Hardware
Description
ComTec GmbH
2-4
SCA: TTL outputs in PHA mode (TTL pulses of approx. 0.5 µs duration. One output pulse for
each input signal that falls between the ULD and LLD thresholds.
Outputs the analog TAC signals in TDC mode. The amplitude of the output signal is proportional
to the time.
REMARK
:
This output is not for spectroscopy use. It is just an indicator for the experimental setup.
Outputs the set levels in adjustment mode for control via e.g. a digital voltmeter.
2.2.3. Controls
Device control is performed using five buttons and two 3-position switches.
The 4 main buttons (yellow) on the front panel are used to control the device parameters.These
buttons are Up/Down for each of the channels. There is also a Mode button, used to switch
between Normal operation mode and different Adjust modes. To prevent accidental changes this
button is hidden and accessible with a small screw driver, pencil etc. through a hole in the front
panel.
Two switches define the functionality of each channel - TDC, SVA, PHA.
2.2.4. Indicators
Two 10-LED bars are used as Dead time / Level indicators. In normal operation mode these LED-
bars indicate the dead time in %. In different adjustment modes the LED-bars give a rough
indication of the currently adjusted parameter in % of the maximum value. There is no sign. The
real value can be measured with a voltmeter at the front panel output.
Two additional sets of LEDs indicate the adjusted parameter (if Adj LED is lit) or currently
selected range of operation in normal mode.
