Heath Consultants GT Series - Manual (Page 29)

3-7
OPERATING PROCEDURE
To switch OFF:
• Press and hold NO . The screen, shown in
Fig. 3.9, is displayed.
Fig. 3.9 Switch OFF
• Press and hold both the LH button and the RH
button simultaneously to proceed with the
switch-off sequence.
4. Cal Due Date message is displayed with user
acknowledge for extended period option, if
overdue.
Calibration Due Date message is displayed, as
shown in Fig. 3.10.
Fig. 3.10 Calibration Due Date