User`s guide

3 DC Power Supply Operation
Protection Functions
88 U3606B User’s Guide
Checking the OVP operation
To check OVP operation, raise the regulated output current
slowly. Watch the voltage drawn by the load as it reaches
near the trip point. Then very gradually increase the output
current using the arrow keys until the OVP circuit trips.
NOTE
• After adjusting the OVP value, you can also press [Protect] again to
save the changes made or press [Shift] > [Exit] to discard the changes
made.
• The OVP feature is always enabled by default whenever you select
constant current mode. You can disable the OVP feature by disabling
the output protection state from the Utility menu.
• If the OVP value is set to a lesser value than the OV value, the OV value
will be adjusted to equal the OVP value.
• The OVP value is not applicable for square-wave output.
• The OVP value is limited by the range selected. Press [Shift] > [Range]
to select an appropriate range. You can only select a range when the
output is disabled (the SBY annunciator is illuminated).
Table 3 - 1 CC mode over-voltage protection range and values
Range
Over-voltage protection value
Minimum Maximum
S1 (30 V/1 A) 0 V 33 V
S1m (30 V/100 mA) 0 V 33 V
S2 (8 V/3 A) 0 V 8.8 V
S1S2 (autoranging) N/A
[1]
[1] If the S1S2 (autoranging) range is selected, you will not be able to adjust the OVP
value.
U3606-90054_UG_EN.book Page 88 Friday, July 11, 2014 5:12 PM