Debugging IEEE-488 communications can be more difficult since it is so much
more complex. The 3560 Module has a diagnostic mode that can help in trou-
bleshooting communication problems. Issuing the command “*DIA” to the
3560 Module RS-232 port enables the diagnostic mode. Diagnostic information
will be printed from the 3560 Module RS-232 port and can be viewed on your
computer. You will be able to see how commands are received at the IEEE-488
port and monitor the value of the IEEE-488 status byte register (see Section
6.5.10.9). If the IEEE-488 port does not seem to be receiving any data check
that the GPIB addresses are correct (see Section 14.4.3). Also check the cable.
If commands are being received but your computer is not receiving any data
from the 1560 in response to the command check that the termination character
is set correctly (also Section 14.4.3). Setup your software so that it does not re-
quire the EOI message.
16.4
Blank Screen
The screen lights up when the 1560 is switched on but the screen appears
blank.
This problem can be caused by improper adjustment of the contrast. After the
power is switched on allow the 1560 at least one minute to complete its self test
and power on sequence. Then, try to adjust the contrast using the contrast
buttons.
16.5
Error Message at Power Up
The 1560 reports an error during the power up self-test.
On power up the 1560 performs a series of self-tests to check the operation of
all its components and each of the modules. The results of the self-tests are re-
ported on the screen. Normally, all tests will report “OK.” A failure of one or
more component will cause error messages to be reported. A bus error, a mod-
ule error, a failure to recognized a module, or a “BATTERY BACKED RAM”
error is often caused by a module being improperly attached in which case the
base will not be able to properly communicate with that module and those be-
hind it. Try reattaching the module while ensuring that the bus connectors are
all fully inserted. If this does not solve the problem it may be caused by a dam-
aged module or the failure of a component within the module such as the fuse.
This and other types of component failures generally require a qualified factory
technician to replace the faulty component. Contact a Hart Scientific Autho-
rized Service Center for assistance (see Section 1.3).
16.6
CE Comments
16.6.1
EMC Directive
Hart Scientific's equipment has been tested to meet the European Electromag-
netic Compatibility Directive (EMC Directive, 2004/108/EC). The Declaration
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16 Troubleshooting
Blank Screen
