User`s guide

153
Chapter 4 Features and Functions
Totalizer Operations
4
Totalizer Operations
The multifunction module has a 26-bit totalizer which can count TTL
pulses at a 100 kHz rate. You can manually read the totalizer count or
you can configure a scan to read the count.
• The totalizer channel is numbered “s03”, where s represents the slot
number.
• You can configure the instrument to count on the rising edge or
falling edge of the input signal.
• You can control when the totalizer actually records counts by
providing a gate signal
(G and terminals on the module). A TTL
high signal applied to the “G” terminal enables counting and a low
signal disables counting. A TTL low signal applied to the “ ”
terminal enables counting and a high signal disables counting. The
totalizer only counts when both terminals are enabled. You can use
either the G terminal, the terminal, or both. When a gate is not
connected, the gate terminal floats to the enabled state, effectively
creating a “gate always” condition.
G
G
G
Input Signal
(Rising Edge)
Gate Signal
Total izer I nput
(High True)
Add to Total
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