The Correction (Calibration) Methods offered for the FieldFox allow you to balance higher accuracy or a faster sweep time. Several methods are available through SCPI that are NOT available using the front-panel user interface. For example, all of the Cal Methods normally available only in NA mode are also available programmatically in CAT modes.
About Calibration SettingsA calibration session that is performed using the front-panel is completely separate from a calibration session that is performed programmatically. Therefore, calibration settings that are made remotely (such as setting the cal kit and connectors) can NOT be observed from the front-panel user interface. Alternatively, calibration settings are that are made from the FieldFox front panel (user interface) can NOT be queried programmatically.
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Non-insertable DUT – A device whose connectors could NOT mate together. They either do not have the same type of connector or they have the same gender. This also means that the test port cables could NOT mate together as in the above diagram.
Insertable DUT – A device whose connectors could mate together. They have the same type of connector and opposite or no gender. This also means that the test port cables could mate together, as in the above diagram.
Flush THRU - When the test port cables mate together when measuring an Insertable DUT. The THRU standard has no loss and no electrical length.
Sweep Directions – Relevant to N9923A ONLY.
Sweep in FORWARD direction means port 1 is the source port and port 2 is the receiver port. Used to measure S11 and S21. (N9912A sweeps in forward direction ONLY)
Sweep in REVERSE direction means port 2 is the source port and port 1 is the receiver port. Used to measure S22 and S12.
Full 2-Port and QSOLT Cals result in correction that requires background measurement sweeps in both directions, regardless of the displayed measurements. The displayed traces are updated at a slower rate than Enhanced Response and 1-port cals, which require sweeps in one direction only.
Insertablility - Not Relevant
S-parameters Corrected: S11 or S22 (N9923)
Standards: OPEN, SHORT, LOAD
Sweeps in ONE direction.
Mechanical or QuickCal (Opt 111 or 112)
Corrects all S-parameters.
Non-Insertable or Insertable DUT
Standards: OPEN, SHORT, LOAD on BOTH ports. Known (characterized) THRU between ports.
Sweeps in BOTH directions.
Note: Because FULL 2-Port method requires a known THRU connection between the test ports, it is better to use SOLR, which yields the same level of accuracy with ANY (unknown) THRU connection. SOLR is performed when calibrating both ports from the front-panel user interface.
Also known as Unknown Thru calibration.
Mechanical Cal ONLY
Most comprehensive calibration. Corrects all S-parameters.
Non-Insertable or Insertable DUT
Standards: OPEN, SHORT, LOAD on BOTH ports. Any THRU between ports.
Sweeps in BOTH directions.
Mechanical Cal ONLY
Quicker to perform than Full 2-port. Corrects all S-parameters.
Insertable DUT only
Standards: OPEN, SHORT, LOAD on ONE port. Flush THRU between ports.
Sweeps in BOTH directions.
Forward (all models) OR Reverse (All models with Full 2-port option)
Mechanical or QuickCal (Opt 111 or 112)
Faster measurements than Full 2-Port because sweeps in one direction ONLY.
Insertable DUT only
S-parameters Corrected: S21 and S11 (Forward) OR S12 and S22 (Reverse)
Standards: OPEN, SHORT, LOAD on ONE port. Flush THRU between ports.
Least accurate Cal type - correct Magnitude ONLY.
Mechanical Cal ONLY
Perform same as Data/Memory or THRU Normalization
Standards: OPEN or SHORT (1-port) or THRU (2-port)
Cal Methods click to learn more |
Command click to see command |
Ports <p> |
Req'd Options |
QuickCals |
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QCAL:CAL <p> |
1 |
111 |
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QCAL:ERES <p> |
1,2 |
111, 110 |
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Mechanical Cals - specify connector and cal kit |
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SOLT1 <p> |
1 |
None |
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ERES <p> |
1,2 |
110 |
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Response Cals |
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OPEN <p> |
1 |
None |
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SHORT <p> |
1 |
None |
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THRU <p> |
1,2 |
110 |
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N9912A Options
CAT Mode - Standard
Option 110 - Adds 2-port (Fwd) measurements
Option 111 - Adds QuickCal
Option 303 - Adds NA Mode
Cal Methods click to learn more |
Command click to see command |
Ports <p> |
Req'd Options |
QuickCals |
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QCAL:CAL <p> |
1 (1-port) |
112 |
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2 (1-port) |
122,112 |
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1,2 (2-port) |
122,112 |
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QCAL:ERES <p> |
1,2 (Fwd) |
112 |
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2,1 (Rev) |
122,112 |
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Mechanical Cals - specify connector and cal kit |
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SOLT1 <p> |
1 |
None |
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2 |
122 |
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SOLT2 <p> |
1,2 |
122, 2111 |
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SOLR <p> |
1,2 |
122, 2111 |
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QSOLT <p> |
1,2 or 2,1 |
122, 2111 |
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ERES <p> |
1,2 |
None |
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2,1 |
122 |
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Response Cals |
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OPEN <p> |
1 |
None |
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2 |
122 |
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SHORT <p> |
1 |
None |
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2 |
122 |
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THRU <p> |
1,2 |
None |
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1. N9923A requires Option 122. For FieldFox N9914/5/6/7/8A and N995xA models with firmware versions ≥A.07.00, Option 211 is required. Option 211 requires Option 210.
N9923A Options
NA Mode - Standard
Option 112 - Adds QuickCal
Option 122 - Adds Full 2-port (Fwd and Rev) Measurements
Option 305 - Adds CAT Mode
All other A Series FieldFox Model Options
For a comprehensive list, view the FieldFox Configuration Guide at: http://literature.cdn.keysight.com/litweb/pdf/5990-9836EN.pdf
All B Series FieldFox Model Options
For a comprehensive list, view the FieldFox Configuration Guide at: http://literature.cdn.keysight.com/litweb/pdf/5992-3701EN.pdf