User`s guide

4 - Turn-On Checkout
40
Procedure Display Explanation
6.
Press Enter Number,
8, Enter
VOLT:PROT 8
0.449V 0.145A
Programs the OVP to 8 volts, which is less than the
previously set output voltage.
Because the OVP voltage entered was less than the
output voltage, the OVP circuit tripped. The output
dropped to zero, CV turned off, and Prot turned on.
7.
Press Shift, OV,
Enter Number,
<22>, Enter
VOLT:PROT <22> Programs the OVP to a value greater than the output
voltage setting of the unit. This prevents the OV circuit
from tripping again when the protection condition is
cleared.
8.
Press Shift, Prot Clear
<15.003>V
0.0034A
Clears the protection condition, thus restoring the
output of the unit. Prot turns off and CV turns on.
9.
Press Output on/off
Turn the output off.
10. Connect a jumper wire
across the + and - output
terminals.
Shorts the output of the unit.
11.
Press Output on/off.
0.0005V
<0.3071>A
The CC annunciator is on, indicating that the unit is in
constant current mode. The unit is sourcing output
current at 10% of the maximum rating (the default
output current limit setting).
12.
Press Current,
Enter Number,
<3>, Enter.
0.0452V
<2.998>A
Programs the output current to 3 amperes.
13.
Press Shift, OCP
0.0005V 0.0003A You enabled the overcurrent protection circuit. The
circuit then tripped because the unit was operating in
constant current mode. The CC annunciator turns off
and the OCP and Prot annunciators come on.
14.
Press Shift, OCP
0.0005V 0.0003A You have disabled the overcurrent protection circuit.
The OCP annunciator turns off.
15.
Press Shift, Prot Clear
0.0452V
<2.998>A
Restores the output. The Prot annunciator turns off. CC
is on.
16. Turn the unit off and
remove the shorting wire
from the output terminals.
The next time the unit turns on it will be restored to the
*RST or factory default state.