Becker Avionics TG480 Installation and Operation
VH F Grou nd Stat ion
TG480-(025)-(XX)
Installation and Operation
M a n u a l
I ss ue 1 A pr il 2 00 7
B E C K E R A V I O N I C S • 1 0 3 7 6 U S A T o d a y W a y • M i r a m a r , F L 3 3 0 2 5
Ph on e 95 4- 450 -3 137 • F a x 9 5 4 - 4 5 0 - 3 2 0 6
T G4 80 -( 02 5) -( X X)
FIRST ISSUE AND CHANGES
Issue . . . 1 . . . . April 2007
LIST OF EFFECTIVE PAGES
Page No.: Date : Page No.: Date :
Title
1 -I - 1-II
1-1 - 1-8
2-I - 2-II
2-1 - 2-7
3-I - 3-II
3-1 - 3-25
04/07
04/07
04/07
04/07
04/07
04/07
04/07
© 2007 by Becker Avionics, Inc.
All rights reserved
TG480-(025)-(XX)
Table of contents
Section 1 GENERAL INFORMATION Page
1.1 Introduction 1-1
1.2 Purpose of equipment 1-1
1.3 General description 1-1
1.3.1 Short description CORE Module 1-2
1.4 Technical Data 1-4
1.4.1 Technical data general, power supply 1-4
1.4.2 Technical data environmental 1-5
1.4.3 Technical data receive 1-5
1.4.4 Technical data transmitter 1-6
1.4.5 Technical data mechanical 1-6
1.4.6 Technical data battery operation (option 101) 1-7
1.4.7 Option 2-wire remote control (option 102) 1-7
1.4.8 Option multi-wire remote control (option 103) 1-7
1.4.9 Option tape recorder control (option 104) 1-7
1.4.10 Scope of delivery 1-8
1.5 Accessories 1-8
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1-I TG480XX.01 Issue 04/07
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Section 1 GENERAL INFORMATION
1.1 Introduction
This manual TG480XX.01 describes the VHF ground station
TG480-(025)-(XX).
The manual TG480XX.01 "Installation and Operation" contains the following sections :
Section DV 480XX.01
1 General Information X
2 Installation X
3 Operation X
1.2 Purpose of equipment
The VHF ground station
TG480-(025)-(XX) is a fixed ground station for speech communications in the
VHF frequency range of 118.000 MHz to 136.975 MHz.
The ground station is designed for airport and airfield use and can be used as a main transceiver on
landing fields and as a standby unit on airports and for special tasks within the scope of air traffic
control.
1.3 General description
The VHF ground station is designed for mounting in 19-inch rack systems or in an ATC desk.
The VHF ground station is designed to operate on a AC supply voltage of 115 V or 230 V ± 10% /50-
60 Hz. In DC operation, the VHF ground station is designed to operate on a voltage of 13.75 V
[TG480 - (10) or 24V, TG480 - (20), TG480 -(50)].
The control circuit switches over to external DC voltage if the AC voltage supply fails. If an internal
battery is fitted to provide an emergency power supply, it will still be possible to maintain T/R
communication for several hours if the AC and external DC supplies fail. The necessary charging
circuit for the battery is located inside the TG480 - ( ).
TG480XX.01 Issue 04/07 Page 1-1
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GENERAL DESCRIPTION
1.3.1 General description of CORE Module
A. The VHF transceiver has been developed as a single block unit. The dimen-
sions correspond to the standard instrument diameter of 58 mm.
All controls and indicators are located on the front panel.
The rear of the unit holds the equipment connector and the antenna socket.
B. After it is switched on, the unit performs a self test. All segments of the display
flash during the self test. If faults are detected, the LCD (liquid crystal display)
displays a fault code for approximately five seconds. The VHF transceiver then
automatically activates the mode set before it was switched off.
C . The VHF transceiver is fitted with a single superheterodyne receiver. A squelch
(muting) circuit suppresses transmitters or disturbances below a certain field
strength. The switching threshold can be set. The squelch function can also be
switched off.
D . The transmitter is designed to be wideband over the 118.000 MHz to
136.975 MHz range. The transmitter output power is ≥ 5 Watt. The sidetone is
automatically switched to the headphone output during transmission.
E. The oscillator frequency of the receiver and the the transmitting frequency of
the transmitter are generated by a VCO (voltage controlled oscillator). This is
monitored by a digital frequency evaluation circuit. This digital frequency
processing operates in conjunction with a microprocessor.
F. The microphone inputs are designed for both dynamic and standard microphones.
The inputs are connected to a dynamic volume compressor which keeps the
modulation voltage constant over a wide input voltage range.
