R&S ZVB - Page 848

R&S
®
ZVA / R&S
®
ZVB / R&S
®
ZVT Command Reference
SCPI Command Reference
Operating Manual 1145.1084.12 – 30 833
[SENSe<Ch>:]CORRection:COLLect[:ACQuire]:SELected THRough | OPEN |
SHORt | MATCh | NET | ATT | REFL | SLIDe | LINE | LINE1 | LINE2 | LINE3 | LINEN,
<index> | OSHort | OSHORT1 | OSHORT2 | OSHORT3 | UTHRough | ISOLation,
<port_no>, <port_no> [, <Dispersion>, AUTO | <delay | phase>]
Starts a calibration measurement in order to acquire measurement data for the selected standards. The
standards are reflection or transmission standards and can be connected to arbitrary analyzer ports.
For successful execution of a subsequent SENS:CORR:COLL:SAVE:SEL, complete measurement
data sets must be available for all selected calibrations. See the description of
[SENSe<Ch>:]CORRection:COLLect:METHod:DEFine) for background information.
<Ch>
Channel number
THRough ...
ISOLation
Standard types: Through, Open, Short, Match, Symmetric Network (NET),
Attenuation (ATT), Reflect, Sliding Match (SLIDe), Line l (1 ≤ l ≤ 99), Offset Short 1
to 3 (OSHort), Unknown Through, Isolation.
LINE and LINE1 are equivalent.
LINE<l> and LINEN,l are equivalent for l=1,2,3.
<port_no>
Port numbers of the analyzer. For a transmission standard (through, line,
attenuation, symmetric network) the input and output port numbers must be
specified, for reflection standards, only one port number is required.
*RST value
–
<Dispersion>
Optional status parameter for UTHRough standard:
OFF – Unknown through standard is non-dispersive
ON – Unknown through standard is dispersive
*RST value
OFF
AUTO | <delay
| phase>
Optional entry of delay time or phase for UTHRough standard:
AUTO – The analyzer determines the delay time or phase during the calibration
sweep
<delay or phase> – entry of the delay time in ps (for non-dispersive standards) or of
the phase at the start frequency of the sweep in deg (for dispersive standards). If
an estimate of the start phase is entered, the analyzer uses the calculated value
which is closest to the estimate.
Automatic determination of the phase
The UOSM algorithm provides the transmission factor of the unknown through
standard up to an ambiguous sign. This yields the two alternative phase values
displayed in the calibration wizard; see Unknown Through Standard.
In remote control, the analyzer performs a plausibility check in order to determine
the correct phase. No manual selection is necessary. The check starts at the first
sweep point, using the transmission factor with negative phase. The analyzer
measures the phase at the subsequent sweep points, assuming that the phase
difference between any two consecutive points is less than 90 deg. From these
phase values, the analyzer calculates a linear extrapolation and derives an
estimate for the DC phase limit. If this DC phase is in the vicinity of ... –180 deg,
+180 deg, ... then the transmission factor with negative phase is adopted. If the DC
phase is in the vicinity of ... 0 deg, +360 deg, ... then the transmission factor with
inverted sign (corresponding to a 180 deg phase shift) is adopted.
*RST value
AUTO