American Magnetics 185 & 186 Liquid Level Instruments (CE-Marked) - Manual (Page 75)

Rev. 3 65
Service Guide
Custom Instrument Configurations
488 option, check the primary address setting and make sure the
controller software is set to query the instrument at the primary
address selected.
3. Check your host communications software and make sure it is
recognizing the return termination characters from the instrument.
For serial communication, the return termination characters are
<CR><LF>
. For IEEE-488, the return message termination
characters are <LF> with EOI.
4. If the instrument is responding repeatedly with -8 as the return
message, try a device clear command (DCL) or powering the
instrument off and then back on. Be sure you are sending valid
commands.
5. If you experience continued trouble with the IEEE-488 option, you
may have an incompatible IEEE-488 card in your host computer. In
the past, AMI has found subtle differences between manufacturers
of IEEE-488 cards that have introduced communication errors.
AMI attempts to establish compatibility with as many products as
possible, however it is difficult to test every card available. Contact
AMI directly if you have thoroughly checked your setup and
continue to experience problems with the IEEE-488 option.
6. Version 2.6 of the NI-488.2 drivers from National Instruments has
known bugs that prevent the correct operation of the IEEE-488
interface when executed from LabVIEW. Contact National
Instruments for workarounds appropriate for your configuration.
If the cause of the problem cannot be located, contact an AMI customer
service representative at (865) 482-1056 for assistance. Do not send the
unit back to AMI without prior return authorization.
7.2 Custom Instrument Configurations
7.2.1 Modifying the line voltage requirements
Warning
Before removing the cover of the instrument, remove the power from
the instrument by disconnecting the power cord from the power
receptacle. Failure to do this could expose the user to high voltages
and could result in life-threatening electrical shock.
Caution
The Model 185/186 instrument operates on 50-60 Hz power and
may be configured for 110-120 or 208-240 VAC ±10% (100 or 200