908-P1: Difference between revisions
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* [[Media:GR Exp 908-P1_P2 11_1954.pdf|Experimenter November 1954 describing Type 908-P1]] | * [[Media:GR Exp 908-P1_P2 11_1954.pdf|Experimenter November 1954 describing Type 908-P1]] | ||
* [[Media:GR Exp Dial Drives 08_1956.pdf|Experimenter August 1956 describing Synchronous Dial Drives]] | * [[Media:GR Exp Dial Drives 08_1956.pdf|Experimenter August 1956 describing Synchronous Dial Drives]] | ||
* [[Media:GR Exp X-Y Plotting Sweep Drives 12_1956.pdf|Experimenter December 1956 describing X-Y Plotting Sweep Drives]] | |||
==Photos== | ==Photos== | ||
Latest revision as of 05:22, 28 April 2024
The General Radio 908-P1 Synchronous Dial Drive was introduced in Catalog O (1956) and remained available through Catalog S (1965).
It is a synchronous dial drive with a pinion speed of 4 rpm. Its function is to sweep the dial of the attached instrument at a constant speed synchronously with a 1521-A Graphic Recorder.
Applications include plotting amplitude vs. frequency.
The Type 908-P1 features two sets of attaching screws for instruments with Type 908 and 907 dial mechanisms. The 908-P1 is self-reversing when it encounters a mechanical stop.
Compatible oscillators are 1208-C, 1209-C, 1209-CL, 1211-C, 1215-C, 1330-A, 1304-B, 1210-C, 1360-B, and 1361-A.
Specifications
- Drive Speed: 4 RPM
- 908 Dial Speed: 4/15 RPM or 225 seconds per revolution
- 907 Dial Speed: 4/10 RPM or 150 seconds per revolution
- Torque at Pinion: 5 inch-ounces
Links
- Experimenter November 1954 describing Type 908-P1
- Experimenter August 1956 describing Synchronous Dial Drives
- Experimenter December 1956 describing X-Y Plotting Sweep Drives
