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BIRD 4391A - Measuring Peak Envelope Power

BIRD 4391A
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Operating Instructions
10
Table 2 - Voltage Standing Wave Ratio (VSWR)
Measuring Peak Envelope Power
PEP power measurements are made in the same manner as CW power readings
described above, except that the FWD PEP and RFL PEP buttons are pressed and
the readings are displayed directly as peak power.
Note: The accuracy of measurements made with modulation hav-
ing a frequency, duty cycle, pulse width, or repetition rate outside
the instrument range cannot be assured in any mode of operation.
Figure 9 Peak Envelope Power (PEP)
VSWR
Return Loss
(dB)
Reflected
Power %
VSWR
Return
Loss (dB)
Reflected
Power %
1.01 46.1 0.00 1.45 14.7 3.37
1.02 40.1 0.01 1.50 14.0 4.00
1.03 36.6 0.02 1.75 11.3 7.44
1.04 34.2 0.04 2.00 9.50 11.11
1.05 32.3 0.06 2.25 8.30 14.79
1.06 30.7 0.08 2.50 7.40 18.37
1.07 29.4 0.11 2.75 6.60 21.78
1.08 28.3 0.15 3.00 6.00 25.00
1.09 27.3 0.19 3.25 5.50 28.03
1.10 26.4 0.23 3.50 5.10 30.86
1.15 23.1 0.49 3.75 4.70 33.52
1.20 20.8 0.83 4.00 4.40 36.00
1.25 19.1 1.23 4.25 4.20 38.32
1.30 17.7 1.70 4.50 3.90 40.50
1.35 16.5 2.22 4.75 3.70 42.53
1.40 15.6 2.78 5.00 3.50 44.44

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