Gemini 4100 Instruction Manual page 7

It is possible to change the counter values of the Gemini. This feature can be
enabled or disabled by the programming of the "Operator Accessible Functions
Modes", function code 66. The "Counter Load Value" is not stored when the unit
is powered down. When the unit is powered up, the Counter Load values for both
counters (if Dual counter personality) are reset to zero. Once changed, the values
will be held until the unit is again powered down.
To access the Counter Load value for the desired counter;
first, press the "+/-" key, if necessary, so that the display is
indicating the counter value which is to be changed.
Secondly, press the "E" key and while holding it down,
press the "+/-" key.
The Gemini will now display the displayed Counter Load
value. (It will be zero, unless the value had been changed
since the unit was powered up.)
To change the value, press the key under the digit to be
changed as explained previously for the Preset.
To load the value into the counter, press the "E" key.
The display will flash momentarily and will display the
counter with the new value.
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