Download DIGITAL PRESSURE CONTROLLER

4.6.1.5.1 Date/Time
The DPC’s system clock is continuously updated. If the date or time requires editing, the
following applies;
1. The date and time are set from the Setup | System | Menu. From the Main
Menu (press [PREVIOUS] until the Main Menu appears), press Menu [F6], then
Setup [F2], and then System [F5].
2. To set the system date, turn the rotary knob until Date is highlighted. Use the
numeric keypad to enter the current four-digit year, month, and day (yyyymmdd).
All digits must be entered. Press [ENTER] to accept.
3. To set the system time, turn the rotary knob until Time is highlighted. Use the
numeric keypad to enter the current hour, minute, and second (hhmmss). All digits
must be entered. Press [ENTER] to accept.
4.6.1.5.2 Reset
The Reset [F1] command is used to re-boot the DPC.
1. To reset the system, from the Main Menu (press [PREVIOUS] until the Main Menu
appears), press Menu [F6], then Setup [F2], then System [F5], and then Reset
[F1].
4.6.2 MENU | CALIBRATE
The Menu | Calibrate command is used to perform the calibrations on all of the sensors
utilized by the DPC. The 7252 can be completely calibrated using the front panel
interface. It does not require any external computer or software in order to perform a
successful calibration. It also has the capability of being calibrated remotely through
either the RS232 or IEEE-488 interface. The 7252 will guide the operator through a
menu driven calibration procedure identifying the pressures that should be supplied by a
standard. Following the calibration procedure, the 7252 calculates and saves its own
coefficients. The calibration coefficients are date stamped so the user can easily identify
the last time the instrument went through a full calibration, when the coefficients were last
edited or when the DPC was re-zeroed.
The calibration section in the DPC can be password protected to prevent any
unauthorized entry into the calibration section of the system. Please refer to the
Maintenance Section (Section 6.0) of the manual for more detailed information regarding
the calibration of the DPC. The calibration menu is identical in both channels. Press the
Sensor function key to select the correct sensor from either channel.
4.6.2.1 Calibration Password
The calibration password allows the user to protect access to DPC calibration constants
and the calibration procedure. If the calibration password is set to any number other
than zero, it is required before the user is allowed to calibrate the DPC or manually
change the calibration constants.
IMPORTANT: It is recommended that the access password be recorded and filed in a
secure location.
4-17
LOCAL OPERATION