ORTEC digiBASE-E, User Manual

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Figure 8. digiBASE-E Amplifier Tab.
3. USING THE DIGIBASE-E
3.1. digiBASE-E MCB Properties in MAESTRO
This section discusses the hardware setup dialog you will see within MAESTRO and other
C
ONNECTIONS
programs when you select the MCB Properties... command under the Acquire
menu. The digiBASE-E is completely software controlled; the MCB Properties dialog contains
all of the instrument controls including ADC setup parameters, acquisition presets, high voltage,
the gain and zero stabilizers, and amplifier gain adjustments. Just move from tab to tab and set
your hardware parameters, then click on Close. As you enter characters in the data-entry fields,
the characters will be underlined until you move to another field or until 5 seconds have lapsed
since a character was last entered. During the time the entry is underlined, no other program or
PC on the network can modify this value.
NOTE
The changes you make on most property tabs take place immediately. There is no
cancel or undo for this dialog.
3.1.1. Amplifier
Figure 8 shows the Amplifier tab.
This tab contains the controls for
Gain and Pile-up Rejection.
Set the amplifier coarse gain to 1×,
3×, or 9×, by setting the gain jumper
described in Appendix A, then adjust
the Fine gain with the horizontal slider
bar or the edit box, in the range of 0.33
to 1.0. Note that, while the coarse and
fine gain controls together cover an
amplification range of 0.33 to 9, only
the fine gain is shown at the top of the
Gain section on this property page.
NOTE
You must know the coarse-gain
jumper setting for your unit (the factory setting is 1×). You may wish to put a label on
the digiBASE-E housing indicating the current jumper setting.
Pile-up Rejection is used to reject overlapping pulses, improving the peak shape. This checkbox
allows you to disable the PUR. This feature is normally enabled and is only turned off for
special detectors.