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3.3 Setup Mode:
With four dashes in the display, press the setup key to enter the SETUP
mode. The display shows four zeros representing the password. Use the
arrow keys to change each digit and the enter key to select the digit. If the
password is correct, the unit goes to the SETUP mode. If the password is
forgotten, the default password is 9157.
The SETUP mode menu includes Zero, Calibration Level, Calibration, Hi
Level Alarm, LO Level Alarm (Oxygen), STEL Alarm (Toxic), TWA
Alarm (Toxic), Confidence Chirp Status, Time, Date, Temperature, and
Password. The ▲ arrow and ▼ arrow keys move through the menu items.
Press the setup key to return to the display with the four dashes.
3.3.1 Zero:
The display shows the current level along with the LVL and ZERO annun-
ciator. Press the enter key to zero the unit. If the sensor can not be zeroed,
an error message is displayed. See Section 3.7 "ZEROING" on page 13 and
Section 5 "ERROR MESSAGES" on page 21 for further information.
3.3.2 Calibration Level:
The display shows the calibration gas level along with the CAL and LVL
annunciator. Pressing the enter key allows adjustment of the calibration gas
level. The first digit will flash. Use the arrow and enter keys to adjust the
level.
3.3.3 Calibration:
The display shows the CAL annunciator and the current sensor reading.
When the reading is stable, press the enter key and the display will show
CAL indicating that it is adjusting the calibration. When calibration is
complete, the display returns to the new sensor reading. If the sensor can
not be calibrated, an error message is shown. See Section 3.8
"CALIBRATION" on page 14 and Section 5 "ERROR MESSAGES" on
page 21 for further information.
3.3.4 Alarm Levels:
For the high level alarm, the HI and LVL annunciator will be on the dis-
play. For the low level alarm (oxygen only) LO and LVL will be on the
display. For the STEL alarm (toxics only) HI and STEL will be on the
display. For the TWA alarm (toxics only) HI and TWA will be on the dis-
play. Pressing the enter key causes the first digit to flash. Use the arrow and
enter keys to adjust the level.
3.3.5 Confidence Chirp Status:
The confidence chirp feature gives a single audible chirp every 30 seconds
while the unit is running. The confidence chirp status is indicated by CC 1 if
turned on and CC 0 if turned off. Pressing the enter key changes the status.
3.3.6 Time:
The current time of day is displayed in 24-hour format. Pressing the enter
key causes the first digit to flash. Change the time using the arrow and enter
keys. If the new time entered is not a valid time, the original time is put
back into the display with the first digit flashing.
3.3.7 Date:
The display will show "dAtE". Pressing the enter key displays a "d" fol-
lowed by the day of the month with the first digit flashing. Use the arrow
and enter keys to change the day. When the day is entered an "0" is dis-
played followed by the month with the first digit flashing. When the new
month has been entered, the year is displayed with the first digit flashing.
When the last digit of the year has been entered, the display will return to
dAtE. If any portion of the date is invalid, the original date is put back into
the display and it must be re-entered.
3.3.8 Temperature:
The current temperature reading is displayed followed by F for Fahrenheit
or C for Celsius. Pressing the enter key changes between Fahrenheit and
Celsius.
3.3.9 Password:
The display shows "PASS". Pressing the enter key shows "0000" with the
first digit flashing. Use the arrow keys to change the digit and the enter key
to accept it. When the last digit is entered, the display will return to
"PASS".
3.4 Zero Mode:
While four dashes are shown in the display, pressing the zero key enters the
ZERO mode (this operates the same as zeroing through the SETUP mode).
The LVL and ZERO annunciator appear along with the current gas level.
Pressing the enter key zeroes the unit. Pressing the zero key exits the Zero
mode menu. See Section 3.7 "ZEROING" on page 13 for further
information.
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