Rixen TH-3800, Instruction Manual, Page: 10 / 16

F. Setting Mode
Under the testing mode, press more than 2 seconds, when shows up,
release to entering the setting mode. Press to select the setting
option, press to entering the selected mode. Press again to exit.
Under the Setting mode, the display contents describe as below:
-9-
Display content Description
Entering REF and SPAN Setting Mode
Entering Date and Time Setting Mode
Entering Sampling rate Setting Mode
℃ ℉ Entering Temperate unit Setting Mode
Entering Exit Setting Mode
Fig. REF, SPAN Setting Fig. Date, Time Setting Fig. Exit Setting