B&K Precision 2658A - Manual - Manual (Page 52)

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[Specifications of dipole antenna (The antenna gain and VSWR are specified at the center of frequency range.)]
* When M405 is used, the measurement errors will occur due to how to hold of instrument and influence of
human body, because M405 is ¼
λ whip antenna. The error value will be several dB or more. In order to
reduce the error, separate 2650A series from human body as much as possible.
• Mode Selection and Measurement
By pushing (ANT), the antenna (M401/M402/M403/M404/M405/M406/USER) can be selected
The measurement starts as soon as the antenna is selected.
Items M401 M402 M403 M404 M405 M406
Type Sleeve Sleeve Sleeve Sleeve ¼
λ whip
Sleeve
Frequency range 0.8 to 1GHz 1.25 to 1.65GHz 1.7 to 2.2GHz 2.25 to 2.65GHz 300 to 500MHz 4.7 to 6.2GHz
Antenna gain >1dB >1dB >1dB >1dB >1dB >1dB
VSWR < 1.5 < 1.5 < 1.5 < 1.5 < 1.5 < 1.5
Dimensions
7.5φ ×280mm 7.5φ ×280mm 7.5φ ×210mm 7.5φ ×210mm 8.0φ ×212mm 7.5φ ×152mm
Weight Approx. 58g Approx. 60g Approx. 58g Approx. 56g Approx. 62g Approx. 54g
Reference level
setting range
(except for the
minimum value in
screen shift)
93 to 143
dBμV/m
96 to 146
dBμV/m
99 to 149
dBμV/m
100 to 150
dBμV/m
87 to 137
dBμV/m
109 to 159
dBμV/m
2650A series
* Turn the back to the signal source.
Connect to
RF INPUT.
Antenna
M401
M402
M403
M404
M405
M406
[Antenna connection] [Measurement environment]
F1