N1914A Datasheet, PDF (13/28 Pages) Keysight Technologies – EPM Series Power Meters E-Series and 8480 Series Power Sensors

13 | Keysight | N1913A and N1914A EPM Series Power Meters / E-Series and 8480 Series Power Sensors - Data Sheet
E-Series CW Power Sensor Specifications (continued)
Calibration factor (CF) and
reflection coefficient (Rho)
Calibration factor and reflection coefficient
data are provided at 1 GHz increments
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 data sheet with
the serial number on the power sensor you
are using. The CF corrects for the frequency
response of the sensor. The EPM power
meter automatically reads the CF data
stored in the sensor and uses it to make
the corrections. For power levels greater
than 0 dBm, add 0.5%/dB to the calibration
factor uncertainty specification.
Reflection coefficient (Rho) relates to the
SWR according to the following formula:
SWR = 1 + Rho/1 – Rho.
Table 5a. E4412A calibration factor uncertainty at
1 mW (0 dBm)
Frequency
Uncertainty*(%)
10 MHz
1.8
30 MHz
1.8
50 MHz
Reference
100 MHz
1.8
1.0 GHz
1.8
2.0 GHz
2.4
4.0 GHz
2.4
6.0 GHz
2.4
8.0 GHz
2.4
10.0 GHz
2.4
11.0 GHz
2.4
12.0 GHz
2.4
14.0 GHz
2.4
16.0 GHz
2.6
18.0 GHz
2.6
Maximum uncertainties of the CF data are
listed in Table 5a, for the E4412A power
sensor, and Table 5b for the E4413A power
sensor. The uncertainty analysis for the
calibration of the sensors was done in
accordance with the ISO/TAG4 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 5b. E4413A calibration factor uncertainty at
1 mW (0 dBm)
Frequency
Uncertainty*(%)
50 MHz
Reference
100 MHz
1.8
1.0 GHz
1.8
2.0 GHz
2.4
4.0 GHz
2.4
6.0 GHz
2.4
8.0 GHz
2.4
10.0 GHz
2.6
11.0 GHz
2.6
12.0 GHz
2.8
14.0 GHz
2.8
16.0 GHz
2.8
17.0 GHz
2.8
18.0 GHz
2.8
20.0 GHz
3.0
24.0 GHz
3.0
26.0 GHz
3.0
28.0 GHz
3.0