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27.
Basic Performance Test
(2650A/2651/2652A/2658A)
To keep the quality of the unit, regular performance testing is recommended. This section describes a method and
specification of basic performance testing. If a problem is found in the results of basic performance testing, or formal
testing is required,please contact B&K Precision.
27.1 Frequency Characteristics
Adjust the output level of the spectrum analyzer calibration unit (thereafter, “calibration unit”) so that the displayed
power value is -15dBm at each frequency for this unit, and measure the absolute value with a receiver for
calibration (microwave power meter, etc.).
Setting of 2650A/2652A/2651/2658A
Specifications
Measurement
value
Judgment
Center frequency
Frequency span
RBW *1)
50 kHz
200 kHz
10 kHz
Within Reference±2.6 dB±1dot
100 kHz
200 kHz
30 kHz
Within Reference±2.6 dB±1dot
1 MHz
2 MHz
100 kHz
Within Reference±2.6 dB±1dot
10 MHz
10 MHz
3 MHz
Within Reference±2.0 dB±1dot
100 MHz
10 MHz
3 MHz
Reference
1 GHz
10 MHz
3 MHz
Within Reference±1.0 dB±1dot
2 GHz
10 MHz
3 MHz
Within Reference±1.0 dB±1dot
3.3 GHz
10 MHz
3 MHz
Within Reference±1.0 dB±1dot
6.2 GHz *2)
10 MHz
3 MHz
Within Reference±1.0 dB±1dot
8.5 GHz *2)
10 MHz
3 MHz
Within Reference±1.0 dB±1dot
*1) RBW switching error is included at RBW other than 3 MHz. *2) 2658A only
· Setting of 2650A/2652A/2651/2658A
· Setting of calibration unit
Reference level
:
-15 dBm
Frequency
:
Same as a center frequency of
VBW
:
1 MHz
2650A/2652A/2651/2658A.
Sweep time
:
1 s
Detection mode
:
SMPL
Output power
:
Adjust the power indication of
2650A/2652A/2651/2658A to -15
dBm.
Display scale
:
2 dB/div
Spectrum analyzer calibration unit
Receiver for calibration
2650A/2651 series
[Connection diagram]
