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Summary of Contents for Formula Sound Sentry MK2
- Page 1 SENTRY USERS MANUAL...
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Page 2: Installation Information
ENVIRONMENTAL NOISE CONTROL SYSTEM INSTALLATION INFORMATION The Sentry MK2 basically performs the same functions as the original Formula Sound Sentry but with added features and options. • New case design provides easier connections via cable entry knock-outs and screw terminals •... - Page 3 Operation The Sentry features a large bar-graph VU meter with 23dB range to give a visual indication of the noise level in a venue. This has the advantage over other units in that anyone can see the volume level and can see how their actions are contributing to this level. While the meter is operating in the green section, with even an occasional peak into the red, there is no cause for concern.
- Page 4 Sentry back away from the stage to position (B) will minimise the problem In order to help solve difficult location problems provision is now included to connect a remote microphone to the Sentry MK2. See Drg No 879 for more details. Page 3...
- Page 5 (A 32amp fully fused boxed contactor with low voltage interface has been designed for use with the Sentry and is available from Formula Sound Ltd) The extra safety and possible lower installation costs stemming from the fact that only low voltage cable is required between the Sentry and contactor at minimal current are added benefits.
- Page 6 Installation Select and install a suitable contactor, arranging the installation to control all the power outlets in the vicinity. (If any are left uncontrolled it will not take very long for the enterprising band or D. J. to find and use them. It is inadvisable to arrange control of only half the outlets in a venue). In very large installations, it is a simple matter to make 1 contactor control many others of whatever current rating is required.
- Page 7 If you find that you have problems with unauthorised persons tampering with the settings, security screws are available to replace the cover screws, a special key is also supplied for the fitting and removal of these screws. Contact FORMULA SOUND sales office for more details Page 6...
- Page 8 The position of one jumper plug selects the response on the measuring microphone. The positions are shown on the P.C.B. Ensure that the jumper is seated correctly. Special weighting options are possible - contact Formula Sound for further details. External Microphone connection A 3 way terminal strip is provided for the connection of a remote microphone.
- Page 11 SENTRY MK2 ADDENDUM Sentry “A” weighting Option An “A” weighting option is available for applications that require it i.e. Industrial noise applications. ‘A’ weighting is a frequency response curve that resembles the human ear response. It is much more sensitive in the mid 500Hz - 5kHz region. It is selected by placing the weighting response selector in the top position.
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