Performance Verification
Giga-tronics 2500B Series Microwave Signal Generators
Page 90
Operation Manual, Part Number 34737, Rev C, June 30, 2011
Table 41: Spectral Purity
Spectral Purity
Harmonics
Maximum leveled output power or +10 dBm, whichever is lower. Specifications
for harmonics above instrument frequency range are nominal.
100 kHz to 10 MHz
-30 dBc
> 10 MHz to 100 MHz
-40 dBc
> 100 MHz to 39.6 GHz
1
-50 dBc
> 39.6 to 50 GHz
-30 dBc nominal
Sub-Harmonics
Maximum leveled output power or +10 dBm, whichever is lower. Specifications
for Sub-harmonics above instrument frequency range are nominal.
100 kHz to 2 GHz
-80 dBc
> 2 to 20.2 GHz
-60 dBc
> 20.2 to 50 GHz
-40 dBc
Spurious
Specifications are for offsets > 300 Hz. Specification is -45 dBc + 20 log(1/N)
dBc nominal for offsets < 300 Hz.
100 kHz to 10.1 GHz
-65 dBc
> 10.1 to 20.2 GHz
-58 dBc
> 20.2 to 39.6 GHz
-50 dBc
> 39.6 to 50 GHz
-40 dBc
Residual FM (typical)
50 Hz to 15 kHz Bandwidth
100 kHz to 20.2 GHz
< 6 Hz
> 20.2 to 39.6 GHz
2
< 12 Hz
> 39.6 to 50 GHz
< 18 Hz
AM Noise (typical)
Offset > 5 MHz at maximum leveled power. Applies in CW only.
100 kHz to 2 GHz
-130 dBm/Hz
> 2 to 20.2 GHz
-145 dBm/Hz
> 20.2 to 50 GHz
-132 dBm/Hz
1, 2
Specification for model 2540B extends to 40 GHz
