Rohde & Schwarz EDST300 User manual

R&S®EDST300
TACAN/DME Station Tester
User Manual
5202912102
Version 02
(Â2éE2)

This manual applies to the following R&S®EDST300 models with software version 4.20 and later:
●R&S®EDST300 (5202.9009.02)
In addition to the base unit, the following options are described:
●R&S®EDST-B2 Low-Power Interrogator (5202.9509.02)
●R&S®EDST-B3 Internal Battery (5202.7187.02)
●R&S®EDST-B6 Additional Trigger Out (5202.9167.02)
●R&S®EDST-K1 TACAN Analysis (5202.9515.02)
●R&S®EDST-K2 Pulse Shape Analysis (5202.9521.02)
© 2023 Rohde & Schwarz GmbH & Co. KG
Muehldorfstr. 15, 81671 Muenchen, Germany
Phone: [phone] - 0
Email: [email protected]
Internet: www.rohde-schwarz.com
Subject to change – data without tolerance limits is not binding.
R&S® is a registered trademark of Rohde & Schwarz GmbH & Co. KG.
All other trademarks are the properties of their respective owners.
5202.9121.02 | Version 02 | R&S®EDST300
Throughout this manual, products from Rohde & Schwarz are indicated without the ® symbol , e.g. R&S®EDST300 is indicated as
R&S EDST300. R&S®EDST-Bxy/-Kxy is indicated as R&S EDST-Bxy/-Kxy.

Contents
R&S®EDST300
3User Manual 5202.9121.02 ─ 02
Contents
1 Safety and regulatory information........................................................7
1.1 Safety instructions........................................................................................................7
1.2 Labels on the product...................................................................................................9
1.3 Warning messages in the documentation................................................................ 10
1.4 Korea certification class A......................................................................................... 10
2 Documentation overview.....................................................................11
3 Welcome to the R&S EDST300........................................................... 12
4 Getting started......................................................................................13
4.1 Preparing for use........................................................................................................ 13
4.2 Instrument tour............................................................................................................20
4.3 Operating basics......................................................................................................... 29
5 Measurement basics............................................................................36
5.1 Evaluating DME signals..............................................................................................36
5.2 Reply efficiency...........................................................................................................37
5.3 RF attenuator...............................................................................................................37
6 Measurements and results..................................................................39
6.1 DME and TACAN measurement mode.......................................................................39
6.2 Graphical pulse analysis............................................................................................ 50
7 Configuring and performing measurements..................................... 57
7.1 Configuring signal input and output......................................................................... 57
7.2 Configuring DME measurements.............................................................................. 68
7.3 Performing pulse analysis......................................................................................... 73
8 Data management................................................................................ 82
8.1 Storing and recalling measurement settings (preset)............................................. 82
8.2 Logging measurement data....................................................................................... 84
8.3 Creating and storing screenshots.............................................................................85
8.4 Obtaining information on open-source resources.................................................. 87
9 General instrument setup....................................................................88
9.1 General settings.......................................................................................................... 88

Contents
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9.2 Setting up a network (LAN) connection....................................................................89
9.3 Obtaining system information................................................................................... 93
9.4 Updating the software................................................................................................ 98
9.5 Activating additional options.....................................................................................99
9.6 Configuring the display and audio output..............................................................100
10 How to perform measurements and analyze pulses with the
R&S EDST300.....................................................................................104
10.1 How to configure signal input and output.............................................................. 104
10.2 How to perform a distance measurement...............................................................105
10.3 How to analyze interrogator pulses........................................................................ 106
10.4 How to set up the R&S EDST300 interrogator........................................................106
10.5 How to analyze pulses graphically..........................................................................107
10.6 How to set up the R&S EDST300 for TACAN measurements................................108
10.7 How to save and load measurement settings........................................................ 109
11 Remote commands for DME/Pulse analysis....................................111
11.1 Configuring remote operation..................................................................................112
11.2 Obtaining instrument information........................................................................... 114
11.3 General instrument setup.........................................................................................118
11.4 Configuring signal input and output....................................................................... 120
11.5 Configuring measurements..................................................................................... 125
11.6 Retrieving results......................................................................................................150
12 Troubleshooting................................................................................. 163
12.1 Contacting customer support..................................................................................163
13 Maintenance, storage, transport and disposal................................164
13.1 Cleaning..................................................................................................................... 164
13.2 Calibration................................................................................................................. 164
13.3 Handling batteries.....................................................................................................164
13.4 Storage.......................................................................................................................165
13.5 Transporting.............................................................................................................. 165
13.6 Disposal..................................................................................................................... 165
Annex.................................................................................................. 167
A References..........................................................................................167

