Appendix B: Calibration
Series 2200 Programmable DC Power Supplies Reference Manual
B-24
2200S-901-01 Rev. C / March 2016
Check DC overvoltage detection
This check procedure uses the same test setup as the previous procedure. (see
accuracy without remote sense and voltage readback accuracy
(on page B-18))
Ensure the warm-up criteria has been met as described in the Performance Verification Conditions.
1. Set the voltmeter as follows:
a. Set to measure DC volts.
b. Set to auto range.
c. Verify that the Math mX+b function is disabled (shift Dcv), assuring that volts are being read.
2. Set the electronic load as follows:
a. Set to Constant Current.
b. Set to draw 1 Amp.
3. Set the DUT to 100% of the full scale (FS) output current.
4. Set the DUT to 4 V output voltage.
OVP and Max Volt Set are submenus of the Protect menu.
5. Set the DUT OVP (Over Voltage Protection) to ON, set the OVP threshold to 5 V, and turn Max
Volt off as follows:
a. Press
Shift
and
Menu
(
1
).
b. Press the down arrow until
Protect
is shown and press
Enter
.
c. Press the down arrow until
OVP Set
is shown and press
Enter
.
d. Press the down arrow until
On
is shown and press
Enter
.
e. Press
5
and press
Enter
.
f. Press the down arrow until
Max Volt Set
is shown and press
Enter
.
g. Press the down arrow until
Off
is shown and press
Enter
.
h. Press the
Esc
key as needed to exit the menu system.
6. Turn the DUT output on.
During the next step, closely monitor the voltmeter reading. Noting the highest output voltage
achieved before OVP is triggered.
7. Slowly increase the DUT output voltage until OVP is triggered. When triggered, the output voltage
abruptly drops below 1 V, signals with beeps, and OVP is indicated in the display.