Anritsu MG3670B Data Sheet

RADIO COMMUNICA TIONS TEST INSTRUMENTS

236

GPIB

The MG3670B/C, MG3671A/B is a digital modulation signal genera­tor equipped with a high-performance quadrature modulator. It out­puts the signals needed to develop, test and evaluate digital mobile
communications equipment and related devices with expansion units.
The MG3670B/C, MG3671A/B covers the frequency range from 300
kHz to 2.25 GHz (MG3670B/C)/300 kHz to 2.75 GHz (MG3671A/B),
and provides a stable and precise output as well as spectrum purity
up to a maximum output of +13 dBm, even with modulation. In addi­tion to testing receiver sensitivity and excess input, it 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 and MG3671B are expanded applications by rear
panel extension connectors to use for auxiliary signal output function
special to communication system. MG3670B/C and MG3671A/B can
be used in combination with up to seven 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-program­mable data signals and ITU-T specification PN9/15 stage PRBS sig­nals, as well as band-limiting filters, and they can output I/Q base­band signals.
The MG0303A Burst Function Unit uses the frame and slot configu­ration 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 spurious emis­sion characteristics. Channel multiplexed signals are supported for
both forward and reverse links.
With two MG0310A units mounted in the MG3670C/3671B, all the
test signals required to conform to TIA/EIA/IS-95, -97 & -98 can be
generated. Simultaneous outputs from the rear extension connectors
using long & short codes, etc., support a wide range of applications
including RF related tests, IF stage performance tests, and device
and module quality evaluation. (Option 25 is required to install the
MG0310A in the MG3670B/3671A. The auxiliary signal output func­tion is not installed, so long/short codes cannot be output.)

The MG0312A QPSK Modulation Unit generates QPSK/OQPSK
modulated I/O baseband signals at 8 high speed bit rates between
500 kbps and 2.4576 Mbps. Built in modulation data includes NP7/
PN9/PN15/PN23 pseudorandom patterns. Use over a wide range is
supported by multiple baseband filters, and the Phase Encoding
function which allows modulation data to be voluntarily phase mapped
onto a constellation.
At the 2.4576 Mbps bit rate, the evaluation of transmission section
devices and modules can be performed such as RF power amplifier
for CDMA mobile station.

DIGIT AL MODULATION SIGNAL GENERATOR

MG3670B/C, MG3671A/B

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, CT2

MG0302A
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

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 systems

•

Internal pattern generator with data-editing and scrambling functions

•Outputs IS-95 channel multiplex signal

237

RADIO COMMUNICA TIONS TEST INSTRUMENTS

6

Basic performance

•I/Q signal I/O over broad frequency range

A quadrature modulator is built in, and external I/Q signals can be in­put to enable use with a variety of digital modulation modes, includ­ing QPSK, 8PSK and M16QAM. The modulation band for I/Q input
signals is broad, covering the CDMA spread spectrum bandwidth.
Further, by adding an expansion unit, I/Q signal output can be ob­tained from the internal data generator. Either 50 Ω or CMOS-level
compatibility can be selected for I/Q signals. Functions for adjusting
the level balance, offset and phase are also provided for greater util­ity in evaluating modulators/demodulators and other devices.

Output level frequency characteristics

(50 Ω/0.5 Vrms mode)

30 k 100 k 300 k 1 M 10 M3 M

0

–1

–2

–3

Level (dB)

I/Q signal input frequency (Hz)

Frequency response for I/Q external modulation (typical values)

•Excellent spectral purity

The SSB phase noise characteristic is an excellent –120 dBc/Hz or
less (100 kHz offset). The adjacent channel power characteristic ex­cels as the interference signal source during modulation.

SSB phase noise at 1.9 GHz

•Large output level

Through use of new AGC circuitry, the MG3670B/C, MG3671A/B
produces a highly precise output at levels down to –143 dBm with
stable frequency characteristics, not only for output of unmodulated
signals, but also with π/4 DQPSK modulation accompanied by ampli­tude fluctuations, and when outputting burst signals. The MG3670B/C,
MG3671A/B can generate a high output level of up to +13 dBm over
a broad range of frequencies, so amplifiers are not needed even
when testing receivers for excess input, and in testing other devices.

Output level accuracy at 1.9 GHz

•High modulation accuracy

A vector error of less than 1.8%rms is assured for output levels up to
+5 dBm over the entire operating frequency range. This high modu­lation accuracy is also achieved when the expansion units are used.
Even when the MG0301C and MG0303B units are installed and π/4
DQPSK modulation burst signals are generated, the vector error is
less than 1.8%rms. The MG3670B/C, MG3671A/B enables measure­ment and quality evaluation of receivers and other devices with more
than adequate precision.

Functions and performances with expansion unit

• Frame structure and data

TDMA

The MG0303B incorporates TDMA frames for various kinds of com­munication systems, as well as modulation patterns for each time
slot.
Modulation patterns for device evaluation and for up/down commu­nication channels are provided, and are output at the timing required
by the system. Hence the MG3670B/C, MG3671A/B can generate the
burst signals needed to measure various digital communication sys­tems.
Time slots specified for different communication systems can be se­lected freely. There is considerable freedom in choosing the modula­tion pattern within slots; either a PN9 or PN15 TCH segment can be
chosen, and part of the data outside the TCH segment can be edited.
The pattern memory function can be used to store and recall patterns.
A data scrambling function is provided as standard, and any initial
code can be set permitting more sophisticated evaluations and diag­nostics using the MG3670B/C, MG3671A/B as a supposed base sta­tion and mobile equipment.
The internal modulation pattern can also be driven by an external
clock, so margin tests can be conducted by varying the clock pulse.