G . The frequency indication is by means of a liquid crystal display (LCD). The
required operating frequency is set using the MHz and kHz frequency selector
switches. The MHz rotary switch engages at 1 MHz steps and the kHz rotary
switch at 25 kHz steps. The VHF transceiver also contains a memory device
for storing 99 different frequencies which remain stored even with the unit
switched off without an auxiliary battery.
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H. The VHF transceiver also contains a monitor ing sta ge for the supply voltage
which is activated when the VHF transceiver is switched on. If the supply
voltage drops below 10.5 V, the segments of the LCD begin to flash.
I. In the mode 3, the supply voltage and temperature is displayed in the bottom
line of the LCD.
J. The AF auxiliary input enables AF signal switching of auxiliary units in the air-
craft. The switched AF signals can, however, only be monitored in the reception
mode.
K. If illumination of the LCD is required, this can be connected either directly to the
supply voltage or via a dimmer.
L. The scan function can be switched on in the service mode and called up in
mode 2. The active frequency is shown in the top line of the display and the
bottom line shows the associated storage channel with the preset CS. In the
scanning mode the stored frequencies in the storage channels are scanned in
succession at 200 ms intervals. When an evaluatable reception signal is found,
the VHF transceiver remains on this frequency until an evaluatable reception
frequency is no longer present. It then begins to scan all the stored frequencies
again in 200 ms intervals. In the service mode, the hold time between the end
of an evaluatable signal and the continuation of the scanning of the next channels can be set to between 0 and 60 seconds.
M. Spe cial functions
VHF transceiver contains some special functions which can be set in the
service mode.
l Adjustment of volume IC, sidetone, AF auxiliary and the sensitivity of dy-
namic microphone.
l The switch-on threshold of the squelch can be set in the service mode.
l The frequency setting can be inhibited. The VHF transceiver then opera-
tes onlH.The VHF transceiver also contains a monitoring stage for the supply voltage.
l The storage of frequencies in the storage channels can be inhibited.
l Stored frequencies can be erased.
l Access to the service mode can be interlocked with a 4-digit password.
l The scan function can be switched on.
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TG480-(025)-(XX)
1.4 Technical data
1.4.1 Technical data general, power supply
AC-Operating voltage 115 V or 230 V ± 10% 50/60 Hz
DC-Operating voltage
TG480 - (10) 12 V . . . 16 V TG480
TG480 - (20), TG480 - (50) 24 V +20% -10% Current
consumption at 115 V AC
max. Rx = 65 mA
TG480 - (05)
max. Tx = 300 mA
TG480 - (10) max. Rx = 250 mA
max. Tx = 1,5 A
TG480 - (20) max. Rx = 250 mA
max. Tx = 1,8 A
Current consumption at 230 V AC
TG480 - (10) max. Rx = 170 mA
max. Tx = 0,9 A
TG480 - (20) max. Rx = 170 mA
max. Tx = 1.1A
TG480 - (50) max. Rx = 170 mA
max. Tx = 3A
Current consumption at 13,75 V DC
TG480 -(10) max. Rx = 200 mA
max. Tx = 1800 mA
Current consumption at 24 V DC
TG480 - (20) max. Rx = 200 mA
max. Tx = 4,5 A
TG480 - (50)
max. Rx = 200 mA
max. Tx = 9,0 A
Battery int./U = 12.0 V (optional) max. Rx = 240 mA
max. Tx = 1800 mA
Fuse
PS 24V
DC 24V
DC-DC 15V
AC 120V
AC 120V Spare
15A
15A
5A
10A
10A
Protection against wrong polarity at DC external voltage
TG480XX.01 Issue 04/07 Page 1-43
TG480-(025)-(XX)
Frequency range 118.000 MHz - 136.975 MHz
Frequency tolerance ≤ 15 ppm
Channel spacing 25 kHz
Number of channels 760
Number of channel memories 99
Antenna impedance 50 Ω
1.4.2 Technical data environmental
Operating temperature range - 15° C . . . + 50° C
Storage temperature range - 40° C . . . + 70° C
Humidity (operating) ≤ 95% / 40° C without condensation
Humidity (storage) ≤ 95% / 40° C
Operating altitude
Operating - 200 . . . 3500 m
Transport - 200 . . . 10000 m
1.4.3 Technical data receiver
Sensitivity
m = 60 % / 1 kHz ≤ 5 µV (EMF)
N
Selectivity
± 17 kHz ≥ 40 dB
± 25 kHz ≥ 60 dB
Intermodulation ≥ 65 dB
IF frequency 21.4 MHz
IF bandwith ≥ ± 8 kHz
S + N ≥ 1 0 dB
Squelch adjustable (dependant on carrier)
AF output power asym. (Speaker) ≥ 2 W 4 Ω (adjustable)
AF output power sym. (Headphone) ≥ 0.1 W 600 Ω (adjustable)
Distortion ≤ 10 %
Spurious emission - 57 dBm (2 nW)
Page 1-5 TG480XX.01 Issue 04/07
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1.4.4 Technical data transmitter
Transmitter power output VSWR 1:1
TG480 - (10) ≥ 10W
TG480 - (20) ≥ 20W
TG480 - (50) ≥ 50W
Tolerable VSWR
2:1
Modulation type A3E
Modulation factor ≥ 80% and ≤ 100%
Distortion ≤ 10 %
≤ 15% TG480 - (50)
Duty cycle 1 minutes transmit- and
4 minutes receive mode
Carrier noise level ≥ 35 dB
Spurious emissions ≤ 54 dBm (4 nW)
Dynamic Mic.
