User manual
Windows Server Program
ComTec GmbH 5-7
The Aux conn... button opens the Auxiliary Connectors dialog to define the use of the auxiliary
connectors. The AUX1 and AUX2 connectors both can be used either as an input or an output. In
input mode Coincidence Mode must be checked to get it into the 'coinc. with any' list. Start
Coincidence can be checked to allow starting a coincidence resolving time window from the
input connector. The Polarity of the TTL signal can be set by checking or unchecking Pol. active
low. For use as an output, check Enable Output and choose any of the signals from the drop
down list.
Available output signals are:
coinc_start indicates the start (opening) of a coincidence resolving time window
coinc_run active while a coincidence resolving time window is open
coinc_active active while a coincidence event is processed
(coincidence resolving time + processing time)
dead_store requests the sampling of the DEADTIME (LIVETIME) state of the ADC
ports – active every one millisecond when MPA-3 is enabled (enca is
true)
enca enable converter all – internal enable MPA-3 system signal
'1' outputs a HIGH
'0' outputs a LOW
GO mirrors the GO line (note: open drain output)
For systems with the Timestamp Real time clock option (RTC), the AUX2 connector has in
addition the following two output signals:
preset_reached indicates the Preset reached condition (only when 'Halt when preset
reached' is enabled in the RTC dialog)
timer_load indicates that the timer was reset to the start value.
Particularly the GO signal may be useful to monitor directly whether an acquisition is running or
not. The REJECT Input connector can be used similar to the AUX inputs. Check Coincidence
Mode to have /REJ in the 'Coinc. with any' list. A signal to the Reject input then drops any
coincidence event in the corresponding coincidence group, either Instantly or At End of
Coincidence window.
Figure 5.9: Auxiliary Connectors dialog box