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When you turn the pot to the left eventually you will hear a light click of a
spring. You cannot overturn the pot. You are now at the shortest distance
range. When you start to turn the pot clockwise, you will find that the
distance range will change very slowly in the first few turns. After a few
turns, the distance will change more rapidly until you reach the maximum
range. If you turn the potentiometer clockwise (right) out of the
useable area, the mic will be switched on completely. If this
happens, just turn the pot slightly to the left until the Optogate
works again.
We suggest that the engineer work with each performer to explain the
operation of the unit and then set the range of the Optogate to fit his or her
mic technique and stage set-up. As a rule the closer the performer is to the
mic, the better the results will be due to eliminating the concert lighting
variables.
The Optogates PB-05M and PB-05D, work well with dynamic mics and
condenser mics up to 10 mA current draw. You may find out that the switch-
off time of the indicator led can be a bit different from the real audio switch
time depending of the mic type. A small pwm routine in the Optogate is
responsible for it in order to prevent switching noise. The spindle pot will
adjust to a wide range of mics. The distance range of the Optogate can
change a bit when the ambient light changes. Like every other infrared
device on the market the Optogate units do not work correctly if direct
sunlight or other very high power infrared signals hits the sensor. That is in
the "nature" of the infrared technology due to the random high power
infrared spectrum in the sunlight. You can try it at home with any IR remote
control. No infrared sensor of CD-players, TV's etc. will work in direct
sunlight. If direct sunlight hits the sensor of the Optogate the distance will
decrease until the mic will be switched off. The unit will work again if
somebody moves between the sun and the sensor. Normally you can use the
Optogates on almost every open-air stage without any problems. It is always
a good idea to check the range of your Optogates when changing venues,
especially outdoors with direct sunlight.
Remember the PB-05 E is the same as the Pro except it is designed to only
work with Dynamic Microphones and does not have a bypass button.
Bypassing is accomplished by turning OFF the phantom power to that mic.
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