Getting Started
R&S
®
NGL200/NGM200
24
User Manual 1178.8736.02 ─ 05
Source and sink current
The R&S
NGL/NGM power supply series are 2 quadrant power supplies which may
both 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 con-
figured in output menu, see
On the display, sink mode is shown as negative current.
4.3.1
Setting the Output Voltage and Current
1. Press [Home] key.
The R&S
NGL/NGM displays the home window.
2. Select voltage or current parameter in the home window.
The R&S
NGL/NGM 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).
4.3.2
Activating the Channels Output
The output voltages can be switched on or off regardless of the operating mode the
instrument is in.
To switch on or off channel output.
1. Select desired channel key ([Ch1] or [Ch2]) on the front panel.
2. Press [Output] key.
The R&S
NGL/NGM outputs the set voltage level on the selected output channel
terminal.
Depending on the mode which the channels are operated in, the followings are
observed:
CR mode
CR mode is a special case of sink mode in which the instrument behaves like a con-
stant resistor. Only in this mode, the respective channel keys and display font color in
the home window turns cyan.
In "normal" sink mode, the colors are the same as in source mode: green if the current
flowing into the R&S
NGL/NGM is below the set current and red if the current is limited
to the set value. The only visible indication of sink mode is the change of the sign of
the current readout change to "Minus".
Trying Out the Instrument
