Section 3: Performance Verification
Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification
3-12
077102700/ July 2014
Number Item
Minimum requirements
Example
10
Load resistor for voltage
noise testing
Loading resistors for high current in voltage
mode and high voltage in current mode.
All resistors should be rated for at least 50 W.
Ohms tolerance within 5%. Resistor composition
is not critical. To perform the tests as illustrated,
both leads of the load resistor require a banana
plug/jack (or equivalent) to connect to the power
supply.
CH1
12 Ω.
Vishay/Dale
RH05012R00FE02
CH2
12 Ω.
Vishay/Dale
RH05012R00FE02
CH3
2.5 Ω.
Vishay/Dale
RH05012R00FE02
11
Load resistor for current
noise testing
1 Ω, 100 W, 5%
To perform the tests as illustrated, both leads of
the load resistor require a banana plug/jack (or
equivalent) to connect to the power supply.
Vishay/Dale
HL10006Z1R000JJ
12
Oscilloscope
20 MHz bandwidth-limited oscilloscope at 1
mV/division.
Tektronix DPO3012
13
Oscilloscope probe Low capacitance 1 MΩ/10 MΩ 1X/10X 6
MHz/200MHz probe.
Tektronix P2220, 1X probe
14
Oscilloscope probe Low capacitance 10 MΩ 500 MHz probe Tektronix P6139A, 10X
15
Coaxial cable 50 Ω BNC, male-to-male. Tektronix part number:
012-0482-00
16
BNC adapter BNC female to banana breakout.
Pomona Electronics 3073
Self Test
This procedure uses internal routines to verify that the DUT functions and passes its internal
self-tests. No test equipment or connections are required.
1. Disconnect all cables from the DUT outputs.
2. Power on the DUT. The front-panel display will light up briefly while the DUT performs its
power-on self test. All the display annunciators will light up at once.
3. Review the display with all the annunciators. Visually check if there are any strokes lost on any
annunciator.