Contents
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B DME channel frequency list.............................................................. 168
C Format description of DME measurement data.............................. 184
List of commands.............................................................................. 190
Index....................................................................................................194

Contents
R&S®EDST300
6User Manual 5202.9121.02 ─ 02

Safety and regulatory information
R&S®EDST300
7User Manual 5202.9121.02 ─ 02
1 Safety and regulatory information
The product documentation helps you use the product safely and efficiently. Follow the
instructions provided here and in the following chapters.
Intended use
The R&S EDST300 is an analyzer designed for installing, testing and servicing pulsed
terrestrial navigation systems like DME and TACAN ground equipment. Use the prod-
uct only for its designated purpose. Observe the operating conditions and performance
limits stated in the data sheet.
Target audience
This document is aimed at installers, technicians and operators of the R&S EDST300.
It assumes the readers are familiar with basic handling of electrical equipment and
have knowledge of avionic navigation systems.
Where do I find safety information?
Safety information is part of the product documentation. It warns you of potential dan-
gers and gives instructions on how to prevent personal injury or damage caused by
dangerous situations. Safety information is provided as follows:
●In Chapter 1.1, "Safety instructions", on page 7. The same information is provi-
ded in many languages as printed "Safety Instructions". The printed "Safety
Instructions" are delivered with the product.
●Throughout the documentation, safety instructions are provided when you need to
take care during setup or operation.
1.1 Safety instructions
Products from the Rohde & Schwarz group of companies are manufactured according
to the highest technical standards. To use the products safely, follow the instructions
provided here and in the product documentation. Keep the product documentation
nearby and offer it to other users.
Use the product only for its intended use and within its performance limits. Intended
use and limits are described in the product documentation such as the data sheet,
manuals and the printed "Safety Instructions". If you are unsure about the appropriate
use, contact Rohde & Schwarz customer service.
Using the product requires specialists or specially trained personnel. These users also
need sound knowledge of at least one of the languages in which the user interfaces
and the product documentation are available.
Reconfigure or adjust the product only as described in the product documentation or
the data sheet. Any other modifications can affect safety and are not permitted.
Never open the casing of the product. Only service personnel authorized by
Rohde & Schwarz are allowed to repair the product. If any part of the product is dam-
Safety instructions

Safety and regulatory information
R&S®EDST300
8User Manual 5202.9121.02 ─ 02
aged or broken, stop using the product. Contact Rohde & Schwarz customer service at
https://www.rohde-schwarz.com/support.
Operating the product
The product is intended for mobile use. The maximum weight of the product is provi-
ded in the data sheet. If the product casing is not waterproof, use an adequate weather
protection to carry the product outdoors with you.
When using the product in a vehicle or aircraft, make sure that the product is properly
secured. If stacking is possible, secure the whole stack of products so that they cannot
fall over and cause injury.
Observe the ambient conditions such as altitude, operating temperature and climatic
loads; see the data sheet.
Due to their exposed location, mobile communications systems are at risk of damage
from lightning. This also poses a risk to persons nearby. Vehicles carrying mobile com-
munications systems require an electrically conductive body, a grounded antenna and
also equipotential bonding that includes the cables routed into the vehicle.
Connecting to power
The product runs on DC voltage. For the specifications of the supply voltage for the
product, refer to the data sheet. Under normal conditions, contact with DC voltage in
this range poses a low risk of electric shock.
Take the following measures for your safety:
●If you connect the product to an external power supply, use one recommended in
the product documentation.
●Before switching on the product, ensure that the voltage and frequency indicated
on the product match the available power source.
●Only use intact cables and route them carefully so that they cannot be damaged.
Also ensure that nobody can trip over loose cables.
Handling batteries safely
The product contains exchangeable or built-in lithium polymer or lithium ion cells or
batteries. The use of the word battery in the following always means all types. Only the
battery contents are potentially hazardous. As long as a battery is undamaged and the
seals remain intact, there is no danger.
Impact, shock or heat can cause damage such as dents, punctures and other deforma-
tions. A damaged battery poses a risk of personal injury. Handle a damaged or leaking
battery with extreme care. Immediately ventilate the area since the battery releases
harmful gases. If you come into contact with the battery fluid, immediately remove all
contaminated clothing. Irritation can occur if the battery fluid comes in contact with your
skin or eyes. Immediately and thoroughly rinse your skin or eyes with water and seek
medical aid.
For safe handling, follow these rules:
●Do not short-circuit the battery.
●Do not mechanically damage the battery. Do not open or disassemble the battery.
Safety instructions

