The TAS 4600A Noise & Interference Emulator provides a convenient, thorough approach for testing RF communications equipment by emulating the co-channel and adjacent channel interference present in wideband communications systems. The TAS 4600A allows thorough testing in a laboratory setting and drastically reduces the time required for product tests. By providing precise carrier to noise (C/N) and carrier to interference (C/I) conditions, the TAS 4600A can be used to test a wide range of wireless voice and data communication equipment, including cellular telephones, cellular modems, personal communication terminals, wireless LANs, pagers, and wireless network equipment. TAS 4600A provides advanced testing features to address a wide range of RF communications technologies. The 4600A delivers these features in a modular format, so your test system can evolve to meet your testing needs for years to come. The TAS 4600A has the following modular features: • Plug-In RF Channel Modules • Plug-In CW Interference Module • Plug-In RF Power Meter • Plug-In System Software PCMCIA Card A single TAS 4600A emulates up to two independent wide bandwidth RF channels, each with independent additive interference, see Figure 1-1. A wide range of C/N, Eb/N0, and C/I characteristics can be programmed for each channel. In addition, the 4600A allows the output power of each RF channel to be directly programmed over a wide dynamic range to allow testing at very low carrier levels.