Atec Anritsu-MG3670 Series - Manual

RADIO COMMUNICATIONS, EMI MEASURING TEST INSTRUMENTS
290 www.anritsu.com For product ordering information, see pages 4-7.
GPIB
For Measuring Signals of Digital Mobile Communication Systems in North America, Europe and Japan
The MG3670B/C, MG3671A/B and MG3672A are digital modulation
signal generators equipped with a high-performance quadrature
modulator. They output the signals needed to develop, test, and
evaluate digital mobile communications equipment and related de-
vices with expansion units.
The MG3670B/C operates from 300 kHz to 2.25 MHz; the
MG3671A/B and MG3672A operate 300 to 2.75 MHz. Both provide
a stable and precise output as well as spectrum purity up to +13
dBm, even with modulation. In addition to testing receiver sensitivity
and excess input, they can be used for testing IF stage performance
and for evaluating device quality. A CMOS-level mode is provided for
I/Q signal input. The input frequency band covers the CDMA spread
spectrum band, expanding the range of applications.
The MG3670C/3671B/3672A can be expanded by rear panel ex-
tension connectors to use for auxiliary signal output functions special
to communication system. MG3670B/C, MG3671A/B and MG3672A
can be used in combination with up to eight modulation units and a
burst function unit simultaneously.
The MG0301C/0302A/0305A/0307A/0311A modulation units have
a continuous data generator capable of generating arbitrarily-pro-
grammable data signals and ITU-T specification PN9/15 stage
PRBS signals. They also have band-limiting filters and can output
I/Q baseband signals.
The MG0303A Burst Function Unit uses the frame and slot config-
uration stipulated by various communication systems and has a
modulation pattern generator function and a function for ramp control
of carrier burst signals. It can also handle data editing and scrambling.
The MG0310A Modulation Unit generates SS + QPSK/OQPSK
modulated (1.2288 Mcps) I/Q baseband signals, supporting the
CDMA system (TIA/EIA/IS-95) used in US Digital Cellular Systems
and the US Personal Communications Service (PCS).
Anritsu-developed DSP and ASIC technology is used in the
MG0310A to achieve superior waveform quality factor ( ρ) and spuri-
ous emission characteristics. Channel multiplexed signals are sup-
ported for both forward and reverse links. With two MG0310A units
mounted in the MG3670C/3671B/3672A, all the test signals required
to conform to TIA/EIA/IS-95, -97, and -98 can be generated.
Simultaneous outputs from the rear extension connectors using long
and short codes, etc., support a wide range of applications including
RF related tests, IF stage performance tests, and device and mod-
ule quality evaluation. (Option 25 is required to install the MG0310A
in the MG3670B/3671A. The auxiliary signal output function is not in-
stalled, so long/short codes cannot be output.)
The MG0312A QPSK Modulation Unit generates QPSK/OQPSK
modulated I/Q baseband signals at 8 high-speed bit rates between
500 kbps and 2.4576 Mbps. Built-in modulation data includes PN7/
PN9/PN15/PN23 pseudorandom patterns. Use over a wide range is
supported by multiple baseband filters and the Phase Encoding func-
tion, which allows modulation data to be voluntarily phase mapped
onto a constellation. At the 2.4576 Mbps rate, the evaluation of trans-
mission section devices and modules can be performed such as RF
power amplifier for CDMA mobile stations.
The MG0314A Modulation Unit generates DS + QPSK modulated
(4.096/1.024 Mcps) I/Q baseband signals, supporting the W-CDMA
system specification. The various test signals required for W-CDMA
system experimentation can be generated by mounting the
MG0314A unit (it shares two slots) in the MG3672A.
DIGITAL MODULATION SIGNAL GENERATOR
MG3670B/C, MG3671A/B, MG3672A
300 kHz to 2.25/2.75 GHz
Communication systems Units
PHS, PDC, PDC_H, MG0301C
NADC, TFTS π/4 DQPSK Modulation Unit
GSM, PCN (DCS1800), MG0302A
CT2 GMSK Modulation Unit
DECT
MG0305A MG0303B
GFSK Modulation Unit Burst Function Unit
PACS, WCPE, PHS
MG0307A
π/4 DQPSK Modulation Unit
TETRA
MG0311A
π/4 DQPSK Modulation Unit
IS-95
MG0310A CDMA Modulation Unit
MG0312A QPSK Modulation Unit
W-CDMA* 1 MG0314A W-CDMA Modulation Unit (only MG3672A)
* 1: Corresponds to the specification for W-CDMA system experimentation
Features
•
Compatible with communication system measurement signals of
Japan, North America and Europe
•
High modulation accuracy ( ≤1.8% rms vector error)
•
Outputs modulation signals suited to each communication system
•
Internal pattern generator with data-editing and scrambling functions
•
Outputs IS-95 channel multiplex signal
•
Outputs W-CDMA channel multiplexes signal (only for MG3672A)
•
Wide range (30 MHz, 3 dB) I/Q Input (only for MG3672A)