AnsweredAssumed Answered

Phase and Load Problems...

Question asked by sven on Jul 14, 2006
Latest reply on Aug 30, 2006 by Dr_joel
Hi Support-Team. I'm new to calibration...

HP8722ET;7,68;8. Mrz 01
REFLECTION PORT CH1
85052D CAL KIT - OSL
POWER=-5dBm
NOP=3
IFBW=10Hz
AVG OFF
Center=15/18/26GHz
Span=0
CAL ON
INTERPOL OFF
POLAR

f.e. Reflection 10m SMA Koaxcable 2.92mm:

I made ReflectionPort Calibration and then measured by mismatched SHORT:

15GHz: SHORT 1U -164°
18GHz: SHORT 1U  127°
26GHz: SHORT 1U -55.6°

By the way:

26GHz: OPEN 1U +124°

26GHZ: LOAD -47°,-16°,-26°
26000000000, 1.3347E-2,-4.7622E+1
26000000000, 8.8339E-3,-1.5907E+1
26000000000, 8.8871E-3,-2.6073E+1

I just don't know what I'm expecting for the phase...
if this measurement of the phase is correct?

what about the phase changing LOAD by the 3 NOP?

Is it enough to take the 85052 CAL KIT by the menu?
what about the specific length of the cable?

I thought calibration means that the system is like normed, f.e. ~0°, ~180°

is there a helpfull reference? I've got the agilent handouts...

thanks a lot, regards....  

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