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19.
J103 JUMPER SETTINGS FOR BATTERY TYPE
NOTE: When programming, use either fresh Alkaline batteries (or an external power supply), to power the Quick Talk.
When programming is finished, you may either insert Ni-Cd batteries or leave Alkaline batteries in place.
WARNING:
DO NOT attempt to charge Alkaline batteries from an external +12VDC power supply.
When powering Quick Talk with ALKALINE BATTERIES, set J103 as follows to disconnect the charging current paths:
a. To set the Quick Talk for use with alkaline batteries, move Jumper J103 to cover only one pin of the jumper base,
as shown in FIG—6 below; this setting prevents the flow of charging current.
b. Dial "943" to program the Quick Talk for use with alkaline batteries.
When powering Quick Talk with NI-CD BATTERIES, set J103 as follows to connect the charging current paths:
c. Cover both pins with Jumper J103, as shown in FIG—7 below, to charge the Ni-Cd batteries from the External
Power connection.
d. Dial "944" to adjust the Quick Talk voltage; the unit then transmits a "Low Battery" phrase.
NOTE: Because Ni-Cd batteries self-discharge rapidly, constantly charge them with external +12VDC power.
20.
SETTING ANALOG MODES
CAUTION: Protective circuits limit voltage measured by the microprocessor at Switch 1; however, voltage at the
positive terminal of Switch 1 must not exceed +5 VDC; higher voltages can damage the protective circuit.
NOTES: To facilitate using analog sensors, Quick Talk detects changes to analog signals on Switch 1.
Analog Mode threshold voltage equivalents: 0V is measured as (number) 0; +5V as (number) 255.
THE FORMULA for threshold setpoint of a user-selected voltage:
Threshold Setpoint =
-------------------------------------------
Quick Talk provides two analog modes: 1.) Analog Input Mode, and 2.) Terminated Alarm Input Mode, described on the
following page.
For assistance, call RITRON at 800-872-1872, or go to http://www.ritron.com
®
Quick Talk Features/ Applications Manual
J103
FIG—6. J103 POSITION FOR USE WITH
ALKALINE BATTERIES
J103
FIG—7. J103 POSITION FOR USE WITH
NI-CD BATTERIES
(User selected voltage) x 255
5 (volts)
+
+
+
+
+
+
+
+
EXAMPLE: For +3 volt setting:
Threshold Setpoint = ------------------ = 153
(Continued on page 16)
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3 x 255
5
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