Ritron Quick Talk Owner's Manual download pdf (Page 17)

Page 15

For assistance, call RITRON at 800-872-1872, or go to

http://www.ritron.com

Quick Talk Features/ Applications Manual

Page 15

Page 15 Page 15

FIG—6. J103 POSITION FOR USE WITH

ALKALINE BATTERIES

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.

J103

FIG—7. J103 POSITION FOR USE WITH

NI-CD BATTERIES

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:

(User selected voltage) x 255

Threshold Setpoint = -------------------------------------------

5 (volts)

Quick Talk provides two analog modes: 1.) Analog Input Mode, and 2.) Terminated Alarm Input Mode, described on the

following page.

EXAMPLE: For +3 volt setting:

3 x 255

Threshold Setpoint = ------------------ = 153

(Continued on page 16)

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 23

No comments

Ritron Quick Talk Owner's Manual Page 17