Pixie-32 User Manual
Version 0.2
Appendix
Initialization file format
Typical name is p32.ini, but can be anything, the filename is provided as argument to the wx_pixie32.py
script. The file should contain at least 5 lines, without blank lines.
Description of .ini file format:
1.
firmware path (.bin file). Relative or absolute path.
2.
configuration file path and basename. Relative or absolute path. Configuration parameter file
names would be <basename>_m##.txt (## is module number).
3.
chassis ID (0--3)
4.
verbosity (0: only errors, 1: errors and boot messages, 3: errors, status, and detailed debug
messages)
5.
module serial numbers
The serial number entries must be on separate lines, and match the modules installed in the chassis.
Configuration file format
Filename should be in <Configuration_base_name>_m##.txt format (## is module number.), separate file
for each module, where <Configuration_base_name> is FipRegs by default, but can be anything.
Configuration file path and base name are given in the initialization file.
Description of FPGA parameters, their meaning, allowed ranges:
Polarity
:
Sets the polarity of input signal
= 1, input signal has positive polarity
= 0, input signal has negative polarity
DCOffset:
Sets the DC-offset voltage.
Valid value range is 0 to 16383
.
FastLength:
Sets the rise time of the trapezoidal trigger filter (regular).
Valid value range is 2
to 63
.
RiseTime (regular) = FastLength * 20 ns
There is a constraint concerning the sum value of the two trigger filter
parameters:
2 <= Fast FastGap <= 63
FastGap:
Sets the flat top of the trapezoidal trigger filter (regular).
Valid value range is 0 to
61
.
FlatTop (regular) = FastGap * 20 ns
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