Red Lion GEMINI 2 - Manual (Page 5)

Data for the presets, scale factor, and time delays are entered differently. Each
digit key controls the digit on the display directly above it. Changing the digits
can be done by repeatedly pressing the key beneath the digit position you wish to
change or by merely holding it down. As you hold it down or press it, the value of
that digit will change cyclically, counting up to 9, then to 0, and then up again.
The 6 numbered keys correspond to the six digits, and the “+/-” key
correspond to polarity.
PROGRAMMING THE PERSONALITY
Entering function and mode is easily accomplished by
pressing the appropriate digit key. For the personality
function, enter 41 by pressing the front panel key 4.
Then press the front panel key 1. The leftmost LEDs
show the function; the rightmost is the present mode.
A new mode selection is made by entering a new
number. On some of the entries, you have the option of a
plus (+) or minus (-) sign. In the cases where a “+” sign is
required, no sign will be displayed. If you do enter a “-”
sign (using the “+/-” key), a minus sign will be displayed
in front of the appropriate digit.
Pressing the “E” key finalizes the change. The display
will now show the count or rate value immediately.
If you do not press the “E” key the change will not be
recorded. The display will remain for 15 seconds, and then
return to normal operating mode using the old function and
mode settings. (Note: The reset button “R”, if enabled, is
always active. Pressing reset will immediately abort the
function selection, and reset the instrument.)
The major personality is function code 41. If it is
changed from rate to counter or vice-versa, it may effect
settings like count mode, reset mode, and output
termination modes.
PROGRAMMING THE PRESETS, SCALE FACTOR, &
OUTPUT TIME DELAYS
The scale factor and preset values are commonly reprogrammed on a daily
basis. As such, single keystroke access has been provided on the front panel.
To change the scale factor, press the “3” key. The display
will then show you’re the present scale factor value. The
scale factor can be set from -5.9999 to +5.9999.
Changing the digits can be done by repeatedly pressing
the key beneath the digit position you wish to change or by
merely holding it down.
The new value will be entered when the “E” key is pressed.
This key must be held down until the display has blanked after
which the unit will return to the normal display mode.
The internal count value is multiplied by the scale factor value, which changes
the displayed value accordingly. This is true for all response modes, Count with
Inhibit, Count with UP/DN Control, Two Input Anti-Coincidence and for all
Quadrature Counting Modes.
–3–