Specifications

molbox™ RFM™ OPERATION AND MAINTENANCE MANUAL
© 1998-2007 DH Instruments, a Fluke Company Page 88
3.6.6.1 COM1 AND COM2
The COMx ports can be set for the specific settings required by the user.
The settings are baud rate, parity, data bits and stop bits. The available options are:
Table 18. COM1 and COM2 Available Settings
BAUD RATE
300, 600, 1 200, 2 400, 4 800, 9 600, 19 200
PARITY
NONE, ODD or EVEN
DATA BITS
7 or 8
STOP BITS
1 or 2
The default COMx settings are 2400, E, 7,1 for both COM ports.
The molbox RFM appends a carriage return (<CR>) and a line feed (<LF>) to all
messages that are sent out of the COM1 port to the host. It looks for a carriage
return to terminate incoming messages and ignores line feeds. The user MUST
wait for a reply to each message sent to the molbox RFM before sending another
message to it (see Section
4.2.1).
3.6.6.2 IEEE-488
The IEEE-488 port address can be defined from 1 to 31. The default address is 10.
The molbox RFM sends a line feed (<LF>) and asserts the EOI line at the end of
all transmitted messages. It looks for a line feed and/or assertion of the EOI line
to terminate incoming messages (see Section 4.2.2).
3.6.6.3 RS232 SELF-TEST
The RS232 self-test is provided to check the molbox RFM COM ports and the
interface cable independently of an external device or computer.
If you are having difficulty communicating with molbox RFM from a host
computer using RS232, the RS232 self test can help establish that the molbox
RFM COM1 port you are trying to communicate with and the interface cable you
are using are good.
To run a self test of the RS232 ports (COM1 and COM2), press [SPECIAL] and
select <6remote>, <4RS232test>.
The display prompts you to connect COM1 to COM2 using a standard pin-to-pin
DB-9F to DB-9M RS232 cable (see Section
4.2.1.1).
Once the cable has been installed, press [ENTER] to run the self-test. The test
is first executed in the COM1→COM2 direction and then in the COM2→COM1
direction.
If the COM1→COM2 test
passes: <PASSED> displays briefly and the test
proceeds to COM2→COM1.
If COM2→COM1 passes: <PASSED> is displayed briefly followed by the
conclusion, <molbox RFM RS232 test has PASSED>.
If a test fails: Execution is suspended until [ENTER] is pressed.