|
|
# 19 Mar 2020
|
|
|
# WhatsApp exchange of 19 Mar 2020
|
|
|
|
|
|
1. Both Schroff and Elma PSUs fit well
|
|
|
--> Great!! ACTION A11d: DONE!
|
|
|
1. Both Schroff and Elma PSUs fit well <br>
|
|
|
--> Great! ACTION A11d: DONE!
|
|
|
|
|
|
2. In next message I will send you design of front panel to accept. IDC connectors are both 16 pin there. As we talked 6-pin panel mount IDC connectors are no available, so maybe we can just use two 16 pin. <br>
|
|
|
--> OK! In the silkscreen of the crate-front-panel, please note:
|
|
|
--> OK for 2x16pin IDC! In the silkscreen of the crate-front-panel, please write:
|
|
|
- Switches: PSU1, PSU2
|
|
|
- BNC: RST-IN
|
|
|
- IDC top: AUX
|
|
|
- IDC bottom: FAN-TRAY
|
|
|
|
|
|
|
|
|
3. We have an idea about front panel PCB. Is it possible to make it 100mm in one of its dimensions? Then we can mount rails and just insert PCB behind the front panel. Additionally, we can use Schroff front handles on PCB to screw it to that panel (i. e. For transport purposes). With that solution we will be also able to use standard Schroff dividers
|
|
|
3. We have an idea about front panel PCB. Is it possible to make it 100mm in one of its dimensions? Then we can mount rails and just insert PCB behind the front panel. Additionally, we can use Schroff front handles on PCB to screw it to that panel (i. e. For transport purposes). With that solution we will be also able to use standard Schroff dividers <br>
|
|
|
--> Good idea! This requires a small change from Michal; currently the pcb is ~133x51mm; I will write to Michal to confirm the change wont compromise our current scheduling (delivery nxt Friday); it would also help if you were also in contact during the redesign for the best implementation (easily accessible cabling):)
|
|
|
|
|
|
4. Materials. Do you have some new information about prohibited materials? Especially small amount of PVC in i. e. Connectors. <br>
|
|
|
--> We have confirmed PVC in cable insulation. <br>
|
|
|
Do we know if the concentration of PVC in connectors is similar to the concentration on cable insulation? Which connectors are concerned?<br>
|
|
|
As you suggested I will now anyway ask about the allowed concentration of PVC; I'm sorry had not followed this up since our last mail.<br>
|
|
|
I'm also seeing now on your last mail, Jakub, you asked whether the mechanical design is focused on CERN internal use or easy-access crate; here I would say we first need to comply to all the safety rules (no option on that;) and then go for the most easy-access crate!
|
|
|
|
|
|
--> Good idea!
|
|
|
|
|
|
4. Materials. Do you have some new informations about prohibited materials? Especially small amount of PVC in i. e. Connectors.
|
|
|
# 18 Mar 2020
|
|
|
|
|
|
## Crate Front Panel
|
... | ... | |