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--- ice:servo-opls [2019/11/18 23:31] – [Calculating Phase Noise] Michael Radunsky
+++ ice:servo-opls [2021/05/20 22:40] – external edit 127.0.0.1
@@ Line 30: / Line 30: @@
 | Current range                                                                                                                                               |  0-200                                                                                           |  0-500        |  mA      |
 | Current setpoint resolution                                                                                                                                 |  200                                                                                             |  500          |  μA      |
-| Current noise density((All measurements guaranteed on design and verified experimentally on D2-105 which uses same circuit.))                               |  <100                                                                                            |  <200         | pA /√Hz  |
+| Current noise density                               |  <100                                                                                            |  <200         | pA /√Hz  |
-| RMS Noise (10Hz - 100kHz)((All measurements guaranteed on design and verified experimentally on D2-105 which uses same circuit.))                           |  <50                                                                                             |  <100         |  nA      |
+| RMS Noise (10Hz - 100kHz)              |  <50                                                                                             |  <100         |  nA      |
-| RMS Noise (10Hz - 1MHz)((All measurements guaranteed on design and verified experimentally on D2-105 which uses same circuit.))                             |  <100                                                                                            |  <150         |  nA      |
+| RMS Noise (10Hz - 1MHz)                  |  <100                                                                                            |  <150         |  nA      |
-| RMS Noise (10Hz - 10MHz)((All measurements guaranteed on design and verified experimentally on D2-105 which uses same circuit.))                            |  <300                                                                                            |  <500         |  nA      |
+| RMS Noise (10Hz - 10MHz)                |  <300                                                                                            |  <500         |  nA      |
 | Absolute accuracy                                                                                                                                           |  2                                                                                                              ||  %       |
 ^ Offset Phase Lock Servo Input Signal                                                                                                                        ^                                                                                                                 |^          ^
@@ Line 68: / Line 68: @@
 Two numbers control the offset frequency of the ICE-CP1: 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. Or 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 260px> **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 90: / Line 90: @@
-The charge pump in the OPLS outputs a signal proportional to the phase-error and the transfer function is as shown in <imgref xferfunc>.  However, the OPLS will typically be used to control a //frequency//-tunable device (such as a laser). In this configuration, the effective loop filter is not the one shown in <imgref opls_side_panel>, but includes a extra integration corresponding to converting the phase-error input to a frequency error. Thus, ω<sub>I  </sub>sets the frequency transition from single-integration to double-integration and ω<sub>I </sub> from single-integration to proportional feedback. It is important to understand this 'hidden' integrator when configuring the loop filter parameters.
+The charge pump in the OPLS outputs a signal proportional to the phase-error and the transfer function is as shown in <imgref xferfunc>.  However, the OPLS will typically be used to control a //frequency//-tunable device (such as a laser). In this configuration, the effective loop filter is not the one shown in <imgref xferfunc>, but includes a extra integration corresponding to converting the phase-error input to a frequency error. Thus, ω<sub>I  </sub>sets the frequency transition from single-integration to double-integration and ω<sub>I </sub> from single-integration to proportional feedback. It is important to understand this 'hidden' integrator when configuring the loop filter parameters.
 =====Calculating Phase Noise =====