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Teledyne API – Model T700 Dynamic Dilution Calibrator Getting Started
53
11. On the rear panel of each analyzer, adjust the DCE DTE switch (see Figure 3-4 and
Section 5.1) so that the green and the red LEDs (RX a
nd 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 Sectio
n
3.3.1.7: Connecting the Communications Interfac
es, “RS-232 Connection”).
Analyzer Analyzer Analyzer Last Analyzer
Female DB9
Male DB9
RS-232
COM2
RS-232
COM2
RS-232
COM2
RS-232
COM2
Host
RS-232 port
Ensure jumper is
installed between
JP2 pins 21
22 in
last instrument of
multidrop chain.
Figure 3-16: RS-232-Multidrop PCA Host
/Analyzer Interconnect Diagram
12. BEFORE communicating from the host, power on the instruments and check that the
Machine ID code is unique for each (Section 4.7.1).
a. In the SETUP Mode men
u go to SETUP>MORE>COMM>ID. The default ID is
typically the model number or “0”.
b. to change the identification number, press the button below the digit to be changed.
c. Press/select ENTER to accept the new ID for that instrument.
13. Next, in the SETUP>MORE>COMM>COM1 menu (do not use the COM2 menu for
multidrop), edit the COM1 MODE parameter as follows: press/select EDIT and set only
QUIET MODE, COMPUTER MODE, and MULTIDROP MODE to ON. Do not change
any other settings.
14. Press/select ENTER to accept the changed settings, and ensure that COM1 MODE now
shows 35.
15. Press/select SET> to go to the COM1 BAUD RATE menu and ensure it reads the same
for all instruments (edit as needed so that all instruments are set at the same baud rate).
06873B DCN6388