49X Series Comparison
This page is an attempt to compare the 49X and 279X series spectrum analyzers that share many common hardware features. All data is for the base model without options.
| Parameter | 492 | 492A | 492BP | 492PGM | 494 | 494A | 495P | 496 | 497P | 2792 | 2794 | 2795 | 2797 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frequency Range | 50kHz - 21GHz | 10kHz - 21GHz | 10kHz - 21GHz | 10kHz - 21GHz | 10kHz - 21GHz | 10kHz - 21GHz | 100Hz − 1.8GHz | 1kHz − 1.8GHz | 100Hz − 7.1GHz | 10kHz - 21GHz | 10kHz - 21GHz | 100Hz − 1.8GHz | 100Hz − 7.1GHz |
| Min. Span | 100 kHz | 1kHz | 2 kHz | 500 Hz | 100 Hz | 100 Hz | 500 Hz | 1 kHz | 2 kHz | 100 Hz | 100 Hz | 100 Hz | |
| Max. Span | 5 GHz | 100 GHz | 10 GHz | 5 GHz | 100 GHz | 1 GHz | 1 GHz | 5 GHz | 12 GHz | 150 GHz | 1.7 GHz | 4 GHz | |
| Ext. Mix | Yes | Yes | Yes | No | Yes | Yes | No | No | No | Yes | Yes | No | No |
| Cent. Freq. Acc. | 1MHz | ±21kHz | ±30kHz | Freq.Ref. | ±20 kHz | ±20 kHz | 1MHz | ±21 kHz | ±30kHz | ±20kHz | ±20kHz | ±21kHz | |
| Freq. Ref. Acc. | 1×10-6/yr | 1×10-5/yr | 1×10-7/yr | 1×10-7/yr | 1×10-6/yr | ? | 1×10-9/yr | 1×10-9/yr | ? | ||||
| SSB Phase Noise | -105dBc/Hz | -103dBc/Hz | -90dBc/Hz | -105dBc/Hz | -105dBc/Hz | -105dBc/Hz | -103dBc/Hz | -105dBc/Hz | -105dBc/Hz | -105dBc/Hz | |||
| Min. Res. BW. | 1 kHz | 100 Hz | 1 kHz | 30 Hz | 10 Hz | 10 Hz | 30 Hz | 10 Hz | 1 kHz | 10 Hz | 10 Hz | 10 Hz | |
| Max. Res. BW. | 1 MHz | 3 MHz | 3 MHz | 1 MHz | 3 MHz | 3 MHz | 1 MHz | 3 MHz | 3 MHz | 3 MHz | 3 MHz | 3 MHz | |
| GPIB | P model | P model | yes | yes | P model | P model | Yes | P model | Yes | Yes | Yes | Yes | Yes |
| Marker | No | Yes | Yes | Yes | No | Yes | Yes | No | Yes | Yes | Yes | Yes | Yes |