SLIDAS an S-LINK Infinite Data Source

Errors on the PCB and modifications to be made

ECP 680-1110-500

• Serigraphy
• The labels J1, J2 and J3 are hidden under the connectors themselves. Move the text "SLIDAS ... http" upwards a little bit. Shrink the font to fit between LEDs and J5.
• Move C7 away from SW3's serigraphy.
• Positions 8 & 9 of SW4 to be 1 Hz and 0.5 Hz.
• SW5 to SW9: smaller text.
• LDOWN: UP/DOWN instead of ENABLE/DISABLE.
• The text "ERROR" should be above SW5 - SW7.
• Mark pin 1 on J1-J3, Altera side.
• Remove texts "J4" and "1" of the S-LINK connector, on push button side.
• The units on switch SW3 should be Words and KWords (instead of Bytes and KBytes).
• Change the frequencies on SW4 (to 40, 20, 10... MHz).
• Serigraphy of LM1 should be on same side as the Altera.
• The sign '+' of C1 should be away from the serigraphy for SW4.
• "Test mode" instead of "test pattern" on SW1.
• Placement of components
• A pin of SW10 is disturbing C12.
• Others
• The component DIGITAST_LED maps incorrectly the schematics symbol to the layout symbol. (To fix: resolder one end of R90).
• Make LEMO line to be 50 Ohm. Change values of resistors R1 & R2 to 50 Ohm each. Do not populate R2.
• Improve connection of decoupling capacitors to VCC and GND.
• Change type of decoupling capacitors to non-polarised.

CERN - High Speed Interconnect - S-LINK
Philippe Brodier-Yourstone - 11 March 1997 - Copyright