User's Manual

For assistance, call RITRON at 800-872-1872, or go to www.ritron.com
6
QUICK TALK
TM
PROGRAMMABLE FEATURES.................................................................................................................................
Input Type
Each input can be programmed for one of the three (3) basic types
of Input operation.
Contact Closure – Is used when a switch closure is connected
to the input.
Analog Input – Voltages above the High Analog Setpoint cause
the Input OPEN message to transmit. The hysteresis voltage
determines how much below the High Analog Setpoint the
voltage must drop before it is no longer considered in the OPEN
condition. Voltages below the Low Analog Setpoint cause the
Input CLOSED message to transmit, with the hysteresis voltage
determining how much above the Low Analog Setpoint the
voltage must rise before it is no longer considered in the
CLOSED condition. If the input is within the middle “dead zone”
no message will be sent.
FIG-3: Example of Analog Input Type
Terminated Alarm Input - This mode is useful in security alarm
applications, where the “Secure” (Good) condition is a range of
voltages. Any voltage above or below this range represents an
“Alarm” (Bad) condition.
The “Secure” condition is the range of voltage between the High
and Low Analog Setpoints. The input OPEN message is
activated in this range. Voltage above High Analog Setpoint, or
below Low Analog Setpoint activates the input CLOSED
message. Once the input is in the “Alarm” condition, the
hysteresis voltage determines how much below the High Analog
Setpoint or above the Low Analog Setpoint the voltage must go
before it is no longer considered in the CLOSED condition.
FIG-4: Example of Terminated Alarm Input Type
Analog Setpoints - The HIGH and LOW analog
setpoints are used with Analog Input mode or
Terminated Alarm Input mode, and can be programmed
to any DC voltage between 0-5 VDC. The Hysteresis
voltage is an offset applied to the HIGH and LOW Analog
Setpoints once they have been exceeded. Analog
Setpoints have no effect when the Input is set to Contact
Closure mode.
Latching
Use the Quick Talk
TM
Latching Input mode if repeated
transmissions are desired with a momentary switch (i.e. a
push-button). The latching effect maintains message
repeats after the momentary switch change has ended.
Latching can only apply to one input condition, open or
closed.
Example: To use a Quick Talk
TM
in a paint department,
you want it to re-transmit an “Assistance Needed” message
several times after a “Press for Help” push-button is
pressed. With the Quick Talk
TM
set to Latching Input mode,
release of the push-button is ignored and the message is
re-transmitted as scheduled.
Press and Hold Reset - With the Quick Talk
TM
programmed for latching mode operation it’s often
desirable to repeat the “Assistance message” without
limitation until the call has been answered. With Press
and Hold Reset enabled the push button can be held
down for 5 seconds to reset the Quick Talk
TM
to the
standby condition.
Example: To use a Quick Talk
TM
in a paint department,
you want it to re-transmit a message several times after a
“Press for Help” push-button is pressed. With the Quick
Talk
TM
set for Press and Hold Reset an employee can
terminate the message transmissions, and in the process
send a “Call answered” message.
ANI
The Input Open and Input Closed conditions can each be
programmed with a unique 1-9 digit DTMF or 3-7 digit
Selcall ANI string. The ANI will be transmitted immediately
prior to the Alert Tone and Input message. To program an
ANI string, select Selcall or DTMF and enter the string in
the value field.
Input Operation
Normal – operation transmits a message each time a
changed condition is detected.
Dwell Mode - is an option specifying that the switch must
remain in it’s changed condition for the programmed
dwell time before generating a message for the changed
condition.
Example: A sensor is used to detect a car in a “No
Parking” zone. Since it is undesirable for a message to
be generated by normal traffic through the “No Parking”
zone, a five-minute Dwell is used. Only if the sensor is
activated for a full five minutes will the “car illegally
parked” message be transmitted.