[Python] SCPI command to set an instrument automatically hold onto a certain number of traces...

In my application, Python interacts with an E8361A Agilent Vector Network Analyzer (VNA) to acquire hundreds of thousands of data "blocks". Each "block" consists of 8 S21 traces with each trace being defined in a separate VNA channel.

Each trace is linked with a measurement name according to,

write("CALC" + str(cnum) + "AREF:EXT 'S21_" + str(cnum) + "', S21")
write("DISP:WIND:TRAC" + str(cnum) + ":FEED 'S21_" + str(cnum) + "'")


Each of the 8 traces is swept one time, and then its corresponding S21 data is acquired. The following code snippet shows the general algorithm I follow to acquire, say 100k, of data block with each block containing 8 traces,

for dut_state_indx in range(1,100001):
{... Activate DUT state dut_state_indx}
for cnum in range(1 , 9):
{... Activate Antenna cnum}
write("SENS" + str(cnum) + ":SWEEP:MODE SING")
query("*OPC?")
Sdata = query("CALC" + str(cnum) + "ATA? SDATA")
{... append Sdata as a row to "S21_" + str(cnum) + ".csv"}


This has been working for me; however, the DAQ process could be made more efficient. One way to achieve that is to set the VNA to automatically memorize the trace data for 8 channels (or concatanate the 8 traces into one data block) and then acquire the data block.

In that scenario, 8 single sweeps would still need to be initiated and completed but only one data inquiry is required rather than 8. Is there any SCPI commands to achieve this setting by a one-time implementation rather than constantly interacting with the VNA for hundreds of thousands of times?

The VNA firmware version is A.07.50.67.

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