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제조사	MEGURO
브랜드	MEGURO
모델	MSG-2280
판매가격	5,280,000원
배송비결제	주문시 결제

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MSG-2280 FM Stereo/FM-AM Standard Signal Generator

This MSG-2280 high-performance digital standard signal generator adopts the DDS (Direct Digital Synthesizer) method. The wide frequency of this unit ranges from 100kHz to 170MHz covering the weather band, and it is provided with a built-in FM stereo modulator, so that this unit is the most suitable for adjusting and inspecting multi-band receivers.
Owing to the adoption of the DDS method, the frequency settling time is shorter than 10ms, so that the GP-IB measuring time can bIn addition to its high performance and multiple functions, all operation is controlled by a microprocessor to ensure easy operation and rapid work.
This unit is also provided with GP-IB, RS-232C, and EXT.I/O external control interfaces as standard so that it can be converted into an automatic measuring system.

■	Digital standard signal generator adopting the DDS method Owing to the adoption of the DDS method, this MSG-2280 signal generates precise RF frequencies over a wide range of 100kHz to 170MHz in addition to AF frequencies by its built-in AF oscillator.
■	10ms settling time Adopting the DDS method ensures a high settling speed of frequencies and the response time is shorter than 10ms.
■	100kHz to 170MHz wide band Its frequency range extends over a wide range from 100kHz to 170MHz covering the AM band, FM band, and weather band.
■	Electronic attenuator Its highly reliable electronic attenuator ensures a long-time continuous use, and the output level (-20dBµV to 126dBµV) can be switched quickly and precisely.
■	An FM stereo modulator is built-in This unit comprises MONO, MAIN, L, R, SUB, and OFF modulation modes and its L/R separation exceeds 60dB.
■	Multi-functions This unit can execute AM/FM simultaneous modulation for testing the suppression degree of multi-pass signals. Its output AGC and limiting sensitivity can be read directly by its ΔdB function. It can also read the detuning frequency, etc. easily and directly by its ΔF function.Pre-emphasis can be set to OFF, 25µs, 50µs, and 75µs.
■	Memory function and interface Data of 100 points can be stored and recall out by its memory function.This unit is also provided with GP-IB, RS-232C, and EXTI/O external control interfaces as its standard equipment so that it can be converted into an automatic measuring system.

Frequency Section
Range	100kHz to 170MHz
LED display/Resolution	7digits/100Hz (Δf function)
Settling time	Less than 10ms
Accuracy	±5×10^-6

Output Section
Output Range	-20dBµV to 126dBµV (EMF)
LED display/Resolution	4-digits/0.1dB
Accuracy	±1.5dB
Leveling	±1.5dB
Output impedance	50Ω, VSWR < 1.3
Unit	dBµV [EMF]
Spurious signals
• 2/3 rd Harmonic sprious	< -30dB
• Non-Harmonic sprious	< -40dB
Attenuataor	Electronic attenuator(Semiconductor)
RF leakage	Will not effect output level performance when 0dBµV is set 0dBµ

Modulation Section

< FM Data >

Deviation range

0 to 135kHz

Max.FM deviation

Fo≦35MHz,Up to 25% of carrier frequency

LED display/Resolution

3-digit / 0.1kHz

Modulation accuracy

10.7MHz±1MHz (76MHz to 108MHz)
±(setting×0.1 + 0.5) kHz
0.3MHz to 170MHz
±(setting×0.1 + 1) kHz

Internal modulation

• Frequency

10Hz to 100kHz

• Accuracy

±0.1%

Ext.modulation

• Freq. range

20Hz to 100kHz

• Impedance

10kΩ unbal

• Input voltage

1Vp-p ±2%

• Distortion

≦0.05% in 10.7MHz±1MHz
76MHz to 108MHz
≦0.1% in 0.3MHz to 170MHz
(With AF 1kHz at 75kHz dev. in BW 50 to 20kHz with 50µs de-emphasis applied)

• Residual FM

< -80dB
(In demod.Band,80 to 20kHz with de-emphasis 50µS applied)

• Incidental AM

≦0.5%
(10.7MHz±1MHz,76MHz to 108MHz with AF 1kHz and FM 75kHz deviation)

Distortion range

0% to 100% (lower than 120dBµV)
0% to 30% (Higher than 120dBµV)

Modulation range

0% to 100% (lower than 120dBµV)
0% to 30% (Higher than 120dBµV)

LED Display/Resolution

3-digits/0.1%

Accuracy

±(setting×0.1+1)% (0.4MHz to 1.7MHz≦80%)
±(setting×0.1+2)% (0.15MHz to 170MHz≦80%)

Internal modulation

• Frequency

10 to 20kHz

• Accuracy

±0.1%

Ext.modulation

• Freq. range

20Hz to 20kHz (1kHz reference)

• Freq. response

±1dB

• Impedance

10kΩ (unbal)

• Input Voltage

1Vp-p ±2%

• Distortion

RF Freq. (MHz)	Modulation
RF Freq. (MHz)	0 to 30%	30.1 to 60%	60.1 to 80%
0.4 to 1.7	≦0.5%	≦1.5%	≦3.0%
0.15 to 170	≦1.5%	≦3.0%	≦5.0%

Residual AM

0.5% (in demod.Band,80Hz to 15kHz)

Incidental FM

≦75Hz (0.4MHz to 1.7MHz)
≦150Hz (0.15MHz to 170MHz)

FM Stereo Modulation
Separation	≧55dB (With AF 400Hz to 1kHz at 100% modulation in 76MHz to 108MHz) ≧40dB (With 50Hz to 15kHz)
Frequency response	≦±1dB (20Hz to 15kHz with AF 1kHz reference)
Composite signal
• Output	5Vp-p±10% (FM-MONO, 100% MOD)
• Setting range	0 to 135% (75kHz/100%)
• Setting accuracy	±1%
• Impedance	600Ω
Distortion	≦0.05% (100% MOD.)
S/N	≧76dB
38kHz
• Leakage	≦-50dB
Pilot signal
• Frequency	19kHz±1Hz
• Output	1Vrms±10% (Fixed)
• Impedance	1kΩ
• Setting range	0 to 15% in 0.1step
Modulation Mode	L=R / L / R / L= -R / MONO / OFF
Intenal modulation
• Frequency range	20 to 15kHz
• Frequency response	±1dB
Pre-emphasis
Setting range	25µs / 50µs / 75µs / OFF

Interface Function
Parallel interface	GP-IB complying with an IEEE std.488-1975
Serial intreface	RS-232C
Ext.control interface (I/O)	TTL level

General Data
Operating Temperature range	0ºC to +40ºC
Performance guarantee	+10ºC to +35ºC
Power requirements	AC100 to 240V±10%, 50/60Hz, 42VA
Dimensions	420 (W) × 100 (H) × 370 (D) mm
Weight	Approx. 7.5kg