themaccabee
Full Member level 4
Hi,
I'm wondering what is causing this problem.. can somebody help me..
I'm doing a (digital + RF) board testing...So there are 3 ports LO-out RF-out & IF-in from the board to connect a mixer board.The RF signal is decided by the digital section it is a 2 carrier W-CDMA signal.The problem is that this mixer board connected to main board fails occasionally..
I had evaluated this mixer separately and it is working fine...when connecting to the board at certain times this mixer fails & draws more current..
The LO & RF signal is well within the absolute maximum/typical ratings..
What could be the problem..??
Is there any particular sequence to be followed while turning ON the mixer like
first LO then supply,then RF or something like that??
The mixer I'm using is HMC483.Can we do something providing some sort of protection in the Mixer PCB??
Thanks for any help.
I'm wondering what is causing this problem.. can somebody help me..
I'm doing a (digital + RF) board testing...So there are 3 ports LO-out RF-out & IF-in from the board to connect a mixer board.The RF signal is decided by the digital section it is a 2 carrier W-CDMA signal.The problem is that this mixer board connected to main board fails occasionally..
I had evaluated this mixer separately and it is working fine...when connecting to the board at certain times this mixer fails & draws more current..
The LO & RF signal is well within the absolute maximum/typical ratings..
What could be the problem..??
Is there any particular sequence to be followed while turning ON the mixer like
first LO then supply,then RF or something like that??
The mixer I'm using is HMC483.Can we do something providing some sort of protection in the Mixer PCB??
Thanks for any help.