Display reads E1 momentarily. (1) This indicates that an invalid key-
pad entry has been made. Review
keystroke sequence, or consult
manual for input instructions.
Display reads E2 momentarily. (1) Attempt made to activate non-
installed ramp function. NOTE:
RAMP Function enabled on
Models 845 and 855 only.
Display reads HI. (1) Meter-mode input-temperature
exceeds rating of selected sensor.
(2) Calibrator-mode keypad-entry
exceeds rating of sensor type.
Display reads LO. (1) Meter-mode input-temperature too
low for accurate measurement.
(2) Calibrator-mode keypad-entry too
low for accurate simulation.
Figure 2. Keypad
11
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