Teledyne 9110T instruction manual Jumper and Cables for Multidrop Mode

Model 9110TH NOx Analyzer Getting Started

1. (Note that the CPU’s COM2 connector is not used in Multidrop)

∙J4 on the Multidrop/LVDS PCA to J12 on the motherboard

∙J1 on the Multidrop/LVDS PCS to the front panel LCD

Figure 3-15: Jumper and Cables for Multidrop Mode

2.(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 3-16 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, “Communication Cables” and Section 3.3.1.8: Connecting the Communications Interfaces, “RS-232 Connection”).

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