頁面 14 – MIPRO ACT-311 Single-Channel Diversity Receiver User Manual

Page 14

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General Tips for Improving System Performance

1. Since the installation of the antenna influences the operating efficiency of the

receiver, the most important rule is to minimize the distance as much as possible

between the receiving antenna and the microphone for the best reception and

performance.

2. Use MIPRO supplied antennas to ensure proper receiver sensitivity. The external DC

power supply should not fall under 12V, otherwise it would not work properly. If it is

over 15V, some components of the receiver will be damaged.

3. The antenna socket provides an 8V DC biased output. RF shorting on the antenna

socket should be avoided. Temporary shorting on the antenna socket will not affect

system performance; however, continuous shorting on the antenna socket will cause

permanent system damage.

4. If extended reception distance is needed, installing a MIPRO AT-90W directional

antenna kit, which includes internal boosters will increase the reception distance.

5. Proper antenna distribution is vital to achieving ideal performance from multiple

wireless systems operating in the same venue. To greatly reduce antenna clutter in

multi-system installations, a MIPRO AD-707a, UHF 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 wide-band

directional antenna, the AD-707a antenna divider provides optimal signal reception

with minimal dropouts or interference.

6. 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, thus is not recommended.

Wireless Accessories & Replacement Parts

FB-71:

Rackmount kit fits 1 ACT-311B/ACT-311 or ACT-312B/ACT-312 receiver

alone.

FB-72:

Rackmount kit fits 1 ACT-311BT/ACT-311T or ACT-312BT/ACT-312T receiver

alone.

FBC-71:

Rear-to-front cables only(1-pair). It allows front mount antenna placement

for improved reception quality.

AT-20:

Detachable 1/2 Wave Coaxial Antenna.

AD-707a: UHF 4-channel Wideband Antenna Divider System (480MHz ~ 1GHz).

AD-90w: UHF Wideband Directional Antenna (480MHz ~ 1GHz).

AT-70:

UHF Ground Plane Antenna (1-pc, 2-pcs recommended).

AT-70B:

UHF Antenna Signal Booster (1-pc, 2-pcs recommended).

AD-90S:

UHF 4-Channel Wideband Power Splitter.

AT-90A:

UHF 4-Channel Wideband Power Amplifier.

AD-808:

UHF 4-Channel Active Antenna Combiner.

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Diversity Wireless Systems

Diversity Wireless Systems

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