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Product Service: Domestic 1-800-522-7658, International 816-333-8811
Chapter 6: Modifying Your Freeze Dryer
Pin 6 – Collector Temperature
Output: -68°C = 0 VDC
+32°C = 1 VDC
Pin 7 – Blank
Pin 8 – Blank
Computer Connection
Connection diagrams for RS232 interface from
Labconco equipment to a computer that supports either
a 25 pin D-sub male connector or 9 pin D-sub male
connector for serial communication. See Appendix D:
Freeze Dryer Accessories for available connection
cables.
Computer with a 25 pin male serial connector
View from back of computer
3-RX (Receive Data)
4-RTS (Request to Send)
5-CTS (Clear to Send)
6-DSR (Data Set Ready)
7-GND (Signal Ground)
8-DCD (Data Carrier Detect)
20-DTR (Data Terminal Ready)
View from front of Labconco
Freeze Dryer
1-TXD (Transmit Data)
4-AGND (Analog Ground)
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