Teufelwolf
Member
So I picked up a Tenma 72-3055 Dual Trace Analog Oscilloscope as an impulse buy (it was $50.00 shipped).
Ok, so it powers on, and it seems to do things when I move the time base and vertical on input #2. #1 seems to be have an issue with the horizontal, but I am not sure if it is the scope's insides, or if the knob is stripped, it has a very lose feel to it. Can not figure out how to get the knob off to check, it is one of those knobs with an outer ring, and inner knob that also pulls out. The out ring has a small hole, but I can't tell if is is a screw or some sort of hex nut.
It came with one probe, basically a BNC connector, cable to a probe. Now looking at pictures of other oscopes, I notice that most (all?) have a probes that have probe tip, and a ground wire. This one doesn't. The O-scope does have a ground connector. Do I need a probe with a ground clamp, or can I just clip the o-scope ground to the circuits ground?
Anyone have any experience with these, any tips pointers? I am just using it for very basic projects and experiments most on breadboards at this time.
Ok, so it powers on, and it seems to do things when I move the time base and vertical on input #2. #1 seems to be have an issue with the horizontal, but I am not sure if it is the scope's insides, or if the knob is stripped, it has a very lose feel to it. Can not figure out how to get the knob off to check, it is one of those knobs with an outer ring, and inner knob that also pulls out. The out ring has a small hole, but I can't tell if is is a screw or some sort of hex nut.
It came with one probe, basically a BNC connector, cable to a probe. Now looking at pictures of other oscopes, I notice that most (all?) have a probes that have probe tip, and a ground wire. This one doesn't. The O-scope does have a ground connector. Do I need a probe with a ground clamp, or can I just clip the o-scope ground to the circuits ground?
Anyone have any experience with these, any tips pointers? I am just using it for very basic projects and experiments most on breadboards at this time.