ice:servo-opl1
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ice:servo-opl1 [2020/09/25 16:18] – [Specifications] Michael Radunsky | ice:servo-opl1 [2021/08/26 15:26] (current) – external edit 127.0.0.1 | ||
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Two numbers control the offset frequency of the ICE-OPL1: The divider setting N and the reference frequency. The divider setting N can be set to N=8,16,32 or 64. The reference frequency can be generated internally with a range from 50 - 240 MHz. A sequence of frequencies and frequency ramps can be programmed using OPL1's DDS Queue. Alternatively, | Two numbers control the offset frequency of the ICE-OPL1: The divider setting N and the reference frequency. The divider setting N can be set to N=8,16,32 or 64. The reference frequency can be generated internally with a range from 50 - 240 MHz. A sequence of frequencies and frequency ramps can be programmed using OPL1's DDS Queue. Alternatively, | ||
- | <WRAP center round box 450px>< | + | <WRAP center round box 450px> ** Offset = N * Reference Frequency **</ |
The table below shows the offset range for different values of N and using the internal or external frequency reference. | The table below shows the offset range for different values of N and using the internal or external frequency reference. | ||
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The phase-noise specified in Section 1.3 is referenced to the phase frequency detector (PFD) at 1 Hz. To convert that to the noise measured on the actual beat-note, it must be rescaled with the following formula: | The phase-noise specified in Section 1.3 is referenced to the phase frequency detector (PFD) at 1 Hz. To convert that to the noise measured on the actual beat-note, it must be rescaled with the following formula: | ||
- | <WRAP center round box 450px>< | + | <WRAP center round box 450px> **D2-135 Phase-Noise Floor = -213 + 20Log(N) + 10Log(F< |
where N is the value of the divider and F< | where N is the value of the divider and F< |
ice/servo-opl1.1601050739.txt.gz · Last modified: 2021/08/26 14:26 (external edit)