Manufacture date based on serial number?

Mrmikerat

New member
Can anyone tell me what the manufacturing date is for my DFF-1 Network Sounder?

The serial is 8858-3196


Thank you!
 
Unfortunately, I can't tell the date but according to a Service Advisory it was made before 2019.
 
Unfortunately, I can't tell the date but according to a Service Advisory it was made before 2019.
Can you tell me the year of manufacture this GP-1971 serial number 1001-6510-0080 or if it was manufactured before or after 2022. This is to tell if it has a Screen Resolution: WVGA 800 x 480 pixels. or for units manufactured 2022 or later HD 1280 x 720 pixels.
What was the starting serial number for HD 1280 x 720 pixels units?
 
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