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Model T940 User Manual
Publication No. 980938 Rev. K
Soft Front Panel Operation 5-62
Astronics Test Systems
Figure 5-31: Current Load
When the channel voltage is greater than the VCOM High level, the Sink current
becomes active. When the channel voltage is less than the VCOM Low level, the
Source current becomes active.
The resistive load to VCOM allows the user to select resistance to the VCOM
High level.
Figure 5-32: Resistive to VCOM Load
The selections for this pull-down control are:
Table 5-62: Resistive Settings
Setting
Description
140
Resistive load set to 140
Ω
151
Resistive load set to 151
Ω
165
Resistive load set to 165
Ω
207
Resistive load set to 207
Ω
240
Resistive load set to 240
Ω
290
Resistive load set to 290
Ω
540
Resistive load set to 540
Ω
1040
Resistive load set to 1040
Ω
Load State
VCOM Low
VCOM High
Sink
Source
Load State
VCOM High
Resistor
Network