Extech Instruments CG304 User Manual page 5

STATISTICAL VIEWS Menu
1. Press the LEFT button to access the programming menu
2. Press the LEFT button to choose STATISTCAL VIEW
3. Use the UP and DOWN buttons to scroll through the AVERAGE, MINIMUM, MAXIMUM,
NUMBER OF DATA, and SDEV (Standard Deviation) values for the stored readings.
4. 'NO DATA' will display if no readings are available for the meter to analyze. Stored readings
will clear when the meter powers down unless the GROUP feature is used (refer to GROUP
function explanation later in this section).
5. Press the BACK and then the ESC soft‐keys to return to the normal operating mode.
OPTIONS Menu
1. Press the LEFT button to access the programming menu
2. Use the UP/DOWN button to scroll down to OPTIONS
3. Press LEFT button to select OPTIONS
4. Use the UP and DOWN buttons to scroll to the MEASURE MODE, WORKING MODE, PROBE
USED, UNIT SETTINGS, BACKLIGHT, LCD STATISTICS, AND AUTO POWER OFF parameters. Use
the LEFT soft‐key to select the desired parameter. Each parameter is detailed below:
a. Measure Modes
Select CONTINUOUS or SINGLE under MEASURE MODES in the OPTIONS Menu using the
arrow buttons.
In the CONTINUOUS measurement mode the meter displays a running average of readings as
they are taken. Note that the audible measurement 'beep' is not active in this mode.
In the SINGLE measurement mode measurements are taken one at a time. Single mode
measurement readings are accompanied by an audible tone.
b. Working Modes
Select DIRECT or GROUP 1, 2, 3, or 4 under WORKING MODES in the OPTIONS Menu using
the arrow buttons.
In DIRECT mode, individual readings are logged to memory. When power is switched off or if
the meter is switched to GROUP mode, all DIRECT readings will be cleared. However, the
statistical analysis data will remain. The statistical analysis utility can evaluate up to 80
readings. When the memory is filled, new readings will replace old readings. Lastly, this
mode has its own calibration and alarm limit values.
In GROUP mode each group memory can store a maximum of 80 readings and 5 statistical
values. Calibration and alarm limit values can be individually set and stored for each group.
When the memory is filled, measurements will continue to be taken but readings will no
longer log (previously logged readings are not affected); in addition, statistical data will no
longer update. If desired, the group data, statistical values, calibration data, and alarm limit
values can be deleted using the programming menu.
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