Description
Battery-powered products ask a lot of a bench supply. The Rohde & Schwarz NGL201 supply, a high-precision DC unit with one linear channel, covers 0 V to 20 V at up to 60 W. It sources current and it sinks current, so it can play the part of a battery or absorb one. Lost in HCM lists it for rental and sale.
One channel, 60 W, two quadrants
The channel delivers up to 60 W in total. However, its current rating follows the voltage. You get up to 6 A at 6 V or below, and up to 3 A above 6 V. As a result, 20 V at 3 A reaches the full 60 W, while 6 V at 6 A uses only 36 W. Multiply volts by amps for each load, and leave room for start-up surges.
Standing in for a battery
Because the channel can sink current, it works both ways. For example, the Rohde & Schwarz NGL201 supply can feed a device, then take charge back from a pack or an external source. That suits battery simulation, current profiling and source-measure routines. When you emulate a battery, write down the programmed curve, the starting state and the stop conditions. Then another engineer can repeat the run safely.
Linear regulation also helps with sensitive devices, since this type of supply usually leaves less ripple than a switching design. Sink limits still apply, so read the operating manual before you connect anything that supplies energy.
Logging and control links
The unit has standard data logging, remote sensing, USB and LAN. Also, for fast current changes, pick a logging mode and a sample rate that fit the event. Keep the raw data with timestamps, and note any filtering or averaging. If you automate the work, record the interface, the command set and the firmware version too.
Before the first power-up
First, check polarity, grounding and sense connections while the output is off. Next, set the overvoltage, overcurrent and overpower protection to suit the device under test. Then enable the output and watch the voltage, the current and the operating quadrant. Finally, use leads that fit the voltage, the current and any fault level.
Rent or buy the Rohde & Schwarz NGL201 supply
Lost in HCM supplies the instrument, and SMK Vietnam only shows the listing. Therefore, a single project or a trial before purchase suits a rental. Request a rental or purchase quote from Lost in HCM with your dates, delivery city, voltage and current range, interfaces and accessories. The manufacturer order number for this model is 3638.3376.02. Order options and software functions separately when you need them. You can also browse power supplies, visit the Rohde & Schwarz website, or contact SMK Vietnam.
NGL201 questions from test engineers
Why does the current rating change with voltage?
The channel has a 60 W limit. The rating follows voltage: up to 6 A at 6 V or below, and up to 3 A above 6 V.
Can the NGL201 take charge back from a battery?
Yes. It works as a two-quadrant source and sink, within the sink limits in the manual.
What should I send with a rental enquiry?
Send the dates, the delivery location, the voltage and current range, the interfaces, the logging needs and the accessories.
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