Safety and regulatory information
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9User Manual 5202.9121.02 ─ 02
●Do not expose the battery to high temperatures such as open flames, hot surfaces
and sunlight.
●Only use the battery with the designated Rohde & Schwarz product.
●Only use the appropriate Rohde & Schwarz charger to charge the batteries. If the
batteries are improperly charged, there is a risk of explosion. For charging and dis-
charging temperature ranges, see the product documentation.
●Replace exchangeable batteries only with the same battery type.
●Store the battery in the product or use the product packaging.
●Dispose of exchangeable batteries separately from normal household waste as
specified by the local waste disposal agency.
If you disregard these rules, you risk serious personal injury or even death due to
explosion, fire or hazardous chemical substances. The product documentation pro-
vides further details.
If exchangeable batteries or products with built-in batteries are defective, contact the
Rohde & Schwarz customer service. Rohde & Schwarz classifies the severity of the
defect. When returning batteries or Rohde & Schwarz products containing batteries,
use a carrier qualified to transport dangerous goods and notify the carrier of this classi-
fication. Follow the carrier’s transport stipulations in line with IATA-DGR, IMDG-Code,
ADR or RID.
Using headphones
Take the following measures to prevent hearing damage. Before using headphones,
check the volume and reduce it if necessary. If you monitor varying signal levels, take
off the headphones and wait until the signal has settled. Then adjust the volume.
Meaning of safety labels
Safety labels on the product warn against potential hazards.
Potential hazard
Read the product documentation to avoid personal injury or product damage.
DC - direct current
Connect to a DC power supply of the specified voltage range.
1.2 Labels on the product
Labels on the casing inform about:
●Personal safety, see "Meaning of safety labels" on page 9
●Product and environment safety, see Table 1-1
●Identification of the product, see Chapter 4.2.3, "Device ID", on page 28:
Labels on the product

Safety and regulatory information
R&S®EDST300
10User Manual 5202.9121.02 ─ 02
Table 1-1: Labels regarding product and environment safety
Labeling in line with EN 50419 for disposal of electrical and electronic equipment after the prod-
uct has come to the end of its service life.
For more information, see "Disposing electrical and electronic equipment" on page 165.
Labeling in line with directive 2006/66/EC for disposal of batteries after they have come to the
end of their service life.
For more information, see "Disposing batteries" on page 166.
1.3 Warning messages in the documentation
A warning message points out a risk or danger that you need to be aware of. The sig-
nal word indicates the severity of the safety hazard and how likely it will occur if you do
not follow the safety precautions.
NOTICE
Potential risks of damage. Could result in damage to the supported product or to other
property.
1.4 Korea certification class A
이 기기는 업무용(A급) 전자파 적합기기로서 판매자 또는 사용자는 이 점을 주의하시기
바라며, 가정외의 지역에서 사용하는 것을 목적으로 합니다.
Korea certification class A

Documentation overview
R&S®EDST300
11User Manual 5202.9121.02 ─ 02
2 Documentation overview
This section provides an overview of the R&S EDST300 user documentation. Unless
specified otherwise, you find the documents at:
www.rohde-schwarz.com/manual/EDST300
Further documents are available at:
www.rohde-schwarz.com/product/EDST300
Getting Started manual
Introduces the R&S EDST300 and describes how to set up and start working with the
product. Includes basic operations and general information, e.g. safety instructions,
etc.
A printed version is delivered with the instrument.
User manual
The user manual contains the description of all instrument modes and functions. It also
provides an introduction to remote control, a complete description of the remote control
commands with programming examples, and information on maintenance, instrument
interfaces and error messages. Includes the contents of the getting started manual.
The user manual is also available for download or for immediate display on the Inter-
net.
Data sheet and brochure
The data sheet contains the technical specifications of the R&S EDST300. It also lists
the firmware applications and their order numbers, and optional accessories.
The brochure provides an overview of the instrument and deals with the specific char-
acteristics.
Release notes and open source acknowledgment (OSA)
The release notes list new features, improvements and known issues of the current
firmware version, and describe the firmware installation.
The software makes use of several valuable open source software packages. An open-
source acknowledgment document provides verbatim license texts of the used open
source software.
Application notes, application cards, white papers, etc.
These documents deal with special applications or background information on particu-
lar topics.
See www.rohde-schwarz.com/appnotes.

