110 Keysight InfiniiVision HD3-Series Oscilloscopes User's Guide
7 Digital Channels
• Select Descending Order to reorder all channels from higher numbered
channels to lower numbered channels.
• Select Ascending Order to reorder all channels from lower numbered channels
to higher numbered channels.
To change the logic threshold for digital channels
1 Open the Digital dialog box by selecting the digital channels badge or by
choosing Sources > Digital Channels....
2 In the Thresholds tab:
Use the D15 - D12, D11 - D8, D7 - D4, and D3 - D0 drop-down lists to select a
logic family preset or select User to define your own threshold.
The threshold you select applies to all channels within the selected D15 - D12,
D11 - D8, D7 - D4, or D3 - D0 group. Each channel group can be set to a different
threshold if desired.
Values greater than the set threshold are high (1) and values less than the set
threshold are low (0).
To display digital channels as a bus
Digital channels may be grouped and displayed as a bus, with each bus value
displayed at the bottom of the display in hex or binary. You can create up to two
buses.
Logic family Threshold Voltage
TTL +1.4 V
CMOS +2.5 V
ECL –1.3 V
User Variable from –8 V to +8 V
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