The ZVA67 vector network analyzer is now available as a four-port model, which the company claims to be the first network analyzer on the market to feature four test ports for measurements up to 67 GHz. Dynamic range is 110 dB and output power is 6 dBm, both at 67 GHz. Reportedly, the instrument allows users to determine the S parameters of multiport devices quickly and with high precision. Other features include four integrated signal sources and eight receivers, plus a power sweep range beyond 40 dB. Optional frequency converters extend frequency range to beyond 325 GHz. ROHDE & SCHWARZ INC., Columbia, MD. (888) 837-8772.