk using the System >> Configuration Save command from the
PMDT. It is recommended that a backup copy of the station configuration also be maintained off site.
1.7.7Performance Tuning During Flight Inspection
a.
b.
c.
If the DME is not able to achieve usable distance then refer to section Error! Reference source not
found. Error! Reference source not found. to adjust the receiver threshold.
If flight inspection reports an unlock condition or a range error while on a radial approach then refer to
section Error! Reference source not found. Error! Reference source not found. to configure echo
suppression.
If changes to the station are made during flight inspection then create a new station configuration file
using the System >> Configuration Save command from the PMDT.

---

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