Anritsu 681XXC - Manual (Page 232)

SINGLE-SIDEBAND PHASE NOISE (dBc/Hz)
POWER LINE and FAN ROTATION SPURIOUS EMISSIONS (dBc)
RESIDUAL FM (CW and Step Sweep modes, 50 Hz - 15 kHz BW)
RESIDUAL FM (Analog Sweep and Unlocked FM modes, 50 Hz - 15 kHz BW)
AM Noise Floor: Typically <–145 dBm/Hz at 0 dBm output and offsets >5 MHz from carrier.
681XXC OM B-3
PERFORMANCE
SPECIFICATIONS
Frequency Range Residual FM (Hz RMS)
10 MHz to £ 8.4 GHz <120
>8.4 GHz to £ 20 GHz <220
>20 GHz to £ 40 GHz <440
>40 GHz to £ 65 GHz <880
Frequency Range
Unlocked Narrow FM Mode
(kHz RMS)
Unlocked Wide FM Mode
(kHz RMS)
10 MHz to £ 20 GHz <5 <25
>20 GHz to £ 40 GHz <10 <50
>40 GHz to
£
65 GHz <20 <100
Frequency Range
Offset From Carrier
100 Hz 1 kHz 10 kHz 100 kHz
0.1 Hz to <10 MHz
(w/Option 22)
–90 –120 –130 –130
³
10 MHz to
£
2.0 GHz –77 –88 –86 –100
>2.0 GHz to £ 6.0 GHz –78 –88 –86 –102
>6.0 GHz to £ 10.0 GHz –73 –86 –83 –102
>10.0 GHz to £ 20.0 GHz –66 –78 –78 –100
>20.0 GHz to £ 40.0 GHz –60 –75 –72 –94
>40.0 GHz to £ 65.0 GHz –54 –69 –64 –88
Frequency Range
Offset From Carrier
<300 Hz 300Hz to 1 kHz >1 kHz
10 MHz to £ 8.4 GHz <–50 <–60 <–60
>8.4 GHz to £ 20 GHz <–46 <–56 <–60
>20 GHz to £ 40 GHz <–40 <–50 <–54
>40 GHz to £ 65 GHz <–34 <–44 <–48