R&S NGL201, NGL202, NGL-K103, NGM-K103, NGM201 Application Note

Application Note

SWITCHING OUTPUTS OF
MULTIPLE DC POWER SUPPLIES
R&S®NGL200 / R&S®NGM200

Products:

► R&S

®

NGL201

► R&S

®

NGL202

► R&S

®

NGM201

► R&S

®

NGM202

► R&S

®

NGL-K103

► R&S

®

NGM-K103

Thomas Lechner | 1GP126 | Version 2e | 06.2020
https://www.rohde-schwarz.com/appnote/1GP126

Rohde & Schwarz | Application Note Switching outputs of Multiple DC Power Supplies R&S®NGL200 /

R&S®NGM200 2

Contents

1 Overview ........................................................................................................ 3

2 Background ................................................................................................... 4

2.1 Prerequisites .......................................................................................................4

2.2 Principle of the synchronization ...........................................................................4

2.2.1 Switching on ........................................................................................................4

2.2.2 Switching off ........................................................................................................4

3 Preparations .................................................................................................. 4

3.1 Connections between the instruments ................................................................4

3.2 Settings ...............................................................................................................5

3.2.1 Device ................................ ................................ ................................ .................5

3.2.2 Channel 1/2 .........................................................................................................7

4 Operation ....................................................................................................... 8

5 Literature ....................................................................................................... 8

6 Ordering Information .................................................................................... 8

Rohde & Schwarz | Application Note Switching outputs of Multiple DC Power Supplies R&S®NGL200 /

R&S®NGM200 3

1 Overview

All channels of DC power supplies R&S®NGL200 and R&S®NGM200 are isolated against the grounding
equipment conductor and against the digital ground of the instrument. Therefore, channels can be connected
in parallel for increasing the current capability, or in series for achieving higher voltages or dual-voltage
supplies. In the case of parallel and serial connections it is usually desired to switch all channels
simultaneously on and off for protecting the supplied circuitry and for avoiding overcurrent on other power
supply channels.

This application note describes how to connect and configure DC power supplies R&S®NGL200 and
R&S®NGM200 for synchronized on and off switching of all channels across multiple power supplies.