Avlex ACT-818 Wideband Single-Channel Digital Receiver - Manual (Page 16)

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General Tips for Improving System Performance
! Since the installation of the antenna influences the operating efficiency of the
receiver, the most important rule is to minimise the distance as much as possible
between the receiving antenna and the microphone for the best reception and
performance.
! Use MIPRO supplied antennas to ensure proper receiver sensitivity.
! A built-in worldwide approved switching power supply assures stable performance in
the range of 100-240V AC mains power input.
! The antenna socket provides an 8V DC biased output. RF, shorting the antenna
socket should be avoided. Temporary shorts on the antenna socket will not affect
system performance (provided the short is removed), however, a continuous short
on the socket may cause permanent system damage.
! If extended reception distance is required, installing a MIPRO wideband active
directional antenna kit (AT-90W) will increase antenna performance and thus achieve
better range.
! Proper antenna distribution is vital to achieving ideal performance from multiple
wireless systems operating in the same environment. To greatly reduce antenna
clutter in multi-system installations, a MIPRO AD-707a UHF wideband antenna
divider system is recommended. Each AD-707a supports up to four UHF diversity
receivers to operate from a single pair of antennas. When combined with an AT-70A
omni-directional extension antenna and an AT-70B antenna booster or an AT-90W
wideband active directional antenna, the AD-707a antenna divider provides optimal
signal reception with minimal dropouts or interference. Note that the AD-707a
antenna divider must match the same band designation (7A,7B,8A,8B etc.) as the
receiver to ensure proper operation.
! MIPRO's factory preset “interference-free” channels within the same channel group
are recommended to ensure optimum performance from multiple wireless systems
installed in the same venue. Use of preset “interference-free” channels from
different channel groups may cause interference due to intermodulation issues, and
is therefore not recommended.
Wideband Digital Receivers Wideband Digital Receivers
Troubleshooting
Symptom Solutions
No Sound ! Power-on receiver & transmitter.
! Receiver is plugged into a power outlet and cable connected
to mixer/amplifier.
! Fresh batteries in transmitter and inserted with correct
polarity.
! Match receiver & transmitter frequency.
! Close proximity between the transmitter and receiver antenna.
! Line-of-sight path between the transmitter and receiver
antenna.
! Reposition the receiver and/or receiver antennas.
! Receiver antennas are connected.
! Elevate receiver antennas as high as possible.
! Keep hands off of the transmitter antenna.
! Close proximity between the transmitter and receiver antenna.
! Adjust antenna orientation.
! Reposition the receiver and/or receiver antennas.
! Receiver antennas are connected.
! Undamaged antennas.
! Fresh batteries in transmitter.
! Adjust for proper squelch level setting.
! Match receiver & transmitter frequency.
! Adjust for proper squelch level setting.
! Reduce transmitter gain, if set too high.
! Recommendation: set to 0dB (Mic Level).
! Reduce receiver output setting.
! Proper setting on mixer input gain or integrated amplifier mic
level control.
! Fresh batteries in transmitter.
Signal Drop-outs
Limited Range
No RF Signal
Distortion