Maintenance - Aim TTi LCR400 Manuel D'instructions

Calibration Specific Commands
See Service Manual for details of calibration specific commands.
Error Numbers
The instrument responds to the controller after every command with 'OK' if the command was
completed successfully or with 'ERRnn' if the command was not accepted. Commands will not
be accepted if the command is correct but the parameters are out of range (e.g. 'FREQ 5' will
return 'ERR1') or if the command is correct but cannot be implemented (e.g. ZEROCON with
resistance selected). In the case of '?' commands the error is returned if there is nothing set up
to return, e.g. 'ERR8' if no Hi limits have been set for the selected bin. Neither 'OK' nor 'ERRnn'
are returned if the command cannot be recognised.
Error Code List
The commands associated with the various error numbers are as follows:
Error No. Command
1 FREQ <nr1>
2 FUNC <nr1>
3 MODE <nr1>
4 ZEROCON
5 ZEROCOFF
6 BINNOM <nr1>,<nrf>
7 BINNOM? <nr1>
8 LIMHI? <nr1>
9 LIMLO? <nr1>
Error 18 is returned in response to READALL? if there is no valid measurement, e.g. display
shows overrange.
The Manufacturers or their agents overseas will provide a repair service for any unit developing a
fault. Where owners wish to undertake their own maintenance work, this should only be done by
skilled personnel in conjunction with the service manual which may be purchased directly from
the Manufacturers or their agents overseas.
Cleaning
If the instrument requires cleaning use a cloth that is only lightly dampened with water or a mild
detergent.
WARNING! TO AVOID ELECTRIC SHOCK, OR DAMAGE TO THE INSTRUMENT, NEVER
ALLOW WATER TO GET INSIDE THE CASE. TO AVOID DAMAGE TO THE CASE NEVER
CLEAN WITH SOLVENTS.
Connector Contact Cleaning
Ensure the contact surfaces of the Kelvin connectors are free from contamination. The contacts
of both the built–in connectors and the axial adaptors are made of high quality stainless steel but
they can pick up contamination from the environment or from component leads inserted into the
connector. Occasionally clean the connectors by inserting a piece of clean stiff card between
them and lightly pushing back and forth. In extreme cases the card may be moistened with a
little suitable cleaning solution.
Error No. Command
10 LIMHI <nr1>,<nrf>
11 LIMLO <nr1>,<nrf>
12 SORTON
13 RCL <nr1>
14 RST
15 SAV <nr1>
16 *LRN?
17 LRN <data>
18 READALL?

Maintenance

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