Keysight N1914A Datasheet page 21

E-Series E9300 Average Power Sensor Specifications (Continued)
Calibration factor (CF) and
reflection coefficient (Rho)
Calibration factor and reflection
coefficient data are provided at frequency
intervals on a data sheet included with the
power sensor� This data is unique to each
sensor� If you have more than one sensor,
match the serial number on the certificate
of calibration (CoC) with the serial number
on the power sensor you are using� The
CF corrects for the frequency response of
the sensor� The EPM Series power meter
automatically reads the CF data stored
in the sensor and uses it to make the
corrections�
Reflection coefficient (Rho) relates to the
SWR according to the following formula:
SWR = (1 + Rho)/(1 – Rho)
Maximum uncertainties of the CF data
are listed in Tables 12a and 12b� As the
E-Series E9300 power sensors have two
independent measurement paths (high and
low power paths), there are two calibration
factor uncertainty tables� The uncertainty
analysis for the calibration of the sensors
was done in accordance with the ISO
Guide� The uncertainty data reported on
the calibration certificate is the expanded
uncertainty with a 95% confidence level
and a coverage factor of 2�
Mechanical characteristic
Mechanical characteristics such as center
conductor protrusion and pin depth are
not performance specifications� They
are, however, important supplemental
characteristics related to electrical
performance� At no time should the pin
depth of the connector be protruding
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Table 12a. Calibration factor uncertainties (low power path).
Frequency
10 to < 30 MHz
30 to < 500 MHz
(E9304A: 9 kHz to 500 MHz)
500 MHz to < 1.2 GHz
1.2 to < 6 GHz
6 to < 14 GHz
14 to < 18 GHz
Table 12b. Calibration factor uncertainties (high power path).
Frequency
10 to < 30 MHz
30 to < 500 MHz
(E9304A: 9 kHz to 500 MHz)
500 MHz to < 1.2 GHz
1.2 to < 6 GHz
6 to < 14 GHz
14 to < 18 GHz
1� The characterized calibration factor should not deviate between periodic calibrations by more than
the specified maximum uncertainty in table 12a or 12b� Compliance is confirmed by the deviation
being less than or equal to sqrt(2) times the specified maximum uncertainty
Uncertainty (%)
1
(25 °C ± 10 °C)
± 1.8%
± 1.6%
± 1.8%
± 1.7%
± 1.8%
± 2.0 %
Uncertainty (%)
1
(25 °C ± 10 °C)
± 2.1%
± 1.8%
± 2.3%
± 1.8%
± 1.9%
± 2.2 %
Uncertainty (%)
1
(0 to 55 °C)
± 2.2%
± 2.0%
± 2.5%
± 2.0%
± 2.0%
± 2.2%
Uncertainty (%)
1
(0 to 55 °C)
± 4.0%
± 3.0%
± 4.0%
± 2.1%
± 2.3%
± 3.3%
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