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Estimated Mic Channel Count
The scanner provides two estimate levels for MXW microphones:
Conservative (More Robust)
Reference this channel estimate for maximum channel stability. It includes extra usable spectrum for optimal interference
avoidance, allowing multiple microphones to find available frequencies simultaneously.
Aggressive (More Channels).
Reference this estimate to get the most channels on air. It reserves only the minimum required extra spectrum for interfer
ence avoidance. Be sure to occasionally monitor the spectrum and make channel adjustments if the RFI increases.
Performing a Scan
Follow these steps to perform RF scan.
Tip: Perform the scan during typical hours of operation to best capture the typical interference in an environment.
1.
Ensure all typically used devices are turned on, including any MXW equipment already in use.
2.
Place the new MXW Access Point near the location it will be mounted.
3.
Ensure the APT is on the same network and set to the same subnet as the other MXW equipment.
4.
Open MXW control software to the Monitor tab. Make sure the new Access Point is selected from the drop down on the
top left corner of the Monitor tab.
5.
Select the Spectrum Scanner to open the window.
6.
Select the Start Scan button at the top of the window. If any microphones are Linked to that Access Point, they will be
turned off during the scan.
7.
For best results, allow the scan to run for up to 24 hours to get a full snapshot of the spectrum throughout the day.
Press End Scan to end the scan mode.
PHS Detection
The APT scanner may discover interference from devices that have priority in the JDECT (Z12) spectrum. When personal
handy-phone systems (PHS) are detected, the MXW system will automatically reduce operation to 67% of typical spectrum
use.
The APT automatically scans for PHS upon power up and when the Spectrum Scanner is manually launched from the Monitor
tab. The Spectrum Scanner includes the PHS limits when calculating the maximum channel estimates to provide the safest es
timates.
Excluding PHS Bands
To operate in the JDECT spectrum without worrying about PHS interruption, set the MXW access point (APT) to exclude PHS
channels. This reduces the number of MXW channels available, but ensures that microphones will never be overridden in the
event of PHS detection.
1.
Go to MXW control software > Utility tab.
2.
Select the APT and open the device properties.
3.
Select PHS Exclusion.
4.
Select Add Updates to close the window.
5.
Start the update by selecting Apply All from the Utility page.
Identifying PHS Detection Errors
When operating in the JDECT band without PHS Exclusion, transmissions from adjacent MXW systems can trigger a PHS de
tection.
Shure Incorporated
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