88 Application Programs
Implementation Details
How The MPS Implements The Sequence.
The module is programmed to current List mode.
The module will execute a dwell-paced current List.
The current limit List points are downloaded to the module.
The dwell times are downloaded to the module.
To begin powering the DUT, the module is triggered by the computer. This one trigger causes the current List to begin
executing and the voltage to go to its programmed value.
The module steps through the current limit List.
The module continuously monitors its status.
If the modules goes into CC, the overcurrent protection disables the output.
Module Set Up
Set the current mode to List.
Download current List.
Download the dwell times.
Set the List to be dwell paced.
Enable overcurrent protection.
The initial voltage setting is 0 V.
The module listens for the computer to send a trigger command.
Upon receipt of the trigger command, the module goes to 12 V.
Also upon receipt of the trigger command, the module begins executing its current limit List.
Variations On This Implementation
1. The module could be set to begin applying power in response to an external or backplane TTL Trigger.
2. Multiple modules could be programmed to cycle together in response to the computer trigger command. Each module
could have unique current limits, voltage settings, and dwell times.
3. The module could be set to generate an SRQ if the overcurrent protection disables the output.
4. The module could be set to generate an external or backplane TTL Trigger if the overcurrent protection disables the
output.
5. The in-rush current can be controlled using the current limit settings of the current List. Instead of setting the current
limit slightly above 4 A, it could be set at a much lower value. This would limit the in-rush current to the value in the
List. It would take longer to charge the capacitors on the assembly, but the inrush condition would be controlled. In this
variation, the overcurrent protection could not be used, because you want the module to be in CC.