Clipsal StarServe - Installation Guide, 11635

SECTION 5Video Distribution - How to ConnectAntenna InputThe antenna input of the Video Distribution Unit (VDU) has an F-Type connection. The Clipsal StarServe ® VDU hasbuilt in gain control to enable the optimum signal level to be achieved easily with the turn of a screw.The range of variable gain control is +5dBuV Gain (increase) from incoming signal or –15 dBuV attenuation (loss).The optimum level of signal strength on the output ports of the VDU is 72dBuV.This means that a minimum signal level of 69dBuV is required at the antenna input (a small margin is allowedfor variation between signals).The maximum signal level that can be connected to the antenna input is 89dBuV.The modulator input signalstrength must be within15dBuV of the outputfree to air signal.It is ideal to get the signallevels as close as possible.69dBuVminimumStep 1Measure the incoming signal from the antenna. If the signal is between 69 - 89dBuV, you can connect to the ClipsalStarServe ® VDU via the antenna input. If the signal strength is below 69dBuV, you will need to EITHER replace theantenna with a larger model OR use an amplifi er to increase the signal strength.If the signal strength is over 89dBuV, you will have to attenuate the signal via a drop tap.Step 2Measure the signal strength from the VDU output. Adjust the variable gain control until you reach 72dBuV.40 INSTALLATION GUIDE