isotech isr 650 oscilloscope

Discussion in 'Electronics Resources' started by FreeThinker2010, Oct 12, 2010.

  1. FreeThinker2010

    Thread Starter New Member

    Oct 12, 2010
    HI can any one help me with a service manual for this scope or info on the original maker (Isotech is the bagde name of RS who sell the scope)It's a duel channel 50mhz with delay sweep.My problem is that at high sweep rates the trace is very dim, but is bright enough when the intensify button is pressed, ie the cro gun appears to be ok and can display a bright trace but in normal sweep the trace is biased too low.The intensity knob is fully clockwise.
    Thanks in advance