Thermo Fisher Scientific Alpha RES 1000 - Manual (Page 16)

Operating Instructions Alpha RES 1000
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5.2.1.1 Clearing Calibration security code from display
The calibration security code automatically resets from “11” to “000” after returning to Measurement mode.
5.2.2 How to enter and change parameters in Advanced Setup mode
1) Press ENTER key once. Upper display shows “000” and lower display shows “S.Cd” to prompt for
Advanced Setup security code.
2) Press Δ or ∇ keys to scroll display to Setup security code “22”. NOTE: Pressing ENTER key at a value
other than “22” causes the controller to revert to Measurement mode.
3) Press ENTER key.
4) Upper display reads “tc”. You are now in the Advanced Setup mode. See Section 7 for complete
instructions. To return to Measurement mode, press Δ and ∇ keys simultaneously (escape).
NOTE: If to view (not change) set up parameters, push ENTER key when security code reads “000”.
5.2.2.1 Clearing Advanced Setup security code from display
Having entered the security code and returned to the Measurement mode, security code “22” still appears on
display whenever ENTER key is pressed. To conceal the security code, it must be manually reset. To clear
Advanced Setup security code from display:
1) Press ENTER key in Measurement mode.
2) Set to any security code (not 11 or 22) and complete by pressing ENTER.
NOTE: When you enter the Calibration mode with code “11” or Advanced Setup mode with security code
“22”, unit automatically enters into HOLD mode until you return back to Measurement mode. The HOLD
annunciator is displayed at the upper left of the display. While on HOLD, current (0/4..20mA) output is
frozen and set point relays are deactivated.