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--- d2:laser_servo [2020/07/28 19:18] – [Back-panel Section] Michael Radunsky
+++ d2:laser_servo [2021/12/17 01:58] (current) – external edit 127.0.0.1
@@ Line 67: / Line 67: @@
 <WRAP center round box 600px>
 |                                                                                                  |  **Value**                                                                                                                         |  **Units**  |
-| **Input and Output Impedance**                                                                   |  50((~500 Ω input impedance for negative gain))                                                                                    |  Ω          |
+| **Input and Output Impedance**                                                                   |  50((In Peak Lock mode, the 50 Ω to ground is AC-coupled.  A measurement of the DC impedance will yield a higher value.))                                                                                    |  Ω          |
 | **Output Voltage (main and aux)**                                                                |  ±10                                                                                                                               |  V          |
 | **Input Voltage Noise**(( Referenced to 50Ω load))                                               |  <5                                                                                                                                |  nV/√Hz     |
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 {{ :d2:d-sub_power_pinout.jpg?nolink&150 |}}
+While it is infrequent, the D2-005 power supply may occasionally radiate noise from the side of its chassis onto nearby electronics. This only occurs in some system configurations, and will appear as a signal at the frequency of your mains electricity (typically either 50 Hz or 60 Hz). This noise can easily be removed by moving the D2-005 at least 18 inches (45cm) away from other electronics, rotating it 90° such that the sides of the D2-005 face away, or by moving the entire power supply to a different shelf. To accommodate this, all D2-005's are shipped with a 5' DB9 cable as of January 1, 2022.
 **Absolute Jump TTL (BNC)**