Q:

I see that the CMX867 data sheet / data bulletin has a paragraph that discusses the need for an additional 7dB of "trans-hybrid" loss. What is this talking about, and why do I need it?

1
Like
Answer
Comment
Flag
Thanks for your feedback!
A:

1 Answer

rank
1
2
Like
Comment
Flag
A. The trans-hybrid loss refers to attenuation of the Tx output signal that gets fed back into the Rx input path of the same device.If the 7dB trans-hybrid loss is not provided then the sensitivity in originate mode will be reduced from the minimum "must detect" value of -43dB.This reduction in sensitivity is due to 2400Hz carrier rejection in the receiver path being around 36dB.While the addition of 7dB of trans-hybrid loss will result in optimum performance, neglecting the additional 7dB of trans-hybrid loss will not prevent operation and may be acceptable in some applications.  more

Related Videos

Add your answer...

Top Answerers

1.
Cheap SSL Certificates
7 Answers in the past week
2.
vanity fair
7 Answers in the past week
3.
Robert Turner
4 Answers in the past week

Top Askers

1.
Frank Bell
2 Questions in the past week
2.
Frank Bigaglow
3 Questions in the past week
3.
Charles McAtee
2 Questions in the past week

Top Supporters

1.
Tom Wagner
9 Likes given in the past week
2.
Susan Brunner
3 Likes given in the past week
3.
CableAnd OtherThings Too
2 Likes given in the past week
...