PPCH-G™ OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company
Page 74
command but responds with both and ASCII(13) (carriage return) and an
ASCII(10) (line feed). There are no other options.
3.5.2.2
<3IEEE-488>
The IEEE-488 port’s primary address can be set from 1 to 31 in this screen.
The factory default value is 10. Secondary addressing is not used or supported.
This address must not conflict with the address of any other device on the same
IEEE-488 bus.
The receiving terminating character must be a line feed and EOI. Carriage returns
are ignored if received. The PPCH-G sends a line feed and asserts the EOI line
to terminate a reply. These settings are fixed to agree with IEEE Std. 488.2. If
you change the address, the IEEE interface will reset (PON) and become idle.
3.5.2.3
<4FORMAT>
The PPCH-G has two different syntax formats available for the remote program
commands. The
classic
format is compatible with previous PPC products and is
the default format. The
enhanced
format follows the syntax, format, and status
reporting features of IEEE Std 488.2. The details of each are covered in
Section 4.3.
[SPECIAL]
,
<2remote>
,
<4format>
allows the remote program command
syntax to be selected. The cursor is on the active format. Select
<1classic>
to
activate the classic command format or
<2enhanced>
for the enhanced format.
Selecting a format resets the IEEE-488 interface and puts it into an idle state.
3.5.2.4
<5RS232 SELF-TEST>
The RS232 self-test is provided to check the PPCH-G COM ports and the
interface cable independently of an external device or computer.
If you are having difficulty communicating with PPCH-G from a host
computer using RS232,
the RS232 self test can help establish that the PPCH-G
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]
,
<2remote>
,
<5RS232test>
.
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
[ENT]
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,
<The RS232 test
has PASSED>
.
If a test fails:
Execution is suspended until
[ENT]
is
pressed.
