The Goldstar OS-9020A is a two-channel 20 MHz oscilloscope capable of handling up to 300 V of input voltage. The OS-9020A features a Z-axis input with a GoldStar OS-9000SRS Operation Manual.pdf, 08/12/15, English Operation Manual for OS-9020A, OS-902RB, OS-9040D, and OS-904RD, 9111 kB, 839 The OS-9020A from Goldstar, part of the OS, is a Benchtop oscilloscope with a maximum bandwidth of 20 Mhz. The oscilloscope features 2 analog channels, 0 OSCILLOSCOPE OS-9020G SERVICE MANUAL @ LG Precision Co., Ltd. . specific differences between this Manual and the servicing unit, please contact GoldstarDownload GOLDSTAR OS-9020P SM service manual & repair info for electronics experts. GoldStar OS-9020A Oscilloscope. OS-9020A. Owners manual and Schematic available for. OS-9020A OS902RD OS-9040D OS-904RD in .pdf of about 34Mb for $20us see