To Change The Logic Threshold For Digital Channels; To Reposition A Digital Channel - Agilent Technologies InfiniiVision 5000 Series User Manual

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Digital Channels

To change the logic threshold for digital channels

To reposition a digital channel

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1 Press the [D15-D0] key so that the Digital Channel Menu is displayed.
2 Press the Thresholds softkey
3 Press the D15 - D8 or D7 - D0 softkey, then select a logic family preset or select User
to define your own threshold.
Logic family Threshold Voltage
TTL +1.4 V
CMOS +2.5 V
ECL –1.3 V
User Variable from –8 V to +8 V
The threshold you set applies to all channels within the selected D15 Thru D8 or
D7 Thru D0 group. Each of the two channel groups 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).
If the Thresholds softkey is set to User, press the User softkey for the channel group,
then turn the Entry knob to set the logic threshold. There is one User softkey for each
group of channels.
Press the [D15-D0] key to turn on the digital channels (the [D15-D0] key will illuminate).
On 6000 Series oscilloscopes:
[Select] key in the Digital controls. The selected waveform is highlighted in red. To
position the selected waveform, press up or down on the [Position] key.
On 7000 Series oscilloscopes:
controls until the Select indicator is lit; then, turn the knob. The selected waveform is
highlighted in red. To position the selected waveform, push the knob until the Pos
indicator is lit; then, turn the knob.
To select a waveform, press up or down on the
To select a waveform, push the knob in the Digital
InfiniiVision Oscilloscopes User's Guide