RADIO COMMUNICA TIONS TEST INSTRUMENTS

238

Pattern edit display

CDMA

MG0310A has various TIA/EIA/IS-95 frame format and encoder
functions built-in for each channel types. For example, frame format
of signalling, communication and Multiplex Option 1 are provided to
support Rate Set 1 (1200 ... 9600 bps) and Rate Set 2 (1800 ...
14400 bps) for the Traffic Channel. In combination with the Burst
Randomizer function, this allows system support at all rates, even for
reverse links. For internal data you can select either a PN7, 9 or 15
pseudo-random pattern, or a user settable 16-bit data repeating pat­tern, all fully editable. Operation can be from internal RAM user-de­finable sequence data or from external serial data.

Pattern setting display

• Excellent leakage power characteristics during carrier-off

The rising and falling edges of burst signals have a gentle waveform
with a duration equivalent to two symbols, and the leakage power
during carrier-off characteristics are excellent.

PHS

Slot rise time waveform

• Superior spurious emission characteristics

Spurious emissions are guaranteed to be lower than –60 dBc (±900
kHz detuning, 30 kHz bandwidth) and –70 dBc (± 1.98 MHz detuning,
30 kHz bandwidth) with MG0310A installed in the MG3670C/3671B
mainframe (for output level: 0dBm, baseband filter: SPEC 2). Using
this baseband filter gives a waveform quality factor (ρ) of 0.999 or
better. This filter conforms to IS-95, providing 3-step switching.
Selecting the best step for each evaluation item gives even higher
performance. This excellent basic performance in a standard digital
modulation signal generator makes it the ideal choice for the devel­opment and manufacture of digital mobile wireless equipment and
related devices/modules.

Modulation spectrum
(with MG0310A installed in the MG3670C/3671B)

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RADIO COMMUNICA TIONS TEST INSTRUMENTS

6

Specifications (refer to the MG3670B/C, MG3671A/B data sheet for more details.)

•MG3670B/C, MG3671A/B Digital Modulation Signal Generator

Frequency range 300 kHz to 2250 MHz (MG3670B/C), 300 kHz to 2750 MHz (MG3671A/B)
Accuracy Depends on installed reference oscillator

*

1

Frequency: 10 MHz

Carrier Internal reference Start-up characteristics: ≤1 x 10

–7

/day (after 30-min. warm-up), ≤5 x 10–8/day (after 60-min. warm-up)

frequency oscillator Aging rate: ≤2 x 10

–8

/day (after 24-h warm-up)

Temperature characteristics: ≤±5 x 10

–8

(0˚ to 50˚C)

External reference
input

10 MHz or 13 MHz (±10 ppm), 2 to 5 Vp-p, BNC connector (rear panel)

Reference output 10 MHz, 2 to 5 Vp-p, BNC connector (rear panel)
Level range –143 to +13 dBm (resolution: 0.1 dB)
Frequency response ≤±1 dB (at 0 dBm output)

Output level/frequency ≤1000 MHz >1000 MHz

Level accuracy

–33 to +13 dBm ±1 dB ±2 dB
–123 to –33.1 dBm ±1.5 dB ±2 dB

Output –136 to –123.1 dBm ±3 dB ±4 dB

Impedance 50 Ω, N-type connector
Continuously Continuously variable output over 20 dB range (+8 to –12 dB) in 0.1 dB steps within upper and lower limits of any

variable level output level
Level unit dBm, dBµ, µV, mV, V (dBµ , µ V, mV, V selected terminate/open voltage display)
Interference ≤1 µV *Measured 25 mm from cabinet (except rear panel) with two-turn 25 mm diameter loop antenna, terminated

radiation with 50 Ω load, ≤+5 dBm output, carrier wave
Spurious

≤–65 dBc (≥100 kHz offset, ≤±100 MHz bandwidth), ≤–50 dBc (≥100 kHz offset, full band),

Signal purity

≤–40 dBc [spurious of (5.4–Fout) GHz at ≥2.65 GHz], ≤–30 dBc (harmonics)
SSB phase noise ≤–120 dBc/Hz (100 kHz offset, carrier wave)
Internal modulation Depends on installed modulation unit (MG0301C/0302A/0305A/0307A/0310A/0311A/0312A)

Any modulation using I/Q input signal

Digital External

Input frequency: DC to 1.2 MHz

*

2

modulation modulation Input level: √ I2± Q2≤0.5 Vrms, BNC connector *I/Q ≤1.5 Vp-p (50 Ω), I/Q ≤10% to 100% of 1.5 Vp-p (CMOS)

Vector error: ≤1.8%rms (I/Q input level: 1 Vrms/50 Ω, at ≤+5 dBm output)
I/Q output Outputs I/Q signal at internal modulation (MG0301C/0302A/0305A/0307A/0310A/0311A/0312A installed)

Pulse

Input TTL level, BNC connector, polarity selectable

modulation

On/off ratio ≥40 dB (at ≥0 dBm output)
Transition time ≤2 µs, minimum pulse width: 10 µs

Memory

Frequency memory 1000 carrier frequencies (save and recall)

function

Parameter memory 100 panel settings (save and recall)
Relative display Carrier frequency, output level
I/Q signal adjustment

Offset, balance, phase (only output) of I/Q input/output signal

Other Backup Last settings stored at power-off
functions

Reverse power
protection

Maximum reverse input power: 50 W (<1000 MHz), 25 W (≥1000 MHz), ±50 V (DC)

GPIB

All functions except power switch and panel lock switch controlled

Interface function: SH1, AH1, T6, L4, SR1, RL1, PP0, DC1, DT0, C0, E2

Operating temperature 0˚ to 50˚C
Power 100 to 120/200 to 240 Vac (switchable), 47.5 to 63 Hz, ≤550 VA
Dimensions and mass (426±5) W x (221.5±4) H x (451±5) D mm, ≤27 kg

EMC

*

3

EN55011: 1991, Group 1, Class A

EN50082-1: 1992

Safety EN61010-1: 1993 (Installation Category ΙΙ, Pollution Degree ΙΙ)

*

1: Internal reference oscillator accuracy: 2 x 10–8/day (23˚ ±5˚C), calibrated after 24-h operation

*

2: Refer to the “Frequency response for I/Q external modulation (typical value)” on page 237 for the input frequency range. Typical values are given for refer-

ence only to assist in the use of this instrument, and are not guaranteed specifications.

