Heathkit H88 and H89 Information

This document was updated on Monday, 28 March 2005.
Internal changes only; no changes to content.


Warning

There are dangerous voltages inside this unit (up to 15,000 volts). Be very careful when performing the following adjustments. If in doubt, have a qualified professional adjust the unit for you.

CPU Board Switch Settings

Switch S501
Switch Section Default Setting Description
0 0 Not used; leave at 0
1 0 Not used; leave at 0
2 0 Not used; leave at 0
3 0 Not used; leave at 0
4 0 Not used; leave at 0
5 0 Performs RAM memory test at reset. Must be set to 1 to stop.
1 Normal
6 0 Sets the baud rate to 9600 when both switches are at 0. Other positions are undefined.
7

For adjustments on the Terminal Logic Board and the Video Board, refer to the H19 Web page.


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