UNISource Corporation FC-8300 Operation Manual page 12

POWER SWITCH
TILT STAND
AC INLET
INT/EXT TIME BASE SELECTOR: Select the time base, switch position EXT.
GROUND TERMINAL
FUSE HOLDER
INT/EXT TIME BASE BNC: Serves as a monitoring point for the internal time
1.800.561.8187
cycles of the input A signal and continuously displays
that count.
f. T.l (A→B). When this mode is selected, the unit
measures the time interval from an edge of the input A
signal to an edge of the input B signal. Positive going or
Negative going edge of each signal is selected By the
slope switches.
g. RATIO (A/B). When this mode is selected, the unit
measures the ratio of input A frequency to the input B
frequency.
: Push in the unit ON and push out the unit power OFF.
: Pull out to adjust Tilt.
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FIG (3) REAR PANEL
:For connecting of the supplied ac power
STD.IN provides a nominal 50Ω input impedance path
for an external 10 MHz time base. switch position
INT. STD. OUT monitors the internal time base
signal.
:Replacing fuse with unscrewing
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