TESTO 6681 Instruction Manual page 77

Specify with  or  whether Alarm x is to be used as the Alarm
1
relay or is to be not used. Confirm selection with SET and return
to Alarm x.
Change to another alarm using  or  and perform settings in the
2
same way.
Continue to Main Menu Settings using  or  or return to
3
Measuring Mode by pressing ESC.
1.4.6.5 Editing Main Menu Settings
You can edit instrument settings and other settings.
In Measuring Mode, press SET, select Main Menu Settings using  or 
and confirm selection with SET.
You can edit settings for:
Display

Language

H2O2 proportion by weight entry (optional with 3rd analog output)

Unit: %
Absolute pressure unit

Selection: bar, psi, mPa, hPa
Absolute pressure

Unit as selected above.
Code

 Editing display settings
You can set the brightness and contrast of the display.
1 Select Display Settings using  or  and confirm selection
with SET.
Select Backlight or Contrast using  or  and confirm selection
2
with SET.
One of the following parameters can now be selected using  or , after
which the selection must be confirmed with SET:
Backlight

The display illumination is changed.
Edit/select parameter with  or , confirm with SET or cancel entry
with ESC (the effect of the change in parameter can be seen during
input).
testo 6681 Ethernet
- 1.4 Operation 77