Jason, what Tektronix instrumentation do you have? I am now contending with the same question you are asking. The Agilent looks like a vector network analyzer. I wager it is an excellent instrument, but may not be a good choice for the application you are describing. Polar do not offer the flexibility of Agilent or Tektronix analyzers, but their instruments, as far as I can tell, are less vulnerable to mechanical and ESD damage. I'll say no more here at the moment, not wanting to risk boring TechNetters with details. You are welcome to contact me outside the forum. Louis Hart -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Jason Zhao Sent: Saturday, August 16, 2014 12:18 AM To: [log in to unmask] Subject: [TN] Impedance System, Polar vs. Agilent Hi, Our company (a PCB manufacturer) is about to add a new Impedance measuring system to replace the old Tektronix. We are looking at both Agilent (E5071C) and Polar (CITS880). Can anyone advise the pros and cons of the two brands, and what is a better choice for a board fabricator to satisfy a wide variety of customers, especially the Telecomm industry? Thank you in advanced. Best regards, Jason Zhao VP of North America Operations Sunshine Global PCB Group US Cell 510-468-4412, China Cell 131-62722392 www.sunshinepcbgroup.com ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________