Redpitaya Forum

Hi,

I was trying to produce a sine pulse wave(burst) via a python script using the SCPI interface.

I ran into a problem and was wondering if you could help?

I wanted to produce a 1MHz freq sine wave with number of repeats = 22 and a repeat time of 100. I would like the pulsed wave to be on indefinitely until I pass a specific command to stop.

What I have observed is that the pulsed wave does come on for a short time but then automatically switches off. This is despite me making the SOUR1:BURS:NOR -1.

Could you please help by providing guidance as to how can I make the burst be on indefinetly?

My code below.




import sys
import redpitaya_scpi as scpi

rp_s = scpi.scpi(sys.argv[1])

wave_form = 'sine'
freq = 1000000
ampl = 1
numberOfWaves = 22
repeatTime = 100

rp_s.tx_txt('GEN:RST')
rp_s.tx_txt('SOUR1:FUNC ' + str(wave_form).upper())
rp_s.tx_txt('SOUR1:FREQ:FIX ' + str(freq))
rp_s.tx_txt('SOUR1:VOLT ' + str(ampl))

rp_s.tx_txt('SOUR1:BURS:STAT ON')


rp_s.tx_txt('SOUR1:BURS:NCYC ' + str(numberOfWaves))
rp_s.tx_txt('SOUR1:BURS:NOR -1')

rp_s.tx_txt('SOUR1:BURS:INT:PER ' + str(repeatTime))
rp_s.tx_txt('SOUR1:TRIG:SOUR INT')
rp_s.tx_txt('SOUR1:TRIG:IMM')

rp_s.tx_txt('OUTPUT1:STATE ON')
print("Burst on")

Maximum amount of repetitions equal to the upper border of <count> = {1...50000, INF}. It means that upon installing INF, the number of repetitions is not infinite but equals to 50000.