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All Digital Channels
1. Press the Digital button on the front panel to open the DIGITAL function menu.
2. Press the Channel Group softkey to select On or Off to switch all digital
channels which in this group on or off.
Also, under the DIGITAL function menu, press the Digital button on the front panel
to switch all digital channels off.
Logic Threshold
1. Press the Digital button on the front panel to open the DIGITAL function menu.
2. Press the Thresholds softkey to enter the THRESHOLDS menu.
3. Press the D0~D7or D8~D15 softkey, then turn the Universal Knob to select a
logic family preset or select Custom to define your own threshold.
Figure 103 THRESHOLDS Function Menu
Logic Family
Threshold Voltage
TTL
1.5 V
CMOS
1.65 V
LVCMOS3.3
1.65 V
LVCMOS2.5
1.25 V
Custom
Variable from -8 V to +8 V
The threshold you set applies to all channels.
Values greater than the set threshold are high (1) and values less than the
set threshold are low (0).
If the D0~D7or D8~D15 softkey is set to Custom, press the Custom softkey,
then turn the Universal Knob to select the desired value and push down
the knob to confirm.
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