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Publication No. 980938 Rev. K
Model T940 User Manual
Astronics Test Systems
Soft Front Panel Operation 5-61
Over-Current Alarm Levels
This allows the user to set the over-current high (
OC High (mA)
) and over-
current low (
OC Low (mA)
) alarm levels for static current limits on the DR3e,
DR9, and UR14 (see
Drive Fault
for dynamic current limiting). When the driver
current exceeds the level, an over-current signal will be generated.
The range for
OC High
is from 0 (disable over-current monitor) to 800.
The range for
OC Low
is from 0 (disable over-current monitor) to -800.
The relevant VXI
plug&play
API function is:
•
tat964_setChannelSourceParameters
Active Load
Depending on the installed Driver/Receiver board, the user can chose one of
several programmable or selectable loads.
The selections for this pull-down control are:
Table 5-61: Active Load Settings
Setting
Description
None
No active load
Current
Programmable current load
Resistive to VCOM
Selectable resistive load
Resistive to VCC
Fixed resistive load
Resistive to GND
Fixed resistive load
Resistive to VCC+GND
Fixed resistive load
The programmable current load allows the user to specify a source and sink
current load and a commutating voltage (VCOM).
Note: VCC=3.3V for the DR1.