Technalogix Ltd
TAUD-1000 Transmitter
VIII-12
Initial Hook Up
1. Ensure that the antenna has been swept and, ideally, has a return loss of greater than 20dB
(VSWR = 1.2:1). This should be done before connecting the antenna cable to the system’s
output. The power amplifier’s control system allows the user to change the VSWR trip point
up to a maximum level of 1.8:1. Strive for the lowest possible return loss to maximize
transmission distance and improve operating performance. VSWR levels between the trip
point set by the user and 1.8:1 will cause a fold back in power. VSWR levels past 1.8:1 will
cause the system to shut down to avoid damage.
2. Place the transmitter/translator in its permanent location near a receptacle supplying the
required AC or DC mains voltage.
3. Place an appropriate AC or DC power line protector, conditioner, and/or surge suppressor
across the supply line.
4. Connect the transmitting antenna cable to the RF OUT N-type female connector on the PA
enclosure’s RF output. On medium and higher power systems, the RF OUT connector will
be 7-16 DIN female (or an alternative if the customer requested a different connector). The
system must be loaded into a 50-ohm antenna before any power is turned on.
5. Check that your baseband digital source is present, whether it is from an encoder, mux, or
otherwise, to feed the modulator if the system is a transmitter. If the system is a translator,
ensure that the modulated RF signal is present at the input to the processor/translator that
will feed the power amplifier.
6. Connect the CATS cables from the combiner outputs (2) to each CAN on the power
amplifier.
7. Hook up the modulator or processor as shown in their respective manuals for a transmitter
or translator. If the modulator or processor was produced by Technalogix, then the RF
output level has already been set and optimized for optimum performance and should not
be adjusted. Power level adjustment can be made through the power amplifier. If the front
end modulator or processor was not produced by Technalogix, ensure that modulator or
processor RF output level is turned down as far as possible. This will help ensure that the
different product does not overdrive the power amplifier due to mismatched RF levels.
8. Do not connect the modulated signal from the RF OUT on the modulator or processor to RF
IN on the power amplifier at this time. Because of the characteristics of LDMOS devices, the
RF drive should not be connected to the power amplifier until after the power supply and
bias voltages are present and stable.
9.
If the power amplifier system includes a power supply that is external to the power amplifier
enclosure, install the DC power supply leads (4 AWG) between the power supply enclosure
and power amplifier enclosure. If the power supply is internal to the amplifier, then all DC
wiring is already hooked up.
Содержание TAUD-100
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Страница 69: ...Technalogix Ltd Adrenaline Control System VI 66 SNMP Configuration ...
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Страница 97: ...Thank you for choosing Technalogix Ltd ...