56
Making and Checking RF Settings (UHF)
Quick Check
When there is not enough time for a step-by-step configuration of the system, such as during an event or
concert, check the following three items to verify that the system has been configured properly.
Perform the check after confirming that all antennas and cables are installed, settings for the antenna gain, TX
RF power, RX attenuator, and used frequencies are configured, and the RX equipment is turned on.
Turn off all TX equipment, and check that RF level meters for all RX equipment are off (i.e., not lit).
Turn on all TX equipment except one, check that the RF level meters are off (i.e., not lit) for the RX with the
same frequency as the TX that is turned off, and repeat this check for each TX.
Turn on all TX equipment, and check that the RF indicators for all RX equipment are always lit green under
all envisioned conditions.
If all the above conditions are met, you can reliably operate the system without concerns.
If there is not enough time to check all envisioned operating conditions
’ Turn on all TX equipment, and check that the RF level meters for all RX equipment show 4 to 6 segments
under the normal state (i.e., normal installation at a fixed position).
If the conditions for
,
, and
’ are met, you can operate the system with reasonable reliability.
Note
The body effect has an influence of 10 dB to 20 dB. If the body effect is not present under the normal state,
the addition of the body effect will result in a drop of 10 dB to 20 dB. If the body effect is present under the
normal state, the loss of the body effect will result in an increase of 10 dB to 20 dB. If the RF level meters
show 5 segments under the normal state, the addition or loss of the body effect will result in a showing of 3
or 7 segments respectively, leaving you with an RF level that provides reasonable reliability (RF indicator is lit
green).
If conditions are not met
If condition
is not met, interference exists. Remove computers, Bluetooth mice, mobile phones, game
devices, and other signal transmitting devices away from the area. If the problem persists after removing
the above, interference from another system may be present. Perform a clear channel scan, and reselect
a frequency without interference.
If condition
is not met, third-order intermodulation distortion exists, but as long as condition
③
is met,
you can reliably operate the system.
In addition to checking condition
in such cases, check that the QL meter always shows more than 4
segments.
If time allows, check that conditions
and
are met after adjusting the antenna setup positions,
antenna gain, attenuator, and TX output levels to ensure even more reliable operation.
Conditions for checking
Items for checking
Syste
N
Use of
Cross R
System
ST mo
Opera
Configuring a DWX System
