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20
GENERAL INFORMATION
mode.
• Set-ups recalled from unused locations will display and output 0°.
• Calibrator set-ups can be recalled even when the unit is func- tioning
in the meter mode. The same 10 storage locations are shared in both
meter and calibrator modes.
• Readings stored in memory while operating as a METER, can be
recalled in the CALIB mode. In this unusual application, the unit
generates calibrator outputs that simulate earlier stored meter inputs.
To Erase Set-Up Locations (Calibrator Mode):
1. Individual set-up locations can be erased by recalling the location followed by a press to the
CLEAR key.
eg. RECALL 5
CLEAR
9. STEP FUNCTION
When operating in the CALIBRATOR mode, the STEP key will sequentially recall data stored in
memory (up to 10 steps). At each step, the calibrator will display and output these parameters.
The STEP function is non-functional in METER mode.
10. RAMP FUNCTION: Models 845 and 855 only
This feature allows the calibrator to automatically ramp up and down a user- defined staircase.
Up and down keys allow for manual ramping by the user.
To activate the RAMP function, the instrument must first be in the CALIBRATE mode. Depress the
RAMP key once to enter the ramp programming mode. The display reads "prog", with memory
annunciators 1-4 flashing. A second press to the RAMP key starts automatic ramping. A third
press turns off the RAMP function.
User definable RAMP memory locations 1, 2, 3, & 4 are dedicated to storage of RAMP
parameters; step size, staircase starting point, upper limit, and lower limit respectively. These
memory locations are accessible only when in RAMP “prog” mode, and are independent of the
other 10 memory locations. Numeric values for RAMP parameters can be set, stored, recalled and
cleared like other calibrator settings. (Refer page 16, CALIBRATOR MODE OPERATION).
When automatic ramping is in progress, a press to either the 7 or 8 key activates manual up-
ramping or down-ramping respectively. Whenever the battery is replaced (and memory backup is
not performed), the ramp parameters default to factory-set values:
LOC 1 Step Size =10°F (K TC)
2 Start Point = 500°F
3 High Limit = 550°F