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Psion Revo Plus

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Psion Revo Plus
Psion product photograph of a German-market Revo Plus; the "16MB" marking is below the screen
Specifications
DeveloperPsion
ManufacturerPsion
TypeClamshell palmtop / PDA
ReleasedSeptember 2000 (Europe)
Discontinued2003
CPUARM710T @ 36 MHz
Memory16 MB RAM; 8 MB ROM
StorageInternal RAM disk only; no memory card slot
Display480 × 160 greyscale LCD (16 grey levels), touch-sensitive; no backlight
SoundLoudspeaker
Power2 × internal AAA NiMH rechargeable cells (700 mAh)
Dimensions157 mm × 78 mm × 18 mm
Weight200 g
OS / FirmwareEPOC Release 5 (Symbian)
PredecessorPsion Revo
Model no.Rebadged for the United States and Canada as the Diamond Mako

The Psion Revo Plus is the 16 MB version of the Psion Revo, first released in Europe in September 2000. It has twice the Revo's RAM, a redesigned main board to take the new memory chip, a larger battery, and the Opera web browser and a WAP browser in its software.[1][2] The processor, screen, keyboard and case size are the same as the Revo's.[3][2]

History

Psion released the Revo Plus in Europe in September 2000, about ten months after the Revo.[1][2] SONICblue sold it in the United States and Canada as the Diamond Mako.[2] The Revo line ended in 2003, and its planned successor, codenamed Conan, was never released.[2]

Specifications

Psion Revo Plus specification[3][1]
Item Specification
Processor ARM710T, 36 MHz
ROM 8 MB
RAM 16 MB
Display 480 × 160, 16 grey levels, touch-sensitive; no backlight
Keyboard 53-key QWERTY
Interfaces Infrared (IrDA); RS-232 serial through the docking station
Batteries Two internal AAA NiMH rechargeable cells, 700 mAh; average run time 14 hours (netogram)
Mains adaptor input 100–240 V AC ±10 %, 50/60 Hz
Size and weight 15.7 × 7.8 × 1.8 cm, 200 g
Operating system EPOC Release 5

Differences from the Revo

Revo and Revo Plus compared
Revo Revo Plus
RAM 8 MB[4] 16 MB[3]
Cells 2 × 650 mAh AAA NiMH[4] 2 × 700 mAh AAA NiMH[1][5]
Main board Original Redesigned for the new memory chip[1]
Software EPOC Release 5 suite Adds the Opera web browser and a WAP browser[1]
Nameplate "revo" "revo PLUS"[1]

The Revo Plus holds twice the RAM in standby, so it uses more charge while switched off. Kevin Millican estimates about 6 % a day for a Revo Plus or Mako, against 3 % for a Revo.[6]

The Revo Plus closed, with the "revo PLUS" nameplate on the lid

Battery and charging

The Revo Plus has the same arrangement as the Revo: two AAA NiMH cells soldered to a connector and sealed under the lid nameplate. R3UK's replacement guide was written on a Revo Plus and covers the Revo, Revo Plus and Diamond Mako.[5]

  • Use NiMH cells only.[2]
  • Avoid starting a charge above about 80 %. The charge controller calibrates from a thermal change at about 84 % of indicated capacity, and a charge started above that point may not switch to trickle charge.[6]
  • After a battery replacement or hard reset, charge without interruption from empty to full so that the gauge recalibrates.[2][6]
  • The loose-cell fault that affected a small number of early Revos was confined to 8 MB machines.[6]

The procedure is on Psion Revo Battery Replacement.

A Psion Revo beside an Ericsson MC218, the rebadged Series 5mx

Documentation

Psion's Psion Revo Handbook (PDF) covers the Revo's operation, charging, care, troubleshooting and resets, which are the same on the Revo Plus. Its specification appendix gives the 8 MB Revo's figures.[4]

General maintenance

Main article: Psion Revo Plus General Maintenance

See the Psion Revo Plus General Maintenance guide.

Troubleshooting

Main article: Psion Revo Plus Troubleshooting Guide

See the Psion Revo Plus Troubleshooting Guide.

Battery replacement

Main article: Psion Revo Battery Replacement

The Revo battery replacement procedure applies to the Revo Plus.[5]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 "Psion Revo Plus", Centre for Computing History.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 "Psion Revo", Wikipedia.
  3. ↑ 3.0 3.1 3.2 "Psion 3mx, Psion 5, Psion 5mx, Psion Revo and Psion Revo Plus specifications", netogram.com, section "Psion Revo Plus".
  4. ↑ 4.0 4.1 4.2 Psion Computers PLC, Psion Revo Handbook, version 1.1, February 2000, "Specification" (p. 206). Hosted on this wiki as File:Psion Revo Handbook (February 2000).pdf.
  5. ↑ 5.0 5.1 5.2 David Savery, "Psion Revo/Diamond Mako Disassembly & Battery Replacement", R3UK, 9 August 2004.
  6. ↑ 6.0 6.1 6.2 6.3 Kevin Millican, "Revo Battery Information", 25 May 2003.


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