≤ 2mV symm .
(dynamic compressor)
1.4.5 Technical data mechanical
Dimensions
Case
448 x 350 x 89 mm
19 Zoll unit
483 x 350 x 89 mm
Antenna connector N-female
Weight (without options) 78.5 kg
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TG480-(025)-(XX)
1.4.6 Technical data battery operation (option 101)
Nominal voltage 12 V DC
Capacity of internal battery
transmit/receive ratio of 1 : 4 typ. 3 hrs.
transmit/receive ratio of 1 : 9 typ. 5 hrs.
standby mode typ. 8 hrs.
Number of internal batteries 1
Battery type Lead battery 2,2 Ah
1.4.7 Option 2-wire remote control (option 102)
Max. length of wire ≤ 10 km
Impedance 600 Ω
1.4.8 Option multi-wire remote control
Max. length of wire ≤ 100m
1.4.9 Option recorder control OP 104
Audio output recorder 100 mV at 47kΩ (adjustable)
Page 1-7 TG480XX.01 Issue 04/07
TG480-(025)-(XX)
1.4.10 Scope of delivery
VHF ground station TG480 - (10 ) Stock no.: 940.437-926
or
VHF ground station TG480 - (20 ) Stock no.: 940.436-926
or
VHF ground station TG480 - (50 )
Stock no.: 940.435-926
Fuse 3.15 AT Stock no.: 788.074-392
Fuse 4 AT Stock no.: 769.304-392
Fuse 10 AT Stock no.: 912.109-392
Cable connector (DC connection)
Stock no.: 724.890-277
Mains cord (AC connection) Stock no.: 295.728-277
1.5 Accessories
Antenna connector (N-male) Stock no.: 716.502-277
Hand dyn. microphone with Stock no.: 344.214-951
cable with 5-pole DIN connector 1PM012
Shure 514B dyn. mike
Stock no.: 901.402-350
Lighting protection, IS-50NXCO Stock no.: 962.704-283
Antenna 1A049 Stock no.: 812.064-952
Notch-Filter Stock no.: 889.407-918
DTR 40-FD Remote Control (CPI) Stock no.: 919.442-951
DTP1-C, DC term. panel (CPI) Stock no.: 919.443-951
TG480XX.01 Issue 04/07 Page 1-8
TG480 A - ( XX )
Table of contents
Section 2 INSTALLATION Page
2.1 Installation in a tower ATC desk 2-1
2.1.1 General 2-1
2.1.2 Pre-installation check 2-1
2.1.3 Visual inspection 2-1
2.1.4 Setting up the VHF-ground station 2-1
2.1.5 Installation of fuse for battery (Option 101) 2-2
2.1.6 Mechanical installation of VHF ground station in an ATC desk 2 - 2
2.1.7 Hints for installation of the VHF ground station in an ATC desk 2-3
2.1.8 Connection of external PTT switch or PTT foot switch 2-3
2.1.9 Installation of antenna system 2-3
2.1.10 Lightning protection 2-3
2.1.11 Grounding the VHF ground station 2-3
2.1.12 Over-voltage protection 2-3
2.1.13 Tuning Instructions for the co-location filter 2-3
2.2 Pin connection front / rear panel 2- 3
2.2.0 Pin connection service connector 2-3
2.2.1 Pin connection mike connector J 25 (MIC) 2-4
2.3 Pin connection rear side 2-4
2.3.1 Pin connection remote control J 19 (REMOTE CONTROL) 2 - 4
2.3.2 VHF tunable filter 2 - 4
2.3.3 Pin connection tape recorder connector J 23 (TAPE RECORDER) 2-5
2.3.4 DC EXT. INPUT connector wiring 2-5
Fig. 2-1 Mechanical installation 19-inch adaptors 2 - 2
Fig. 2-2 Installation wiring diagram tape recorder 2 - 5
Fig. 2-5 Dimensions TG480 - ( )
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TG480-(025)-(XX)
Section 2 INSTALLATION
2.1 Installation in a Tower ATC desk
2.1.1 General
The VHF ground stati on can be incorporated in a tower air traf fic control desk depending on the type of
the latter. The following instructions thus apply only in a general way.
