Primary/Secondary Front Panel Display; Primary/Secondary Programming Considerations; Output Voltage - Keysight Rp7970 Serie Manuel D'utilisation

4 Using the Regenerative Power System
Front Panel Menu Reference
Select System\Group\Discover
In the dialog box select Discover to discover all secondary
units. Then press Select.
To manually connect the primary unit to all previously discovered secondary units.
Front Panel Menu Reference
Select System\Group\Connect
In the dialog box select Connect to connect all secondary
units to the primary. Then press Select.

Primary/Secondary Front Panel Display

The current value read from the front panel of the primary unit is the aggregate of the values of the
primary and the secondary units. The secondary units return their individual current values.
The following example illustrates the front panel displays during primary/secondary operation. Three
units are connected in in a primary/secondary configuration. The units are operating in voltage priority
mode.
This is the 20 kW primary unit.
"P" indicates the primary unit. The current displayed
(30 A) is the total output current of all paralleled
units. This unit is only contributing 10 A to the total.
This is the 20 kW secondary unit.
"S" indicates a secondary unit. The current displayed
(10 A) is the current that this unit is contributing to
the total.
This is the 20 kW secondary unit.
"S" indicates a secondary unit. The current displayed
(10 A) is the current that this unit is contributing to
the total.

Primary/Secondary Programming Considerations

Program the output voltage and current settings of the primary unit the same as you would an
individual unit. The current limits will reflect the total capacity of the paralleled units. Refer to

Output Voltage

and Set the Output Current
program the settings of the secondary units.
Set both positive and negative current limits high to allow extra headroom for both up- and down-
programming transient dynamics. Transient dynamics are mainly a result of DUT capacitance charging
currents. Note that the primary unit's current limit and current setting are automatically proportioned
among the paralleled group according to the current rating of each unit.
106
SCPI Command
To discover the secondary units:
INST:GRO:PRIM:DISC
SCPI Command
To connect the primary unit to all discovered
secondary units:
INST:GRO:PRIM:CONN
for details. The secondary units are locked; you cannot
Keysight RP7970 & RP7980 Series Operating and Service Guide
Set the