Twilight Tenmars TN-TM197 Manual De Usuario página 25

5.3 Relative Value Measurement
Press and hold
Relative Value Measurement.
The difference between the two magnetic fields can
be compared here. For instance, the 1
field is measured to be 100. At the time, press
"REL" button, and the LCD displays 0; again,
measure the 2
value of the 2
display 20 (120-100=20).
Again, press and hold
5.4 Turn on backlight
Press
If connected via an external power supply, the
backlight will lit automatically and stay on.
＊ The backlight will automatically turn off after
being lit for 30 seconds.
5.5 Manual Record for One Log
Press
show "REC" and the number of logs. For instance, if
the current number is 10, it will be increased by 1 at
each pressing. The number of logs is limited to be
200; if exceeded, the LCD will show "Full".
5.6 Auto Record
Press and hold
auto-recording function is enabled.
Again, press
nd
magnetic field. If the measured
nd
magnetic field is 120, the LCD will
to turn the backlight on or off.
to save one log of data, the LCD will
, LCD displays
to quit this function.
The record is setup on PC via USB
connection.
If the power is insufficient when
recording in logs,
for ≥2 seconds to start
to quit this function.
will appears.
6
TM-197
st
magnetic
, and the