Welcome to the R&S EDST300
R&S®EDST300
12User Manual 5202.9121.02 ─ 02
3 Welcome to the R&S EDST300
The R&S EDST300 is an analyzer designed for installing, testing and servicing pulsed
terrestrial navigation systems like DME and TACAN ground equipment. Its wide
dynamic range and compact design make the R&S EDST300 ideal especially for wired
and field measurements on DME and TACAN ground stations.
The R&S EDST300 provides high-precision stimulus and analysis functions for DME /
TACAN signals in the frequency range from 960 MHz to 1215 MHz. It performs TX/RX
measurements required for DME und TACAN ground stations in line with the relevant
civil and military standards accurately and efficiently.
The R&S EDST300 can precisely determine characteristic parameters such as peak
power, main delay, reply efficiency, and can decode the identifier of the ground station
to be tested. The instrument also measures the parameters of TACAN stations
(R&S EDST-K1 option) and performs in-depth pulse analysis (R&S®EDST-K2 option).
The modular design of the R&S EDST300 provides a high degree of flexibility to adapt
it to the task at hand. An interrogator (R&S EDST-B2 option) with adjustable output
power (-80 dBm to +30 dBm peak power) is available for distance measurements. An
internal battery (R&S EDST-B3 option) and a test antenna (R&S EDST-Z1 option)
deliver maximum flexibility when carrying out field measurements. Measured data can
be exported to a control system via remote control (LAN), or stored on a USB flash
drive.

Getting started
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13User Manual 5202.9121.02 ─ 02
4 Getting started
●Preparing for use.....................................................................................................13
●Instrument tour........................................................................................................20
●Operating basics..................................................................................................... 29
4.1 Preparing for use
Here, you can find basic information about setting up the product for the first time.
4.1.1 Lifting and carrying
The carrying handle on the side of the instrument is designed to lift or carry the instru-
ment. Do not apply excessive external force to the handle. The maximum weight of the
product is provided in the data sheet.
4.1.2 Unpacking and checking
1. Unpack the product carefully.
2. Retain the original packing material. Use it when transporting or shipping the prod-
uct later.
3. Using the delivery notes, check the equipment for completeness.
4. Check the equipment for damage.
If the delivery is incomplete or equipment is damaged, contact Rohde & Schwarz.
4.1.3 Choosing the operating site
Specific operating conditions ensure proper operation and avoid damage to the prod-
uct and connected devices. For information on environmental conditions such as ambi-
ent temperature and humidity, see the data sheet.
If you operate the product with an external power supply, you can use it indoors only in
pollution degree 2 environments where nonconductive contamination can occur.
See also "Operating the product" on page 8.
Operating altitude
The maximum operating altitude is provided in the data sheet. It differs in battery oper-
ation and operation with an external power supply.
Preparing for use

Getting started
R&S®EDST300
14User Manual 5202.9121.02 ─ 02
Electromagnetic compatibility classes
The electromagnetic compatibility (EMC) class indicates where you can operate the
product. The EMC class of the product is given in the data sheet.
●Class B equipment is suitable for use in:
– Residential environments
– Environments that are directly connected to a low-voltage supply network that
supplies residential buildings
●Class A equipment is intended for use in industrial environments. It can cause
radio disturbances in residential environments due to possible conducted and radi-
ated disturbances. It is therefore not suitable for class B environments.
If class A equipment causes radio disturbances, take appropriate measures to
eliminate them.
4.1.4 Setting up the product indoors
The R&S EDST300 can be operated in various places without detrimental effects on its
features. Even the movement caused by transportation or mobile use does not impair
its functioning.
See also:
●"Intended use" on page 7
4.1.4.1 Placing the product on a bench top
If you want to set up the R&S EDST300 on a benchtop or prepare the R&S EDST300
for mobile use, proceed as follows.
To place the product on a bench top
1. Place the product on a stable, flat and level surface. Ensure that the surface can
support the weight of the product. For information on the weight, see the data
sheet.
2. Always fold the feet completely in or out. With folded-out feet, do not place any-
thing on top or underneath the product.
3. CAUTION! A stack of products can fall over and cause injury. Never stack more
than three products on top of each other. Instead, mount them in a rack.
Stack as follows:
● If the products have foldable feet, fold them in completely.
● It is best if all products have the same dimensions (width and length). If the
products have different dimensions, stack according to size and place the
smallest product on top.
Preparing for use

