In the following examples, Program Commands are used to set, apply and remove UUT power. Since the UUT power combination in this example applies only to the UUT tested by this program, program commands were used rather than System commands. Please note that this section is for reference only. You will not be creating any program commands in your example project.
Program Command |
Performs the Following |
Program Apply UUT Power |
PS1 Set Voltage (28) PS1 Set Current Limit (1.5) PS1 Set Output ON PS2 Set Voltage (5) PS2 Set Current Limit (3.25) PS2 Set Output ONRELAY Close (5) RELAY Close (6) |
Program Remove UUT Power |
PS1 Set Output OFF RELAY Open (5) PS1 Set Voltage (0) PS1 Set Current Limit (0) PS2 Set Output OFF RELAY Open (6) PS2 Set Voltage (0) PS2 Set Current Limit (0) |
In the first example, PS1 and PS2 are programmable power supplies being set to the correct voltage and current limit for a specific UUT. The power supplies' outputs are then turned ON and the outputs are applied to the UUT using a RELAY card.
The second example is a reverse of the first one where the power supplies are removed from the UUT and then reset to 0. Since you probably need to apply and remove power to/from the UUT several times during the program, these Program commands simplify programming and reduce debug and integration time.