1304-B: Difference between revisions
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{{GR Product | {{GR Product | ||
|model=1304-B | |model=1304-B | ||
|codes=CAROL,1304-9802,1304-9812 | |||
|class=oscillators | |class=oscillators | ||
|summary= | |summary=Beat frequency oscillator | ||
|image=GR 1304-B Front.jpg | |image=GR 1304-B Front D.jpg | ||
|caption=General Radio 1304-B Beat Frequency Oscillator | |caption=General Radio 1304-B Beat Frequency Oscillator | ||
|series= | |series= | ||
| Line 10: | Line 11: | ||
|designers= | |designers= | ||
|manuals= | |manuals= | ||
* [[Media: | * [[Media:GRwiki 1304-B Beat Frequency Oscillator 1304-0100-L 09_1965.pdf|General Radio 1304-B Beat Frequency Oscillator 1304-0100-L 1965]] | ||
{{Catalog History}} | |||
}} | }} | ||
The | The {{Title|General Radio 1304-B Beat Frequency Oscillator}} was introduced in {{Catalog N}} and remained available through {{Catalog U}}. | ||
The Type 1304-B is a general-purpose, dual-range oscillator covering 0 to 20 kHz and 20 to 40 kHz. It has a built-in 60 dB attenuator and an output voltmeter. | |||
The 1304-B can supply 1 W of output into a 600 Ω load, floating or grounded. There is a calibration function to zero-beat the oscillator output with the 60 Hz power line. | |||
With the addition of the Type [[1521-P15|1521-P15 Link Unit]], the 1304-B can be coupled to the Type [[1521-B|1521-B Graphic Level Recorder]]. | |||
Applications for the 1304-B include amplifier and speaker testing, frequency response plotting, and as a bridge source. | |||
==Specifications== | ==Specifications== | ||
* '''Frequency Range:'''20 to 40,000 Hz in two ranges | * '''Frequency Range:''' 20 to 40,000 Hz in two ranges | ||
* '''Calibration Accuracy:''' ± (1% + 0.5 cycle) after front panel calibration | * '''Calibration Accuracy:''' ± (1% + 0.5 cycle) after front panel calibration | ||
* '''Drift:''' The drift from a cold start is less than 7 cycles in the first hour | * '''Drift:''' The drift from a cold start is less than 7 cycles in the first hour | ||
* '''Output Voltage:''' | * '''Output Voltage:''' Full-scale, open-circuit output voltages of 50 mV, 500 mV, 5 V, and 50 V | ||
* '''Output Impedance:''' 600 Ω, resistive, within ±2% | * '''Output Impedance:''' 600 Ω, resistive, within ±2% | ||
* '''Harmonic Distortion:''' | * '''Harmonic Distortion:''' Total harmonic content less than 0.25% from 100 Hz to 10 kHz, less than 0.5% below 100 Hz, less than 1% above 10 kHz | ||
==Links== | ==Links== | ||
* [[Media:GRwiki Exp 1304-B 06_1954.pdf|Experimenter describing Type 1304-B | * [[Media:GRwiki Exp 1304-B 06_1954.pdf|Experimenter June 1954 describing Type 1304-B]] | ||
* [[Media:GRwiki Exp 1304-B 11-1954.pdf|Experimenter describing Type 1304-B | * [[Media:GRwiki Exp 1304-B 11-1954.pdf|Experimenter November 1954 describing Type 1304-B]] | ||
* Compatible with [[908-P1|908-P1 Synchronous Dial Drive]] and [[908-R96|908-R96 Synchronous Dial Drive]] | |||
==Photos== | ==Photos== | ||
<gallery> | <gallery> | ||
GR 1304-B Front.jpg | GR 1304-B Front D.jpg | ||
GR 1304-B Rear.jpg | GR 1304-B Rear.jpg | ||
GR 1304-B Top.jpg | GR 1304-B Top.jpg | ||
| Line 37: | Line 46: | ||
GR 1304-B Right Side.jpg | GR 1304-B Right Side.jpg | ||
GR 1304-B Bottom.jpg | GR 1304-B Bottom.jpg | ||
GR 1521-P15 Drive Unit.jpg| 1521-P15 Recorder Dial Drive Unit | |||
</gallery> | </gallery> | ||
[[Category:Oscillators]] | [[Category:Oscillators]] | ||
Latest revision as of 19:32, 8 May 2024
The General Radio 1304-B Beat Frequency Oscillator was introduced in Catalog N (1954) and remained available through Catalog U (1970).
The Type 1304-B is a general-purpose, dual-range oscillator covering 0 to 20 kHz and 20 to 40 kHz. It has a built-in 60 dB attenuator and an output voltmeter.
The 1304-B can supply 1 W of output into a 600 Ω load, floating or grounded. There is a calibration function to zero-beat the oscillator output with the 60 Hz power line.
With the addition of the Type 1521-P15 Link Unit, the 1304-B can be coupled to the Type 1521-B Graphic Level Recorder.
Applications for the 1304-B include amplifier and speaker testing, frequency response plotting, and as a bridge source.
Specifications
- Frequency Range: 20 to 40,000 Hz in two ranges
- Calibration Accuracy: ± (1% + 0.5 cycle) after front panel calibration
- Drift: The drift from a cold start is less than 7 cycles in the first hour
- Output Voltage: Full-scale, open-circuit output voltages of 50 mV, 500 mV, 5 V, and 50 V
- Output Impedance: 600 Ω, resistive, within ±2%
- Harmonic Distortion: Total harmonic content less than 0.25% from 100 Hz to 10 kHz, less than 0.5% below 100 Hz, less than 1% above 10 kHz
Links
- Experimenter June 1954 describing Type 1304-B
- Experimenter November 1954 describing Type 1304-B
- Compatible with 908-P1 Synchronous Dial Drive and 908-R96 Synchronous Dial Drive
Photos
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1521-P15 Recorder Dial Drive Unit
