Agilent Technologies 4294A Operating Manual page 295

Table 8-19 Example of data saved in touchstone format
#_KHZ_S_MA_R_50‹
1.00000000000e-01_3.33525005034e-01_-7.73675665259e-02‹
4.00009600000e+03_3.33353237003e-01_9.86914411187e-02‹
8.00009200000e+03_3.33415398880e-01_1.85199186206e-01‹
1.20000880000e+04_3.33583392524e-01_2.72698938847e-01‹
1.60000840000e+04_3.33311851436e-01_3.00653338432e-01‹
2.00000800000e+04_3.33375343866e-01_3.66584867239e-01‹
2.40000760000e+04_3.33422417685e-01_4.29817110300e-01‹
2.80000720000e+04_3.33443503503e-01_4.86124992371e-01‹
3.20000680000e+04_3.33431173499e-01_5.43855965137e-01‹
3.60000640000e+04_3.33431097810e-01_5.90200841427e-01‹
4.00000600000e+04_3.33366487197e-01_6.40886545181e-01‹
4.40000560000e+04_3.33259086931e-01_6.97765290737e-01‹
4.80000520000e+04_3.33099293459e-01_7.51655459404e-01‹
5.20000480000e+04_3.32939275455e-01_8.12797546387e-01‹
5.60000440000e+04_3.32774633027e-01_8.78330588341e-01‹
6.00000400000e+04_3.32566849713e-01_9.49001610279e-01‹
6.40000360000e+04_3.32357601579e-01_1.02763938904e+00‹
6.80000320000e+04_3.32137379193e-01_1.11495888233e+00‹
7.20000280000e+04_3.31905989161e-01_1.20526015759e+00‹
7.60000240000e+04_3.31703851783e-01_1.30251085758e+00‹
8.00000200000e+04_3.31460080009e-01_1.41421270370e+00‹
8.40000160000e+04_3.31262034449e-01_1.52120709419e+00‹
8.80000120000e+04_3.31105522810e-01_1.64604377747e+00‹
9.20000080000e+04_3.30970807903e-01_1.77705621719e+00‹
9.60000040000e+04_3.30877281129e-01_1.91649520397e+00‹
1.00000000000e+05_3.30887617271e-01_2.05756402016e+00‹
Symbols in the table ‹ : return, _ : tab
Now look at the structure of data saved in the touchstone format. The data can be divided
into the option line and data lines.
The option line starting with "#" is placed at the beginning of the file. The structure of the
option line is as follows. Table 8-20 shows the meaning of each symbol.
# <Frequency unit> <Parameter> <Format> <Characteristic impedance>
Table 8-20 Structure of option line
Symbol
#
<Frequency unit>
<Parameter>
<Format>
<Characteristic
impedance>
Chapter 8
Analysis and Processing of Result
Save and Recall the Agilent 4294A Internal Data
Description
Indicates that this line is the option line.
Indicates the frequency unit. For the 4294A, it is fixed to kHz.
Specifies the type of parameters in data lines. For the 4294A, "S"
is specified that indicates the S parameter.
Specifies the format. For the 4294A, "MA" is specified that
indicates the format using an absolute value and phase.
Specifies the characteristic impedance. For the 4294A specified
is "R 50", meaning 50 W.
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