Metrohm 788 IC Filtration Sample Processor - Manual (Page 154)

6 Appendix
788 IC Filtration Sample Processor
146
6.4.7 RS232 interface
This diagnosis step tests the functionality of the serial interface.
x Prepare instrument for diagnosis (see section 6.4.2).
x If necessary, press <Ð> several times until
diagnosis
>RS232 test
x <ENTER>
>RS232 test
RS232 test connector ?
x Insert the 3.496.8480 test plug into the RS232 interface without turn-
ing off the instrument.
x <ENTER>
The test runs automatically. If no error occurs, the following appears:
>RS232 test
RS232 test ok
x Remove test plug and press <ENTER>.
diagnosis
>external bus test
6.4.8 External Bus interface
This diagnosis step tests the functionality of parts of the internal EBUS
interface.
x Prepare instrument for diagnosis (see section 6.4.2).
x If necessary, press <Ð> several times until
diagnosis
>external bus test
x <ENTER>
If no error occurs, the following identification appears on the display:
>external bus test
address 0x86 type 3
x <ENTER>
>diagnosis
>beeper test