Atec Agilent-EPM Series - Manual (Page 19)

19
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 auto-
matically 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.
Table 12a. Calibration factor uncertainties (low power path)
Frequency
Uncertainty (%)
(25 °C ±10 °C) Uncertainty (%)
(0 °C to 55 °C)
10 MHz to 30 MHz ± 1.8% ±2.2%
30 MHz to 500 MHz
(E9304A: 9 kHz to 500 MHz) ±1.6% ±2.0%
500 MHz to 1.2 GHz ±1.8% ±2.5%
1.2 GHz to 6 GHz ±1.7% ±2.0%
6 GHz to 14 GHz ±1.8% ±2.0%
14 GHz to 18 GHz ± 2.0 % ±2.2%
Table 12b. Calibration factor uncertainties (high power path)
Frequency
Uncertainty (%)
(25 °C ±10 °C) Uncertainty (%)
(0 °C to 55 °C)
10 MHz to 30 MHz ± 2.1% ±4.0%
30 MHz to 500 MHz
(E9304A: 9 kHz to 500 MHz) ±1.8% ±3.0%
500 MHz to 1.2 GHz ±2.3% ±4.0%
1.2 GHz to 6 GHz ±1.8% ±2.1%
6 GHz to 14 GHz ±1.9% ±2.3%
14 GHz to 18 GHz ± 2.2 % ±3.3%