Caution
In stal la ti on and cab ling of the VHF ground sta ti on shall only be done by skil led avio nics
personnel.
Re mo val of the co vers of the VHF ground sta ti on and re pairs of this equip ment shall only
be done by skil led avio nics per son nel.
2.1.2 Pre-installation check
In spect the unit pri or to in stal ling the VHF ground sta ti on in an ATC desk, to estab lish whet her it has suf fe red da ma ge du ring trans por ta ti on.
2.1.3 Visual inspection
Be fo re com men cing ope ra ti on vi su al ly exa mi ne the unit pay ing par ti cu lar at ten ti o n to the fol lo wing de fects:
1. Dirt, dents, scrat ches, cor ro si on or bro ken at ta ching parts, da ma ged paint work on hou sing, parts of
the hou sing and pa nel.
2. Dirt or scrat ches on the iden ti fi ca ti on pla te, front pa nel, LCD or ins crip tions.
3. Dirt, bent or bro ken pins, dis pla ced in serts of plugs and so ckets.
4. Dirt and me cha ni cal da ma ge to pushbut tons and ope ra ting knobs.
2.1.4 Setting up the VHF ground station
The VHF ground sta ti on can be set up eit her flat or in a slant pla ne (using the col lap si ble legs) on a tab le.
Af ter set ting up the equip ment shall be con nec ted to a po ten ti al equa li za ti on bar via an
ear ting lead ha ving cross-section of 10 squa re mil li me ters. The earth ting con nec ti on is lo ca ted on the rear pa nel of the equip ment.
Be fo re con nec ting the ann ten na to the equip ment sta ti cal ly disch ar ge the an ten na and
the an ten na fee der line by con nec ting both the con nec tor hou sing and the in ner
con-ductor of the an ten na line to the earth ting con nec ti on on the rear pa nel of the equip ment.
TG480XX.01 Issue 04/07 Page 2-1
TG480-(025)-(XX)
Con nect the mi cro pho ne to the mi cro pho ne jack.
If the equipment has option 101 incorporated, the attached fuse has to be installed in the
battery fuse holder (Refer to Installation of fuse for battery.
Connect the cable plug “DC extern” to the jack “DC extern” on the rear panel of the VHF
ground station. Connect the other end of the DC supply voltage.
CAUTION
Do not confuse the polari ty!
An ade qua te ly di men sio ned ca ble of 1,5 mm
2
and hig her shall be used for his pur po se
Con nect the supp lied po wer cord first to the VHF ground sta ti on and then to AC po wer
outlet.
NOTE
The re is no ON/OFF switch pro vi ded on the VHF ground sta ti on. If an ex ter nal supp ly vol ta ge, eit her AC or DC is ap plied, the VHF ground sta ti on is in the stand by mode. By me ans of the ON/STAND BY switch on the front pa nel the equip ment can be swit ched ON or
in the stand by mode. If a bat te ry is in stal led in the VHF ground sta ti on and the AC- and
DC-external supp ly vol ta ges are swit ching off and by mis ta ke the ON/STAND BY switch in
the ON po si ti on, the equip ment is run ning on the in ter nal bat te ry.
2.1.5 Installation of fuse for battery (option 101)
To prevent unintended switching ON of the VHF ground station during transport and thus discharging
the battery the fuse will be removed before shipping. Please insert the enclosed 12 amperes fuse into
the fuse holder no. 2 on the back panel of the VHF ground station.
2.1.6 Mechanical Installation of the VHF ground station in an ATC desk
The 19-inch tab le mo del may be in stal led in an Air traf fic con trol desk at any time. By me ans of a 4 mm
Al len-type wrench re mo ve the for screws (1) and the hand les (4). Re fer to Fi gu re 2-1. Re mo ve the two
adap tors “FRONT” (3) and re pla ce them by the 19-inch adap tors (5). The 19-inch adap tors are supp lied with each unit.
