Optional Hardware and Software Model 360E Instruction Manual

5.4.4. Zero/Span Valve with External CO2 Scrubber (Option 53)

Option 53 is operationally and pneumatically identical to Option 52 above (See Section5.4.3), except that the
zero air is generated by an externally mounted zero air scrubber filled with indicating soda-lime that changes
color from white to pink as it becomes saturated.
5.5. Communication Options

5.5.1. RS232 Modem Cable (Option 60)

The analyzer can have come standard with a shielded, straight-through DB-9F to DB-9F cable of about 1.8 m
length, which should fit most computers of recent build. This cable can be ordered as Option 60.
Option 60A consists of a shielded, straight-through serial cable of about 1.8 m length to connect the analyzer’s
COM1 port to a computer, a code activated switch or any other communications device that is equipped with a
DB-25 female connector. The cable is terminated with one DB-9 female connector and one DB-25 male
connector. The DB-9 connector fits the analyzer’s COM1 port.
Some older computers or code activated switches with a DB-25 serial connector will need a different cable or an
appropriate adapter.

5.5.2. RS-232 Multidrop (Option 62)

The multidrop option is used with any of the RS-232 serial ports to enable communications of up to eight
analyzers with the host computer over a chain of RS-232 cables via the instruments COM1 Port. It is subject to
the distance limitations of the RS 232 standard.
The option consists of a small printed circuit assembly, which is plugs into to the analyzer’s CPU card (see
Figure 5-4) and is connected to the RS-232 and COM2 DB9 connectors on the instrument’s back panel via a
cable to the motherboard. One option 62 is required for each analyzer along with one 6’ straight-through, DB9
male DB9 Female cable (P/N WR0000101).
This option can be installed in conjunction with the Ethernet option (Option 63) allowing the instrument to
communicate on both types of networks simultaneously. For more information on using and setting up this
option (See Section 6.11.7)
Rear Panel
(as seen from inside) CPU Card
Multidrop
Card
Figure 5-4: M360E Multidrop Card
44 05232 Rev B3