User's Manual

24
200Vdc (6010A)
20.0Vdc (6011A)
60.0Vdc (6012B)
500Vdc (6015A)
as read on the DVM.
e. After 30 minutes stabilization, record the temperature to the nearest 0.1°C. Record the output voltage on the DVM.
f. Set oven temperature to 50°C.
g. After 30 minutes stabilization, record the temperature to the nearest 0.1°C. Record output voltage.
h. Check that the magnitude of the output voltage change is no greater than
620mV.(6010A)
80mV (6011A)
176mV (6012B)
1.6V (6015A)
Drift (Stability). Drift is the change in output voltage beginning after a 30-minute warm-up during 8 hours operation with
constant ac input line voltage, constant load resistance and constant ambient temperature. Use a DVM and record the output at
intervals, or use a strip-chart recorder to provide a continuous record. Check that the DVM's or recorder's specified drift during
the 8 hours will be no more than 0.001%. Place the unit in a location with constant air temperature preferably a large forced-air
oven set to 30°C and verify that the ambient temperature does not change by monitoring with a thermometer near the unit.
Typically the drift during 30 minute warm-up exceeds the drift during the 8-hour test. To measure offset drift, repeat the
procedure with output voltage set to 0.10Vdc.
a. Connect DVM between + S and - S.
b. Turn the unit's power-on and turn up current setting to full output.
c. Turn up output voltage to:
200Vdc (6010A)
20Vdc (6011A)
60.0Vdc (6012B)
500Vdc (6015A)
as read on the digital voltmeter.
d. After a 30 minute warmup, note reading on DVM.
e. The output voltage should not deviate more than
77mV (6010A)
9mV (6011A)
23mV (6012B)
190mV (6015A)
from the reading obtained in step d over a period of 8 hours.
Constant Current (CC) Tests
CC Setup. Constant-current tests are analogous to constant-voltage tests, with the unit's output short circuited and the
voltage set to full output to assure CC operation. Follow the general setup instructions on Page 16.
Load Effect (Load Regulation). Constant current load effect is the change in dc output current (Io) resulting from a
load-resistance change from short-circuit to full-load, or full-load to short-circuit. Full-load is the resistance which develops
the maximum rated output voltage at current Io. Proceed as follows:
a. Connect the test equipment as shown in Figure 2-3. Operate the load in constant resistance mode (Amps/Volt) and set
resistance to minimum.
b. Turn the unit's power-on, and turn up voltage setting to full output.
c. Turn up output current to:
5.0Adc (0.050Vdc across Rm) (6010A) Check that the AMPS display reads about 5 amps.
50Adc (0.25Vdc across Rm) (6010A) Check that the AMPS display reads about 50 amps.