Welcome to R&S
NGP800
R&S
®
NGP800
7
Getting Started 5601.5603.02 ─ 05
2
Welcome to R&S
NGP800
The two or four-channel power supply series are based on a primary switched-
mode regulator with power factor correction. This concept allows the instrument
to achieve highest accuracy and lowest residual ripple.
The R&S
NGP800 power supply series feature galvanically isolated, overload and
short-circuit proof outputs. The outputs can be connected in parallel and serial to
achieve higher currents or voltages.
Multi-purpose protection functions, such as overcurrent protection (OCP), over-
voltage protection (OVP) and overpower protection (OPP) can be set separately
for each channel. If the set limit is reached, the affected output channel is auto-
matically turned off and an indicator icon ( , , ) flashes on the display. The
overcurrent protection can also be linked to the other channels. If the current
exceeds the limit on the affected channel, all linked channels will be switched off.
The R&S
NGP800 power supply series are also protected from overheating. Each
channel is equipped with a temperature sensor that monitors the channel operat-
ing temperature for controlling the fan speed and overtemperature protection. If
the safe limit is exceeded, the output of the affected channel is switched off. The
channel must cool down to a defined threshold before the output can be switched
on again. Operations of the other channels are not affected. Also, the actual oper-
ating speed of the fans is monitored. If a fan is not running, e.g. rotor locked con-
dition, all the outputs will be switched off to prevent overheating.
The "Arbitrary" function allows freely definable voltage and current sequences
with a timeframe as short as 1 ms, e.g. to simulate different charging conditions of
a battery. The voltage and current points can also be grouped in different blocks
which can be sequenced and repeated independently to achieve a flexible "Arbi-
trary" function generation.
With the "Ramp" function, the R&S
NGP800 power supply provides the operating
condition to ramp up the supply voltage within a defined timeframe up to 10 s with
1 ms step size and it can be set independently for each channel. Furthermore, the
channels can be sequenced to ramp up the voltage output applied at different
times. With different slew rates and delays between channel outputs, it is easy to
test multi-voltage systems reliability. For the four-channel power supplies, the out-
puts can also be arranged into two independent sub-groups.
The analog input and digital I/O interfaces at the rear panel can be activated with
an option key. The analog input allows you to control the output directly using