*

3: Electromagnetic compatibility

MG0301C π /4 DQPSK Modulation Unit (incorporated in the MG3670B/C, MG3671A/B)

Applicable communication
system

PDC, PDC_H, PHS, NADC, TFTS

Modulation system π/4 DQPSK
Vector error I/Q signal: ≤1.5%rms (at 1 Vrms/50 Ω output), RF signal: ≤1.8%rms (at ≤+5 dBm output)

Internal modulation data

Pseudorandom pattern: PN15, PN9
Free 4-bit repetition pattern (ex: 1010, 1111)

DATA CLOCK: Covering ±5% of bit rate

External modulation data

DATA: Digital data synchronized with DATA CLOCK
SYMBOL CLOCK: Clock specified by DATA synchronized with DATA CLOCK
TTL level, BNC connector, polarity selectable

Continued on next page

RADIO COMMUNICA TIONS TEST INSTRUMENTS

240

Selectable 50 Ω or CMOS (600 Ω), BNC connector

I/Q signal output

50 Ω setting: 1 Vp-p ±2% (modulation data: 0000, TFTS: 1111)
CMOS setting: Variable in 10% steps over range of 10% to 100% of 1 Vp-p ±2%

Variable offset voltage; 0 to 4 V (1 mV steps)

Carrier frequency range: 300 kHz to 2250 MHz

*1 (incorporated in the MG3670B/C), 300 kHz to 2750 MHz (incorporated in the MG3671A/B)

PDC, PDC_H Bit rate: 42 kbps

Baseband filter: Root Nyquist (α = 0.5), Nyquist (α = 0.5)
Carrier frequency range: 1 to 2250 MHz

*1 (incorporated in the MG3670B/C), 1 to 2750 MHz (incorporated in the MG3671A/B)

PHS

Bit rate: 384 kbps
Baseband filter: Root Nyquist (α = 0.5), Nyquist (α = 0.5)
Adjacent channel leakage power ratio: ≤–74 dB (600/900 kHz offset, ±96 kHz band, ≥10 MHz)

*

2

Carrier frequency range: 300 kHz to 2250 MHz

*1 (incorporated in the MG3670B/C), 300 kHz to 2750 MHz (incorporated in the MG3671A/B)

NADC Bit rate: 48.6 kbps

Baseband filter: Root Nyquist (α = 0.35), Nyquist (α = 0.35)
Carrier frequency range: 300 kHz to 2250 MHz

*1 (incorporated in the MG3670B/C), 300 kHz to 2750 MHz (incorporated in the MG3671A/B)

TFTS Bit rate: 44.2 kbps

Baseband filter: Root Nyquist (α = 0.4), Nyquist (α = 0.4)

*

1: The upper frequency is limited by the specifications of the main frame in which this unit is installed.

*

2: Applicable when this unit is installed in MG3670B/C, MG3671A/B.

Not applicable when this unit is installed in MG3670A.

MG0302A GMSK Modulation Unit (incorporated in the MG3670B/C, MG3671A/B)

Applicable communication system

GSM, DCS1800 (PCN), CT2

Modulation system GMSK

I/Q signal: ≤1˚ rms, ≤3˚ peak (at 1 Vrms/50 Ω output, 25˚ ±5˚C, after 30 min. warm-up)

Phase error

≤2˚ rms, ≤5˚ peak (at 1 Vrms/50 Ω output)

RF signal: ≤1˚ rms, ≤3˚ peak (at ≤+5 dBm output, 25˚ ±5˚C, after 30 min. warm-up)

≤2˚ rms, ≤5˚ peak (at ≤+5 dBm output)

Internal modulation data Pseudorandom pattern: PN15, PN9, free 4-bit repetition pattern (ex: 1010, 1111)

DATA CLOCK: Covering ±5% of bit rate

External modulation data DATA: Digital data synchronized with DATA CLOCK

TTL level, BNC connector, polarity selectable
Selectable 50 Ω or CMOS (600 Ω), BNC connector

I/Q signal output

50 Ω setting: 1 Vp-p ±2% (modulation data: 0000)
CMOS setting: Variable in 10% steps over range of 10% to 100% of 1 Vp-p ±2% (modulation data: 0000)

Variable offset voltage; 0 to 4 V (1 mV steps)

Carrier wave frequency range:

1 to 2250 MHz

*1 (incorporated in the MG3670B/C), 1 to 2750 MHz (incorporated in the MG3671A/B)

GSM/PCN (DCS1800)

Bit rate: 270.833 kbps
Baseband filter: Gaussian filter BbT = 0.3

Carrier wave frequency range:

CT2

300 kHz to 2250 MHz

*1(incorporated in the MG3670B/C), 300 kHz to 2750 MHz (incorporated in the MG3671A/B)
Bit rate: 72 kbps
Baseband filter: Gaussian filter BbT = 0.5

*

1: The upper frequency is limited by the specifications of the main frame in which this unit is installed.

