Brookfield DV-III Rheometer - Manual (Page 60)

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When connecting the DV-III to a serial printer, use Brookfield Printer Cable (Part No. DVP-81). The
cable connections are:
Printer RxD (usually pin 3) to DV-III TxD (pin 3)
Printer Txd (usually pin 2) to DV-III RxD (pin 2)
Printer ground (pin 7) to DV-III serial ground (pin 5)
When connecting a computer to the DV-III, use Brookfield Computer Cable (Part No. DVP-80). The
cable connections are:
Com Port RxD (pin 2 (9 pin) or pin 3 (25 pin) to DV-III Txd (pin 3)
Com Port Txd (pin 3 (9 pin) or pin 2 (25 pin) to DV-III RxD (pin 2)
Com Port ground (pin 7) to DV-III Serial Ground (pin 5)
In both the above cases (printer and computer), the RS232 protocol is implemented as follows:
Baud rate: 9600
Parity:
None
Data bits: 8
Stop bits: 1
Note: Do the following if you supply your own interconnecting cable: On the DV-III end of the
serial cable, jump (connect) pins 4 and 9.