Test Products International 460 - Manual (Page 40)

17. Select the correct baud rate for your computer and press F4 (ENTER). Refer to Appendix
D for other RS-232 interface details.
18. While still in the USER / CONTRAST Menu, select F4 to activate the POWER DOWN menu.
Then press ENTER. The resulting display should be similar to the following one:
19. Use he Up/Down arrow buttons to select 10-Mins, then press F4 to enter command.
Note the local time that the unit should switch off. If the unit switches off at any other
time, then the internal sequencer is incorrectly set and will need to be adjusted. Note
that you can continue to use the 460 in any way you choose up until it automatically
powers down.
20. This is the end of the general sequence test. If any problems were found with
sequencing, other column type lists that were not included should also be checked.
For general operational tests, refer to Chapters 2 and 4.
Calibration
Most calibration adjustments are carried out at the service facility or factory, however the follow-
ing tests and adjustments can be made in the field. If you established that the instrument or
attachments are out of alignment and/or are not measuring within the confines of the specifica-
tions, call your local service representative or the number at the front of this manual for the cor-
rect address to return your parts to for test and calibration.
Always use a known or reliable standard when making a test measurement. For instance,
when testing a resistance scale, use only high tolerance parts. E.g.: +/- 1%
Check that the accessories such as test leads are the correct type for the entity being
measured (some test leads have their own specifications and are usually supplied with
the product.
460 User s Guide Test and Calibration
A-8