MG0305A GFSK Modulation Unit (incorporated in the MG3670B/C, MG3671A/B)

Applicable communication system

DECT

Modulation system GFSK
Vector error I/Q signal: ≤12 kHz (at 1 Vrms/50 Ω output), RF signal: ≤12 kHz (at ≤+5 dBm output, modulation data: FFFF)

Internal modulation data

Pseudorandom pattern: PN15/PN9
Free 16-bit repetition pattern (ex: 0F0F, 00FF)

DATA CLOCK: Covering ±5% of bit rate

External modulation data DATA: Digital data synchronized with DATA CLOCK

TTL level, BNC connector, polarity selectable
Selectable 50 Ω or CMOS (600 Ω), BNC connector

At modulation data

I/Q signal output 50 Ω setting: 1 Vp-p ±6% (modulation data: 0000)

CMOS setting: Variable in 10% steps over range of 10% to 100% of 1 Vp-p ±6%

Variable offset voltage; 0 to 4 V in 1 mV steps (modulation data: 0000)

Phase polarity Polarity reversal of frequency deviation during modulation is possible.

Carrier frequency range: 5 to 2250 MHz

*1 (incorporated in the MG3670B/C), 5 to 2750 MHz (incorporated in the MG3671A/B)

DECT

Bit rate: 1152 kbps
Deviation ratio: 70% (202 kHz), 90% (259 kHz), 100% (288 kHz), 140% (403 kHz), at BbT=0.5
Baseband filter: Gaussian filter BbT = 0.4, 0.5, 0.6, at deviation ratio = 100%

*

1: The upper frequency is limited by the specifications of the main frame in which this unit is installed.

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RADIO COMMUNICA TIONS TEST INSTRUMENTS

6

PDC, PDC_H, PHS, NADC, TFTS (with MG0301C)
GSM, PCN (DCS1800), CT2 (with MG0302A)

Applicable communication system

DECT (with MG0305A)
PACS, WCPE, PHS (with MG0307A)
TETRA (with MG0311A)

Internal data mode TDMA framing specified for each system; modulation in each time slot using any internal modulation data

Pseudorandom pattern: PN15/PN9

*1 (for device)

Internal data

Specified pattern based on communication channel format specified for each system:

Up/down communication channel, VOX signal control

Modulation

TCH section consists of pseudorandom pattern PN15/PN9

*

1

signal

DATA CLOCK: Covering ±5% of bit rate
DATA: Digital data synchronized with DATA CLOCK

External data mode SYMBOL CLOCK: Clock specified by DATA synchronized with DATA CLOCK

BURST GATE: Burst signal synchronized with DATA CLOCK (on: ≥14 symbols, off: ≥8 symbols)
TTL level, BNC connector, polarity selectable

MG0307A π /4 DQPSK Modulation Unit (incorporated in the MG3670B/C, MG3671A/B)

Applicable communication system

PACS, WCPE, PHS

Modulation system π/4 DQPSK
Vector error

I/Q signal: ≤1.5%rms (at 1 Vrms/50 Ω output)
RF signal: ≤1.8%rms (at ≤+5 dBm output)

Pseudorandom pattern: PN15, PN9

Internal data mode Free 16-bit repetition pattern (ex: 0F0F, 00FF): WCPE

Free 4-bit repetition pattern (ex: 0101, 0011): PACS, PHS
DATA CLOCK: Covering ±5% of bit rate

External data mode

DATA: Digital data synchronized with DATA CLOCK
SYMBOL CLOCK: Clock specified by DATA synchronized with DATA CLOCK
TTL level, BNC connector, polarity selectable

Selectable 50 Ω or CMOS (600 Ω), BNC connector

I/Q signal output

50 Ω setting: 1 Vp-p ±5% (modulation data: 0000)
CMOS setting: Variable in 10% steps over range of 10% to 100% of 1 Vp-p ±5%; variable offset voltage: 0 to 4 V in 1 mV

steps (modulation data: 0000)

Phase encode function Invertible phase polarity at modulation

Carrier frequency range: 1 to 2250 MHz

*1 (incorporated in the MG3670B/C), 1 to 2750 MHz (incorporated in the MG3671A/B)

PACS Bit rate: 384 kbps

Baseband filter: Root Nyquist (α = 0.5), Nyquist (α = 0.5)
Carrier frequency range: 5 to 2250 MHz

*1 (incorporated in the MG3670B/C), 5 to 2750 MHz (incorporated in the MG3671A/B)

WCPE Bit rate: 1152 kbps

Baseband filter: Root Nyquist (α = 0.5), Nyquist (α = 0.5)
Carrier frequency range: 1 to 2250 MHz

*1 (incorporated in the MG3670B/C), 1 to 2750 MHz (incorporated in the MG3671A/B)

PHS

Bit rate: 384 kbps
Baseband filter: Root Nyquist (α = 0.5), Nyquist (α = 0.5)
Adjacent channel leakage power ratio: ≤–74 dB (600/900 kHz offset, ±96 kHz band, ≥10 MHz)

*

2

*

1: The upper frequency is limited by the specifications of the main frame in which this unit is installed.

*

2: Applicable when this unit is installed in MG3670B/C, MG3671A/B.

Not applicable when this unit is installed in MG3670A.

