Red Lion GEMINI 2 User Manual

Page 11

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CODE 44 - NUMBER OF COUNT EDGES

The Gemini can be programmed for either single edge or two edge (doubling)

counting. The number of count edges cannot be set when the count mode is

programmed for quadrature X4 operation (the Gemini will ignore any attempt to

enter function command code 44 when set for quadrature X4).
[44 1] SINGLE EDGE COUNTING - The unit counts on the negative going

(falling) edge of the count input signal. The count mode descriptions

describe how each mode uses this method of edge counting.

[44 2] TWO EDGE COUNTING - This mode is used when doubling of the

count signal input is required. The unit counts on the positive going

(rising) edge of the count input signal, as well as, the negative going

(falling) edge.

CODE 45 - SCALE MULTIPLIER

There are four scale multiplier values that are available. They are: 1; 0.1; 0.01;

and 0.001. They effectively divide the internal count value by 1, 10, 100, and

1000 respectively, to yield the displayed count value. Note: Use of a small scale

multiplier in conjunction with a small scale factor could cause the internal count

value to be exceeded before the 6-digit display value is exceeded. See “Overflow

Indication” section for more details.
[45 1] SCALE MULTIPLIER VALUE OF 1 - This value multiplies the

internal count by 1.

[45 2] SCALE MULTIPLIER VALUE OF 0.1 - This value multiplies the

internal count by 0.1. (Effectively divides by 10.)

[45 3] SCALE MULTIPLIER VALUE OF 0.01 - This value multiplies the

internal count by 0.01. (Effectively divides by 100.)

[45 4] SCALE MULTIPLIER VALUE OF 0.001 - This value multiplies the

internal count by 0.001. (Effectively divides by 1000.)

CODE 46 - DECIMAL POINT & LEADING ZERO BLANKING

There are six basic modes of decimal point placement on the Gemini. The

decimal point is placed to the right of the display digit that corresponds to the

mode identifier. (The right most decimal point, digit 1, is never turned on.) A “-”

sign in front of the mode identifier will inhibit leading zero blanking. The

absence of the “-” sign will enable leading zero blanking.

[46 1]

0

[46 2]

0.0

[46 3]

0.0 0

[46 4]

0.0 0 0

[46 5]

0.0 0 0 0

[46 6]

0.0 0 0 0 0

[46 -1]

0 0 0 0 0 0

[46 -2]

0 0 0 0 0.0

[46 -3]

0 0 0 0.0 0

[46 -4]

0 0 0.0 0 0

[46 -5]

0 0.0 0 0 0

[46 -6]

0.0 0 0 0 0

CODE 51 - RESET MODES

The Gemini has six different reset modes. They are: Manual Reset to Zero;

Manual Reset to Preset; Automatic Reset to Zero After Output Time Delay;

Automatic Reset to Preset after Output Time Delay; Automatic Reset to Zero at

the Beginning of the Output Time Delay; and Automatic Reset to Preset at the

Beginning of the Output Time Delay. (Note: For the Gemini 2000, reset to preset

modes reset to preset 2 and Output refers to Output 2.) There are also two

methods by which manual reset can act on the unit (reset must be enabled). The

first is a “maintained” reset action where the unit is held at reset as long as the

reset terminal is held low or the front panel reset button is pressed. The second is a

“momentary” reset in which the unit resets when reset is activated and

immediately starts counting even though the terminal may still be low or the reset

button may still be pressed. (Note: In momentary reset, the display will not

update until reset is released, but internal counting and all other functions are

operative.) A “-” sign in front of the code identifier will provide for

“momentary” reset, and the absence of a “-” sign will give “maintained” reset.
[51 1] MANUAL RESET TO ZERO (RTZ) - Manual reset to zero is

accomplished by pulling remote reset to ground, or if the front panel reset

is enabled, by pressing the front panel reset button. Reset is “maintained”.

[51 2] MANUAL RESET TO PRESET (RTP) - Manual reset to preset is

accomplished by pulling reset to ground, or if the front panel reset is

enabled, by pressing the front panel reset button. Reset is “maintained”.

–9–

LEADING ZERO

BLANKING

LEADING ZERO

BLANKING INHIBITED

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