DCA077534
CAE030387
Rev. B | 08.10.17
Only one jumper
per voltage header
is allowed
5
Operating Instructions
Local Load Stepping
Local Load Stepping jumpers allows the loading of each of the six VPX power supplies independently. One jumper is
provided for each header to ensure that only one step is set at a time for each supply header. Table 3 below provides all the
load values at each header location when the jumper is placed on it.
VPX Voltage
Name
OFF
Jumper
10W
Jumper
20W
Jumper
30W
Jumper
40W
Jumper
50W
Jumper
Vs1+12V
0W
10W
20W
30W
40W
50W
Vs2+12V
0W
10W
20W
30W
40W
50W
Vs3+5V
0W
10W
20W
30W
40W
40W
OFF
Jumper
2W
Jumper
4W
Jumper
+12V_Aux
0W
2W
4W
4W
-12V_Aux
0W
2W
4W
4W
OFF
Jumper
1W
Jumper
2W
Jumper
3.3V_Aux
0W
1W
2W
2W
Table 3
For example, to set a load of 30W on voltage Vs1= +12V, first locate the header next to silkscreen marking Vs1 +12V. Then
insert the jumper in the location labeled 30W. If no load is needed on the voltage Vs1 +12V then the jumper should be
inserted in the location labeled OFF.
Warning: Placing multiple jumpers on any header can damage the electronic load.
Header
Only one jumper
per voltage header
is allowed
Only one jumper
per voltage header
is allowed
Figure 3