MG0311A π/4 DQPSK Modulation Unit (incorporated in MG3670B/C, MG3671A/B)

Applicable communication system

TETRA

Modulation system π/4 DQPSK
Vector error

I/Q signal: ≤1.5%rms (at 50 Ω output)
RF signal: ≤1.8%rms (at ≤+5 dBm output)

Internal modulation data

Pseudorandom pattern: PN15/PN9
Free 4-bit repetition pattern (ex: 0101, 0011)

DATA CLOCK: Covering ±5% of bit rate

External modulation data

DATA: Digital data synchronized with DATA CLOCK
SYMBOL CLOCK: Clock specified by DATA synchronized with DATA CLOCK

*

TTL level, BNC connector, polarity selectable

Selectable 50 Ω or CMOS (600 Ω), BNC connector

I/Q signal output

50 Ω setting: 1 Vp-p ±5% (modulation data: 0000)
CMOS setting: Variable in 10% steps over range of 10% to 100% of 1 Vp-p ±5%;

Variable offset voltage: 0 to 4 V in 1 mV steps (modulation data: 0000)

Phase encode function Invertible phase change polarity at modulation

Carrier frequency 300 kHz to 2250 MHz

*1 (incorporated in MG3670B/C), 300 kHz to 2750 MHz (incorporated in MG3671A/B)

Bit rate 36 kbps

TETRA

Baseband filter Root Nyquist (α = 0.35), Nyquist (α = 0.35)
Adjacent channel ≤–48 dB (25 kHz offset, ±9 kHz band)

leakage power ratio ≤–67 dB (50 kHz offset, ±9 kHz band)

*

1: The upper frequency is limited by the specifications of the main frame in which this unit is installed.

MG0303B Burst Function Unit (incorporated in the MG3670B/C, MG3671A/B)

Continued on next page

RADIO COMMUNICA TIONS TEST INSTRUMENTS

242

Burst wave output synchronized with trigger input signal of burst repetition rate (frame cycle) at internal modulation

Burst trigger input

Input period: ≤burst repetition rate ±1 symbol [PDC, PDC_H, PHS, NADC, GSM, PCN (DCS1800), CT2, DECT, PACS,

WCPE, TETRA], ≤burst repetition rate ±1/2 symbol (TFTS)

TTL level, BNC connector (rear panel), polarity selectable

Burst trigger output

Outputs 1-symbol wide pulse at same cycle as burst waveform output at internal modulation
TTL level, BNC connector (rear panel), polarity selectable

Following outputs selectable at internal modulation

Control PN CLOCK: Data clock corresponding to pseudorandom pattern part
signal Pattern sync output PN GATE : Gate signal corresponding to pseudorandom pattern part
output RF GATE : Signal for controlling pulse modulator in accordance with burst signal output

TTL level, BNC connector (rear panel)

Burst gate output

Outputs gate signal corresponding to burst waveform output at internal modulation
TTL level, BNC connector (rear panel), polarity selectable

Burst on/off ratio

≥80 dB (+5 dBm output, PDC, PDC_H, NADC, CT2, TFTS, TETRA), ≥75 dB (+5 dBm output, PHS, GSM, PCN, PACS),

RF output

≥70 dB (+5 dBm output, DECT, WCPE)

Rise/fall time Equivalent to 2 symbols

Memory (pattern memory) Max. 100 patterns/system (save and recall of internal modulation pattern data)

Burst repetition rate 20 ms

NADC

Slot configuration For device, up/down communication channel
Output slot select On/off selectable for any slots of slot 0 to slot 2 (excluding all slots off)
Edit function SYNC/SACCH/CDVCC: Any data, DATA: PN9, PN15

*1selectable

Burst repetition rate 20 ms (PPC), 40 ms (PDC_H)

PDC

Slot configuration For device, up/down communication channel, up VOX control

PDC_H

Output slot select On/off selectable for any slots of slot 0 to slot 2 (PDC)/slot 5 (PDC_H)

*

excluding all slots off

Edit function SW/CC/SACCH: Any data, TCH: PN9, PN15

*1selectable
Scramble function TCH + SF + SACCH scramble on/off, any scramble code setting
Burst repetition rate 5 ms
Slot configuration For device, up/down communication channel, VOX control
Output slot select On/off selectable for any slots of slot 1 to slot 4 (excluding all slots off)

PHS Edit function UW/SA: Any data, TCH: PN9, PN15

*1selectable
Scramble function TCH + CRC, scramble and secret scramble on/off, any scramble code setting
Adjacent channel

power leakage ratio

≤–74 dB (600/900 kHz offset, ±96 kHz band, ≥10 MHz)

*

2

Burst repetition rate 80 ms

TFTS

Slot configuration For device, up/down communication channel
Output slot select On/off selectable for any slots of slot 0 to slot 16 (Device/UP TCH: Slots 16 is off at all time, excluding all slots off.)
Edit function S: Any data, DATA: PN9, PN15

*1selectable

Burst repetition rate 4.615 ms

GSM, PCN

Slot configuration For device, normal burst (communication channel)

(DCS1800)

Output slot select On/off selectable for any slots of slot 0 to slot 7 (excluding all slots off)
Edit function TS: Any data, E: PN9, PN15

*1selectable

Burst repetition rate 2 ms

CT2

Slot configuration Up/down communication channel (MUX 1.2, MUX 1.4, MUX 2)
Edit function D, B, Da, Db, CHM/SYNC data selectable
Scramble function B scramble on/off, any scramble code setting
Burst repetition rate 10 ms
Slot configuration For device, up/down communication channel

Full slot: Slot 0 to slot 11 (down channel), slot 12 to slot 23 (up channel)

Output slot select

Half slot: Slot 0-0 to slot 11-1 (down channel), slot 12-0 to slot 23-1 (up channel)

DECT Double slot: Slot 0 to slot 10 (down channel), slot 12 to slot 22 (up channel)

*

On/off selectable for any slots (excluding all slots off)

S, H, T: Any data

Edit function D: PN15/PN9

*1, all-0 or all-1 selectable (for device evaluation)

D: PN15/PN9

*1, TEST or REP-8 bits any data selectable (for communication channel)
Burst repetition rate 2.5 ms
Slot configuration For device, up/down communication channel

PACS Output slot select On/off selectable for any slots of slot 0 to slot 7 (excluding all slots off)

Edit function

PN: PN9, PN15

*1selectable (for device), DE/SC/R/SYC/PCC: Any data, FC: PN9

*1, PN15

*1, all-0 or all-1 selectable

(PN15 selectable only for 1 slot)
Burst repetition rate 10 ms
Slot configuration For device, up/down communication channel

