User Guide
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886
/
Tel: (978) 692-7070
www.vertilon.com
Last Dynode Output
The last dynode of the H13700 is directly connected on the SIB71256 to a non-inverting preamplifier whose output is
available on an SMB connector. A miniature rotary switch allows the user to select between one of two gain settings. The
last dynode output is typically used with an external discriminator for generating a trigger signal to data acquisition
electronics or a time-to-digital converter (TDC) for determining time of arrival or coincidence detection. The figure below
shows the last dynode preamplifier response (in the high gain setting) to a voltage signal injected into the DY10 location
on the SIB71256.
Figure 6: Dynode Preamplifier Response
Gain Switches
The SIB71256 utilizes five miniature two-position switches to adjust the gain of the four anode preamplifiers and last
dynode preamplifier. The preamplifier gain can be set to either a low or high setting by using the included adjustment tool
to rotate the switches’ rotor. It is recommended that the user avoid turning the switches beyond the stops at the end of
each position. The figure below indicates the switch position for each gain.
Figure 7: Gain Switch Positions
Summary of Contents for SIB71256
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