Effort International TX3000 Manuale utente
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RF SYSTEM（RS009）Manual
TX3000
TUNING GUIDE
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Contents
Chapter 1 Introduction ...................................................................................................................3
1.1. Basic Description of the Transmitter Electronics...............................................................3
1.1.1. Digital Part ..............................................................................................................7
1.1.2. Analog Part..............................................................................................................7
1.1.3. Power Supply / Filter Part.......................................................................................7
1.2. Receiver Electronics ..........................................................................................................8
Chapter 2 RX3000 Filter Concept..................................................................................................8
Chapter 3 TX3000Cable\Opto Synchronization Setting ................................................................ 9
3.1. TX3000 cable synchronization setting...............................................................................9
3.2. TX3000 Opto Synchronization Setting ............................................................................14
Chapter 4 Tuning..........................................................................................................................19
4.1. One (1) Opto TX Output ..................................................................................................19
4.2. Preparation .......................................................................................................................19
4.3. Power On Adjustments.....................................................................................................20
Chapter 5 Appendix .............................................................................................................22
5.1. TX3000 Board..................................................................................................................22
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5.2. Socket Specifications .......................................................................................................22
Chapter 1
Introduction
This manual describes the TX3000 as well as the setup and tuning procedures needed to
put the TX3000 and RX3000 electronics into operation. For details on the receiver board,
see the RX 3000 Tuning Guide.
1.1. Basic Description of the Transmitter Electronics
Each transmitter electronic is able to feed one OEA antenna with a swept HF signal of 8.2
MHz. In order to avoid disturbances between the emitted HF signals, synchronization
with other transmitters must be guaranteed.
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The standard version of the TX3000 board allows the 82Hz sinusoidal modulated 8.2
MHz HF carrier signal to be:
−generated locally (oscillator circuit for master applications), or alternatively.
−to be regenerated from an optically received swept HF signal of another
TX3000 (opto receiver for slave applications).
The bi-opto version of the TX3000 additionally allows the onboard generated (master) or
received-and-then-regenerated- (slave)-swept HF-signal to be converted and optically
transmitted in order to synchronize additional transmitters.
The two opto transmitters used in the bi-opto version allow:
−a master transmitter to synchronize two other optically slaved (and possibly
repeating) transmitters.
−an optically slaved transmitter to be used as repeater to synchronize two other
optically slaved transmitters.
By using 3 bi-opto transmitter boards (TX3000) (one used as synchronization master and
two as synchronization repeaters) and 4 standard TX3000 (as synchronization slaves),
clusters of up to 7 TX3000 may be synchronized. This way up to 7 checkout or 14
exit-gates (in a row) may be configured without need of a master rack.
Since the optically transmitted synchronization signal may be repeated only once, a
master rack still has to be used if more than seven transmitters have to be synchronized.
The cable version of the TX3000 additionally allows the onboard generated (master) or
received-and-then-regenerated- (slave)-swept HF-signal to be converted and optically
transmitted in order to synchronize additional transmitters.
The two cable transmitters used in the cable version allow:
−a master transmitter to synchronize, a other optically slaved (and possibly
repeating) transmitters.
Two block diagrams and layout of the TX3000 board are shown on the next 2 pages.
The board consists of a digital part，an analog part and a power supply/filter part.
The standard version of the TX3000 is fully equipped with the exception of the two
optional opto transmitters. It can be used as a master-TX3000 for small installations
(single or dual gates equipped with one TX3000 only) or as slave-TX3000 for all larger
applications.
The bi-opto version of the TX3000 board is almost identical to the standard version. The
only difference is that the two opto transmitters (IR-LED's) are already mounted. The
bi-opto TX3000 board can be used as a Master-TX3000 in medium installations (2 to 7
TX3000) or as synchronization signal repeating Slave-TX3000 for medium to very large
installations.
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1.1.1. Digital Part
In master operation, the 82Hz sinusoidal sweep is fed to the voltage controlled oscillator
(VCO). The VCO generates the swept and digitalized 8.2MHz signal. This frequency
modulated signal is digitally amplified (FET power amplifier), filtered to get a clean
analog output signal and finally radiated by the antenna. If the current exceeds the
allowed limit (short circuits, wrong antenna etc.) the power amplifier will shut slowly
down, because it is temperature controlled. This action is indicated by a red LED
(overloaded = OFF).
In slave operation, the swept HF signal is optically received, converted and regenerated. It
can then be used to directly feed the power amplifier. A set of jumpers (J14 and J15) is
used to switch between master and slave operation. Jumper J4 is used to select the desired
sweep frequency.
If the board is equipped with two opto transmitters (bi-opto TX3000 board), the swept HF
signal will be automatically output (see section 4). This allows the synchronization of two
additional transmitters.
1.1.2. Analog Part
Different antenna types can to be connected to the relevant output circuit (connector X4).
The TX3000-mounted matching circuits and harmonic suppression filters are optimized
for use with 200 Ohm antennas.
The TX3000 is not designed to drive other types of antennas. All equipment
and system guarantees will be lost and all field support will be charged if other types of
antennas are used without our written approval of OEA.
1.1.3. Power Supply / Filter Part
The TX3000 can be powered (connector X1/IN) by DC as well as AC power supplies.
The integrated power line filters:
−suppress noise between the electronics and the power line
−suppress conducted noise on the power line itself.
The filtered power is available at connector X2/OUT and can be used to feed other
equipment(TX3000, RX3000). For additional information, see section 2, TX3000 Filter
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Concept.
1.2. Receiver Electronics
For detailed information on the receiver, see RX 3000 Tuning Guide.
Chapter 2
RX3000 Filter Concept
False alarms due to conducted noise on the power lines can be avoided if the power lines
are filtered every 4 to 6 meters.
If TX3000’s are used, this is done automatically and the power line between the
transmitters is not longer than 6 (8.2MHz) meters. If the length of the power cable
between the transmitters is longer than 4 to 6 meters, additional filter boards have to be
use. RX3000 boards use the same kind of filter. Due to the limited space available,
however, the RX3000 filter only protects the receiver electronics itself, it doesn't
contribute to the filtering of the power line.
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Chapter 3
TX3000Cable\Opto Synchronization Setting
3.1. TX3000 cable synchronization setting
On the TX3000 are two optional Wire Cable Sockets,one is Cable In and the other is
Cable Out.
3.1.1. TX3000 cable synchronization output setting (master)
•J15 must be 2-3 IN
•must be connect by twisted-pair
The system can provide two sets of cable out.On the board of TX3000,it is annotated as
X4(Cab Out), N0. 1 and 2 of X4 is the first group ,and N0. 3 and 4 is the second
group.The setting of one group sync output is same to the two groups sync output(refer to
the above).Each cable out should connect to the corresponding sockets. E.g. If you use the
first group of cable ,you should connect to the N0.1 and 2 sockets of X4（refer to the
figure of TX layout 1).
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3.1.2. TX3000 Cable Synchronization Input setting (slave)
•J14 must be 2-3 IN
•J15 must be 1-2 IN
•must be connect by twisted-pair
The system can provide two sets of cable in.On the board of TX3000,it is annotated as
X3(Cab In), N0. 1 and 2 of X3 is the first group ,and N0. 3 and 4 is the second group.You
only need one group in actual use.Each cable in should connect to the corresponding
sockets. E.g. If you use the first group of cable, you should connect the N0.1 and 2
sockets of X3（refer to the figure of TX layout 2).
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