Production history for TTL to blocking converter systems
Rationale
Because of various design changes, several production cycles for the various boards in the TTL to blocking converter system had to be performed.
This page lists these production cycles, for historical purposes.
Some clarification on the tables below:
- Date is the date when the EDH document was opened
- Qty is the quantity of boards produced
- EDH field contains links to the EDH document pertaining to the item in the table
Note that the order in the table below is based on a "natural" production order, i.e., design/change -> production -> assembly. The ordering in the table is not necessarily based on date.
Front module
V1-0
Date | Qty | EDH |
---|---|---|
24.04.2012 | 3 | link |
V2-0
- Design changed due to error on V1 board
Date | Qty | EDH |
---|---|---|
30.11.2012 | 4 | link |
V2-1
- Small changes in V2-0 design
- changed some resistor values to increase blocking output stage voltage
- configured some components in schematics as not mounted
Date | Qty | EDH |
---|---|---|
04.04.2013 | 25 | link (1) |
25.09.2013 | 100 | link |
Note (1): This order was for V2-0 boards, but assembled as per V2-1
Mechanics
- V1-0
- initial version
- V2-0
- some small serigraphy changes
- added holes for the bicolor LEDs on V2 boards
RTM
V1-0
Date | Qty | EDH |
---|---|---|
21.05.2012 | 3 | link |
07.12.2012 | 25 | link |
V2-0
- Design changed to remove some copper planes which we worried might generate crosstalk on the lines
Date | Qty | EDH |
---|---|---|
23.08.2013 | 4 | link |
V3-0
- Moved RTMP connector more to the inside of the board to solve a mechanical problem whereby the front panel was curved
Date | Qty | EDH |
---|---|---|
16.10.2013 | 100 | link |
Mechanics
- V1
- initial version
- V2
- added insulating bushings around the output connectors
RTMP
V1-0
Date | Qty | EDH |
---|---|---|
24.04.2012 | 3 | link |
03.04.2013 | 27 | link |
23.08.2013 | 6 | link |
09.10.2013 | 102 | link |
Theodor-Adrian Stana, Mar. 2014