Clipsal StarServe - Installation Guide, 11635

SECTION 2Introduction to MATV BasicsSignal StrengthThe principals of signal strength for MATV systems are not unlike that of the electrical principals for voltage at power points.The units of measurement are as follows:• electrical unit of measurement is the Volt (V)• MATV unit of measurement is the decibel Micro Volt (dBuV), commonly referred to as “dB”.The ideal voltage for a power outlet is 240 Volts, with a tolerance of 5%. This means that you can have as low as 228Volts or as high as 252 Volts to comply with the Australian Standards.The voltage is measured using a multimeter. You set the multimeter to the voltage setting and test for voltage. Theideal signal level for a combined analogue / digital MATV system is similar.The ideal MATV signal strength at the outlet is 69dBuV with a tolerance of 5%. For excellent quality pictures, yourequire signal strength between 65-72dBuV. The MATV signal strength is measured using a fi eld strength meter. Youset the fi eld strength meter to the channel you wish to test and it will show you a reading of the signal at the outlet.Ideal Signal LevelsMATV Outlet - 69dBuVStandard Outlet - 240VTest with fi eld strength meterTest with multi meterLOWACCEPTABLE HIGHSIGNAL SIGNAL SIGNALTOO LOW TOO HIGH69dBuV62dBuV 65dBuV 72dBuV 75dBuV228V 252VA fi eld strength meter is ESSENTIAL.INSTALLATION GUIDE7