HP 59309A

The Hewlett-Packard 59309A is an HP-IB digital clock.

This is a really nice little clock made entirely from TTL ICs. It supports an external time reference input (1MHz, 5MHz, or 10MHz, selectable by a switch on the A2 board) and has an HP-IB interface. The time and date can be set either from the controls hidden under the front panel or via HP-IB commands.

Pictures ^

HP 59309A
HP 59309A showing the date and time
HP 59309A with open panel
HP 59309A (back view)
HP 59309A instructions
HP 59309A (inside view)
HP 59309A boards
HP 59309A A1 display board
HP 59309A A2 backplane/PSU board
HP 59309A A2 backplane/PSU board (back view)
HP 59309A A3 calendar/oscillator board
HP 59309A A3 calendar/oscillator board (back view)
HP 59309A A4 time board
HP 59309A A4 time board (back view)
HP 59309A A5 bus I/O board
HP 59309A bus I/O board (back view)

Documents ^

 

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