WCPE

Full slot: Slot 0 to slot 11 (down), slot 12 to slot 23 (up), Half slot: Slot 0-0 to slot 11-1 (down), slot 12-0 to slot 23-1 (up)

Output slot select

Double slot: Slot 0 to slot 10 (down), slot 12 to slot 22 (up)

*

On/off selectable for any slots (excluding all slots off)

S/H/T: Any data
Edit function D: PN9

*1, PN15

*1, all-0 or all-1 selectable (for device)

D: PN9

*1, PN15

*1, TEST or REP 8-bits any data selectable (for communication channel)

Continued on next page

243

RADIO COMMUNICA TIONS TEST INSTRUMENTS

6

Carrier frequency range 4 kHz to 2250 MHz (MG3670C), 4 kHz to 2750 MHz (MG3671B)

–143 to +8 dBm, 0.1 dB steps (1 channel only on, PCB MUX must be off when traffic present)

RF output level –143 to +4 dBm, 0.1 dB steps (multiplex channel)

Frequency response, level accuracy: Depends on main frame (after level calibration)

Supported systems IS-95: US Digital Cellular System
Modulation format Forward link: SS + QPSK, Reverse link: SS + OQPSK
Chip rate 1.2288 Mcps

IS-95 recommended filters: SPEC 1, SPEC 2, SPEC 3, SPEC 1 + EQ, SPEC 2 + EQ, SPEC 3 + EQ

Baseband filters Nyquist filters: α = 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5

Root Nyquist filters: α = 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5

Multiplex channels Channels 1 to 5

CH 1: Current Pilot, Off

Supported channels CH 2 to CH 5: Nth Pilot, Sync, Paging, Traffic, OCNS, Off

(Sync available for 1 selected channel only, all channels cannot be turned off simultaneously.)

Spread code Walsh code + Short code

Point: 0, Sync: 32, Paging: 1 to 7, Traffic: 8 to 31/33 to 63, OCNS: 0 to 63

Walsh code

(Except for Pilot code, same code number cannot be set for multiple channels.)

Forward

Short code offset 0 to 3276 chips in 64 chip steps (for Current Pilot), 1 chip steps (for Nth Pilot)

link Sync 1200 bps, Paging: 4800/9600 bps, OCNS: 19200 sps, Traffic: 1200/2400/4800/9600 bps,

Data rate

1800/3600/7200/14400 bps (Single channel selection only, except for 9600/14400 bps)
(RF output level + upper limit for each no. of multiplex channels) to –20 dB in 0.1 dB steps

Channel level

Upper limit for each no. of multiplex channels: –3 dB (2 channels), –5 dB (3 channels), –6 dB (4 channels), –7 dB (5 channels)

*

Level is set automatically for channel with highest CH number, user setting not possible.

Scramble function Long code scramble on/off (for Paging/Traffic/OCNS)

Power control bit transmission on/off (for Traffic)

PCB MUX function

PCB data: Selectable 256 bit data repeating pattern
Long code mask 42 bits can be set by user in each channel (scramble On, PCB MUX On)
Multiplex channels Channels 1 to 4

CH 1: Traffic, Access, Interfered

Supported channels

CH 2 to CH 4: Traffic, Access, Interfered, Off
Spread code Long code + short code
Long code mask 42 bits can be set by user in each channel.

Reverse

Access: 4800 bps, Interfered: 28800 sps

link Data rates

Traffic: 1200/2400/4800/9600 bps, 1800/3600/7200/14400 bps (For CH1 only on, except for 9600/14400 bps)

(RF output level + upper limit for each no. of multiplex channels) to –15 dB in 0.1 dB steps,
Channel level Upper limit for each No. of multiplex channels: 0 dB (2 channels), 2 dB (3 channels), –3 dB (4 channels)

CH 1 is fixed on upper limit, user setting not possible.
Power monitor CH 1 to CH 4 composite output level, CH 2 to CH 4 composite output level (N), S/N ratio of CH 1 output level (S),

function CH 1 Eb/N (Multiplex channel only)

Burst repetition rate 5 ms
Slot configuration For device, up/down communication channel, VOX control, sync burst
Output slot select On/off selectable for any slots of slot 1 to slot 4 (excluding all slots off)

PHS

Edit function UW/SA etc.: Any data, TCH: PN9, PN15

*1selectable
Scramble function TCH + CRC, scramble on/off, any scramble code setting
Adjacent channel

leakage power ratio

≤–74 dB (600/900 kHz offset, ±96 kHz band, ≥10 MHz)

*

2

Burst repetition rate

V + D mode: 1.02; Excluding CH13, 255 to 30000 symbols; CH13
PDO mode: 1.00; Excluding CH14, 126 to 30000 symbols; CH14

Following channel types selectable

Burst pattern V + D mode: CH1, CH2, CH3, CH4, CH13; Downlink, CH7, CH8, CH9, CH10, CH11; Uplink

PDO mode: CH5, CH6, CH14; Downlink, CH12; Uplink

Slot configuration

V + D mode: DEVICE, NORMAL, SYNC; Downlink, DEVICE NORMAL, CONTROL; Uplink
PDO mode: NORMAL, SYNC; Downlink, START, EVEN, ODD, END; Uplink

V + D mode:On/off selectable for any slots of slot 1 to slot 4 (excluding CH13 and all slots off)

Output slot select Frame 1 to Frame 17 set to the same values

TETRA PDO mode: Variable slot numbers of slot 1 to slot 150 (excluding CH14)

V + D mode:Downlink NORMAL; Any SB, SSB, NTS field data

SYNC; Any FC, SSB1, STS, SBB, SB2 field data

Uplink NORMAL; Any SB, NTS field data

Edit function

CONTROL; Any SCB, ETS field data

PDO mode: Downlink SYNC; Any FC, SB, STS field data

NORMAL; Any SB, NTS field data

Uplink START; Any ETS, SB field data, R bit Length

EVEN; Any NTS field data

Scramble function Any scramble code setting

*

1: The pseudorandom pattern in each slot has a different phase, and its pattern is continuous within the data field of slots.

