HP 3326A Operating And Reference Manual page 72

Marker I Z-Blank1 X-Drive O u t ~ u t s
X-Drive Out
X-DRIVE OUT
During sweep operation, the rear panel X-DRIVE OUT connector provides a 0 to 10 or
10 to 0 volt linear ramp proportional to the sweep time. Figure 1-30 illustrates a typical
@
circuit that uses X-DRIVE OUT to control the horizontal deflection of the oscilloscope
' 0 .10 '1,':
display.
Triangle Linear
X-DRIVE OUT increases from 0 to 10 volts for the sweep from the start frequency to
the stop frequency and decreases from 10 to 0 volts for the sweep from the stop fre-
quency to the start frequency.
Ramp Linear Sweep
X-DRIVE OUT increases from 0 to 10 volts for the sweep from the start frequency to
the stop frequency. At the end of a sweep the output is reset to 0 volts.
Discrete Frequency Sweep
Normally, X-DRIVE OUT increases linearly from 0 to 10 volts during the total sweep
time. If the total sweep time is between 1000 and 1024 seconds, X-DRIVE OUT increases
at the lowest sweep rate with a maximum output of 10.24 volts. If the sweep time ex-
ceeds 1024 seconds, the output voltage is reduced to 0 volts and the cycle is repeated.