AUTO position matches the rate of the PZ position at low counting rates, but increases the restoration rate as the counting rate rises. HIGH rate position is provided for suppressing low frequency interference. Identical to NORM input. DIFF REF Front-panel BNC connector is used for the preamplifier ground reference connection when operating in the differential input mode. Positive NIM standard logic pulses or TTL levels can be used.
Logic is selectable as active high or active low via a printed circuit board jumper.
The PUR and BUSY logic pulses are used to prevent analysis and correct for the reset dead time in the associated ADC or multichannel analyzer. Output impedance is 50 W . Useful for dead-time corrections with an associated ADC or multichannel analyzer. Positive NIM standard logic pulse is selectable as active high or active low via a printed circuit board jumper. Output impedance is 50 W .