Originally Posted by
lasermaster1977
Just happen to have all my GS product brochures, product articles and price lists, circa 1977 thru around 1985.
The first optical scanner offerings included the G-060, G-100, G-200 and G-300. Then they came out with the G-100PD, G-100PDT, G-300PD and G-300PDT. PD = Position Detection, PDT = Position Detection with Thermal blanket for thermal stability. Then there were their resonant scanner "S" series, S-100 and S-200.
In the GS 1979 "Series G Optical Scanner" line sheet, the G-series broke out into different sub-models based on their peak-to-peak scan angles. (G-0606, G0612, G-102, G-108, G-112, G-115, G-124, G-302, G-306, G-310, G-320 and, G-330). The G-06xx were high-speed resonant scanners.
In 1978, one of the earliest price lists I got from GS shows they sold the G-100's for $205/ea, the G-100PD's for $405/ea. At the time in late 1977, I could only afford to buy 4 pairs of G-115 open loop scanners for RYGB at the $205/ea. price. Just months later the prices jumped up to $245/ea. and $495/ea. respectively.
The early to mid-80's brought about the G120D, GF220D, G325D and G250D (this from a GS 1983 color marketing brochure). On these models D=PD, they just dropped the "P" and at this time they provided a DB-15 connector with the scanner that terminated the coil wires and the position detection/thermal blanket wires. Their resonant scanner line had expanded at this time to the IFS, IDS and ISX models. IFS scanners could achieve a resonant scan of 3,937 Hz, IDS 600-3,000 Hz, ISX 100-250 Hz.
Well, so that's a tiny glimpse into the past.