468: Difference between revisions
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==Repair issues== | ==Repair issues== | ||
Many 468s used Mostek MKB36000 masked ROMs that can suffer from "ROM rot". It may be necessary to replace the 160-0459-01 and 160-0759-01 ROMs with 2764 EPROMs through a 2364/2764 adapter. | Many 468s used Mostek MKB36000 masked ROMs that can suffer from "ROM rot". It may be necessary to replace the 160-0459-01 and 160-0759-01 ROMs with 2764 EPROMs through a 2364/2764 adapter. | ||
Another option might be using the [[MCM68766]] EPROM. | |||
<gallery> | <gallery> | ||
468_new_rom.jpeg | replaced ROM by 2764 with homemade 2364/2764 adapter | 468_new_rom.jpeg | replaced ROM by 2764 with homemade 2364/2764 adapter |
Revision as of 12:01, 29 August 2019
The Tektronix 468 is a digital/analog scope, essentially a 465B with an added 25 MS/s 8 bit digitizer.
Specifications
- Digital mode: Sampling rate 25 MS/s, bandwidth 10 MHz (sine)/2.5 MHz (pulse), resolution 8 bit
- Analog mode: 100 MHz bandwidth
- GPIB option
- please add more ...
Repair issues
Many 468s used Mostek MKB36000 masked ROMs that can suffer from "ROM rot". It may be necessary to replace the 160-0459-01 and 160-0759-01 ROMs with 2764 EPROMs through a 2364/2764 adapter. Another option might be using the MCM68766 EPROM.
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replaced ROM by 2764 with homemade 2364/2764 adapter
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Result of bad ROM by verification-check.
ROM images
Links
Pictures
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front
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top
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right
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left
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bottom
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rear