# Regular Meeting (2022.9.26)

* Append Measurment I owed you
* Report I've arranged
* [Circuit/Board/Sim](https://hackmd.io/@BelleII-CDC-Trig-NTU-DeWei/r1Fs3fkxj)
* G = 2 or G = 4
* [Measurement](https://hackmd.io/@BelleII-CDC-Trig-NTU-DeWei/HJtU2AUes)
* Finished Chassis and other final clean in this week

## Owed test: Add Huge Capacitor(470uF)\*2 on PSU

* Input Signal: 0.1Vpp @ 1MHz
* OPA2674(Ext Resistor)
* 
* And Zoom In Rising edge
* 
* Overshoot seens to be fine
* Ripple of noise: 4m Vpp or 2.8m Vrms
* OPA3692(Fixed/Internal Resistor)
* 
* And Zoom In Rising edge
* 
* Overshoot: 8m Vpp (Be expected in the Simulation)
* Ripple of noise: 4m Vpp or 0.2m Vrms
* [Vpp -> Rms](https://www.apogeeweb.net/tools/rms-voltage-calculator.html)
* Assume noise ripple is sinusoid wave
* Dr.Wang mentioned 1mV noise, which is Vrms

###### tags: `Regular Meeting` `DeWei`