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
*Othercalibrationfrequenciesavailableuponrequest
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
*
*Allvalues2
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
Fora3.5‐digitdisplay,worstcaseisat300W.Leastsignificantdigitis
one watt, uncertainty is ± 1W out of 300 or 0.34%. For a 4.5‐digit
display,
leastsignificantdigitis0.1W,sotheuncertaintyis0.034%
± 0.06%
± 0.34%
± 0.06%
± 0.34%
Other sources of error ± 0.4% ± 0.5%
Best Case RSS Uncertainty ± 1.0% ± 1.0%
