Operating instructions

71380 Features
The 7880 Time-Base unit provides calibrated sweep rates from 5 seconds to 10
nanoseconds and triggering to 400 megahertz
for 7700-, 7800-, and 7900-series oscilloscopes . A X10
Magnifier increases each sweep rate by a factor of 10 and a VARI-
ABLE TIME/DIV control provides continuously
variable sweep rates between calibrated steps . Variable hold off and alpha-
numeric readout are provided . Also, when operating
in the AUTO TRIGGERING MODE, a bright baseline trace is displayed
in the absence of a trigger signal . The 71380 can be operated as
an independent time base or as a delayed-sweep unit with a com-
panion delaying time-base unit .
1958-1