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Copyright © 2007-2013 Pico Technology Ltd. All rights reserved.psw.en r32
Set Thresholds
Choose the digital threshold voltage from the drop-down list, or select the Custom
threshold and set your own voltage using the numeric entry control. The preset
thresholds are:
TTL:
CMOS:
ECL:
PECL:
LVPECL:
LVCMOS 1.5 V:
LVCMOS 1.8 V:
LVCMOS 2.5 V:
LVCMOS 3.3 V:
LVDS:
0V Differential:
1.5 V
2.5 V
-1.3 V
3.7 V
2 V
750 mV
0.9 V
1.25 V
1.65 V
100 mV
0 V
Each port has its own
independent threshold. Port
0 contains channels
D7...D0 and Port 1 contains
channels D15...D8.
Available Channels
This section lists the available digital input channels. They will not be displayed unless
you add them to the Channels and Groups for Display section of the dialog. Click
and drag individual channels into the Channels and Groups for Display section, or
select a range of channels and drag them all at once, or double-click a channel to add
it directly.
Channels and Groups for Display
This section lists the digital channels that have been selected for display. Any groups
of channels that you have defined will also be listed here.
indicates a digital channel.
indicates a group of digital channels. By default, channels added to a group
are placed with the most significant bit at the top of the list.
To rename a channel or group, click the name and type. For other operations,
right-click the channel or group for a menu of actions:
Enable: Show the channel. All channels in the list are
enabled by default.
Disable: Hide the channel from display.
Invert: Reverse the polarity of this channel. Useful for
active-low signals.
Rename: Type a new name for the channel.
Reverse Channel Order: (Groups only) Reverse the order of channels in the
group.
Remove: Remove channel from the list.