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Thermo Ramsey - Hoferick Engineering GmbH

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Table 2-11: Motherboard Wiring Configuration TB 3 – RS-232 Communications<br />

Motherboard<br />

RS-232 Communications<br />

TB 3<br />

25 Shield<br />

23 CTS<br />

24 Common<br />

22 RxD<br />

21 TxD<br />

20 RTS<br />

Maximum cable length 50 ft<br />

Use Beldon 9538 or equivalent<br />

Table 2-12: Motherboard Wiring Configuration TB 3 – 20mA Serial Communications<br />

Motherboard<br />

20 mA Serial<br />

Communications<br />

TB 3<br />

25 Shield<br />

26 +20 mA (out)<br />

27 -20 mA (out)<br />

28 +20 mA (in)<br />

24 -20 mA (in)<br />

Maximum cable length 4000 ft<br />

Use Beldon 9829 or equivalent<br />

<strong>Thermo</strong> Fisher Scientific Operation<br />

REC 4175 Rev B<br />

Operation<br />

2-15

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