GENERAL INFORMATION
1-2
Introduction
The 2050T series Digital and Vector Signal Generators offer a wide range of analog and digital
modulation facilities covering the frequency ranges 10 kHz to 5.4 GHz with three models: 2050T
(10 kHz to 1.35 GHz), 2051T (10 kHz to 2.7 GHz) and 2052T (10 kHz to 5.4 GHz). A dot matrix
display with soft key selected screen options allow flexibility of operation and ease of use. The
output can be modulated by conventional analog methods - amplitude, frequency, phase and pulse
modulation (optional). Digital and vector modulation in PSK, QAM, FSK, GMSK and IQ formats
are available and these signals can be modulated to simulate a faded signal environment.
Microprocessor control ensures that the instruments are flexible and easy to use and allows
programming by the General Purpose Interface Bus (GPIB). The GPIB is designed to IEEE
Standard 488.2 and is a means of sending commands to an instrument, via a data bus, from a
remote controller or personal computer. The instruments can therefore be used manually or as part
of a fully automated test system.
These instruments are suitable for a wide range of applications including the testing of new digital
communication systems.
The 2050T series includes provision for low adjacent channel power in TETRA modulation to
meet the needs of TETRA selectivity measurements.
Main features
The 2050T series provide the following capabilities:
•
Improved adjacent channel power for TETRA
•
Digital and vector modulation capabilities
•
I and Q modulation to 10 MHz
•
Wide carrier frequency range
•
External digital input to 34 ksymbols/sec
•
Excellent accuracy and stability
•
Rician and Rayleigh fading simulation
•
Envelope control for generating RF bursts
•
Internal PRBS source
•
Programmable channel filter characteristics
•
Programmable data rate
•
Pre-programmed standard formats such as NADC (D_AMPS), PDC (JDC), TETRA, TFTS,
APCO 25 (
π
/4 DQPSK), Inmarsat M, VDR, GSM, PCN (DCS1800), CDPD, DSRR, MC9,
MD24-192, Mobitex, Modacom, POCSAG, CITYRUF, ERMES, APCO 25 (4FSK)
•
Full AM, FM,
Φ
M capability
•
Wideband DC coupled FM for FSK
•
IQ baseband outputs
•
Modulated IF