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Anritsu MG3671B Digital Mod. Signal Generator 300 kHz - 2.25/2.7GHz

Description

The MG3670B/C, MG3671A/B is a digital modulation signal generator equipped with a high performance quadrature modulator. It out- puts 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 base- band 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 () 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).

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

Specifications

 

 

 

Carrier frequency

Frequency range

300 kHz to 2250 MHz (MG3670B/C), 300 kHz to 2750 MHz (MG3671A/B)

Accuracy

Depends on installed reference oscillator*1

 

Internal reference oscillator

Frequency: 10 MHz

Start-up characteristics: ≤1 x 10–7/day (after 30-min. warm-up), ≤5 x 10–8/day (after 60-min. warm-up) 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)

 

 

 

 

 

 

Output

Level range

–143 to +13 dBm (resolution: 0.1 dB)

Frequency response

≤±1 dB (at 0 dBm output)

 

 

Level accuracy

Output level/frequency

≤1000 MHz

>1000 MHz

–33 to +13 dBm

±1 dB

±2 dB

–123 to –33.1 dBm

±1.5 dB

±2 dB

–136 to –123.1 dBm

±3 dB

±4 dB

Impedance

50 Ω, N-type connector

Continuously variable level

Continuously variable output over 20 dB range (+8 to –12 dB) in 0.1 dB steps within upper and lower limits of any output level

Level unit

dBm, dBµ,  µV, mV, V (dBµ,  µV, mV, V  selected terminate/open voltage display)

Interference radiation

≤1 µV  *Measured 25 mm from cabinet (except rear panel) with two-turn 25 mm diameter loop antenna, terminated with 50 Ω load, ≤+5 dBm output, carrier wave

 

Signal purity

Spurious

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

≤–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)

 

 

Digital modulation

Internal modulation

Depends on installed modulation unit (MG0301C/0302A/0305A/0307A/0310A/0311A/0312A)

 

External modulation

Any modulation using I/Q input signal Input frequency: DC to 1.2 MHz*2

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 modulation

Input

TTL level, BNC connector, polarity selectable

On/off ratio

≥40 dB (at ≥0 dBm output)

Transition time

≤2 µs, minimum pulse width: 10 µs

Memory function

Frequency memory

1000 carrier frequencies (save and recall)

Parameter memory

100 panel settings (save and recall)

 

 

Other functions

Relative display

Carrier frequency, output level

I/Q signal adjustment

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

Backup

Last settings stored at power-off

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

EN55011: 1991, Group 1, Class A

EN50082-1: 1992

Safety

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

Standards

CISPR
CISPR 11
CISPR 14 - 1
CISPR 14 - 2
CISPR 14 - 2
CISPR 16 - 1
CISPR 16 - 2
CISPR 16 - 3
CISPR 16 - 4
CISPR 22
CISPR 24
IEC
IEC/TR EN 61000 - 1 - 1
IEC/TR EN 61000 - 2 - 1
IEC/TR EN 61000 - 2 - 3
IEC EN 61000 - 3 - 2
IEC EN 61000 - 3 - 4
IEC/TC EN 61000 - 3 - 5
IEC EN 61000 - 4 - 2
IEC EN 61000 - 4 - 3
IEC EN 61000 - 4 - 4
IEC EN 61000 - 4 - 5
IEC EN 61000 - 4 - 6
IEC EN 61000 - 4 - 7
IEC EN 61000 - 4 - 8
IEC EN 61000 - 4 - 9
IEC EN 61000 - 4 - 11
European
EN 50 081 part 1
EN 50 081 part 2
EN 55 011
EN 55 013
EN 55 014
EN 55 015
EN 55 020
EN 55 022
EN 55 024
EN 50 082 part 1
EN 50 082 part 2
EN 50 093
American
FCC Part 15
MIL-STD - 461E