The TD-23 can be used for point to point or multidrop applications connecting equipment supporting either an RS-232/V.24 or RS-422/485 interface. The modem is designed for 2- or 4-wire leased lines and meets the ITU-T V.23 standard.
Half-duplex transmission is possible over 2-wire circuits and full duplex on 4-wire, in both cases data rates up to 1 200 bit/s are possible. The transmission level and receiver sensitivity of the TD-23 can be adjusted by DIP-switches which makes it possible to communicate over long distances on private lines despite poor line quality.
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Data rate 1200 bit/s (V.23) |
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2-wire (half duplex),4-wire (full duplex) |
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Number of multidrop points,16 (typical value) |
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Transmission distance up to 25 km (15.5 miles) |
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Adjustable output signal level |
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Adjustable reception sensitivity |
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Transient protection on the line side |
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AC-/DC-supply |
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Tri-Galvanic isolation (interface/line/supply) |
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Optional relay output reflecting the transmitter carrier |
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