Sample and hold

GNU Radio
1

Hello,
I would like to construct a sample and hold function with :
src_data=(0,)*4095,1

delay2=gr.vector_source_b(src_data,True)
sample_and_hold = gr.sample_and_hold_ff()

I would like that that sample and hold had a duration of 4096 cycles
(4095 “0” followed by a “1”).
But constructing my vector using src_data=src_data=(0,)*4095,1, I obtain
:
((0, 0, 0, 0, 0, … 0, 0, 0, 0, 0), 1)
instead of
(0, 0, 0, 0, 0, 0,… 0, 0, 0, 0, 1) as I would like

Could you please help me to construct correctly the vector.

Thank you very much,

Pepito

2

On Fri, Jul 11, 2008 at 06:32:12PM +0200, Pepito31 Pepito31 wrote:

:
((0, 0, 0, 0, 0, … 0, 0, 0, 0, 0), 1)
instead of
(0, 0, 0, 0, 0, 0,… 0, 0, 0, 0, 1) as I would like

Could you please help me to construct correctly the vector.

Thank you very much,

Pepito

“,” is the tuple constructor. You are asking it to create a 2-tuple,
where the first element is a tuple of 4095 0’s and the second element
is a 1-tuple containing 1.

Try this instead:

src_data=src_data=(0,)*4095 + (1,)

Eric