Ritron QuickTalk RQT-150, Owner'S Manual

Page: 19 / 28

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Page 17
1. ANALOG INPUT MODE: Voltages above High Threshold
Setpoint cause Switch 1 OPEN message to transmit.
Voltages below Low Threshold Setpoint cause Switch 1
CLOSED message to transmit. The dead zone—an area of
hysteresis provided by the difference between High and Low
Threshold Setpoints—prevents unwanted messages,
caused by noise or minor signal changes. See Fig–9.
When the input is in CLOSED condition, a change to OPEN
condition occurs only when the signal exceeds the High
Threshold Setpoint. Similarly, when the input is in OPEN
condition, the change to CLOSED condition occurs only
when the signal is less than the Low Threshold Setpoint.
To Set Analog Input Mode:
a. Pick up the telephone receiver and listen for the
acknowledge tone.
b. Dial "8162" to set Quick Talk to Analog Input Mode—
a beep indicates the command is accepted.
c. Dial "999" , wait for the beep, then hang up the
telephone to complete programming.
HIGH THRESHOLD SETPOINT
LOW THRESHOLD SETPOINT
0
MIN
.
FIG–9. ANALOG INPUT MODE (EXAMPLE)
SETTING ANALOG MODES (continued from page 17)
HIGH THRESHOLD SETPOINT
LOW THRESHOLD SETPOINT
"
SECURE
"
"
ALARM
"
"
MALFUNCTION
"
FIG–10. TERMINATED ALARM INPUT MODE
(EXAMPLE)
2. TERMINATED ALARM INPUT MODE: This mode is useful
in security alarm applications, where the "Secure" (Good)
condition is a range of voltages. Voltages above or below
this range represent "Alarm" (Bad) conditions. See Fig–10.
The "Secure" condition is the range of voltage between the
High and Low Threshold Setpoints. Switch 1 OPEN
message is activated in this range. Voltage above High
Threshold Setpoint, or below Low Threshold Setpoint
activates the Switch 1 CLOSED message.
To Set Terminated Alarm input Mode:
a. Pick up the telephone receiver and listen for the
acknowledge tone.
b. Dial "8163" to set Quick Talk to Terminated Alarm Input
Mode—a beep indicates the command is accepted.
c. Dial "999" , wait for the beep and then hang up the
telephone to complete the programming.
Setting the High Threshold Setpoint in either Analog
Input, or in Terminated alarm Input Mode:
a. Pick up the telephone receiver and listen for the
acknowledge tone.
b. Dial "818xxx" , "xxx" being the selected code from Table 1,
below. A beep indicates the command is accepted.
EXAMPLE: 185 represents a threshold of
approximately 3.6 Volts. Dial "818185" to set
3.6 Volts as the High Threshold Setpoint.
c. Dial "999" , wait for the beep, then hang up the
telephone to complete the programming.
Setting the Low Threshold Setpoint in either Analog
Input, or in Terminated alarm Input Mode:
a. Pick up the telephone receiver and listen for the
acknowledge tone.
b. Dial "817xxx" , "xxx" being the selected code from Table 1,
below. A beep indicates the command is accepted.
EXAMPLE: 85 represents a threshold of
approximately 1.6 Volts. Dial "817085" * to set
1.6 Volts as the Low Threshold Setpoint.
* NOTE: Inserting a zero before a 2-digit number
(Example: "85"), completes the command.
Insert two zeros in front of a one-digit number.
c. Dial "999" , wait for the beep, then hang up the
telephone to complete the programming.
To revert to Contact Closure Mode, using Switch 1
as a Contact Closure Input:
a. Pick up the telephone receiver and listen for the
acknowledge tone.
b. Dial "8161" —a beep indicates the command is ac-
cepted.
c. Dial "999" , wait for the beep, then hang up the t
elephone to complete the programming.
TABLE 10
THRESHOLD
VOLTAGE CODE
SETTING NUMBER
0 volts ............................ 000
1 volt ............................. 051
2 volts ............................ 102
3 volts ............................ 153
4 volts ............................ 204
5 volts ............................ 255
1
MIN
.
2
MIN
.
"
SWITCH OPEN
"
MESSAGE
Q.T. 1
"
SWITCH CLOSED
"
MESSAGE
Q.T. 1
NOTE
:
NO MESSAGE IS SENT UNTIL
A THRESHOLD IS CROSSED
Q
UICK
T
ALK
A
DVANCED
F
EATURES
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