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

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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

1-7

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