HELIX CTI-CRYOGENICS On-Board FastRegen Programming And Operation Instructions page 56

Programming and Operation
Parameter Lock
Zero Auxiliary Thermocouple
3-42
NOTE: The Parameter Lock parameter cannot be accessed unless a
password has been entered.
1. Press the SERVICE key on the keypad/display. The serial
number and software version information are displayed.
2. Press the Next key until the Password? prompt is displayed.
3. Enter the password and press Enter.
4. Press the Next key until the current status of Param Lock is dis-
played.
5. Press 1 to enable or press 0 to disable parameter lock mode.
6. Press the MONITOR key. The On-Board microprocessor will
monitor system operation.
NOTE: The Zero Auxiliary Thermocouple parameter cannot be accessed
unless a password has been entered.
NOTE: The auxiliary thermocouple gauge must be turned ON and under a
vacuum of less than 10
be used. Any attempt to zero the gauge at a pressure above 30 microns, or
when the gauge is turned OFF, results in a calibration failure.
1. Press the SERVICE key on the keypad/display. The serial
number and software version information are displayed.
2. Press the Next key until the Password? prompt is displayed.
3. Enter the password and press Enter.
4. Press the Next key until Zero AUX TC is displayed.
5. Press the Enter key. The auxiliary thermocouple pressure is dis-
played until zero is reached. After approximately 1 minute,
Complete will be displayed.
6. Press the MONITOR key. The On-Board microprocessor will
monitor system operation.
-4
torr (less than 1 micron) before this procedure can
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C TI CRYOGENICS
HELIX TECHNOLOGY CORPORATION
P/N 8040406