pydoocs read parameter

1 macro pulse number (trainID)

2 start index

3 increment

4 number of elements

import pydoocs
pydoocs.__version__

'3.0.0'

GHz ADC trace

address = "FLASH.FEL/ADC.ADQ.BL1/EXP1.CH00/CH00.DAQ.TD"

pydoocs.read(address)["data"].shape

(60000, 2)

start = 10000       # not implemented in DOOCS server

pydoocs.read(address, parameters=[-1, start, -1, -1])["data"].shape

(60000, 2)

increment = 1000

pydoocs.read(address, parameters=[-1, -1, increment, -1])["data"].shape

(59, 2)

elements = 100

pydoocs.read(address, parameters=[-1, -1, -1, elements])["data"].shape

(100, 2)

DOOCS test trace

address = "TEST.DOOCS/SINGENERATOR/SIN/DATA.TD"

pydoocs.read(address)["data"].shape

(2048, 2)

start = 1000      

pydoocs.read(address, parameters=[-1, start, -1, -1])["data"].shape

(1048, 2)

increment = 100

pydoocs.read(address, parameters=[-1, -1, increment, -1])["data"].shape

(20, 2)

elements = 10

pydoocs.read(address, parameters=[-1, -1, -1, elements])["data"].shape

(10, 2)

Readout time

from time import time
import numpy as np
import matplotlib.pyplot as plt

address = "FLASH.FEL/ADC.ADQ.BL1/EXP1.CH00/CH00.DAQ.TD"

elements = list(range(0,60000,100))
durations = []

for element in elements:
    start_time = time()
    pydoocs.read(address, parameters=[-1, -1, -1, element])
    duration = time() - start_time
    durations.append(duration*1000)

fig = plt.figure(figsize=(8,8))
plt.plot(elements,durations,"o")
plt.xlabel("number of elements")
plt.ylabel("readout (ms)")

Text(0, 0.5, 'readout (ms)')