EVM failure when testing Remote Radio Head in chamber test
时间：04-08
整理：3721RD
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Hi All,
I have a question on remote radio head(RRH). When I were testing RRH in chamber test, I found "Error Vector Magnitude(EVM)" failure on certain specs.
This is an RF product.
Why EVM fails at chamber test? During chamber test, we set +55 deg celcius for hot and -35 degree celcius for cold.
Before we bring to chamber test, we tested the RRH unit in normal production area and it passed but why it fails in chamber test?
Waiting for ur reply.
regards,
Saran
I have a question on remote radio head(RRH). When I were testing RRH in chamber test, I found "Error Vector Magnitude(EVM)" failure on certain specs.
This is an RF product.
Why EVM fails at chamber test? During chamber test, we set +55 deg celcius for hot and -35 degree celcius for cold.
Before we bring to chamber test, we tested the RRH unit in normal production area and it passed but why it fails in chamber test?
Waiting for ur reply.
regards,
Saran