1-4
IM DLM4038-03EN
1.2 Keys and Knobs
Vertical Axis
CH1 to CH8 Keys, L Key, and A|B Key (Option)
Display a menu for turning analog signal input channels on and off, for expanding and reducing the
vertical axis, and for setting the vertical position, coupling, probe type, offset voltage, bandwidth limit,
linear scaling, and waveform labels. Also, press any of these keys before pressing the SCALE or
POSITION knob to select which channel the SCALE knob will control. The LED between the SCALE
and POSITION knobs illuminates in the color assigned to the selected channel (the color around the
CH key). Each CH key illuminates when its corresponding channel is being displayed.
Use the L key to configure the logic signal input port LOGIC(L). When you press the L key, it illuminates
(and the CH8 key light turns off), and you can configure the LOGIC(L) port. When you press the CH8
key next to the L key, the CH8 key illuminates (and the L key light turns off), and you can configure the
channel 8. The DLM4000 is designed so that you have to switch between setting channel 8 and the
logic channel.
Use the A|B key (/L16 option) to configure the logic signal input ports LOGIC(A|B). When you press
the A|B key, it illuminates, and you can configure the LOGIC(A|B) ports.
POSITION Knob (Vertical position knob)
Use the POSITION knob to move the display position (vertical position) of the input waveform along
the vertical axis. Before you turn this knob, press a key from CH1 to CH8 (L) to specify the waveform
whose position you want to adjust. This knob has a push switch. You can press the knob to reset the
display position to 0.00 div. You can use this knob in the same manner when you press the L key or
the A|B key (/L16 option).
SCALE Knob
Use this knob to set the vertical scale. Before you turn this knob, press a key from CH1 to CH8 (L)
to specify the waveform whose position you want to adjust. If you change the scale while signal
acquisition is stopped, the waveform is expanded or reduced vertically. If you restart signal acquisition,
the DLM4000 acquires signals using the new vertical scale. This knob has a push switch. You can
press the knob to switch the resolution. If you press the knob so that Fine illuminates, the resolution is
set to fine mode.
When you press the L key or the A|B key (/L16 option), you can use this knob to change the vertical
display size between three levels.
CH UTIL Key
Use this key to display or hide all input channels and ports, or to copy settings between analog signal
input channels.
Models with the /L16 option