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15User Manual 5202.9121.02 ─ 02
Left = Stacked correctly, same dimensions
Middle = Stacked correctly, different dimensions
Right = Stacked incorrectly, too many products
4. NOTICE! Overheating can damage the product.
Prevent overheating as follows:
● Keep a minimum distance of 10 cm between the fan openings of the product
and any object in the vicinity.
● Do not place the product next to heat-generating equipment such as radiators
or other products.
4.1.4.2 Mounting the R&S EDST300 in a rack
If you use the product in a vehicle or in aircraft, install it in a rack provided for this pur-
pose. Secure the product safely so that it cannot fall out and hurt passengers when the
vehicle or aircraft is moving.
To prepare the rack
1. Observe the requirements and instructions in "Operating the product" on page 8.
2. NOTICE! Insufficient airflow can cause overheating and damage the product.
Design and implement an efficient ventilation concept for the rack.
To mount the R&S EDST300 in a rack
1. Use an adapter kit to prepare the R&S EDST300 for rack mounting.
a) Order the rack adapter kit designed for the R&S EDST300. For the order num-
ber, see the data sheet.
b) Mount the adapter kit. Follow the assembly instructions provided with the
adapter kit.
2. Lift the R&S EDST300 to shelf height.
3. Grab the handle and push the R&S EDST300 onto the shelf until the rack brackets
fit closely to the rack.
4. Tighten all screws in the rack brackets with a tightening torque of 1.2 Nm to secure
the R&S EDST300 in the rack.
Preparing for use

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16User Manual 5202.9121.02 ─ 02
To unmount the R&S EDST300 from a rack
1. Loosen the screws at the rack brackets.
2. Remove the R&S EDST300 from the rack.
3. If placing the R&S EDST300 on a bench top again, unmount the adapter kit from
the R&S EDST300. Follow the instructions provided with the adapter kit.
4.1.5 Preparing for outdoor usage
If you want to perform a walk test, the R&S EDST300 requires weather protection
because the product casing is not waterproof. Only use the internal battery as a power
supply for outdoor operation.
See also "Operating the product" on page 8.
4.1.6 Considerations for test setup
Cable selection and electromagnetic interference (EMI)
Electromagnetic interference (EMI) can affect the measurement results.
To suppress electromagnetic radiation during operation:
●Use high-quality shielded cables, for example, double-shielded RF and LAN
cables.
●Always terminate open cable ends.
●Ensure that connected external devices comply with EMC regulations.
Signal input and output levels
Information on signal levels is provided in the data sheet. Keep the signal levels within
the specified ranges to avoid damage to the product and connected devices.
4.1.7 Connecting to power
To ensure high mobility and flexibility while using the R&S EDST300, it is equipped
with an internal battery and a DC power supply connector on the rear panel of the
instrument.
DC power can be supplied by one of the following sources:
●The installed battery (R&S EDST-B3)
●The provided DC power supply unit connected to a 230 V AC power supply (for
indoor use only)
●External DC power sources with a voltage of 24 VDC±5%, protected by a 5 A fuse
(Requires R&S EDST-B3)
Do not connect the instrument to available DC networks.
Preparing for use

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17User Manual 5202.9121.02 ─ 02
For safety information, see "Connecting to power" on page 8.
To connect the provided DC power supply
1. Plug the AC power cable of the provided DC power supply unit into a two-pin
power outlet with ground contact.
The green operating LED on the power supply unit lights up.
2. Connect the DC power supply unit to the "POWER supply" connector on the back
of the R&S EDST300 (see Chapter 4.2.2, "Rear panel view", on page 25).
The yellow "Standby" LED on the R&S EDST300 lights up.
To connect an optional external DC power supply
1. If necessary, connect a 12-Volt to 24-Volt DC/DC converter to the DC power sup-
ply. The supported DC range is provided in the data sheet.
2. Connect the DC power supply unit (or the DC/DC converter) to the "POWER sup-
ply" connector on the back of the R&S EDST300 (see Chapter 4.2.2, "Rear panel
view", on page 25).
The yellow "Standby" LED on the R&S EDST300 lights up.
4.1.8 Connecting external devices
Various interfaces for external devices are provided.
●Connecting an antenna...........................................................................................17
●Connecting a suppressor line..................................................................................18
●Connecting a GPS receiver.....................................................................................18
●Connecting an external monitor.............................................................................. 18
4.1.8.1 Connecting an antenna
The standard R&S EDST300 base unit provides two receiving antenna connections
("RF1 IN/OUT", "RF2 IN", see Chapter 4.2.1, "Front panel view", on page 20).
If the interrogator option R&S EDST-B2 is installed on the R&S EDST300, the instru-
ment can also provide HF output to a transmitter antenna via the "RF1 IN/OUT" con-
nector (see also "Antenna connections RF1 IN/OUT and RF2 IN" on page 22).
To connect a receiver antenna
► Connect the receiver antenna to the "RF1 IN/OUT" or the "RF2 IN" interface on the
front panel of the R&S EDST300.
The "RF2 IN" connector provides a higher sensitivity.
For details, see Table 5-1.
Preparing for use

