SECTION 6 PERFORMANCE TESTS
6-33
Frequency response
Generally, when one or more signals with a different frequency but the same amplitude are input, the spectrum
analyzer displays the same amplitude for each spectrum on the screen.
(1) Specifications
Relative flatness:
• MS2665C: ±1.5 dB (9 kHz to 3.2 GHz, band 0)
±1.0 dB (100 kHz to 3.2 GHz, band 0)
±1.5 dB (2.92 to 8.1 GHz, band 1–/1+)
±3.0 dB (8.0 to 15.2 GHz, band 2+)
±4.0 dB (15.1 to 21.2 GHz, band 3+)
• MS2667C: ±1.5 dB (9 kHz to 3.2 GHz, band 0)
±1.0 dB (100 kHz to 3.2 GHz, band 0)
±1.5 dB (2.92 to 8.1 GHz, band 1–/1+)
±3.0 dB (8.0 to 15.2 GHz, band 2+)
±4.0 dB (15.1 to 21.2 GHz, band 3+)
±4.0 dB (22.3 to 30 GHz, band 4+)
• MS2668C: ±1.5 dB (9 kHz to 3.2 GHz, band 0)
±1.0 dB (100 kHz to 3.2 GHz, band 0)
±1.5 dB (3.1 to 8.1 GHz,band 1–/1+ (n=1))
±3.0 dB (7.9 to 14.3 GHz,band 1+ (n=2))
±4.0 dB (14.1 to 26.5 GHz,band 2– (n=4))
±4.0 dB (26.2 to 40 GHz,band 3– (n=6))
* RF ATT=10 dB, at band 1, 2, 3, 4, after tuning the pre-selector, referenced to the midpoint between
highest and lowest frequency deviation in each band.
Absolute flatness:
• MS2665C: ± 5.0 dB (9 kHz to 21.2 GHz)
• MS2667C: ± 5.0 dB (9 kHz to 30.0 GHz)
• MS2668C: ± 5.0 dB (9 kHz to 40 GHz)
* Referenced to 100 MHz, RF ATT=10 dB, at band 1,2,3,4, after tuning the pre-selector.
(2) Test instruments
• Signal generator: 69269A
• Power meter: ML2437A
• Power sensor: MA2424A
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