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•
Enable or Disable User-defined Channel GroupPress Group On/Off, then
rotate the multifunction knob
down the knob to enable or disable all the channels in this channel group.
You can also enable the touch screen to tap the specified group and select it.
The enabled channel groups are marked with
groups are marked with
NOTE
This function is only valid when the channels have been grouped by users. For how to
carry out group settings, refer to descriptions in "
14.3
To Set the Threshold
The threshold levels of channels D7-D0 and channels D15-D8 can be set separately
according to your needs. Press Threshold to enter the threshold setting menu. When
the voltage of the input signal is greater than the currently set threshold, it is treated
as logic 1; otherwise, it is treated as logic 0.
Press D7-D0 or D15-D8 respectively to open the threshold selection list and select
the preset threshold. The available preset values include TTL(1.4 V), CMOS5.0(2.5 V),
CMOS3.3(1.65 V), CMOS2.5(1.25 V), CMOS1.8(0.9 V), ECL(-1.3 V), PECL(3.7 V),
LVDS(1.2 V), and 0.00 V. You can also press D7-D0 or D15-D8 respectively, then rotate
the multifunction knob
the desired threshold.
Besides, you can also enable the touch screen and tap the LA status area. Then the
channel and threshold setting interface is displayed. You can select the channel and
set the threshold in this pop-up interface. Tap the drop-down button (
Threshold to select the preset threshold from the drop-down list. Also you can tap the
input field of Threshold to input the value with the pop-up numeric keypad.
14.4
Auto Arrangement Setting
Press Arrange to select the waveform order mode of the currently selected channels
on the screen. You can select "D0-D15" or "D15-D0", By default, it is "D15-D0".
•
D0-D15: the waveforms on the screen are D0-D15 in sequence from top to
bottom.
•
D15-D0: the waveforms on the screen are D15-D0 in sequence from top to
bottom.
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to select the specified channel group. Press
.
Group Setting
with a small step value or use the numeric keypad to set
Digital Channel
, and the disabled channel
".
) of
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