def timing_test_ascii():
IP = "192.168.100.254"
PORT = 24000
NUM_MEASUREMENTS = 100
# Default TCP socket and default setup
start_time = pc()
sock = SocketConnection(IP, PORT)
tt.tester_default_setup(sock)
sock.send("FORM:READ:DATA ASC") # ASCII mode download
print("Setup took {:.2f} s".format(pc() - start_time))
# Ensure the tester is ready.
sock.wait_op_complete()
results = np.empty(NUM_MEASUREMENTS)
for i in range(NUM_MEASUREMENTS):
# Trigger!
sock.send("VSA1; INIT")
# Ensure the trigger is done before downloading measurement, but don't block
sock.send("*WAI")
start_time = pc()
power_samples_bytes = sock.send_recv_all(
'CAPT:SEGM1:SIGN1:DATA:SUBS:PVT? 16000000, 0, 5e-3')
results[i] = pc() - start_time
sock.close()
print("Sample download time; mean: {:.3f} s, variance: {:.3f} s".format(
results.mean(), results.var()))
def basic_transfer_test():
IP = "192.168.100.254"
PORT = 24000
IQVSG_FILE = "waveforms/testfile.iqvsg"
REMOTE_IQVSG_FILE = "/user/uploaded_waveform.iqvsg"
# Default TCP socket and default setup
start_time = pc()
sock = SocketConnection(IP, PORT)
tt.tester_default_setup(sock)
# Get response in binary format
sock.send("FORM:READ:DATA PACK")
# Prepare....
sock.wait_op_complete()
print("Setup took {:.2f} s".format(pc() - start_time))
###
# Upload the example waveform file.
# Read file to upload
with open(IQVSG_FILE, 'rb') as f:
file_data = f.read()
# Construct and send upload command
dlen = len(file_data)
dlen_len = len(str(dlen))
upload_data = b"MMEM:DATA '" + REMOTE_IQVSG_FILE.encode() + b"', " + \
b"#" + str(dlen_len).encode() + str(dlen).encode() + \
file_data
sock.send(upload_data)
# Load and execute the new waveform
sock.send("*WAI; VSG1;" + "WAVE:LOAD '" + REMOTE_IQVSG_FILE + "';" +
"WAVE:EXEC ON; WAI*")
###
# Download the measured samples back
# Trigger!
sock.send("VSA1; INIT")
# Download samples
sock.send('*WAI; CAPT:SEGM1:SIGN1:DATA:IQ?')
IQ_samples_bytes = sock.recv_arbitrary()
# Done with the socket connection
sock.close()
# Convert ot float and compare
IQ_samples_bin = np.frombuffer(IQ_samples_bytes, dtype=np.float32)
I_samples_bin = IQ_samples_bin[::2]
Q_samples_bin = IQ_samples_bin[1::2]
def timing_test_binary():
IP = "192.168.100.254"
PORT = 24000
NUM_MEASUREMENTS = 100
# Default TCP socket and default setup
start_time = pc()
sock = SocketConnection(IP, PORT)
tt.tester_default_setup(sock)
sock.send("FORM:READ:DATA PACK")
print("Setup took {:.2f} s".format(pc() - start_time))
# Ensure the tester is ready.
sock.wait_op_complete()
results = np.empty(NUM_MEASUREMENTS)
for i in range(NUM_MEASUREMENTS):
# Trigger!
sock.send("VSA1; INIT")
# Ensure the trigger is done before downloading measurement, but don't block
sock.send("*WAI")
start_time = pc()
SEPERATE = False
if SEPERATE:
# Download I measurement
sock.send('CAPT:SEGM1:SIGN1:DATA:SUBS:I? 16000000, 0, 5e-3')
I_samples_bytes = sock.recv_arbitrary()
# Q measurement
sock.send('CAPT:SEGM1:SIGN1:DATA:SUBS:Q? 16000000, 0, 5e-3')
Q_samples_bytes = sock.recv_arbitrary()
else:
# Download I/Q measurement
sock.send('CAPT:SEGM1:SIGN1:DATA:IQ?')
