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TX-400/LS
Paper tape reader puncher - under construction

The TX 400/LS was a combined punched paper tape reader and puncher, developed by Coscom GmbH in Steinhöring (later: Berlin, Germany) around 1981. The device was built around Siemens T-1000 parts and was aimed at the CAM 1 and military markets. It is suitable for 5-level and 8-level paper tape and supports ASCII, ISO and ITA2 standards. From 1987 onwards, the product was also distributed by CDI Informationssysteme GmbH in Filderstadt as a rebatched product.

The image on the right shows a typical TX-400 LS as it was sold in the late 1980s. The device is largely built with parts from the Siemens T-1000 telex and consists of a purpose-built plastic case with a siemens optical tape reader, a mains PSU 2 and a V.24 interface. A Siemens T-1000 tape puncher is bolted to the right of the main unit.   
TX-400/LS

The first version, the TX-400, was introduced in 1981 at a price of DM 3950 (EUR 1975) excluding VAT [1]. The price of a single unit in 1982 was DM 4950 (EUR 2475), excluding VAT [2].

  1. CAD = Computer Aided Design.
  2. PSU = Power Supply Unit.

Manufacturer
  • Coscom Computer GmbH, Pfarrerweg 26, 8019 Steinhöring (Germany)
Technical specifications
  • Channels
    5 or 8
  • Protocol
    ASCII, ISO, Telex (ITA2, Baudot)
  • Data
    110, 300 baud
  • Speed
    30 characters per second
  • Interface
    20mA and V.24
  • Weight
    5.8 kg
References
  1. Computerwoche, Löcher auch mobil
    24 July 1981.

  2. Computerwoche, Mikroprozessor steuert Lochstreifen
    26 March 1982.
Further information
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