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To connect a transmit antenna
► Connect the transmit antenna to the "RF1 IN/OUT" on the front panel of the
R&S EDST300.
The R&S EDST300 transmitter antenna provides a maximum output of 20 W
(43 dBm).
4.1.8.2 Connecting a suppressor line
Using a bi-directional suppressor line, the instruments in an aircraft send signals to
each other. While a signal is being sent on the suppressor line, no other instrument can
send a signal at the same time. Any receivers are switched off temporarily to avoid
overloading.
► Connect the suppressor line to the "SUPPRESS IN / OUT" interface on the rear
panel of the R&S EDST300 (see Chapter 4.2.2.2, "SUPPRESS IN / OUT connec-
tor", on page 26).
4.1.8.3 Connecting a GPS receiver
You can connect a GPS receiver to the RS232 interface on the rear panel of the
R&S EDST300 (see also Chapter 4.2.2.10, "RS232 GPS interface", on page 28).
If available, the NMEA protocol data provided by the GPS receiver is displayed and
stored with the recorded data.
4.1.8.4 Connecting an external monitor
You can connect an external monitor (or projector) to the "DVI" connector on the instru-
ment's rear panel (see also Chapter 4.2.2.9, "DVI", on page 28). The screen resolu-
tion is always 640x480 pixels.
4.1.9 Activating the TACAN option
The TACAN (Tactical Air Navigation) option R&S EDST-K1 is implemented as a USB
stick. The TACAN stick is linked to the R&S EDST300 unambiguously via the instru-
ment's MAC address. The R&S EDST300 can evaluate TACAN signals only if the
TACAN stick with the TACAN software is inserted in one of the USB ports.
The TACAN stick must be inserted before the R&S EDST300 is switched on. Do not
remove the stick before switching off the R&S EDST300, or else the application is
closed.
When the R&S EDST300 firmware is started, the TACAN functionality is copied from
the stick to the RAM. After the R&S EDST300 is shut down, no TACAN functionality
remains in the instrument.
Preparing for use

Getting started
R&S®EDST300
19User Manual 5202.9121.02 ─ 02
The TACAN stick cannot be used to store data; however, a second USB stick can be
connected simultaneously for data logging.
4.1.10 Switching on or off
The power state is indicated by two LEDs over the "Power" key.
Table 4-1: Overview of power states
Status Left LED Right LED Position of power switch
Off Off Off [0]
Ready
green
[I]
Standby
yellow
[I]
To switch on the product
The product is off but connected to power.
The right power LED is yellow. See Table 4-1.
► Press the [Power] key.
The left power LED lights up green. The product boots.
After the instrument has fully booted, the most recently used measurement mode is
automatically started.
Using the installed battery
If the R&S EDST300 is powered using the internal battery and the batteries become
empty, the instrument switches itself off. You cannot switch it back on until the DC
power supply is connected.
See Chapter 4.1.7, "Connecting to power", on page 16.
To shut down the product
The product is in the ready state.
► Press the [Power] key.
The operating system shuts down. The LED changes to yellow.
To disconnect from power
The product is in the standby state.
The right power LED is yellow. See Table 4-1.
►NOTICE! Risk of data loss. If you disconnect the product from power when it is in
the ready state, you can lose settings and data. Shut it down first.
Preparing for use

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20User Manual 5202.9121.02 ─ 02
Disconnect the product from the power source.
4.2 Instrument tour
4.2.1 Front panel view
This chapter describes the front panel of the R&S EDST300, including all function keys
and connectors.
4 51 23 6 7 8 9
12 11 10
Figure 4-1: Front panel view of the R&S EDST300
1 = Power key (ON / OFF switch) with status LEDs
2 = System keys
3 = TFT Colour Display
4 = Softkeys
5 = RF 2 IN connector
6 = USB interface
7 = Headphone output AF OUT
8 = Voltage supply for external consumers: 12 VDC OUT
9 = RF 1 IN/OUT connector
10 = Navigation controls and general functions
11 = Measurement keys
12 = Keypad
Instrument tour