[. . . ] www. vdo. com Sender Unit 2159-0x The Sender Unit is designed for transforming the rotatory movement of the speedometer drive shaft (characteristic coefficient of the vehicle) into electrical pulses. [. . . ] Features · Double pulse (inverted) · Mechanical input · Static measuring · Hall IC technology · Suitable for road speed and engine speed measuring · Independent of sense of rotation · Can be sealed Applications · For tachographs/EC tachographs KTCO 1318, FTCO 1319 and MTCO 1390 NEC · Generally for devices requiring an electrical pulse (double pulse, inverted) for road speed and/or distance measuring. 2159-0x Technical Information Output Imp. /revolution Impulse ratio Operating voltage Power consumption (~U) Operating temperature Storage temperature Connection Output resistor (pull up) Protective resistance Signal shape Frequency (max. ) Output signal A1 Output signal A2 Double pulse (inverted) 8 (n and v) 30-70% . . . +140°C unearthed open collector 1, 5 k rectangular < 1 kHz UL < 1, 9 V (1mA) inversion of A1 Radiated susceptibility Outputs, short-circuit proof Protection Resistance to vibrations Connection of sender unit to sender unit cable Connection of sender unit to a speedometer drive shaft Torquet (wrench size) Weight Dimensions (Ø x L in mm) via bayonet joint via thread M22 x 1, 5 or 7/8 18 UNS 2B 50 ± 10 Nm (WS 27) approx. 39, 5 x 65 Interference protection depending on additional circuit DIN 40839 T4 (100V/m) 30 V, 1 min. IEC 529, IP 66 10 g Threads: 09/2008 | A2C59512780 | We reserve the right to make changes in availability as well as technical changes without prior notice. [. . . ] Continental Trading GmbH | Heinrich-Hertz-Strasse 45 | 78052 Villingen-Schwenningen | Germany E-mail: tachograph@vdo. com | www. vdo. com VDO ­ A Trademark of the Continental Corporation Sender Unit [. . . ]