Teledyne GFC-7001T - Trace CO Analyzer - Manual (Page 57)

Getting StartedTeledyne API – Model T300/T300M CO Analyzer
Teledyne Analytical Instruments 57
Figure 3-16: Jumper and Cables for Multidrop Mode
Note: If you are adding an instrument to the end of a previously configured
chain, remove the shunt between Pins 21
 22 of JP2 on the
Multidrop/LVDS PCA in the instrument that was previously the last
instrument in the chain.
4. Close the instrument.
5. Referring to Figure 3-17 use straight-through DB9 male  DB9 female
cables to interconnect the host RS232 port to the first analyzer’s RS232 port;
then from the first analyzer’s COM2 port to the second analyzer’s RS232
port; from the second analyzer’s COM2 port to the third analyzer’s RS232
port, etc., connecting in this fashion up to eight analyzers, subject to the
distance limitations of the RS-232 standard.
6. On the rear panel of each analyzer, adjust the DCE DTE switch so that the
green and the red LEDs (RX and TX) of the COM1 connector (labeled
RS232) are both lit. (Ensure you are using the correct RS-232 cables
internally wired specifically for RS-232 communication; see Table 1-1:
Analyzer
Options , “Communication Cables” and Section 3.3.1.9:
Connecting the Communications Inerfaces, “RS-232 Connection”).