Rohde&Schwarz EB200 User Guide

Miniport Receiver EB200

Portable monitoring from 10 kHz to 3 GHz

• Ergonomic design for on-body
operation

• Continuous frequency range
10 kHz to 3 GHz

• Detection of unlicensed trans­mitters

• Location of close-range to
medium-range targets with the
aid of Handheld Directional
Antenna HE200

• Digital IF section with 12 band­widths (150 Hz to 150 kHz)

• Fast, accurate level indication
across 110 dB dynamic range

•Scanning modes
– Frequency scanning
– Memory scanning

• Frequency spectrum (option)

• IF panorama display (option)

• Remote-controllable via
RS232 CPPP or LAN (Ethernet
10Base-T)

Brief description

Miniport Receiver EB200 with Active
Directional Antenna HE200 is a porta­ble unit for radiomonitoring in the
wide frequency range from 10 kHz to
3 GHz. Whether used for monitoring

In case of power supply interruption,
all the data is stored. Operation can
thus be resumed immediately after the
power supply is restored.

• Location of close-range to medium-

range targets with the aid of Hand­held Directional Antenna HE200

• Detection of undesired emissions
including pulsed emissions

• Detection of unlicensed transmitters
communicating illegally or interfer­ing with licensed transmission

emissions, detecting interference or
locating mini-transmitters irrespective
of their position, EB200 offers features
unrivalled in its class. The favourably
priced and compact receiver with LAN
interface may also be used in compu­ter-based stationary systems.

The EB200 is characterized by high
input sensitivity and frequency setting
accuracy throughout the frequency
range from 10 kHz to 3 GHz.

Its small dimensions and low weight as
well as a sturdy, pickup-proof die-cast
aluminium housing with well-protected
integrated operating elements make
the EB200 ideal for use in places
which cannot be reached with a vehi­cle. Its low power consumption permits
battery operation typically of four
hours. The EB200 battery pack is eas­ily accessible and can be exchanged
quickly.

EB200 fulfils the following tasks:

• Monitoring of given frequencies,

eg storage of 1 to 1000 frequen­cies, squelch setting, constant mon­itoring of one frequency or cyclical
scanning of several frequencies

• Searching in a frequency range
with freely selectable start and stop
frequency and step widths of
1 kHz to 9.999 MHz

EB200 and HE200: ergonomic design for on-body operation

• Protection against tapping by de­tecting miniature spy transmitters
(bugs)

• Monitoring of one's own radio ex­ercises in a service band

• Monitoring of selected transmissions

• Remote-controlled operation via

modem and PC in coverage meas­urement and monitoring systems

2 Miniport Receiver EB200

Digital IF section

The EB200 covers the wide frequency
range from 10 kHz to 3 GHz. Process­ing all signals available with optimum
signal-to-noise ratio requires a large
number of IF bandwidths. This prob­lem cannot be solved by means of
analog filters as space is limited. The
solution is a digital IF section in which
a wide variety of different filters can
be implemented in a relatively small
space with the aid of DSP. The EB200
has 12 IF bandwidths between
150 Hz and 150 kHz. The following
digital demodulators are available:
AM, FM, LSB, USB and CW. If the
receiver is fitted with the IF panorama
option, the number of bandwidths is
increased to 15 up to 1 MHz. Band­widths over 150 kHz are for level and
deviation measurement as demodula­tion is not possible.

Scanning modes

Frequency scanning

It is possible to define a frequency
range to which a complete data set
can be allocated. In addition to
receiver settings, the following scan
parameters may be included in the
data set:

• Step width

• Signal threshold (dBµV)

• Dwell time (s)

• Hold time (s)

• Signal-controlled continuation

• Suppression (individual frequen-

cies or search ranges)

a scanning run. The con­tent of any memory loca­tion can be transferred to
the receiver manually
using the RCL key, by turn­ing the setting knob or
automatically by activat-

DIGI-Scan: Scan mode ...

ing the memory scanning
process.

Frequency spectrum

Fitted with the frequency
spectrum (DIGI-Scan)
option, EB200 scans the
frequency range of interest

... listen mode ...

with digital control and dis­plays the associated spec­trum. Emissions detected
can be seen at a glance.
Aural monitoring of the
information is possible by
simply pressing a softkey.
EB200 then goes to the

... differential mode

DIGI-Scan listen mode. The
stored spectrum is dis­played in the background, and the
emission of interest can be selected
and monitored by marking it with the
frequency cursor.

Location of miniature transmitters at
close range is possible in the differen­tial mode of the DIGI-Scan option. In
this mode, the displayed spectrum is
stored as a reference. Current spectra
are superimposed on the reference

spectrum, and any new signals or var­iations in signal strength are clearly
discernible as peaks. If the measure­ment is made with the distance, the
field strength of transmitters at close
range varies to a greater extent than
that of transmitters located far away.
This differential display ensures fast
and reliable location of miniature
transmitters even in case of spread­spectrum transmission.

Memory scanning

The EB200 uses 1000 definable mem­ory locations. A complete data set,
such as frequency, mode of demodula­tion, bandwidth, squelch level, etc,
can be assigned to each memory loca­tion. The memory content can be
edited or overwritten with the results of

Miniport Receiver EB200 3