All operation function are microprocessor-controlled and set values are displayed in digital form.It covers the frequency range, 100kHz to 110MHz, for AM and FM broadcast frequency ranges and it is suitable for testing multi-band receivers in the production line.Carrier frequencies are locked with a crystal oscillator for high stability.Frequencies are displayed in 6-digit form for accuracy in readout.Output level range is -20 to +99dBμ with 2-digit readout.
The attenuators are completely non-mechanical with the use of semiconductors for high speed switching action with no wear.Back-up battery is provieded to retain memory contents when the line power is cut off.The GP-IB interface bus ( comforming to IEEE ) is provided as standard, enabling to connect a personal computor.MSG-2270 series.MSG-2270 FM-AM Standard Signal GeneratorMSG-2271 FM-AM Standard Signal Generator with FM stereo unit

Specifications for MSG-2271(2 in 1)
The general specifications of the MSG-2271 are the same as MSG-2270FM-stereo functionSeparation
> 50dBFrequency response
±0.2dB : 40Hz ~ 10kHzDistortion
< 0.03% at 30Hz ~ 15kHz with 100% modulationS/N
> 86dB38kHz leakage
< -50dBPilot frequency
19kHz ±1HzModulation mode
MAIN, SUB, L&R, LEFT, RIGHT, OFFInternal modulationFrequency
400Hz, 1kHz, 6.3kHz & 10kHzAccuracy
±3% for each frequencyExternal modulationFrequency range
30Hz ~ 10kHzFrequency response
±1dBInput voltage
1Vp-p ±2% Pre-emphasisSetting range
OFF, 25μS, 50μS, 75μS

10kHz to 280MHz, +132dBμ at open circuit
Low Distortion, Low Noise and High SeparationFrequency Range
10kHz to 280MHz ±2×10-6Fixed Frequency
89.9MHz ( crystal oscillator )Frequency Indication
7-digit LEDOutput Level Range
-20 to +132dBμ, at open circuitOutput Level Indication
3-digit LED
Output Level Accuracy
±1dB ( > 20dBμ ), ±1.5dB (< 20dBμ )Spurious Signal
Non-harmonics : < -60dB
FM Frequency Deviation
0 to 30kHz / 0 to 150kHz / 0 to 300kHzFM Modulation Distortion
< 0.01% at 75kHz deviation
AM Modulation Range
0 to 99.9%, 3-digit LEDAM Modulation Distortion
< 0.1% at 50% modulation
Dimensions & Weight
Approx. 430W×115H×380Dmm · 15kg

Signal Generation
Up to eight frequencies with AM and FM unitsFrequency Display
Max. 6digitsOutput Signals
For outputs, mixed with eight ( max. ) signals. 100dBμ into load per frequencyDimensions & Weight
Approx. 430W × 165H × 430Dmm · 18kg< FM PLUG-IN UNIT >
MU-25-3 : 60 to 76MHz, MU-25-4 : 75 to 91MHz
MU-25-5 : 87 to 110MHz, MU-25-7 : TV sound frequency bands< AM PLUG-IN UNIT >
MU-25-1 : 100 to 1700kHz, MU-25-2 : 1 to 30MHz
MSG-211G-1
no imagesSeparation : over 72dB (typ.)
S/N : over 90dB (typ.)
Distortion : less than 0.003% (typ.) Channel Separation
> 66dB : 30Hz to 15kHzOutput Voltage Range
0.5 to 5.0V rms, at open circuitOutput Impedance
Approx. 75 Ohm, unbalancedDistortion
< 0.005% : 30Hz to 15kHzSignal-to-Noise Ratio, S/N
> 90dB
Pilot Frequency
19kHz ±1HzPilot Signal Output
Approx, 1.0V rms
Internal Modulation Freq.
30, 100, 400Hz, 1, 6.3, 10, 15kHzExternal Modulation Freq.
30Hz to 15kHz
Modulation Modes
3bit OFF, MONO, MAIN, LEFT, RIGHT, SUB, L&RDimensions & Weight
Approx. 430W×118H×345Dmm · 7kg

L-MSK Modulation SignalAUTO : L-MSK signal, MANUAL : 0% to 25.5% LED Screen
Characters, etc. to the DARC data can be checked on the LCD screenOutput
High power output 10Vp-pMax. Frame Number
160 framesNumber of Records
0 to 15 recordsExternal Modulation Input ( DATA-IN, CLOCK-IN )External Data Input Memory FunctionExternal Multiplex InputStereo Modulator Unit ( option )Decoder Unit ( option )Error Rate Measuring Function

1.Frequency stability of internal reference oscillator is less then 5×10-8.
With external Atomic Oscillator, stability is possible to improve up to 5×10-11 through input terminal on a rear panel.2. Frequency adjustable in 0.1Hz steps.3. Doppler frequency (1.57542GHz±10kHz) can be digital-set.4. Rapid changing output level from -50 to -149dBm.5. LNA powered antenna can be connected. A capacitor is installed in the RF output terminal. 6. All NAVI data preset by GP-IB line and also automatic Z count renewal function can be preset.7. Most suitable for inspecting convolution operation of Receivers with capability of presetting of doppler frequency and level of each Satellite8. 1.023MHz data clock and NAVI data are on a rear panel for checking IF section and signal processing section.9. The front panel operation can be programmed by GP-IB

1. This instrument covers a frequency range of 100kHz to 170MHz, for AM and FM signal suitable for testing multi-band receivers and also weather band.2. The MSG-2200 has a DDS method to generate RF carrier frequency and also AF oscillator with a frequency range of 10Hz to 100kHz.3. The frequency settling time is less than 2 ms due to the DDS circuits.4. The RF output level covers a very wide range, -20dBμ to 126dBμV at open circuit and the attenuators are completely non-mechanical (electronic type) with no wear.5. FM stereo modulator is built-in as standard.6. A simultaneous AM/FM modulation function is equipped, and also
delta (increment/decrement) control of frequencies and output level are possible.7. All panel functions can be memorized and up to 100 points can be stored and recalled.8. Particular attention is paid for compactness and economy.9. The GP-IB and external control I/O are provided as standard.10. All operating functions are controlled with a microprocessor and the set values indicated in digital form for ease in the readout.

The VICS Decoder, MDC-2171 is available for receiving the field air data with 2-way power supply.