Bird Technologies SCC7 Series-Manual - Manual (Page 40)

26
Bird 4027F Series RF Power Sensors
Uncertainty Budget 4027F Series
Frequency Range
4027F2M
4027F10M
4027F60M 1.8 – 2.2 MHz
12 – 15 MHz
57 – 63 MHz
RF Power Range
4027F2M, 4027F10M
4027F60M 0.1 – 10 kW
0.1 – 3 kW
Accuracy, Fwd, Best Case ± 1.0% (2

)
Calibration Frequencies, Typical
*
4027F2M
4027F10M
4027F60M
* Other calibration frequencies available upon request
1.8, 2.0, 2.17 MHz
12.0, 12.5, 13.56, 14.0, 15.0 MHz
57.0, 58.5, 60.0, 61.5, 63.0 MHz
Calibration Power, Typical 1.7 kW
Harmonic Rejection, Min.
4027F2M
4027F10M
4027F60M 26 dB @ 3.6 – 3.8 MHz, 30 dB @ > 3.8 MHz
30 dB @ > 25 MHz
30 dB @ > 114 MHz
Low Frequency Rejection, Min.
4027F2M
4027F60M 30 dB @ < 1 MHz
30 dB @ < 15 MHz
Max Error Induced by 10% AM
4027F2M, 4027F10M
4027F60M 0.2% @ < 5 kW, 1.0% @ 5 – 10 kW
0.2% @ < 1.5 kW, 1.0% @ 1.5 – 3 kW
VSWR, Max. 1.05:1
Insertion Loss, Max. 0.05 dB (with female “N” connectors)
Directivity, Min. 28 dB
Uncertainty
*
* All values 2

4027F2M 4027F10M
Frequency Error...
at cal freq
not at cal freq ± 0.1%
± 0.5% ± 0.1%
± 1.5%
Power Linearity...
at cal power
not at cal power ± 0.1%
± 1.0% ± 0.1%
± 0.5%
Temperature Uncert...
within 20 to 30°C
outside 20 to 30°C ± 0.65%
± 3.2%
± 0.6%
–3.0, +0.75%
Calibration Uncertainty ± 0.6% ± 0.6%
Resolution Uncert...
at cal power
not at cal power
†
† Resolution uncertainty is error due to limited display digits. Actual
uncertainty can be calculated as ± (1 in least significant digit) /
Reading
For a 3.5‐digit display, worst case is at 300W. Least significant digit is
one watt, uncertainty is ± 1W out of 300 or 0.34%. For a 4.5‐digit
display, least significant digit is 0.1W, so the uncertainty is 0.034%
± 0.06%
± 0.34% ± 0.06%
± 0.34%
Other sources of error ± 0.4% ± 0.5%
Best Case RSS Uncertainty ± 1.0% ± 1.0%