Transmitter Power Output : This one we normally set/configure at the reader correct? If there are 4 anttenas connected to the reader, and let say I set to "A" power output, does it mean "A" power will go to each reader or it will be distributed equally? And the EIRP is the calculation for all antennas or single antenna?
Antnnea Gain : This one normally given & shown in the market, such as "UHF RFID Linear Polarization Antenna 7dBi/9dBi/12dBi". And for circular it will be "UHF RFID Circular Polarization Antenna 7dBd/9dBd/12dBd". Is this correct? So it doesn't mean I always have to go for higher dBi gain during purchasing (like megapixel), I will only go for higher gain antenna such as 12dBi / 12dBd if there should be alot of line loss (perhaps due to low cost cable) and even if I choose to go for the highest dBi gain antenna 12dBi, I'll need to make sure it will still be in 2 Watts range of the EIRP?
Cable Loss : Do you mind pasting me some websites for this kind of device? Thanks.
EIRP and ERP actually measured in dB or dBm? I'm getting different answer from the internet.
EIRP is power radiated by Isotropic antenna & ERP is power radiated by Dipole antenna. Which one is isotropic and which one is dipole? I have Motorolla fixed reader, CSL fixed reader, SiRIT fixed reader, how do i know which is which and whch calculation to use (EIRP / ERP).
Thank you very much guys, sorry if my understanding is low. I'm not for engineering / technical background, I'm more to business that wish to learn.