V2-1: suggestion to make output level switchable
The blocking level output is fixed at 24V [2, table 4].
Roger Barlow (CERN TE-ABT) suggested to build in a future version the option to make the blocking output level switchable as they use a 15V level. Likely settable via the dip switches.
- 24V (currently implemented)
Actually it may need to be other levels as 11, 18, 23, 24, 30 and 35V
have been used in boards at CERN .
The blocking level is set by a DC-DC converter that may use different voltages (check if may be lower than the 12V input used).
 Standard Blocking Output Signal Definition for CTDAH board
 User guide (table 4 shows signal levels)