I need to create an RF signal using the PXI-5610 & 5421 with the following characteristics:
1. Carrier frequency = 300 MHz
2. One second wide pulse
3. AM modulated at 90% mod depth with the following signal
a. At time t=0 sec, 6300 Hz
b. At time t=1 sec, 6700 Hz
c. Linear sweep between 0 to 1 sec, i.e. at 0.5 sec the instantaneous frequency should be 6500 Hz.
I have tried numerous combinations of blocks to no avail. It seems that I would need to define an arbitrary waveform of 100MSamples in order to cover the 1 second pulse, which of course I don't want to do. If I try to define a manageable waveform of say 100KSamples, it works but the sweep is only over 1msec and the repeats 1000 times over the one second - obviously not what I want.
Any help would be appreciated!