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Teledyne API – T101 Operation Manual Operating Instructions
117
Figure 4-9. 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 4-10 use straight-through DB9 male DB9 fem
ale
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,
“Communication Cables” a
n
d the preceding subsection, “RS-232
Connection”).
07266B DCN6485