Keyboard and Displays
Entering setpoints
CLEAR
can be used anytime during an entry, prior to pressing
ENTER
, to erase the entry in progress. The * disappears, and the original setpoint display is restored.
Rules regarding keyboard usage are summarized below:
CAn instrument function key, when pressed, is shown in the display along with its current setpoint value, and actual value for continuously monitored functions: signal levels, temperatures, flow rates.
-A displayed function is also ready for entering a new setpoint value simply by pressing appropriate keys.
CAn * (asterisk) is flashed as the new value is entered, indicating an entry in progress.
C
ENTER
must terminate a numeric entry. It is also required in terminating a sequence to assign a particular detector to a given output signal channel.
In general, any display showing the flashing * must be terminated using 
ENTER
.
Upon pressing
ENTER
, the value is verified to ensure it is within the range permitted for the particular function, and/or that the value is internally consistent with previously defined setpoint values for other, related functions.
-If the value is accepted, * disappears from the display indicating the new value is stored and implemented. For functions whose values are continuously monitored, * is replaced by the actual value.
-If the value is out of range, or inconsistent with another setpoint value, an appropriate message is displayed. Another setpoint value may be entered immediately without again pressing the particular instrument function key.
The original setpoint value remains in force until an acceptable entry is made.
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