Teledyne 6200E - Sulfides Analyzer - Manual (Page 104)

Operating Instructions Model 6200E Instruction Manual
104 M6200E Rev: A1
The signals from these two connectors are routed from the motherboard via a wiring harness to
two 10-pin connectors on the CPU card, CN3 (COM1) and CN4 (COM2).
CN3 & CN4
(Located on CPU card)
(As seen from inside analyzer)
TXD GND
2 4 6 8 10
1 3 5 7 9
RXD RTS
CTS
Figure 6-8: CPU connector Pin-Outs for COM1 & COM2 in RS-232 mode.
Teledyne Analytical Instruments offers two mating cables, one of which should be applicable for
your use.
• Part number WR000077, a DB-9 female to DB-9 female cable, 6 feet long. Allows
connection of COM1 with the serial port of most personal computers. Also available as
Option 60 (Section 5.6.1).
• Part number WR000024, a DB-9 female to DB-25 male cable. Allows connection to the most
common styles of modems (e.g. Hayes-compatible) and code activated switches.
Both cables are configured with straight-through wiring and should require no additional adapters.
To assist in properly connecting the serial ports to either a computer or a modem, there are
activity indicators just above the COM1 port. Once a cable is connected between the analyzer and
a computer or modem, both the red and green LEDs should be on. If the lights for COM 1 are not
lit, use small switch on the rear panel to switch it between DTE and DCE modes (see Section
6.10.5). If both LEDs are still not illuminated, check the cable for proper wiring.
The two LEDs located over COM2 are currently deactivated. If you have problems getting COM2 to
activate, it may be necessary to install a null-modem cable (contact customer service for
information).
6.10.4. RS-485 Configuration of COM2
As delivered from the factory, COM2 is configured for RS-232 communications. This port can be re-
configured for operation as a non-isolated, half-duplex RS-485 port capable of supporting up to 32
instruments with a maximum distance between the host and the furthest instrument being 4000
feet. If you require full-duplex or isolated operation, please contact Teledyne Analytical
Instruments Customer Service.
• To reconfigure COM2 as an RS-285 port set switch 6 of SW1 to the ON position(see Figure
6-9).