feedback AntennaLab 57-200-USB, Руководство оператора, Страница: 17 / 31

Chapter 2
BoufoobMbc!
OPERATOR’S MANUAL Installing
BoufoobMbc
2-4 57-200-USB
If this is the case, specify one of the following (depending on your operating system):
Operating system Sys file path
Windows 98, ME C:\windows\system32\drivers
Windows 2000, XP C:\winnt\system32\drivers
(Where 'C:' is the drive where your operating system is installed.)
Once your computer has completed the installation, your USB device is ready for use. It is
not necessary to remove the case of your computer or adjust any switches.
Once the USB interface units are installed, you may then connect the workboards.
2.4 Hardware Setup
The measurement accuracy of the 57-200, as of all antenna testing systems, is affected by
reflections from its surroundings. In order to obtain the highest performance, an open field
site or anechoic chamber would be necessary; however, excellent results for teaching can
be obtained in a typical laboratory. The design separation between the two antennas is 3
metres. If very high gain antenna systems were being tested, then a greater distance
would be needed to obtain the plane wavefront necessary to give accurate results.
Conversely in a difficult situation with low gain antennas and high levels of room reflection,
closer separation can be tolerated. Situations where good reflectors, such as metal, are in
close proximity should be avoided.
Place the generator tower, 57-200 Generator on a table or bench where it is about one or
two metres from the computer. The receiver tower, 57-200 Receiver, should be located
about three metres from the generator tower. It is not advisable to have the computer
between the two, as there should be as much space as possible around the two towers in
order to reduce reflections.
2.4.1 Connecting the Computer
It is important that you install the 57-903 BoufoobMbc USB driver software before
you connect the hardware to the computer.
Once the driver software is installed and the USB interface unit connected to the
computer, connect the interface unit to the computer socket on the generator tower using
the 25-way ribbon cable. You can fit it only one way round and into only one of the sockets
on the tower base.