4: Pulse card concepts Model 4200A-SCS Pulse Card (PGU and PMU)
4-6 4200A-PMU-900-01 Rev. B March 2023
Equations to calculate power:
PowerIDLE = [(29.4 * nPGU) + (50.4 * nPMU) + (4.2 * nRPM)]
PowerTEST = [(45 * nHPSMU) + (8.4 * nC10) + (54.6 * nC40)]
PowerTOTAL = PowerIDLE + PowerTEST
PowerTOTAL = 500 maximum. If PowerTOTAL is less than or equal to 500, the test proceeds.
Where:
• nPGU = number of 4220-PGU cards in the 4200A-SCS chassis (idle power draw)
• nPMU = number of 4225-PMU cards in the 4200A-SCS chassis (idle power draw)
• nRPM = number of 4225-RPM modules connected to PMUs (idle power draw)
• nHPSMU = number of High-Power SMUs (4210-SMUs or 4211-SMUs) in the test
• nC10 = number of 10 V PGU or PMU channels in the test
• nC40 = number of 40 V PGU or PMU channels in the test
Example 1: 4200A-SCS with two 4210-SMUs or 4211-SMUs, four 4225-PMUs, and eight 4225-RPMs.
The test uses all eight PMU+RPM channels set to the 10 V range (no SMUs in test).
PowerIDLE = [(29.4 * nPGU) + (50.4 * nPMU) + (4.2 * nRPM)] = [(29.4 * 0) + (50.4 * 4) + (4.2 * 8)]
= 201.6 + 33.6 = 235.2
PowerTEST = [(45 * nHPSMU) + (8.4 * nC10) + (54.6 * nC40)] = [(45 * 0) + (8.4 * 8) + (54.6 * 0)]
= 67.2
PowerTOTAL = PowerIDLE + PowerTEST = 235.2 + 67.2 = 302.4
This test has PowerTOTAL ≤500, so this test will proceed.
Example 2: 4200A-SCS with two 4210-SMUs or 4211-SMUs, four 4225-PMUs, and eight 4225-RPMs.
The test uses five PMU+RPM channels set to the 40 V range (no SMUs in test).
PowerIDLE = [(29.4 * nPGU) + (50.4 * nPMU) + (4.2 * nRPM)] = [(29.4 * 0) + (50.4 * 4) + (4.2 * 8)]
= 201.6 + 33.6 = 235.2
PowerTEST = [(45 * nHPSMU) + (8.4 * nC10) + (54.6 * nC40)] = [(45 * 0) + (8.4 * 0) + (54.6 * 5)]
= 273
PowerTOTAL = PowerIDLE + PowerTEST = 235.2 + 273 = 508.2
This test has PowerTOTAL >500, so this test will not proceed. Reduce the number of PMU+RPM
channels that are set to the 40 V range to less than five.
The following table shows the 4200A-SCS power requirements for valid combinations for the
4225-PMU, 4225-RPM, and high-power SMU.
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