specgather.md

@@ -109,6 +109,14 @@ Price idea:
   - 10 layer PCB so that layout can be optimised for low-jitter
     oscillator
 
+### Additional connectors
+
+  - High-speed connector for PPS in/out, 10MHz in, tx-abscal, rx-abscal,
+    refclock. 6 signals to be transferred in a differential way Samtec
+    Bulls-Eye connector (just a land pattern for 22 (?) signals on the
+    PCB).
+      - [Samtec Bull's eye connectors](http://www.samtec.com/BullsEye)
+
 ### Other remarks from NIKHEF
 
 Some extra's that were on our list:
@@ -128,6 +136,24 @@ Some extra's that were on our list:
     oscillator. Ideas are still vague at this moment but the interface
     as such should already be on the list.
 
+### Use cases
+
+#### NIKHEF
+
+  - Users will be first: research institutes, metrology institutes
+    later: high performance users, telecom, ....
+  - All users profit from an inherent high performance, relatively
+    cheap, design without the bother of buying an expensive stable
+    external oscillator.
+  - So this is why priority is 1) performance, 2) cost. 
+
+#### CERN
+
+  - Replacement for DIO, ADC100M, TDC, Fine Delay, WorldFIP master.
+  - Users will be CERN and most current SPEC users. 500 cards expected
+    in 7 years
+  - Priority 1) cost 2) performance
+
 -----
 
 ## Accepted
@@ -147,5 +173,5 @@ Some extra's that were on our list:
 
 -----
 
-15 January 2018
+16 January 2018