17 Digital Channels
368 InfiniiVision 7000B Series Oscilloscopes User’s Guide
To switch groups of channels on or off
1 Press the [Digital] key on the front panel if the Digital Channel Menu is
not already displayed.
2 Press the Turn off (or Turn on) softkey for the D15 - D8 group or the D7 - D0
group.
Each time you press the softkey, the softkey’s mode toggles between Turn on
and Turn off.
To change the logic threshold for digital channels
1 Press the [Digital] 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.
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.
Logic family Threshold Voltage
TTL +1.4 V
CMOS +2.5 V
ECL –1.3 V
User Variable from –8 V to +8 V
To Next Page
Loading...
Need help?
General
