Progress Direct Systems Volt Tattler 2 Owner's Manual page 22

Using the variable voltage setup test each of the output signals as described in the following table.
L (LE)
GE (HE)
O (OOR)
M (Morse)
T (Tone)
OK_Pulse
Hi_Pulse
Low_Pulse
Hyst
V Between V Above High
Thresholds Threshold
Low Low
Low High
Low High
Low Keying Morse 'H' (....)
Sounding Morse 'H'
Low (....)
High-going High-going pulses if
pulses if voltage voltage is being
is being sampled sampled
Low unless there
has been a
previous high High-going pulses
voltage since last approximately once per
reset second.
Low unless there
has been a
previous low Low unless there has
voltage since last been a previous low
reset voltage since last reset
High or Low
depending on the High or Low depending
last threshold on the last threshold
crossed. crossed.
V Below Low
Threshold
High
Low
High
Keying Morse 'L'
*(.-..)
Sounding Morse 'L'
(.-..)
High-going pulses if
voltage is being
sampled
Low unless there has
been a previous high
voltage since last
reset
High-going pulses
approximately once
per second.
High or Low
depending on the last
threshold crossed.