190M Series III
Users Manual
6
Key Illumination
Some keys are provided with an illumination LED. For an explanation of the LED function, see
.
Table 2. Keys
Item
Description
O
On: The display is off, test tool is running. See
.
Off: in all other situations
H
On: Measurements are stopped, the screen is frozen. (HOLD)
Off: Measurements are running. (RUN)
A/
B/
C/
D
On: The range key, the move up/down key, and the F1-4 key labels, apply to the
illuminated channel key(s).
Off: -
J
On: Manual operating mode.
Off: Automatic operating mode, optimizes the waveform position, range, time base
and triggering (Connect-and-View™)
T
On: Signal is triggered
Off: Signal is not triggered
Flashing: waiting for a trigger at Single Shot or On Trigger waveform update.
