-SCS Pulse Card (PGU and PMU) User's Manual Section 4:
4200A-PMU-900-01 Rev. B March 2023 4-5
4200A-SCS power supply limitations
In some system configurations, the 4200A-SCS power supply cannot supply enough current if a test
has too many high-power instruments enabled. Some system configurations may have enough
instruments installed to exceed the power supply limit if the selected test has too many
channels enabled.
Clarius tracks the instruments used in a test and calculates the maximum power required and
compares it to the maximum available power. If the test requires too much power, a message is
displayed and the test will not run.
The following table and the equations below it show how the power is calculated. The maximum
power available for each instrument in the test module is used in the calculation. The 4210-SMU High
Power SMU, 4211-SMU High Power SMU, 4225-PMU Ultra-Fast Pulse Measure Unit, and 4220-PGU
High Voltage Pulse Generator draw the majority of the power in the 4200A-SCS chassis.
There are two parts to the total power supply draw. The first part is the power required for the
instruments while the 4200A-SCS is idle (on, but not testing). The second part is the power required
by the instruments taking part in the test. Note that medium power SMUs (4200-SMUs and
4201-SMUs), 4200 preamplifiers (4200-PAs), and 4210-CVU and 4215-CVU modules are not
included in the equations, as their power draw is not significant.
4200A-SCS power requirements
Instrument Idle power Test power
High Power SMU (4210-SMU or 4211-SMU)
Medium Power SMU (4200-SMU or 4201-SMU)
* There are two channels for each PGU and PMU instrument card.
To Next Page
Loading...
Need help?
General