What frequency am I using?
The Wireless Modem comes in two varieties: 900 MHz and 2.4 GHz. The 900 MHz waves penetrate objects
and travel better than their 2.4 GHz counterparts. If you are in the U.S., Canada, Australia or Israel, you are
using the 900-MHz radios. The 2.4-GHz radios must be used in European countries and where the ETSI
standard is required.
Can I use a directional antenna?
Directional antennas will have better gain than the omni-directional antennas. While the omni-directional-
gain antennas can improve performance in line-of-sight applications, the performance in non-line-of-sight
situations is very similar to a dipole. If you need to maximize range, using a gain antenna may be the best
solution.
Is the antenna mounted properly?
Using long antenna cables or having the antenna right next to metal can reduce performance. Antenna
cables add loss to a system. Using a shorter antenna cable can help keep the losses to a minimum. Often, a
longer serial data cable can be used in conjunction with a shorter coaxial cable to keep antennas in a
desired location. The radiating portion of the antenna should not touch other metal objects or be mounted
right next to them.
This can cause the antenna to operate inefficiently. It is best to allow at least several inches of separation
between the antenna and other metal structures or objects.
4.5 OPW Switch Settings
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1-watt modem (6 LEDs near connector).
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Set DIP Switch #1 and #5/#6 ON, all others OFF.
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Connect the supplied RS-232 cable to the modem and to the serial port on the PC.
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Launch the X-CTU software and select PC settings to test the serial port, when OK (all default settings).
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Connect power to the modem and make sure power switch is up, then select modem configuration and
read. You will see the current configuration of the modem.
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Under Networking, change the HP to #6.
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You can now do a range test or, for a 2-modem system, set switch #5/#6 ON and all others OFF.
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Ready to test with a system or to ship out.
Doc. No.: M00-20-7074 Rev.: 6
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Содержание M00-20-7074
Страница 22: ...7 Select the discovered modem s 8 Select Add selected devices Doc No M00 20 7074 Rev 6 Page 22 of 43...
Страница 23: ...9 Click the Radio Module on the left to verify configure Doc No M00 20 7074 Rev 6 Page 23 of 43...
Страница 32: ...c Wait for the modem s to be detected 7 Select the discovered modem s Doc No M00 20 7074 Rev 6 Page 32 of 43...
Страница 36: ...3 Select the discovered modem s 4 Select Add selected devices Doc No M00 20 7074 Rev 6 Page 36 of 43...
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