Getting started
R&S
®
NGU
27
User Manual 1179.2531.02 ─ 03
By default, all output channels are turned off when the instrument is switched on to
prevent connected loads from being damaged unintentionally.
During startup, the R&S
NGU is loaded with the last saved instrument settings from
internal memory. See
Chapter 6.18, "Store and recall"
To switch off instrument:
1. Press [Power] key.
All current settings are saved to internal memory and the firmware shuts down.
2. Disconnect the AC power cable from the instrument.
4.3
Trying out the instrument
This chapter describes some basic functions that you can perform with the R&S
NGU.
Source and sink current
The R&S NGU201 is a 2 quadrant source measure unit whereas the R&S NGU401 is a
4 quadrant source measure unit. Both models are able to source and sink current.
When the voltage across the output terminal exceeds the set voltage, current flows into
the instrument.
The default behavior "Auto" can be configured in output menu to set the output operat-
ing mode, see
Chapter 6.2.3.4, "Output mode"
On the display, sink mode is in operation if negative current in shown for NGU201.
However, if both voltage and current are shown as opposite signs (e.g. negative volt-
age and positive current), it indicates that NGU401 is operated in the sink mode. See
also
4.3.1
Setting the output voltage and current
1. Press [Home] key.
The R&S
NGU displays the home window.
2. Select voltage or current parameter in the home window.
The R&S
NGU displays an on-screen keypad to set the value.
3. Enter the required value.
4. Confirm value with the unit key (V/mV or A/mA).
on page 27 for more information on the operating
modes supported in different models.
Trying out the instrument
