Uncertainties, Measurement system, Calibration source – Boonton 4240 RF Power Meter User Manual
Page 17: Uncertainties -7, Measurement system -7, Calibration source -7, Boonton 4240 series rf power meter, General information 1-7

Boonton 4240 Series RF Power Meter
Table 1-2
4240 Series Performance Specifications (continued)
pecifications a
NCERTAINTIES
easurement Accuracy
Sum of following uncertainties (errors are +
(S
re subject to change without notice)
U
M
worst case): instrument
uncertainty, noise/signal percentage, power reference uncertainty,
s
, temperature drift, mismatch, and frequency
c
Instrume
+
ensor shaping
alibration factors
nt Uncertainty
0.23% (+0.01 dB) at full scale; +0.46% (+0.02 dB) at 1/10 full scale
Noise/si
C
wer Sensor Manual, to percent
power level
.
Power Reference Uncertainty
R
nce: Level Accuracy
Sensor Shaping
+
gnal Percentage
onvert 2 sigma noise listed in the Po
of the applied
efer to Table 1-2 Power Refere
1.0% (+0.04 dB) typical, Power Sensor Manual
emperature Drift
R
MEASUREMENT SYSTEM
Sensor inputs:
One or two sensor measurement channels.
Measurement Technique:
24 bit Sigma-delta A/D converter per channel.
CALIBRATION SOURCE
Internal Calibrator
Operating Modes:
Off, On CW
Frequency:
50.025 MHz ± 0.1%
Level Range:
-60 to +20 dBm
Resolution: 0.1
dB
RF Connector:
Type N
Source VSWR:
1.05 (reflection coefficient = 0.024)
Accuracy, 0C to 20C, NIST traceable:
At 0 dBm: ±0.055 dB (1.27%)
+20 to -39 dBm: ±0.075 dB (1.74%)
-40 to -60 dBm: ±0.105 dB (2.45%)
Auto-calibration:
The Calibrator is used to automatically generate linearity calibration
data for CW power sensors. Can be used to provide test signals.
efer to Power Sensor Manual
T
General Information
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