Fig. 2-1 Me cha ni cal In stal la ti on 19-inch adap tors
Page 2-2 TG480XX.01 Issue 04/07
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2.1.7 Hints for installation of the VHF ground station in an ATC desk
Re fer to 2.1.4.
2.1.8 Connection of external PTT switch or PTT foot switch
The PTT key can be con nec ted eit her to the mi cro pho ne jack on the front pa nel or to DB connector
on the rear pa nel.
Mi cro pho ne jack See fig. Jack J4
PTT DB connector Pin 4 PTT
Pin 5 GND
2.1.9 Installation of antenna system
For sa fe ty rea sons the an ten na sys tem should be in stal led only by spe cia list per son nel or a spe cia list
firm. The cor rect in stal la ti on and groun ding of the an ten na sys tem is an ess en ti al pre con di ti on for trou ble free functio ning of the VHF ground sta ti on.
2.1.10 Lightning protection
To pro tect the VHF ground sta ti on from light ning stri ke or sta tic disch ar ge at the an ten n a, a light ning
pro tec ti on ele ment is to be fit ted in the supp ly ca ble. The hou sing of the light ning pro tec ti on ele ment is
to be con nec ted at the groun ding ter mi nals via an ade qua te ly si zed ca ble to the po ten ti al equa li sa ti on
rail of the buil ding or ot her ground.
Light ning pro tec ti on ele ment with N stan dard ter mi nal and epla ce ab le gas disch ar ge cartridge.
Or der No. 887.870-277
Re pla ce ment car trid ge up to 40 W trans mit ter po wer
Or der No. 887.889-277
2.1.11 Grounding the VHF ground station
The groun ding ter mi nal (M 5 screw with nut) which is cle ar ly mar ked with the groun ding sym b ol is lo ca ted on the back. The VHF ground sta ti on is to be con nec ted via this ter mi nal to the po ten t i al equa li sa ti on rail of the buil ding or sys tem to pro vi de a low oh mic and low in duc ti ve con nec ti on. An ade qua te ly di -
2
men sio ned ca ble of 10mm
co lou red green/yel low shall be used for this pur po se.
Note:
The relevant safety precautions shall be observed.
2.1.12 Over Voltage Protection
The re is an over-voltage pro tec ti on functi on built-in. Af ter over-voltage pro tec ti on ac ti va tes, a mi ni mum
time lap se of 1 min. from the mo ment of swit ching off the in put is re qui red be fo re any in p ut can turn on
the supp ly again. Over-voltage pro tec ti on set ting is fi xed at 115% - 135% no mi nal.
TG480XX.01 Issue 04/07 Page 2-3a
TG480-(025)-(XX)
2.1.13 Tuning Instructions for the co-loca er
Item Description:
The co-location lter is a two section tunable BPF. Helical resonators and variable capacitors make
up the resonant sections which have a tuning range from 116-150 MHz.
Tuning Instructions:
The co-location
not spe
ed. When units are to be tuned outside the factory, it is advisable to use a network or
lter is normally shipped tuned to a center frequency of 116 MHz, if the channel is
scalar analyzer set to the appropriate frequency range and span as required.
There are 2 adjustments that control the resonant frequency of the
lter. They are iden ed on the
envelope drawing as "C1" and "C2," which are capacitors. The only tool required is a small slotted
screwdriver. There is a protectiv
e cap over the capacitor with an access hole for a screwdriver.
Using the screwdriver, rotating the capacitor in a clockwise direction increases the capacitance of
that particular section, lowering the frequency of operation. Conversely, rotating the capacitor in a
counterclockwise direction decreases the capacitance of that particular section, increasing the
frequency of operation.
When tuning the
center frequency with a 5 or 10 mhz span. Depending on where the
lter to a spe c center frequency, it is convenient to set the analyzer to the desired
lter is presently tuned, adjust C1
accordingly until a peak in the response is noted on the analyzer at the desired center frequency.
Adjust C2 in a similar fas
hion un
til the bandpass response is cenetered and the return loss null is
about 18 dB. No other adjustments are required.
2.2 Pin con nec ti on front /rear pla te
2.2.0 Service connector wiring
Pin
1 Vcc
2 TXD
3 RXD
4 SQL (COR)
5 GND
6
7 ALARM
8 V-FOR
9 V-REF
Description
RF Tx
5 1
15
7
Note: TG480 Series RS 232 Adapter must be used if Service port is to be used with a computer.
TG480XX.01 Issue 04/07 Page 2-3b
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