https://www.ttid.co.uk/manufacturer/vti-instruments
VTI Instruments | TTid
An overview of the manufacturer VTI Instruments and a listing of their product ranges
vti instrumentsttid
https://psirep.com/products/vti-instruments-smp75xx-76xx-open-collectorrelay-drivers-and-programmable-loads
VTI Instruments - SMP75xx / 76xx Open-collector/Relay Drivers and Programmable Loads | PSI...
The SMP7500 is a 96-channel 300MA open-collector/relay drivers, and the SMP7600A (pictured) and SMP7600A-S-11351 are 5 W programmable loads.
vti instrumentsopen collectorrelaydriversprogrammable