Laurel-electronics LAUREATE SERIES COUNTER_TIMER Manual do Utilizador descarregar pdf (Página 47)

17. PARALLEL BCD OUTPUT

17. 1 OPERATING MODE MENU SELECTION

The following menu items are accessible only with a BCD option installed and appropriate

lockouts enabled. See Section 10 for further information.

17. 2 BCD OUTPUT LEVELS

The BCD option provides isolated, buffered, stored, 3-state parallel outputs that are selectable

for either 0 to 5V logic levels (LSTTL, CMOS compatible) or 0 to 15Vdc. Selection jumpers are

located on the BCD board. BCD outputs are positive true. Polarity bit is positive true for +sign.

LOGIC LEVEL JUMPER REQUIRED

0 to 5Vdc b

0 to 15Vdc a

17. 3 BCD CONTROL SIGNALS

Enable Logical 0 - All outputs go to the high impedance state

Logical 1 - BCD information is available at outputs.

BCD Hold Logical 0 - BCD from last update prior to BCD Hold going low is stored

Logical 1- BCD information updates at selected rate.

Data Ready Logical 0 - BCD outputs are valid

Logical 1 - BCD outputs are not valid

VALUE SELECT KEY

Press the key until SEr

1 (Serial interface setup 1) is

displayed.

Press to display status.

Press again to select

digit. Selected digit will flash.

Digit 3: Output filtering

Digit 5: Output update rate

Press to select value for

flashing digit

3: "0"-Send unfiltered signal

"1"-Send filtered signal

5: "0"-Line frequency

"1" to "9"

- Batch display rate (3.5/

sec) to Batch display rate

/ 256 (1 every 15 min.)

1 2 3 4 5

MENU KEY

DIGIT SELECT KEY

-45-

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 55 56

Sem comentários

Laurel-electronics LAUREATE SERIES COUNTER_TIMER Manual do Utilizador Página 47