IQ_samples_bytes = sock.recv_arbitrary()
results[i] = pc() - start_time
sock.close()
print("Sample download time; mean: {:.3f} s, variance: {:.3f} s".format(
results.mean(), results.var()))
def timing_test_iqvsa():
IP = "192.168.100.254"
PORT = 24000
NUM_MEASUREMENTS = 100
# Default TCP socket and default setup
start_time = pc()
sock = SocketConnection(IP, PORT)
tt.tester_default_setup(sock)
sock.send("FORM:READ:DATA PACK")
print("Setup took {:.2f} s".format(pc() - start_time))
# Ensure the tester is ready.
sock.wait_op_complete()
results = np.empty(NUM_MEASUREMENTS)
for i in range(NUM_MEASUREMENTS):
# Trigger!
sock.send("VSA1; INIT")
# Ensure the trigger is done before downloading measurement, but don't block
sock.send("*WAI")
start_time = pc()
# Save data to iqsva file
iqvsa_filename = "'/Capture/test_uwb_capture.iqvsa'"
sock.send("CHAN1;capt:segm1:stor " + iqvsa_filename + ";")
sock.send("*WAI; MMEM:DATA? " + iqvsa_filename)
power_samples_bytes = sock.recv_arbitrary()
results[i] = pc() - start_time
sock.close()
print("Sample download time; mean: {:.3f} s, variance: {:.3f} s".format(
results.mean(), results.var()))
def samples_download_time():
# We use a Zadoff-Chu sequence to get some random data, because that's what I had at hand ¯\_(ツ)_/¯
FS = 2.4e9
zc_sequence = generate_zc_sequence(997, 7)
IQ_bytes = waveform.iq_to_bytes(zc_sequence)
waveform_bytes = waveform.bytes_to_waveform(
IQ_bytes,
fs=FS,
template_file='instrument_control/waveforms/template.iqvsg')
expected_duration = len(zc_sequence) * (1 / FS)
###
# Socket connection
sock = SocketConnection()
tt.tester_default_setup(sock)
tt.tester_set_capturetime(1e-6 + expected_duration, sock)
remote_name = tt.upload_waveform(waveform_bytes, sock=sock)
# Setup the tester
tt.tester_setup_repeat(remote_name, sock, n_repeats=1)
tt.tester_setup_ext_triggers(sock)
tt.tester_arm(sock)
tt.tester_ext_trigger(sock)
st = pc()
# Download the samples
samples = tt.download_waveform(sock, send_trigger=False)
print("No wait time:", pc() - st)
sock.close()
###
# Socket connection
sock = SocketConnection()
tt.tester_default_setup(sock)
tt.tester_set_capturetime(1e-6 + expected_duration, sock)
remote_name = tt.upload_waveform(waveform_bytes, sock=sock)
# Setup the tester
tt.tester_setup_repeat(remote_name, sock, n_repeats=1)
tt.tester_setup_ext_triggers(sock)
tt.tester_arm(sock)
tt.tester_ext_trigger(sock)
st = pc()
sock.wait_op_complete()
print("Tester wait time:", pc() - st)
st = pc()
# Download the samples
samples = tt.download_waveform(sock, send_trigger=False)
print("With wait time:", pc() - st)
sock.close()
# Pad to make the detection less obvious
zc_sequence_padded = np.pad(zc_seq_upsamp, (245, 50), 'constant')
# Pack into the waveform format the tester expects
IQ_bytes = waveform.iq_to_bytes(zc_seq_upsamp)
waveform_bytes = waveform.bytes_to_waveform(
IQ_bytes,
fs=FS,
template_file='instrument_control/waveforms/template.iqvsg')
###
# Socket connection
expected_duration = len(zc_sequence_padded) * (1 / expected_bandwidth)
sock = SocketConnection()
tt.tester_default_setup(sock)
remote_name = tt.upload_waveform(waveform_bytes, sock=sock)
tt.tester_setup_repeat(remote_name, sock, n_repeats=1)
tt.tester_set_capturetime(1e-6 + expected_duration, sock)
tt.tester_setup_ext_triggers(sock)
tt.tester_arm(sock)
tt.tester_ext_trigger(sock)
samples = tt.download_waveform(sock, send_trigger=False)
sock.close()
### Sample analysis
# The sample where the sequence approximately starts.
approximate_start = 1750