Atec Anritsu-MG3670 Series - Manual (Page 4)

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RADIO COMMUNICATIONS, EMI MEASURING TEST INSTRUMENTS
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Frequency range 300 kHz to 2250 MHz (MG3670B/C), 300 kHz to 2750 MHz (MG3671A/B and MG3672A)
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* 2 –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* 2
–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* 2 output level
Level unit dBm, dBµ, µV, mV, V (dBµ, µV, 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, CW
Spurious ≤–65 dBc (≥100 kHz offset, ≤±100 MHz bandwidth), ≤–50 dBc (≥100 kHz offset, full band),
Signal purity (at ≤+5 dBm output) ≤–40 dBc [≥2.65 GHz, spurious at 5.4–Fout (carrier frequency) GHz], ≤–30 dBc (harmonics)
SSB phase noise ≤–120 dBc/Hz (100 kHz offset, CW)
Specifications (refer to the MG3670B/C, MG3671A/B, and MG3672A data sheet for more details)
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MG3670B/C, MG3671A/B, and MG3672A Digital Modulation Signal Generator
Continued on next page
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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/
3672A 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 switch-
ing. Selecting the best step for each evaluation item gives even high-
er performance. This excellent basic performance in a standard dig-
ital modulation signal generator makes it the ideal choice for the de-
velopment and manufacture of digital mobile wireless equipment and
related devices/modules.
Modulation spectrum
(with MG0310A installed in the MG3670C/3671B/3672A)
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Excellent adjacent channel power ratio characteristics (only
for MG3672A)
Mounting the MG0314A on the MG3672A and setting the filter mode
to ACP (Adjacent Channel Power) yields an adjacent channel pow-
er ratio of –63 dBc (specification value) and –65 dBc (typ.) (with 0
dBm output, 1 channel output, 18˚ to 30˚C, 1.8 to 2.2 GHz). Moreover,
setting the filter mode to EVM (Error Vector Magnitude) guarantees
a modulation accuracy not exceeding EVM 5.0% (rms). The three fil-
ters are provided, enabling selection of performance according to the
evaluation items.
The baseband filter can be set in 0.05 steps, ( α = 0.2 to 0.5), for
RNYQ and NYQ, as well as to α = 0.22 for RNYQ for W-CDMA sys-
tem experimentation. The superior basic performance of the stan-
dard digital modulation signal generator permits development and
manufacturing of digital mobile radio equipment and related devices
and modules.
Adjacent channel power ratio at 5 MHz
(Optimizing the distortion of MS2602A Spectrum
Analyzer with MG0314A mounted into MG3672A)