TechNote  40T-027

4470 / 4490  Series

4470 / 4490 SMHS/2 Boards
9-20-90 Mike Auen

Models: 4470 / 4490 Series, All

Summary:
 A new serial interface option board SMHS/2 is now available.

Resolution:
 A new serial interface option board SMHS/2 is now available. This board must be used in conjunction with new 70 / 90 firmware or interfacing problems may occur. The latest firmware revision is 44A513080 / 081 / 083. This firmware compensates for the difference in the clock speed of the SMHS/2 board.

* If a SMHS/2 board is used with older firmware the actual baud rate of the printer will be 2X what shows in the control panel.

* If a SMHS/1 board is used with the new firmware the actual baud rate of the printer will be 1/2 what shows in the control panel.

* If the firmware is changed the printer must be re-initialized.

Any of the above mismatches may or will cause interfacing problems.


Specifications subject to change without notice.
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