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Glitch level of HMC1119

Thread Summary

The user measured a 12dB drop in RF signal level at 300MHz when changing the ATT from 16dB to 15dB on the HMC1119 evaluation board, which is significantly larger than the previously reported 0.64dB glitch. The final answer suggests repeating the transition test to verify results, and notes that a 10dB dip is observed. The user is concerned about the impact of level fluctuation during ATT changes in their system.
AI Generated Content
Category: Hardware
Product Number: HMC1119

Hi,

In a previous answer to "As for Safe-State Transiton of HMC1119", the glitch was about 0.64dB. I obtained an HMC1119 evaluation board and measured it, and found a drop in level of about 12dB. This was when the ATT was changed from 16dB to 15dB. The RF signal was 300MHz. Is there anything I should be careful of when measuring?

Best regards,

Akira