MSG-2520 FM-AM Signal Generator
| The MSG-2520 is designed for use on the production line for AM-FM radios and TV sound receivers. It is a small-scale version of a "Centralized signal generating system" in which up to eight discrete test frequencies can be generated with oscillator plug-in units. Further, it is possible to mix the outputs and distribute them to four test positions. Two types of oscillator plug-ins cover the AM bands, 0.1 to 30MHz and three types for the FM band, 60 to 110MHz and TV sound frequency bands. They can be used in any combination to meet the set testing requirements. The carrier frequencies are initially set, stored in an RAM and controlled with an internal microcomputer. |
| ■ | AM and FM bands covered with five oscillator plug-in units (total of eight can be installed) in any combination. Data are given in the specifications. |
| ■ | Carrier frequency in each unit settable to six digits and memorized using a store switch. With an internal microcomputer, the frequency of each unit is controlled with a reference crystal oscillator. High accuracy and stability are assured. |
| ■ | The reference output level of each unit is 100dBµ and adjustable in the +1 to -6dB range. |
| ■ | Modulation applicable, internal or external, for 50% AM and 0 to 100kHz deviation for FM. |
| ■ | In addition to outputs from installed units, two external signals can be connected for additional mixed outputs. |
| ■ | Back-up battery included for storing memorized carrier frequencies at power off condition. |
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MAIN FRAME (MSG-2520) |
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Signal Generation |
Up to eight frequencies with AM and FM oscillator plug-in units |
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Frequency Display |
Max. 6 digits |
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Frequency Accuracy |
±2×10-5 |
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Frequency Resolution |
1kHz : 100kHz to 30MHz |
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10kH z: 60MHz to 110MHz |
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10kH z: TV sound frequency |
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Frequency Setting |
Each plug-in unit frequency can be set up or down at the selected digit order |
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Output Signals |
Four outputs, mixed with eight (max.) signals. 100dBµ |
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Source Impedance |
50Ω, VSWR <1.2 |
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Spurious Signals |
< -40dB (at eight signal mixing) |
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External Signal Input |
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• Frequency Range |
Two signals in the 0.1 to 110MHz range and TV sound frequency bands |
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• Input Level |
100mVrms, max. |
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• Impedance |
50Ω, VSWR <1.2 |
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Modulation |
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• Internal |
400Hz and 1000Hz ±5% |
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• External |
Input Impedance : approx. 10kΩ unbalancedInput Voltage : 2Vrms at maximum indication |
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Power Requirements |
AC 100V, 115V, 215V or 230V ±10%, 50VA |
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Dimensions |
Approx. 420 (W) × 165(H) × 450 (D)mm |
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Weight |
Approx. 12kg |
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