User`s guide

Installation 2

Series N6700 User’s Guide 41

Setting the Outputs

Outputs connected together in series cannot be grouped.

To program outputs connected in series, first program the current

limit of each output to the total desired current limit point. Then

program the voltage of each output so that the sum of both voltages

equals the total desired operating voltage. The simplest way to

accomplish this is to program each output to one half of the total

desired operating voltage.

NOTE

The operating mode of each output is determined by the output’s programmed

settings, operating point, and load condition. Because these conditions may

change during series operation, the front panel status indicator will reflect

these changes. This is normal. Momentary status changes are also normal.

Effect on Specifications

Specifications for outputs operating in series can be obtained from

the specifications for single outputs. Most specifications are

expressed as a constant or a percentage (or ppm) plus a constant.

For series operation, the percentage portion remains unchanged

while constant portions or any constants are changed as indicated.

Voltage

All series specifications referring to voltage are twice the single output

specification except for programming resolution, which is the same as for a

single output.

Current All series specifications referring to current are the same as for a single

output except for CC load effect, CC load cross regulation, CC source effect,

and CC short term drift. These are twice the current programming accuracy

(including the percentage portion) at all operating points.

Load Transient

Recovery Time

Load transient specifications are typically twice the single output.

WITH LOCAL SENSING WITH REMOTE SENSING

SENSE

JUMPERS

INSTALLED

LOAD

OUTPUT 1OUTPUT 3

LOAD

SENSE

JUMPER

INSTALLED

TWIST LEADS

+S +LS -LS -S

OUTPUT 1OUTPUT 3

+S +LS -LS -S