Publicité
Les langues disponibles
Les langues disponibles
2 Installation
Current: All parallel specifications referring 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 output 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.
Series Connections
SHOCK HAZARD Floating voltages must not exceed 240 VDC. No output terminal
may be more than 240 VDC from chassis ground.
Only connect outputs that have identical voltage and current ratings in series.
Keysight Models N678xA SMU, N6783A, and N679xA Loads cannot be connected in
series.
To prevent currents from damaging the power analyzer when the load is connected,
always turn series-connected outputs on and off together. Do not leave one output
on while the other is off. Outputs connected together in series cannot be grouped.
You can only use the series-connected outputs in "standard" power supply mode.
You cannot generate arbitrary waveforms, make scope measurements or use data
logging on outputs that are connected in series.
Connecting outputs in series provides a greater voltage capability than can be obtained from a single
output. Because the current is the same through each element in a series circuit, outputs connected in
series must have equivalent current ratings.
The following figures show how to connect two outputs in series to a single load. If voltage drop in the
load leads is a concern, the figure on the right shows how to connect the sense leads directly at the
load (4-wire sensing). . Connecting the +S terminal of output 2 to the -S terminal of output 1 and
connecting a jumper between +S and + on output 2 compensates for the IR drop in the load lead from
output 2 to output 1.
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.
68
Keysight N6705C User's Guide
Publicité
