User`s guide

240 Chapter 8
CDMA Digital Modulation
IS-95A Modulation
Modifying the Code Domain Power
Press
Adjust Code Domain Power > IS-97 Levels.
You now have a custom, forward 33 channel CDMA signal at IS-97 power levels, with an
inserted traffic channel carrying user-defined data at a Walsh code of 45 on table row 8, as
shown in the following figure.
Generating the Waveform
Press
Return > Return > CDMA Off On.
This generates a waveform with the custom CDMA state created in the previous sections. The
display changes to CDMA Setup: 32 Ch Fwd (Modified). During waveform generation, the
CDMA and I/Q annunciators appear and the predefined digital modulation state is stored in
volatile memory. The waveform is now modulating the RF carrier.
For instructions on storing this custom CDMA state to the non-volatile memory of the signal
generator, see “Storing a Component Test Waveform to Memory” on page 218.
Configuring the RF Output
1. Set the RF output frequency to 890.01 MHz.
2. Set the output amplitude to
−10 dBm.
3. Press
RF On/Off.