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AEG Telefunken ← E-1900 ← E-1800/A
Black box VLF-HF monitoring receiver
- help required
E-2000 is a high-end professional
VLF-HF monitoring receiver (SDR)
for the 10 kHz to 30 MHz frequency range, developed around 1995 by
DASA (AEG Telefunken)
in Ulm (Germany). The radio, which is also known as a black box receiver,
has a digital intermediate frequency (IF) strip, based on a
Digital Signal Processor (DSP), and is remote controlled
from an external computer (e.g. PC).
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The device the housed in a 19" 3U enclosure shown in the image on the right.
At the front panel are just two LED indicators: a green one to show that
the device is powered, and a red one that lights up when one of the plug-in
cards is faulty. It is part of the device's self-test feature.
We are currently unable to test the device due to lack of suitable software
and/or documentation. For this reason, this page currently acts as a placeholder
for information about the device. You can help to improve this page by
providing additional information and/or documentation.
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E-2000 can be seen as the black box successor to the E-1800/A. It is the
last monitoring receiver developed by
DASA (AEG Telefunken) before the
company branched out as EADS Racoms (2000) and
was taken over, first by Tadiran (2004) and then by
Elbit Systems (2007).
It is known that the E-2000 was used in Germany, Czech Republic, Switzerland
and probably other countries as well.
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We are urgently looking for further information about this receiver.
Any documentation would be welcome, such as brochures, operating instructions
and technical manuals. We would also like to know how the device was controlled
via the serial port, and/or whether specific PC-based software was
available for it? Are there any further plug-in cards and, if so, how where
they configured? Where was the device used?
If you have any information, please ➤ contact us.
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The E-2000/LH does not have any controls on its front panel. There are only
two LEDs: (1) a green one to show that the device is powered, and (2) a
red one that lights up in case of a self-test (BITE) faillure.
The image below shows the rear side of the receiver,
which has space for 16 plug-in cards. Some of these positions are taken by
mandatory cards, such as the reference oscilator and the CPU,
whilst others have a fixed or flexible assignment. At the
bottom of each card, just above the grip, is a red LED marked BITE. It
lights up in case of a self-test faillure.
The device shown here is an E-2000/LH2 with two complete receivers. Each
receiver consists of an RF front end (RF-2000) and a digital
IF/AF unit (IF-2000). At the far left is the connection to
the mains AC power supply. At the far right are two mandatory modules:
(1) FN-2001 reference oscillator and (2) ST-2000 CPU. The
latter also holds a DB25/F socket with the V.24 interface for connection
of an external computer. At the bottom is a push-button to start the self-test.
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E-2000/LH Family name E-2000/LH1 Single receiver (RF-2000 + IF-2000) E-2000/LH2 Double receiver version (featured here) E-2000/LH3 Triple receiver version E-2000/LH5 Five receiver version (needs different backplane)
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The E-2000 has a so-called built-in test equipment (BITE).
When activated, its tests the internal modules and flags any
failures by lighting up a red LED on the faulty card,
visible at the rear. At the same time, the red LED at the
front panel will light up. To start the self-test, press the
BITE button on the ST-2000 CPU card.
The E-2000 always performs a self-test on power-up.
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Below is the block diagram of a typical E-2000/LH receiver.
As a bare minimum, a receivers consists of an NS-2000 PSU,
an FN-2001 reference oscillator, an ST-2000 CPU, an RF-2000
RF front end and an IF-2000 digital IF/AF unit.
In this configuration it is known as the E-2000/LH1.
It can be expanded with a second receiver (E-2000/LH2) and even
with a third one (E-2000/LH3).
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Digital IF/AF strip
IF-2000
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The IF-2000 digital IF/AF unit, comprises an Analog-to-Digital
Converter (ADC), a Digital Signal Processor (DSP)
— actually 10 DSPs — and a
Pulse-Code Modulation (PCM) Digital-to-Analog Converter (DAC),
all under control of an internal 8085 microprocessor platform,
located on the IF-2000 card itself. This processor is in turn
controlled by the main CPU on the ST-2000 card.
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The E-2000 is housed in a 19 3U enclosure that comprises a power supply unit
(PSU), a backplane and several plug-in modules that are inserted from the rear.
The drawing below shows the device as seen from the rear. There are 16
positions or slots. Slot 1 is always taken by the mains socket,
switch and fuse. The actual power supply unit (PSU) is placed
behind the backplane; fitted to the front panel. Also fixed in place
are the 10 MHz reference oscillator (FN-2001) in slot 14, and the ST-2000
central processing unit (CPU) in slot 15. The latter also holds
the built-in test equipment (BITE) and the V.24 serial port (RS-232)
through which the radio is controlled from a PC.