*

2: Applicable when this unit is installed in MG3670B/C, MG3671A/B. Not applicable when this unit is installed in MG3670A.

MG0310A CDMA Modulation Unit (incorporated in the MG3670C/3671B)

Continued on next page

RADIO COMMUNICA TIONS TEST INSTRUMENTS

244

Frame offset 0 to 15 power control group (PCG) in 1 PCG steps
Internal frame structure Frame formats for all channel types specified by IS-95

Pseudo-random patterns: PN7, PN9, PN15

Internal modulation data Fixed pattern: User settable 16 bit data repeating pattern

Sequence data: User can set sequence data in internal RAM (2048 bits x 7 blocks) as repeating pattern of 1 to 8192 frames.
Using internal time reference clock

Data Clock: Data rate clock synched to Ref Clock and Frame Clock
Data: Digital data synched to Data Clock
ESTM Clock: 0.5 pulse/s clock synched to Ref Clock and Data Clock
Frame Clock: Channel frame clock synched to Ref Clock and ESTM Clock

External modulation data

BNC connector, TTL level, polarity switchable

Using external time reference clock

Ref Clock: ±2% of 19.6608, 9.8304, 4.9152, 2.4576 or 1.2288 MHz
Data: Digital data synched to Data Clock
ESTM Clock: 0.5 pulse/s clock synched to Ref Clock and Data Clock
Frame Clock: Channel frame clock synched to Ref Clock and ESTM Clock
BNC connector, TTL level, polarity switchable

I/Q signal output 50 Ω or CMOS (600 Ω), BNC connector

≤0 dBm output, CH1 only on, level control program function Off

Modulation accuracy (VEM),

VEM ≤2.5%rms, ρ ≤0.9992 (With SPEC 1 baseband filter)

Waveform quality (ρ)

VEM ≤3.5%rms, ρ ≤0.999 (With SPEC 2 baseband filter)
VEM ≤9.7%rms, ρ ≤0.99 (With SPEC 3 baseband filter)
VEM ≤3.0%rms (With Nyquist/Root Nyquist baseband filter)

0 dBm output, 30 kHz bandwidth (Forward link/Reverse link, Default)

Spurious emissions

Level control program function Variable level in 1 dB steps from RF output level to 0 to –20 dB range in 1.25 ms units (program interval: 800 ms)
Control signal I/O

Long code trigger input, ESTM output, ESTM alignment output, data output, data clock output, frame clock output, time
reference clock output, TTL level, BNC connector (rear panel)

Auxiliary signal outputs

*

1

Long code, short code I/Q: TTL level, BNC connector (rear panel)
Long code trigger, 26.7 ms clock, 80 ms clock,TTL level, D sub connector (rear panel)

Offset frequency

≥750 kHz ≥900 kHz ≥1.98 MHz

Baseband filter
SPEC 1 + EQ/SPEC 1 ≤–55 dBc ≤–60 dBc
SPEC 2 + EQ/SPEC 2 ≤–45 dBc ≤–60 dBc ≤–70 dBc
SPEC 3 + EQ/SPEC 3 ≤–65 dBc ≤–75 dBc

*

1: MG3670B/3671A can mount MG0310A fitted with Option 25, but in this case the auxiliary signal output function is not available.

MG0312A QPSK Modulation Unit (incorporated in the MG3670C/3671B)

Carrier frequency range 10 to 2250 MHz (MG3670B/C), 10 to 2750 MHz (MG3671A/B)
RF output level –143 to +8 dBm, 0.1 dB steps
Continuously variable level range Variable in steps of 0.1 dB in a range of 12 dB (+8 to –4 dB) from any RF output level to the upper or lower limit level.
Modulation system QPSK, OQPSK
Bit rate 0.5, 0.512, 1.0, 1.204, 1.5, 2.0, 2.048, 2.4576 Mbps

FIR filter

*1: FIR 1, FIR 2, FIR 3 (at a bit rate of 2.4576 Mbps)

Baseband filters Root Nyquist: α = 0.3, 0.4, 0.5 (operable at all bit rates)

Nyquist: α = 0.2, 0.3, 0.4, 0.5 (operable at all bit rates)
≤1.8%rms (bit rate: ≤1.5 Mbps), ≤3%rms (bit rate: ≥2 Mbps, Nyquist/Root Nyquist filters),

Vector error (RF output) ≤2.2%rms

*2(bit rate: 2.4576 Mbps, FIR 1 filter), ≤3%rms

*2(bit rate: 2.4576 Mbps, FIR 2 filter),

≤10%rms

*2(bit rate: 2.4576 Mbps, FIR 3 filter) *At ≤0 dBm output

Pseudo-random patterns: PN7, PN9, PN15, PN23

Internal modulation data

Fixed pattern: Iteration of any 16-bit data (Example: 2D2D

H

)

DATA CLOCK: ±5% of the bit rate

External modulation data DATA: Digital data synchronized with the data clock

SYMBOL CLOCK: Symbol definition clock synchronized with the data clock (BNC connector, TTL level, polarity selectable)
I/Q signal output Selectable between 50 Ω or CMOS (600 Ω), BNC connector
Phase encoding function The phase mapping of data on a constellation can be set.

