Ramsey Electronics RB1 用户手册

RB1

 

 

15 

❒ Connect a suitable 12 volt supply to J1- either 12 VAC or 12 VDC ( positive 

tip). 

❒ Set the frequency range switch to LOW. 

❒ BEFORE turning on the power, please read the WARNING below (also on 

the back of the case) 

❒ Turn on the power. The LED should light and you should hear an annoying, 

high pitched whine. If so, your Rat Blaster is working and ready to chase 
away those nasty critters bothering you. You can change the frequency 
range to whatever you desire and place the Rat Blaster wherever it is 
needed. The unit is tested on low frequency because it is easier for the 
human ear to hear. If it is functioning on low, rest assured that it will 
function on medium and high frequency too! 

❒ If you are not able to hear the high frequency noise and you have a 

voltmeter,you can still check to be sure that your Rat Blaster is functioning. 
Set the meter to AC volts and with the meter leads across the speaker 
terminals you should see about 12 to 15 VRMS on a typical meter. Voltage 
readings will depend on the supply used, of course. If you are getting a 
reading of some kind even if it is not 12 –15 volts, this can be due to the  
variations in different meters but the voltage reading indicates that the unit 
is working.  If you’re using a scope, a bench power supply will give you 
readings of about 33vpp and our AC125 will read about 25vpp. 

If you hear no sound and get no voltmeter reading, it is time to consult the 
troubleshooting guide.