User`s guide

Installation 2
Series N6700 User’s Guide 39
Grouping the Outputs
Once outputs have been connected in parallel, they can be configured
or “grouped” to act as a single, higher-power channel. This applies
when programming via the front panel or using SCPI commands.
How to group output channels that have been connected in parallel is
discussed in Chapter 4 under “System-Related Operations”.
If you are not grouping output channels, first program both outputs
to the desired output voltage. Then program the current limit point of
each output. The current limit of the paralleled outputs will be the
sum of both individual current limit points.
Effect on Specifications
Specifications for outputs operating in parallel can be obtained from
the specifications for single outputs. Most specifications are
expressed as a constant or as a percentage (or ppm) plus a constant.
For parallel operation, the percentage portion remains unchanged
while constant portions or any constants are changed as indicated
below. For current readback accuracy and temperature coefficient of
current readback, use the minus current specifications:
Current
All parallel specifications referr
ing to current are twice the single output
specification except for programming resolution, which is the same for both
single output and parallel output operation.
Voltage
All parallel specifications referring to voltage are the same as for a single
outpu
t except for CV load effect, CV load cross regulation, CV source effect,
and CV short term drift. These are all twice the voltage programming accuracy
(including the percentage portion) at all operating points.
Load Transient
Recovery Time
Load transient
specifications are typically twice the single output.