hp35665a
Would you guys like a scanned PDF of the four-page product description from the Tek 1993 catalog? About 1.8 megabytes.
**broken link removed**
Here are some possibly helpful words from that catalog:
MINIMUM PC REQUIREMENTS
Fourier Analyzers operate with an IBM PC, XT, AT, PS/2 or 100%
compatible having the following minimum configuration: DOS 3.0 or
higher, RAM - 640 kilobytes. One 3.5 or 5.25 in. floppy drive and
20 megabyte Hard Drive, One RS-232-C serial port, Intel 8087,
80287, or 80387 Co-processor, Enhanced Graphics Adapter (EGA),
Monochrome or color EGA monitor (Second serial port and mouse
recommended).
A serial port?