- cntr/README, ecn/INDEX, ecn/ecn0006.txt: moved discussion of the input
circuit from README to ECN0006
- cntr/cntr.sch: changed pointer from README to ECN0006
- ecn/ecn0006.txt: added more measurements, explanations, and an analysis
of the situation
- cntr/cntr.pro, cntr/cntr.brd: reduced PCB edge line width from 15 mil to
5 mil
- cntr/cntr.brd: make edge follow hole for MMCX connector
- cntr/cntr.brd: fill bottom and input area with ground
- cntr/cntr.sch, cntr/cntr.brd (R4): replace 0 Ohm jumper and GND via
P2.1 with vias
- cntr/cntr.pro: added usb_a_plug.lib, mmcx-f-edge.mod, usb_a_plug_smt.mod,
and sot-323.mod
- cntr/cntr.sch, cntr/cntr.brd: reassigned LED and pull GPIO for easier
routing
- cntr/cntr.sch, cntr/cntr.brd: replaced mini-USB receptacle with USB A
plug and removed 0 Ohm resistor previously used for swapping D+/D-
- cntr/cntr.sch, cntr/cntr.brd: changed TVSs on USB from 200 pF 0603 to
100 pF 0402 type
- cntr/cntr.sch, cntr/cntr.brd: replaced basically unterminated 100 mil
header with properly terminated MMCX connector
- cntr/cntr.brd: reduced board width (nominally 15.8 mm) to USB connector
width (16 mm)
- modules/mmcx-f-edge.fpd: swap contacts for compatibility with "BNC"
symbol
- cntr/cntr.sch (VR1, VR2, VR3): reverted change to 0402, because this
would be too difficult to route with current board
- cntr/cntr.sch (VR1, VR2, VR3): change voltage from 5.6 V to 5.5 V,
for compatibility with selected part
- cntr/cntr.brd: updated for value change
- cntr/cntr.sch: LED part number is LTST-C190KRKT, not LTST-C190KTKR
- cntr/cntr.sch: changed Vdc of VR4 from 5.6 V to 5.5 V (to match EPCOS
CT0603M4G
- cntr/cntr.sch: changed VR1 through VR3 to 0402 for lower capacitance
quite formidable low-pass filter that almost completely eliminated the
1 MHz signal.
- cntr/cntr.sch, cntr/cntr.brd: changed R1 from 100k to 1k to increase
input bandwidth
