CDP Menu Key Sequence: Measurements > Demodulator > CDP WCDMA/HSDPA CDP Menu Zoom: Select a zoom function of 32, 64, or 128 codes. Zoom Start: Enter the required zoom start code. For example, to start at code 2, enter 2. Control Channels: Select a control channel mode between Rel, Abs, and Delta. Back: Returns to the “Demodulator Menu”.