Red Lion GEMINI 2 - Manual (Page 9)

An automatic exit will take place after six seconds or immediately if the
Program Disable terminal is connected to common. Normal length of display
time for each of the patterns is approximately 0.5 seconds. Rapidly pressing the
“+/-” key during self test can speed up the process.
INPUT CIRCUITRY & SET-UP
There are two independent input channels on the Gemini. Various types of
sensor outputs can be accommodated by appropriate DIP switch set-up; such as
TTL or CMOS logic, current sinking, current sourcing, or dry contact.
Channel A consists of a logic input and a separate low level magnetic pickup
input.
Channel B is a completely independent count or control input channel. Like
Channel A, it can be programmed with DIP switches for a wide variety of logic
inputs and is identical to Channel A in this regard.
For a complete detailed description of set-up, see Appendix “A”.
OVERFLOW INDICATION
The Gemini features an overflow indicator (LED) which is located to the left
of the sixth digit and above the polarity annunciator. This LED will turn on if the
capacity of the display (6-digits) is exceeded or if the internal count capacity
(9-digits) is exceeded. Use of extremely small scale multiplier and scale factor
values can cause the internal count capacity to overflow before the displayed
value would overflow. It should also be noted that the use of Right Hand Dummy
Zeros or Scale Factors larger than one could cause the Displayed value to
overflow before a value of 999,999 (6-digits) is accumulated.
When the capacity of the display is exceeded, the count value will be
maintained and will be valid. But if the internal count value is exceeded, then this
value may no longer be valid.
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