Tektronix introduced not so high priced TSG4100A series vector signal generator (VSG) at the affordable price of a basic signal generator. TSG4100A can be upgraded in the field to deliver more advanced vector and digital modulation capabilities. "There is a clear need in wireless design and manufacturing for test solutions that are more affordable and still meet demanding requirements," said James McGillivary, general manager of RF and Component Solutions at Tektronix. "Tektronix first made huge strides in filling this void with the highly disruptive RSA306 USB-based spectrum analyzer. Now we are continuing this momentum with the TSG4100A that offers unbeatable price performance in an RF vector signal generator." The TSG4100A series includes three models with carrier frequencies from DC to 2.0 GHz, 4.0 GHz and 6.0 GHz respectively. The instruments provide spur-free outputs with low phase noise of –113 dBc/Hz at 1 GHz, and amplitude accuracy of <+/- 0.4 dB at 1 GHz, 0dBm CW signal from +16dBm to -100 dBm level range and frequency resolution of 1 μHz at any frequency. An oven-controlled crystal oscillator time-base provides <±0.002 ppm temperature stability and <±0.05 ppm aging stability. TSG4100A signal generators offer a wide variety of modulation capabilities. Modes include amplitude modulation (AM), frequency modulation (FM), phase modulation (ΦM), and pulse modulation. There is an internal modulation source as well as an external modulation input. Unlike most analog signal generators, the TSG4100A can sweep continuously from DC to 62.5 MHz. And for frequencies above 62.5 MHz, each sweep range covers more than an octave. Units can be software upgraded to support VSG applications. With the vector upgrade, TSG4100A series offers full support for vector signal modulation on RF carriers between 400 MHz and 6.0 GHz. It features a dual, arbitrary waveform generator operating at 125 MHz for baseband signal generation. The generator has built-in support for the most common vector modulation schemes: ASK, QPSK, DQPSK, π/4 DQPSK, 8PSK, FSK, CPM, QAM (4 to 256), 8VSB, and 16VSB. It also includes the standard pulse shaping filters used in digital communications: raised cosine, root-raised cosine, Gaussian, rectangular, triangular, and more. For additional flexibility, the rear-panel BNC I/Q modulation inputs support arbitrary vector modulation from an external source. The TSG4100A series will be available beginning in March 2015 worldwide. Prices start at $7,300 for entry level configurations. A mid-level vector 4 GHz signal generator is priced at $9,320.