GMI First Responder, User Handbook Manual

Page: 79 / 104

B-3
Entering FCM
1) Switch the instrument on and allow it to complete
its warm-up checks.
2) Double press Switch One ( ) to initiate
instrument switch off. While OFF is displayed in
the LCD and before the instrument actually
switches off, enter the four switch access code.
Note: Allow at least one second between switch
presses when entering the four switch sequence.
The default (factory set) entry code is switch
sequence 1,2,3,4. Alternative codes are user
selectable.
When the instrument is in FCM the “CAL” message
alternates on the display with the currently selected range.
An example of the display is shown in Figure B-3.
Fig. B-3 Field Calibration Display
In CAL mode, the instrument switches have the functions
shown in Figure B-4.
FIELD CALIBRATION