DH Instruments MFC-CB, Руководство по эксплуатации и обслуживанию

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3. OPERATION
Page 45
©2001~2007 DH Instruments, a Fluke Company
3.4.4 <4CAL>
 PURPOSE
To view and edit MFC-CB electrical signal calibration coefficients and calibration date.
The MFC-CB CALIBRATION function is considered part of MFC-CB maintenance and is
therefore covered in the Maintenance, Adjustments and Calibration Section of this
manual (see Section 5).
3.4.5
<5REMOTE>
 PURPOSE
To configure the MFC-CB COM1, COM2 and IEEE-488 communication ports. To test
COM1 and COM2 communications.
 PRINCIPLE
The MFC-CB has two RS232 communications ports referred to as COM1 and COM2 and
a single IEEE-488 port. COM1 and the IEEE-488 port are for communicating with a host
computer (see Section 3.4.5). COM2 is reserved for communicating with an external
device (e.g., a multimeter, molbox, second MFC-CB, etc.). All the communication ports
can be set up from the MFC-CB front panel.
MFC-CB provides a self-test for its RS232 communication ports. The self-test allows
verification that the MFC-CB RS232 ports (COM1 and COM2) are operating properly and
that a valid interface cable is being used.
The RS232 test has two steps:
n COM1 sends a message to COM2.
o COM2 sends a message to COM1.
In each step, MFC-CB checks the message received at the receiving COM port. If the
receiving COM port times out or receives an incorrect message, that step of the test fails.
 OPERATION
To access the port configurations, press [SPECIAL] , <5remote> .
Select <1COM1> , <2COM2> , or <3IEEE-488> to view and/or edit that port’s settings.
Press [SPECIAL] , <5remote> , <4RS232test> to access the RS232 self-test.