SWITCH DEFINITIONS (cont)
Step and Min-Max Switch (S3)
This switch has a dual function. When in the MENU sequence, it steps the
digit to be incremented, one position to the right. Using S3 in conjunction
with S2 allows rapid updating of all parameter values.
When in the MENU sequence, depressing S3 momentarily displays the
maximum and minimum flow readings diplayed since power was applied.
These values are stored in static RAMS and are reset when power is
applied.
Zero and Exit Switch (S4)
This switch has a dual function. When in the MENU sequence, this
switch must be depressed and held for approximately 3 seconds before it
zeroes the reading on the display. The ZERO annunciator on the front panel
should be illuminated. ZEROing is accomplished by storing the reading just
prior to ZEROing. This value is retained in non-volatile memory and recalled
when power is applied. It is also used to compensate the StPt control
voltage output.
When in the MENU sequence, this switch is used to exit. All values entered
prior to exiting, except for the StPt value, will be retained in non-volatile
memory and recalled when power is applied.
Cal Switch (S5)
This switch must be depressed and held for approximately 3 seconds to
auto-calibrate the readout. When initially held and depressed for 3 seconds
the CAL annunciator will extinquish and the display will read the raw data
generated by the analog-to-digital converter. When depressed and held
again for 3 seconds the CAL annunciator will illuminate and the raw data will
automatically be scaled to the CAL value entered previously. (Reference the
PROGRAM INSTRUCTIONS page 10 and the CALIBRATION
INSTRUCTIONS on page 13 for more information)
