The enhanced noise modules of series NC1000 generate AWGN up to +13 dBm and have a bandwidth of up to 18 GHz. High-power modules are designed for testing the immunity of cable TV equipment, secure communication channels, and military jamming systems. Lower power modules, ≤ 0 dBm, serve as sources of random jitter for various applications, including PCIexpress, Infiniband, and 10 GigE. The bandwidth, output power, and flatness can be adjusted for specific applications. A recently developed TTL-controlled attenuation feature is also available.