SCSI to CF (ACARD AEC-7722) mounting bracket for Agilent 16702B Logic Analyzer

thingiverse

This is a bracket to install an ACARD AEC-7722 SCSI to IDE adapter with a Syba CF to IDE adapter inside an Agilent (HP) 16702B logic analyzer. This replaces the old, loud, and slow OEM SCSI drive with a silent and fast CF card. This may also work for others in the 16700 series, but I can't confirm. This bracket attaches to the original tray used to mount the OEM hard drive using the same screw holes. All holes are sized for an M3 sized screw. The adapter hangs off the side of the tray in order for the SCSI cable to reach without much trouble (note that the side is also raised to provide clearance above the adjacent PCB components). The cable has to be slightly adjusted due to the difference in connector position relative to the OEM drive. These ACARD adapters are available for about $20 on ebay, though they're not plug and play. As-is, they only work with CD/DVD drives... to work with IDE hard drives, you need to reflash with the AEC-7726 firmware (if you're here, I assume you know this - if not, an internet search should describe everything you need to know). Additionally, these units have a 68-pin SCSI connector, while the 16702B uses a 50-pin SCSI cable. To adapt to the 50-pin connector, I'm using this adapter I designed, soldered to the bottom of the board: https://github.com/pdaderko/16702B/tree/main/SCSI_50_to_68_female (this one works as well: https://github.com/pdaderko/16702B/tree/main/SCSI_50_to_68_male ). Note that some other 68 to 50 pin SCSI adapters don't work because they tie the upper data and parity lines to GND instead of pulling up to TERMPWR. With this adapter, the boot time has dropped to 2:46, compared to 3:13 with the OEM hard drive, and most noticeably, the unit is much quieter without the loud hard drive clacking.