Table of Contents
Advertisement
Document type:
Title:
User's Manual (MUT)
Mod. V895 16 Channel Leading Edge Discriminator
Operating Modes
4.
4.1. Test, Veto and Or signals
Some operations can be performed sending two external NIM signals:
•
TEST: an input signal sent through this connector triggers all the enabled
channels at once. This feature allows to check the module as well as to generate
a pattern of pulses suitable to test any following electronics.
•
VETO: (see Fig.2.1) an input signal sent through this connector allows to inhibit
all channels simultaneously. Its leading edge must precede the input signal
leading edge by at least 8 ns and overlap completely the input signal. It doesn't
act on TEST input
Note: TEST and VETO are high impedance inputs and each one is provided
with two bridged connectors for daisy chaining (the chain has to be terminated
on 50 Ohm on the last module)
•
An OR output connector provides also the logical OR of the output channels. The
relevant "OR" LED lights up if at least one of the enabled channels is over threshold.
4.2. Channel test
It is possible to test all channels in the following ways:
•
sending a NIM pulse through one of the two "TEST" connectors located on the
front panel.
•
performing a write access to the + %4C base address (see § 3.8).
NPO:
00101/97:V895x.MUTx/03
Filename:
v895_rev3.doc
Revision date:
Revision:
19/03/09
3
Number of pages:
25
Page:
20
Advertisement
Table of Contents
