CMP 200 Aec Signals: Error 014, BUT Error
CMP 200 Aec Signals: Error 014, BUT Error
CMP 200 Aec Signals: Error 014, BUT Error
This plot shows the voltages on the test points on the Error 014, BUT Error
generator control board.
KV from Dynalyzer
KV from Dynalyzer
If AEC back up time errors happen
look for a PT Ramp signal like this.
PT Ramp signal on
AEC board PT Ramp signal on To fix this problem, lower the gain in
AEC board the ion chamber or pre-amp and then
raise the gain with the pot on the
PT Stop, TP 22, AEC board.
PT Stop, TP 22,
control board.
control board. When this happens the AEC board is
acting like an attenuator instead of an
PT 5, PTP 21, PT 5, PTP 21, amplifier.
control board control board
This plot shows the effect of the gain adjustment pot on the
ramp signal.
KV from Dynalyzer
PT Ramp signal on
AEC board
PT Stop, TP 22,
control board.
PT 5, PTP 21,
control board
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