Apart from the mandatory modules in slots 1, 14 and 15, a minimum configuration
receiver is fitted with one RF unit (RF-2000) and one Intermediate Frequency
(IF) unit (IF-2000). The latter is build around a series of NEC Digitial
Signal Processors (DSPs) in which the demodulation, filtering and audio
processing is implemented entirely in firmware. It directly provides an
AF output.
The E-2000 featured here is fitted with two receivers, i.e. 2 × RF-2000
and 2 × IF-2000 in slots 2/3 and 6/7 respectively.
It was probably used for receiver-diversity reception.
The other slots are free and are shown here in blue.
If necessary, a third receiver can be installed in slots 10/11.
Below is an overview of the various fixed and optional plug-in cards
for the E-2000 receiver. The tick-boxes in the last column indicate
which cards are present in the E-2000 featured here.
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19" 3U frame with backplane
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The device is housed in an 19" 3U aluminium frame.
Behind the front panel is a backplane that runs over the full width of the
receiver. The backplane has 15 multi-pin DIN sockets for plug-in cards,
some of which have one or more coaxial lines. Three slots are dedicated for
RF units (2, 6, 10) and three for IF units (3, 7, 11).
The multi-pin DIN sockets for the plug-in cards are fitted to the backplane
by means of press-fit contacts. For this reason, their contacts are unsoldered.
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The power supply unit (PSU) is not really a plug-in unit, but is a
fixed unit that is mounted to the inside of the front panel, as shown on the
right.
Position 1 at the rear is occupied by the mains socket, the power switch
and the mains fuse.
This position also holds a mains filter and a fairly large fan.
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At least one RF-2000 front end must be present in each E-2000 receiver.
The topology is very similar to the HT-1710 front end of the earlier
E-1800 receivers, but instead of through-hole components it is
largely built with SMD parts, which are
placed at the bottom side.
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Like the earlier E-1800/A, the E-2000 has a fully digital
IF/AF-stage, built around no less than 10 NEC D77P25 Digital Signal
Processors (DSPs). The board has its own 8085 microprocessor and peripherals,
and directly delivers an AF output into a 600Ω load.
The board also holds a Crystal CS5101A ADC and an AD1856 PCM audio DAC.
At least one IF-2000 must be present in each E-2000 receiver. It should always
be placed to the right of the RF-2000 front end.
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The timing signals and reference frequencies for all plug-in cards, are all
generated and distributed by the NS-2001 reference unit, which can be synchronised
externally or internally. In the latter case (default) it uses the internal
10 MHz Oven-Controlled Crystal Oscillator (OCXO),
which protrudes the casing.
The reference module is mandatory and must be installed in slot 14.
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The receiver is controlled by a CPU card that must be fitted in slot 15.
It holds a Motorola MC68302 16-bit microprocessor with RAM and ROM,
and interfaces to the other cards via the backplane. The contents of the Static
RAM are retained by an internal backup battery.
This card also holds the Built-In Test Equipment (BITE) and a V.24 (RS232)
port for controlling the receiver. As the E-2000 does not have any physical
controls on its front panel, the only way it can be controlled is via the V.24
interface.
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Device Monitoring receiver Purpose Surveillance and spectrum monitoring Principle Double conversion Model E-2000/LH2 Manufacturer DASA (AEG Telefunken) 1 Years 1995-1998 Country Germany Users Germany, Czech Republic, Switzerland Frequency 10 kHz - 30 MHz Resolution 1 Hz Memories 1000 Power 115/230V AC ±15%, 50-60 Hz Dimensions 483 × ? × ? mm Weight 15 kg Price US$ 18,000 (1996) [2]
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The receivers were branded Daimler-Benz Aerospace (DASA).
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- Notch filter
- DSP
- BITE
- AGC
- RF Gain
- RS232/RS485
- IF Output
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- Anonymous donor, E-2000/LH2 - THANKS !
Crypto Museum, June 2022.
- Fred Osterman, Shortwave receivers past and present (1945-1996)
Universal Radio Research. Second edition, January 1997. p. 318.
ISBN 1-882123-06-9.
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© Crypto Museum. Created: Monday 03 September 2018. Last changed: Sunday, 20 April 2025 - 07:41 CET.
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