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3-1. Controls, indicators and connectors
3-1-1. FC-8150U, FC-8030U Universal Counter
GATE INDICATOR
RS-232C INDICATOR: TX(transmitting), RX(receiving) blinking(OPTION)
OVER FLOW INDICATOR : OF is displayed when overflow.
DISPLAY
NOTE: LAST MEASUREMENT DISPLAY WILL REMAIN FOR 10 SECONDS
AFTER SIGNAL OFF.
UNIT INDICATOR
HOLD INDICATOR
TRIG. LEVEL VR
1.800.561.8187
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FIG(2) FRONT PANEL
: The gate light, when lit, indicates the main gate is open
and measurement in progress.
: 9 digit(O.56") green LED display used for all read
readings.
: When lit, indicates that the frequency displayed is in
KHz or MHz, and period is in n, u or mSec.
: When lit, engaged the hold function.
: Adjusts trigger threshold level on the input A input signal.
Pushing the knob in (preset) sets this level at the mid-
point of a symmetrical sinewave input. Pulling the knob
out and rotating it varies the level from negative to
positive around the mid point.
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