Omega Model CYD211 User’s Manual
3-10 Operation
3.10 LOCKING AND UNLOCKING THE KEYPAD
The keypad lock feature prevents accidental changes to parameter values.
When the keypad is locked, only the alarm reset function of the
Select
key
still functions. All other key functions are ignored.
To lock the keypad, press and hold the
Enter
key for 10 seconds. The
display will show “
” indicating the keypad is now locked. Release the
Enter
key and the display will return to normal operation.
To unlock the keypad, press and hold the
Enter
key for 10 seconds. The
display will show “
” indicating the keypad is now unlocked. Release
the
Enter
key and the display will return to normal operation.
3.11 RESETTING THE MODEL CYD211 TO DEFAULT VALUES
It is sometimes necessary to reset instrument parameters that are stored in
nonvolatile memory called EEPROM. The default values of the Model
CYD211 are shown below in Table 3-6. Resetting to default values does not
affect the user curve or the calibration data.
To reset the Model CYD211 to default values, press and hold both the
s
or
t
keys for 10 seconds. All of the LED digits will illuminate when the
memory has been reset. Release the buttons and the display will return to
normal operation.
Table 3-6. Model CYD211 Default Values
Parameter Default
Parameter Default
Input Type
Silicon Diode
Alarm Latch
Off
Input Curve
DT-470
Analog Mode
Voltage
Display Units
K
Analog Range
5
Alarm Function
Off
Relay 1 Mode
Off
Alarm High
0 K
Relay 2 Mode
Off
Alarm Low
0 K
Keypad Lock
Unlocked
Alarm Deadband
0 K
Display Brightness 8
3.12 CHECKING CODE DATE REVISION
To check revision date of the firmware code, press and hold the
Select
key
until the display shows the code date. It is in the format of MMDDYY,
where MM is the month, DD is the day, and YY is the year of the code.
Release the key and the display returns to normal operation.