hp8753 manual

Hi, everyone. Now I am using HP 8753 Network Analyzer to do 1-port S parameter measurement. If I want to save the data into a floppy disk, what kind of file does it save? Does it include real and image part of the reflection coefficient? It seems it's not correct.... is it related to the electrical delays? Are there any reference or manual related to it, since I don't have the manual of the NA....

I think it saves s-parameter data in the CITI format.

Apparently HP have a utility to convert it to Touchstone (.s2p) format.

I found a perl script which was designed to work with data from HP8753D at:
http://tools.rfdude.com/s2putils.zip

Cheers.

There are 2 way to add (or substract) a path to the reference planes: Port Extension and Delay. Both modify the spar.

If you don't need the delay or port extension, i suggest to save data only if on the left part of the screen appear only the label "Cor" and no more labels.

In any case i'll try to find an E-copy of the hp8753 to send you.

Hi, thanks for the reply, first...
In fact, I have tried to save the data using save/recall(hard)->Save State(soft)
and the other options setting is: SELECT DISK->INTERNAL DISK
And the data file format is DATAXX.D1.

And the content is:
CITIFILE A.01.00
#NA VERSION HP8753E.07.74: Oct 30, 2002
NAME DATA
VAR FREQ MAG 801
DATA S[2,2] RI
SEG_LIST_BEGIN
SEG 700000000 2200000000 801
SEG_LIST_END
BEGIN
-2.26928E-1,2.05749E-1
...
END

But it seems it is not the real and image part of the S22 which I use....

Hi,

You can only get touchstone file format if you have a full 2 port calibration done. i.e. full-term. If I remember correctly, change data format to ascii with data array on then save state and you will get *.snp files.

Element7k

correct!
Agilent 8753 and 872x series may save all 4 spar only if the VNA is full2port calibrated.

Also, the math format (RI rather than MA) may depend on what the screen is showing. To get data MA formatted, you should display the smith chart (or polar... i don't remember exactly).

In any case, download spar from a VNA, often has been a tedious, non friendly operation.
If you have a GPIB card i suggest the use of Agilent Intuilnk for VNA. It's for free. It simplify drammatically spar download into the PC.

Hi can you tell me how to perform port extension in HP8753 VNA.. are there any step by step describing manual available?
Thanks
Steve