UNISource Corporation FC-8300 Operation Manual page 14

LOW PASS FILTER : With this switch pushed in, the input A is routed through
ATT. SWITCH
COUPLE. SWITCH
INPUT A, BNC
GATE TIME SWITCH : This switch select the degree of resolution of the display
HOLD SWITCH
FUNCTION SWITCH : Select the desired operating mode.
POWER SWITCH
TILT STAND
1.800.561.8187
a low-pass filter with a -3 dB point of approximately 100
KHz. When it is released, the input A signal is applied to
the counter.
: When this switch is set to x 10(pushed in) the input A is
attenuated 10:1 before application to the counter with
the switch set to x 1(pushed out), the input A signal is
applied unattenuated. The attenuator has no effect on
the input C.
: The switch is used to select the input coupling, mode
AC or DC.
: Input for frequency measurements below 100 MHz
and all PERIOD, measurement. Female BNC connector
terminated in 1 MΩ. input resistance, shunted by < 40
pF capacitance.
in all modes except TOTAL.
: In hold function, the display held but the counter
continue to increment. When the hold is released, the
display is updated and resumes counting.
a. FREQ. A : When this mode is selected, the counter reads the
frequency of the Input A. Resolution is selected
using the GATE TIME.
b. FREQ. C : When this mode is selected, the counter reads the
frequency of the input C. All readings are in MHz.
c. PERIOD A : When this mode is selected, the counter read the period
of the input A. Resolution is selected using the
GATE TIME.
d. TOTAL A : When this mode is selected, the unit counts cycles of
the input A signal and continuously displays that count.
e. RPM A : When this mode is selected, the unit displays the
RPM(rotation per minute) of the input A signal.
: Push in the unit ON and push out the unit power OFF.
: Pull out to adjust Tilt.
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