CM4 Four-Point Continuous Monitor
CM4 Technical Manual
7-14
7.6.5 Set Idle Time (3.5.5)
Purpose
Use the set idle time function to set the amount of time the CM4
remains out of Monitor Mode before causing an instrument fault. This is
to prevent the unit from being accidentally left out of Monitor Mode.
Instructions
1. Press PROGRAM to exit Monitor Mode.
2. From the 3–SET-UP MENU, choose the subfunction 5–DATE
& TIME, then 5–SET IDLE TIME.
3 – SET-UP MODE
5 – DATE & TIME
5 – SET IDLE TIME
The display reads:
IDLE TIME = 15 MIN
3. Use the numeric keys to enter the desired idle time, between
0 and 45 (0 disables this function).
4. Press ENTER to save the new time and return to the date and
time menu.
7.6.6 Set Duty Cycle (optional) (3.5.6)
Purpose
Use the optional set duty cycle to set an interval at which the CM4
samples. The Chemcassette
®
is not advanced until the duty cycle
interval has elapsed, thereby minimizing tape consumption for known
high background levels.
Instructions
1. Press PROGRAM to exit Monitor Mode.
2. From the 3–SET-UP MENU, choose the subfunction 5–DATE
& TIME, then 6–SET DUTY CYCLE.
3 – SET-UP MODE
5 – DATE & TIME
6 – SET DUTY CYCLE
The display reads:
DUTY CYCLE = 900 SEC
3. Use the numeric keypad to enter the desired time period, in
seconds, at which the CM4 samples. 900 seconds (for standard
calibrations) and 2700 seconds (for XP/XP4 calibrations) are the
maximums. Enter 000 to disable the duty cycle function.
4. Press ENTER to save the set duty cycle time and return to the
date and time function.
7.7 Function 3.6 – Access Setup
Password protection is included for selected menu functions. The
keyboard lock password is now used also for the menu password.
One password is used for the Model CM4. It controls access to
keyboard lock, protected menu access, and optionally enabled menu
access.
The password is optional for the following menu entries:
1.2
MANUAL K-FACTOR
1.3
CAL CURRENT LOOP
1.4
TUNE CURRENT LOOP
3
SET-UP MODE
4.6
SET FLOW
4.8
PUMP LIMITS
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