Difference between revisions of "RX33 Flexible Disk Drive"

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[[image:decmateIII.jpg|thumb|right|200px|[[DECmate III]] with RX33 in the system box underneath the monitor - the expansion box to the right contains an [[RX50]] dual floppy drive]]
 
[[image:decmateIII.jpg|thumb|right|200px|[[DECmate III]] with RX33 in the system box underneath the monitor - the expansion box to the right contains an [[RX50]] dual floppy drive]]
  
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5.25" half height [[floppy drive]] 1.2 MB
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The '''RX33 Flexible Disk Drive''' was a half height [[floppy drive]] for 5.25" 1.2 MB floppies. It is a re-badged Teac FD-55GFR drive.
  
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It is supported by the following DEC [[QBUS]] MFM disk controller:
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It is supported by the [[RQDX3 MFM Disk & Floppy QBUS Controller|RQDX3]] [[QBUS]] MFM disk controller; there was no [[UNIBUS]] controller for it. Itwas also used in a large number of other DEC products; e.g. as a [[bootstrap]] device in [[Hierarchical Storage Controller]]s.
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* [[RQDX3 MFM Disk & Floppy QBUS Controller|RQDX3]]
 
  
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{{stub}}
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==Specifications==
  
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[[Category: DEC Disk Drives]]
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*Weight - 1.10 kg (2.43 lb)
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*Height - 4.32 cm (1.70 in)
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*Width - 14.61 cm (5.75 in)
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*Depth - 20.32 cm (8.00 in)
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*Number of tracks - 80
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*Number of heads - 2
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*Track density - 96 tracks per inch
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*Step rate - 3 ms per track
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*Diskette size - 13.13 cm (5.25 in)
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*Recording surfaces per diskette - 2
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*Sectors per track
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**normal density - 10
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**high density - 15
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*Capacity
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**Bytes per drive
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***high density - 409 KB
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***normal density - 1200 KB
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**Blocks per drive
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***high density - 800
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***normal density - 2400
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*Block size - 512 bytes
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*Data transfer rate (to and from media)
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**normal density - 250 Kbits per second
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**high density - 500 Kbits per second
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*Operating power - 4.1 watts
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*Standby power - 1.5 watts
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===Operating Conditions===
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*Temperature range - 10°C to 46°C (50°F to 115°F)
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*Temperature change rate - 11°C (20°F) per hour, maximum
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*Relative humidity - 20% to 80% noncondensing
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*Maximum wet-bulb temperature - 45°C (113°F)
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*Minimum dew-point temperature - 2°C (36°F)
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*Altitude - 2400 m (8000 ft) maximum
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(Reduce maximum temperature by 1.8°C for each 1,000 meter (1.0°F for each 1,000 ft) increase in altitude.)
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===Nonoperating Conditions===
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*Temperature - 34°C to 60°C (30°F) to 140°F)
 +
*Temperature change rate - 20°C (36°F) per hour, maximum
 +
*Relative humidity - 5% to 90%
 +
*Maximum wet-bulb temperature - 45°C (113°F) packaged
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*Altitude - 9100 m (30,000 ft) maximum
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{{semi-stub}}
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==External links==
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* [https://avitech.com.au/?page_id=2660 DEC RX33 Floppy Drive]
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* [http://bitsavers.org/www.computer.museum.uq.edu.au/pdf/EK-ORX33-IP-001%20RX33%20Flexible%20Disk%20Drive.pdf RX33 Flexible Disk Drive Illustrated Parts Breakdown ]
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[[Category: DEC Floppy Disk Drives]]

Revision as of 20:05, 15 August 2023

DECmate III with RX33 in the system box underneath the monitor - the expansion box to the right contains an RX50 dual floppy drive

The RX33 Flexible Disk Drive was a half height floppy drive for 5.25" 1.2 MB floppies. It is a re-badged Teac FD-55GFR drive.

It is supported by the RQDX3 QBUS MFM disk controller; there was no UNIBUS controller for it. Itwas also used in a large number of other DEC products; e.g. as a bootstrap device in Hierarchical Storage Controllers.

Specifications

  • Weight - 1.10 kg (2.43 lb)
  • Height - 4.32 cm (1.70 in)
  • Width - 14.61 cm (5.75 in)
  • Depth - 20.32 cm (8.00 in)
  • Number of tracks - 80
  • Number of heads - 2
  • Track density - 96 tracks per inch
  • Step rate - 3 ms per track
  • Diskette size - 13.13 cm (5.25 in)
  • Recording surfaces per diskette - 2
  • Sectors per track
    • normal density - 10
    • high density - 15
  • Capacity
    • Bytes per drive
      • high density - 409 KB
      • normal density - 1200 KB
    • Blocks per drive
      • high density - 800
      • normal density - 2400
  • Block size - 512 bytes
  • Data transfer rate (to and from media)
    • normal density - 250 Kbits per second
    • high density - 500 Kbits per second
  • Operating power - 4.1 watts
  • Standby power - 1.5 watts

Operating Conditions

  • Temperature range - 10°C to 46°C (50°F to 115°F)
  • Temperature change rate - 11°C (20°F) per hour, maximum
  • Relative humidity - 20% to 80% noncondensing
  • Maximum wet-bulb temperature - 45°C (113°F)
  • Minimum dew-point temperature - 2°C (36°F)
  • Altitude - 2400 m (8000 ft) maximum

(Reduce maximum temperature by 1.8°C for each 1,000 meter (1.0°F for each 1,000 ft) increase in altitude.)

Nonoperating Conditions

  • Temperature - 34°C to 60°C (30°F) to 140°F)
  • Temperature change rate - 20°C (36°F) per hour, maximum
  • Relative humidity - 5% to 90%
  • Maximum wet-bulb temperature - 45°C (113°F) packaged
  • Altitude - 9100 m (30,000 ft) maximum

External links

Retrieved from "https://gunkies.org/w/index.php?title=RX33_Flexible_Disk_Drive&oldid=31097"