The document describes a universal signal generator called the CS-2500-E that can generate modulated radio signals with a variety of parameters controlled by remote software. It has a digital signal processor that can produce many modulation formats from simple analog to complex digital signals. The generator can be integrated into a higher-level simulator system to create realistic radio environments, with up to 16 emitters controlled by scenario editor software running on a PC.

1. Ministry of Defence
Electronics, Logistics
and Property
Management Co.
Communication Simulator
Development of a universal signal generator:
•Generate modulated radio signals
•Accept real-time audio input
•All of the parameters defined by the
remote control software running on a computer
•The parameter changes can be scheduled and replayed
Modulation sources
Remote control
BITE
Baseband
Radio
DSP
DMU
FCU
FEU
Digital
Signal
Processor
Digital
Modulator
Unit
Frequency
Conversion
Unit
Frequency
Extension
Unit
RF output
CS-2500-E
Audio input
1 - 2500 MHz
1 Hz
-100 - 0dBm
1 dB
CW/SSB/ISB/AM/FM
ASK/FSK/PSK/QAM
PULSE/BURST/DSSS/FHSS
TV/STCK/FDM/TDM/PCS
SINE/NOISE/MORSE/TTY/VFT
VOICE/MODEM/FAX
PRBS/BARKER/ASCII
TCP/IP on TP Ethernet
Internal, Serial, Remote
Control
Basic technical parameters:
Frequency range
Frequency resolution
Output power range
Out power resolution
Modulation formats
Channel Controller Unit (CCU)
The CS-2500-E multifunctional signal generator:
functional block diagram and realisation
The digital modulator
is able to generate
wide variety of
modulation formats
from simple analog
modulations to
multilevel digital
formats with
transmission security
like spectrum
spreading.
Control software package
Higher level system could
be integrated using the
basic signal generator
element. Up to 16 emitters
can be controlled by the
software to produce a
realistic radio electronic
environment at the output
of the simulator.
www.sagax .
www.sagax.hu
Scenario editor (24h with 1sec resolution)
A
A: Audio in from
tape recorder
Control
SW
Control BUS
Control panel
A
#1 RF Channel
RF
#2 RF Channel
Σ
PC
A
Mapware visualisation
#16 RF Channel
Splitter
SUT
Monitor output
for calibration
External RF Source
External Noise Source
Control computer
RF channels
Output stage
Sagax, Ltd.
Sagax, Ltd.
Haller u. 11-13.
1096 Budapest, HUNGARY