Keysight E4990A - Page 360

E4990A Help
350
Query Response
{numeric (C0 [F])}<newline><^END>
Examples
Dim Var as Double
Ana.WriteString ":CALC1:EPAR:PC0? 1E6",True
Var=Ana.ReadNumber
Related Commands
:SENS:SWE:TYPE
Equivalent Softkey
No equivalent key is available on the front panel.
COM Command Syntax (Internal Control Only)
SCPI.CALCULATE(Ch).EPARAMETERS.PC0
:CALC<Ch>:EPAR:S4
Type
Query
Syntax
:CALCulate<Ch>:EPARameters:S4?
Description
This command returns the result of the 4-device equivalent circuit
parameters of a crystal oscillator. The sweep parameter should be
frequency, and the measurement parameter should be Z-θ for this
analysis.
C0, C1, L1 and R1 are calculated using the following equations.
C0 = C1 × fr
2
/(fa
2
- fr
2
)
C1 = 1 /(Q × R1 × 2 × π × fs)
L1 = Q × R1 /(2 × π × fs)
R1 = 1 / Gmax
Q = |fs / (f2 - f1)|
If there are no fa and fr points on the admittance chart, C0 is calculated
using the following equation.
C0 = Bfs /(2 × π × fs)
Query Response
{numeric1 (C0)}, {numeric2 (C1)}, {numeric3 (L1)}, {numeric4 (R1)},
{numeric5 (fs)}, {numeric6 (fa)}, {numeric7 (fr)}, {numeric8 (f1)},
{numeric9 (f2)} <^END>