Hello
I have some questions regarding the VCA 8500 board are as follows:
1) Do i get output of 8 channels (J21 through J28 ports) from the VCA 8500 board simultaneously?
2) Regarding power supplies of the board : If i want to use only TGC mode and do not use CW mode, do i still need to supply power for CW mode amplifiers (+15/-15 V).
3) We want to apply fixed gain to all the channels with out doing any time gain correction and in order to obtain fixed gain through all channels, how do we set up the voltage controlled attenuator on the board to maintain fixed gain through all the channels? Is a fixed gain achieved by providing 1.2 V to the V cntrl (J9 port) (which is like disabling the Voltage Controlled Attenuator if i understand correctly) ?
4) When i look at the manual, inputs to the VCA 8500 board are given through SMA jack connectors. What is the input impedance looking at these connectors ?
Thank you very much.