At 2.4576 Mbps bit rate, 0 dBm output level, 30 kHz bandwidth

Spurious emissions

Offset frequency

≥900 kHz ≥1.98 MHz

Baseband filter
FIR 1 ≤–55 dBc ≤–60 dBc
FIR 2, Nyquist α = 0.2 ≤–55 dBc ≤–70 dBc
FIR 3 ≤–60 dBc ≤–75 dBc

*

1: Finite Impulse Response filter conforming to the TIA/EIA/IS-95 specifications

*

2: The waveform quality ρ conforming to the TIA/EIA/IS-95 specifications is ≥0.9995 (FIR 1), ≥0.999 (FIR 2), ≥0.99 (FIR 3).

RADIOCOMMUNICATIONSTESTINSTRUMENTS

•Options

Model Start-up characteristics Aging rate Temperature characteristic (0˚ to 50˚C)
MG3670/3671 Option 01
MG3670/3671 Option 02 2 x 10–8/day (after 60 min. warm-up) 2 x 10–9/day (after 24-h warm-up) ±1.5 x 10–8/day

MG3670/3671 Option 03 – 5 x 10
MG3670 Option 20 RF off release function (When RF is off, level display and level setting is enabled.)

MG0301C Option 22
MG0302A Option 23 CT2 MUX3 control pattern function

MG3670B/3671A Option 25 Format upgrade (enables MG0310A to be used in MG3670B/3671A)

Ordering information

Please specify model/order number, name and quantity when ordering.

Model/Order No.

Main frame

MG3670B Digital Modulation Signal Generator
MG3670C Digital Modulation Signal Generator
MG3671A Digital Modulation Signal Generator
MG3671B Digital Modulation Signal Generator

Expansion units (factory installed)

MG0301C π/4 DQPSK Modulation Unit (for PDC, PDC_H, PHS,

NADC and TFTS communication systems)

MG0302A GMSK Modulation Unit [for GSM, PCN (DCS1800) and

CT2 communication systems]

MG0303B Burst Function Unit [for PDC, PDC_H, PHS, NADC, TFTS,

GSM, PCN (DCS1800), CT2, DECT, PACS and WCPE

communication systems]
MG0305A GFSK Modulation Unit (for DECT communication system)
MG0307A π/4 DQPSK Modulation Unit (for PACS, WCPE, PHS

communication systems)
MG0310A CDMA Modulation Unit (for IS-95 communication system)
MG0311A π/4 DQPSK Modulation Unit (for TETRA communication

system)
MG0312A QPSK Modulation Unit

Standard accessories (for main frame)

J0576B Coaxial cord, N-P•5D-2W•N-P, 1 m: 1 pc
J0127A Coaxial cord, BNC-P•RG-58A/U•BNC-P, 1 m: 2 pcs
J0017F Power cord, 2.5 m: 1 pc
B0325 Shielded cover for GPIB: 1 pc
F0014 Fuse, 6.3 A (for 100 Vac power supply): 2 pcs
F0012 Fuse, 3.15 A (for 200 Vac power supply): 2 pcs
W0689AE MG3670B/C operation manual

(supplied with MG3670B/C): 1 copy
W0932AE MG3671A/B operation manual

(supplied with MG3671A/B): 1 copy
W0869BE MG3670B/C, MG3671A/B service manual

(supplied with MG3670B/C, MG3671A/B): 1 copy

Standard accessories (for expansion units)

W0872AE MG0301C/0303B operation manual

(supplied with MG0301C): 1 copy
W0691AE MG0302A/0303B operation manual

(supplied with MG0302A): 1 copy
W0851AE MG0305A/0303B operation manual

(supplied with MG0305A): 1 copy
W0949AE MG0307A/0303B operation manual

(supplied with MG0307A): 1 copy
W1183AE MG0310A operation manual

(supplied with MG0310A): 1 copy
B0405A Exchange sheet for front panel

(supplied with MG0310A): 1 pc
B0406A Exchange sheet for real panel

(supplied with MG0310A): 1 pc
W1050AE MG0312A operation manual:

(supplied with MG0310A): 1 copy

For additional units and version upgrades, consult your Anritsu sales represen­tative.

–8

/day (after 30 min. warm-up)

7 x 10

–8

/day (after 60 min. warm-up)

3 x 10

PHS LCCH super frame control pattern function (artificial base station signal output for field strength measurement: A PS
connection test is impossible.)

Name

–9

/day (after 24-h warm-up) ±5 x 10–8/day

5 x 10

–10

/day (after 48-h warm-up) ±5 x 10–9/day

Model/Order No. Name

MG3670/3671-01 Reference oscillator
MG3670/3671-02 Reference oscillator
MG3670/3671-03 Reference oscillator
MG3670-20 RF off release function
MG3670B/3671A-25

MG0301C-22 PHS LCCH super frame control pattern
MG0302A-23 CT2 MUX3 control pattern

J0127C Coaxial cord, BNC-P•RG-58A/U•BNC-P, 0.5 m
J0003A Coaxial cord, SMA-P•3D-2W•SMA-P, 1 m
J0576D Coaxial cord, N-P•5D-2W•N-P, 2 m
J0004 Coaxial adapter, N-P•SMA-J
J0007 GPIB cable, 1 m
J0008 GPIB cable, 2 m
B0329D Protective cover
B0331D Front handle kit (2 pcs/set)
B0332 Joint plate (4 pcs/set)
B0333D Rack mount kit
B0334D Carrying case (with casters and protective cover)

MS8604A Digital Mobile Radio Transmitter Tester
MT8801B Radio Communication Analyzer
MD1620B Signalling Tester [PDC 800 MHz, PDC 1.5 GHz

MD1620C Signalling Tester (PHS 1.9 GHz)
MD6420A Data Transmission Analyzer
MP1201C Error Rate Tester
MS2602A Spectrum Analyzer

Options (for main frame)

Format upgrade

Options (for expansion units)

Optional accessories

Optional equipment

(MD1620B-01)]

6

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