Differences

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--- ice:servo-opl1 [2020/09/25 16:18] – [Specifications] Michael Radunsky
+++ ice:servo-opl1 [2020/09/25 16:21] – [Calculating Phase Noise] Michael Radunsky
@@ Line 68: / Line 68: @@
 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, an external frequency reference can be provided (external frequency must be from 32 MHz - 240 MHz). The offset frequency of the laser is given by the following formula:
-<WRAP center round box 450px><html><center></html> ** Offset = N * Reference Frequency **<html></center></html></WRAP>
+<WRAP center round box 450px> ** Offset = N * Reference Frequency **</WRAP>
 The table below shows the offset range for different values of N and using the internal or external frequency reference.
@@ Line 201: / Line 201: @@
 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><html><center></html> **D2-135 Phase-Noise Floor = -213 + 20Log(N) + 10Log(F<sub>REF</sub>)**<html></center></html></WRAP>
+<WRAP center round box 450px> **D2-135 Phase-Noise Floor = -213 + 20Log(N) + 10Log(F<sub>REF</sub>)**</WRAP>
 where N is the value of the divider and F<sub>REF</sub> is the reference frequency as measured in Hz. For more details, please see [[http://www.vescent.com/2012/calculating-phase-noise-from-the-d2-135/|http://www.vescent.com/2012/calculating-phase-noise-from-the-d2-135/]] .