Specifications for Analog Modulation
Frequency bands |
| Band | Frequency range | N number |
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| 1 | 250 kHz to ≤ 250 MHz | 1 |
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| 2 | > 250 MHz to ≤ 500 MHz | 0.5 |
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| 3 | > 500 MHz to ≤ 1GHz | 1 |
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| 4 | > 1 to ≤ 2 GHz | 2 |
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| 5 | > 2 to ≤ 4 GHz | 4 |
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| 6 | > 4 to ≤ 6 GHz | 8 |
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Frequency modulation 1 , 2 | Maximum deviation | 3 |
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| Standard | With Option UNJ | |
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| N x 8 MHz | N x 1 MHz |
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| Resolution |
| 0.1% of deviation or 1 Hz, |
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| whichever is greater |
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| Modulation frequency rate 4 [deviation = 100 kHz] |
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| Coupling |
| 1 dB bandwidth | 3 dB bandwidth | |
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| FM path 1[DC] |
| DC to 100 kHz | (DC to 10 MHz) | |
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| FM path 2 [DC] |
| DC to 100 kHz | (DC to 0.9 MHz) | |
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| FM path 1 [AC] |
| 20 Hz to 100 kHz | (5 Hz to 10 MHz) | |
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| FM path 2 [AC] |
| 20 Hz to 100 kHz | (5 Hz to 0.9 MHz) | |
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| Deviation accuracy 3 [1 kHz rate, deviation < N x 100 kHz] | |||||
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| < ± 3.5% of FM deviation + 20 Hz | ||
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| Carrier frequency accuracy relative to CW in DCFM3, 5 | |||||
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| ±0.1% of set deviation + (N x 1 Hz) | ||
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| Distortion 3 [1 kHz rate, dev.= N x 100 kHz] |
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| < 1% |
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| FM using external inputs 1 or 2 |
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| Sensitivity |
| 1 Vpeak for indicated deviation | ||
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| Input impedance | 50 Ω, nominal |
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FM path 1 and FM path 2 are summed internally for composite modulation. The FM 2 path is limited to a maximum rate of 1 MHz. The FM 2 path must be set to a deviation less than FM 1 path.
1.All analog performance above 4 GHz is typical.
2.For
3.Refer to frequency bands on this page to compute specifications.
4.Parentheses denote typical performance.
5.At the calibrated deviation and carrier frequency, within 5 °C of ambient temperature at time of calibration.
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