For Use As A Benchtop Instrument (Ac Adapter); Locking Out Non Si Units; Using Clamp-On Ferrites; Figure 1 Locking Out Non Si Units - Fluke 1523 Technical Manual

1523, 1524 Reference Thermometer

Using Clamp-On Ferrites

1.4.2.2

For Use As a Benchtop Instrument (AC Adapter)

1.4.3

Locking out non SI units

Instructions for locking out non SI units (see illustration below)
Press and hold
Figure 1
1.5 Using Clamp-On Ferrites
4
Press
Display reads:
Release
Locking out non SI units
SI units only ON
+
° °
C F
SI units only ON
+
° °
C F
SI units only OFF