Tektronix 1405
TV Sideband Adapter
The 1405 TV Sideband Adapter works with 279X, 275X, 271X, and 49X series Spectrum Analyzers (not included) to analyze the sideband and in-band response of a television transmitter. It generates a composite video signal, the "picture" portion of which is a constant amplitude sinusoidal signal that sweeps continuously and periodically between 0 and 15MHz. This signal is applied as modulation to a modulator or transmitter. The output is displayed on the spectrum analyzer and appears as a response curve, typically to within plus or minus 0.2 dB, of the transmitter being tested.
