d2:offset_phase_lock_servo
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d2:offset_phase_lock_servo [2019/11/19 18:26] – [Calculating Phase Noise] Michael Radunsky | d2:offset_phase_lock_servo [2021/04/26 22:19] – external edit 127.0.0.1 | ||
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The D2-135 comes in two different versions: | The D2-135 comes in two different versions: | ||
- | *// | + | *// |
*// | *// | ||
The D2-135-SMA requires an electrical signal input between 10 and -10 dBm of power. | The D2-135-SMA requires an electrical signal input between 10 and -10 dBm of power. | ||
- | The D2-135-FC-800 is no longer available, but information regarding it is retained for those users who have purchased this model. | + | The D2-135-FC-800 is no longer available, but information regarding it is retained for those users who have purchased this model. |
===== Absolute Maximum Ratings ===== | ===== Absolute Maximum Ratings ===== | ||
Note: All modules designed to be operated in laboratory environment | Note: All modules designed to be operated in laboratory environment | ||
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=====Modes===== | =====Modes===== | ||
- | The OPLS operates in 12 different modes, controlled by the front-panel knob or with external inputs to the back-panel. These 12 modes select the value of the divide-by-N (N=8,16,32, or 64) and select between three states for the reference frequency (external input, internal VCO High, internal VCO Low). The table below shows the offset frequency ranges for these 12 different modes. | + | The OPLS operates in 12 different modes, controlled by the front-panel knob or with external inputs to the back-panel. These 12 modes select the value of the divide-by-N (N=8, 16, 32, or 64) and select between three states for the reference frequency (external input, internal VCO High, internal VCO Low). The table below shows the offset frequency ranges for these 12 different modes. |
<WRAP center round box 70%> | <WRAP center round box 70%> | ||
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^ ^^ N=8 ^ N=16 ^ N=32 ^ N=64 ^ | ^ ^^ N=8 ^ N=16 ^ N=32 ^ N=64 ^ | ||
^ Reference \\ Frequency \\ Setting | ^ Reference \\ Frequency \\ Setting | ||
- | ^::: | + | ^::: |
^::: | ^::: | ||
^::: | ^::: | ||
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===Error Signal (AC)=== | ===Error Signal (AC)=== | ||
- | This is an unfiltered version of Error Signal (DC) that is four times smaller, and has a DC offset. | + | This is an unfiltered version of Error Signal (DC) that is four times smaller, and has a DC offset. |
===Ref Freq=== | ===Ref Freq=== | ||
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**Coarse Gain (eight-position switch)** | **Coarse Gain (eight-position switch)** | ||
- | The COARSE GAIN sets the overall proportional gain of the circuit without changing the location of any corners or poles in the loop filter transfer function. The coarse gain adjusts in steps of 6 dB from 0 dB to -42 dB. | + | The COARSE GAIN sets the overall proportional gain of the circuit without changing the location of any corners or poles in the loop filter transfer function. The coarse gain adjusts in steps of 6 dB from 0 dB to -76 dB. |
**Servo Output** | **Servo Output** | ||
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====Right Side Panel ==== | ====Right Side Panel ==== | ||
- | < | + | < |
The feedback loop is defined by the Gain vs. Frequency plot shown above. ƒ< | The feedback loop is defined by the Gain vs. Frequency plot shown above. ƒ< | ||
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**VCO Freq. Adjust** | **VCO Freq. Adjust** | ||
- | This input is summed in with the VCO TUNE potentiometer to set the voltage to the VCO, and thus the reference frequency when the OPLS is using the internal VCO. The impedance | + | This input is summed in with the VCO TUNE potentiometer to set the voltage to the VCO, and thus the reference frequency when the OPLS is using the internal VCO. The impedance |
=====Understanding Gain in the OPLS===== | =====Understanding Gain in the OPLS===== |
d2/offset_phase_lock_servo.txt · Last modified: 2023/11/16 00:02 by 127.0.0.1