Tips For Good Rf Performance; Common Sources Of Rf Interference - SABINE SWM7000 Operating Manual

Quick Setups
Antenna Placement Caution
As a general precaution, keep 2.4 GHz or
900 MHz cordless telephones, microwave
ovens, WLAN antennas and 2.4 GHz
wireless video camera transmitters twice
the distance from your Sabine wireless
microphone system antennas as that of
your Sabine transmitters.
Sabine Smart Spectrum ® Wireless

3.3. Tips for Good RF Performance

• It is best to keep the system's channels close together at the low or high
end of the spectrum, i.e. channels 1, 2, 3, 4, 5 or channels 65, 66, 67, 68 (31,
32, 33, 34 on the SWM6000 series). If there are other 2.4 GHz or 915 MHz
sources in the room, grouping the channels reduces the chances of overlap.
Do not start by spreading your channels throughout the full channel range of
the system -- you are more likely to encounter interference this way.
• Avoid potential sources of RF interference by performing a scan using Sabine's
Remote Control Software., which will reveal the ambient RF level in your
area on each channel of your system. Please refer to Section 13.4.2.5. for
information on the RF Scan function, which will automatically determine the
best RF channels to use.
• If you cannot perform a scan then proceed to use your system, beginning
with Channel 1. If you hear any RF "hits" or dropouts, then move to another
of the available channels. If you have multiple mics keep all your channels
grouped together.
• For best results, maintain line-of-sight from transmitter to receiver. Use either
front or rear panel antenna mounting to maintain line-of-sight.
• Mount receiver antennas at 90 degrees to one another, leaning away at 45
degree angles, in the same plane.
• When using multiple receivers, try to maintain at least 1 foot (30 cm) distance
between antennas from different units. When such antenna spacing proves
difficult or impossible, we recommend using Sabine's SWA6SS Antenna
Distribution Amplifier. The SWA6SS works with up to six receivers, or 12
channels.
• Maximize the distance between the receiver and light sources, such as fluo-
rescent bulbs or neon signs, which may emit very short-range, broadband
interference.
• Maximize the distance between transmitters and receivers and potential
sources of RF interference.
• Maintain a minimum distance of at least 3 meters (10 feet) between transmit-
ters and receivers or extension antennas. This can solve many anomalies.
• Turn on your system one component at a time, beginning with the first re-
ceiver.
• Be careful not to set more than one transmitter to the same channel; each
paired transmitter and receiver should be set to unique corresponding chan-
nels, until all channels are receiving clearly and cleanly.

3.4. Common Sources of RF Interference

• Microwave ovens: In the vast majority of situations, interference from mi-
crowave ovens will not affect performance of your SWM series microphone
systems. Since barriers such as walls work to block interference, a microwave
oven will likely present a problem only when located in fairly close proximity
within the same room as the wireless receiver (or reception antenna). See
caution at left.
Wireless Local Area Networks (WLANS): These computer network devices
•
allow computers to connect via wireless devices that act as both receivers and
transmitters. These low-powered transceivers often have selectable channels
and can utilize the entire 2.4 GHz band. In general, Sabine microphones
should not be affected by these WLANS because their spread spectrum
technology does not present a problem for the Sabine Smart Spectrum
system. The Sabine wireless system will not interfere with the WLAN. See
caution at left.
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