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R&S ZVB
Manual Alignment and Recording Correction Values
1145.1078.82 2.11
E-1
Factory System Error Calibration
A complete factory N-port system-error calibration is performed on all the network analyzer’s
measurement ports. This involves directly connecting the O, S and M calibration standards to each port
and then connecting the ports together in pairs using a cable as a T standard. All port pairs must be
considered. If the analyzer has four ports, this means that there are six ways of connecting the ports
together in pairs, i.e. port pairs 1-2, 1-3, 1-4 then 2-3, 2-4 and finally 3-4. The number of connection
pairs for a 3-port instrument goes down to three and there is only one way of pairing off the ports of 2-
port analyzer.
The TOSM method is used for calibration. The procedure is illustrated using a 4-port instrument, but the
principle is the same for 2-port and 3-port instruments:
PRESET
SWEEP : NUMBER OF POINTS : 1000
POWER BW AVG : MEAS BANDWIDTH : 100 HZ
CAL : START CAL : FOUR PORT P1 P2 P3 P4
The SELECT PORT CONNECTOR(S) dialog, which can be skipped with NEXT, is displayed. The
MEASURE STANDARDS dialog then appears. The “Standards to be measured” list then shows the
calibration standards. When the calibration standards have been connected, the calibration
measurement is started by clicking the appropriate button.
Finally, click the APPLY CAL button.
When you click on the CAL button again, CAL MANAGER appears with a dialog in which the "Channel
Cal" calibration must be copied to the CAL POOL under the name "Factory". Then, the Windows
Explorer is used to copy the file Factory.cal which is now in the directory
C:\Rohde&Schwarz\Nwa\Calibration\Data to the directory C:\Documents and
Settings\All Users\Application Data\Rohde&Schwarz\Nwa\Data\Eeprom\Mbt.
Service Function
3.5.0.2
then uses this file to program the MB-EEprom. This can take about a minute.
Restart the network analyzer to check that it is functioning properly.
Summary of Contents for ZVB 4
Page 57: ...Instrument Construction and Function Description R S ZVB 1145 1078 82 I 3 2 E 1 ...
Page 133: ...1145 1078 82 5 5 E 1 Spare Parts List Mechanical Drawings ...
Page 142: ...1145 1078 82 5 15 E 1 Block Circuit Diagram ...
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Page 153: ...1145 1078 82 5 17 E 1 Circuit diagrams ...
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