LOGIC PROBE
MODEL LP-560
• TESTS ALL LOGIC FAMILIES (TTL, LSI, CMOS, ECT)
• CAPTURES PULSES TO 25ns (20MHz)
• AUDIO BEEPER, TWO SOUNDS HI & LOW
• MEMORY FUNCTION
SPECIFICATIONS
Working Voltage
4-18VDC
Frequency Response
20MHz
TTL:
Logic “1” (HI LED)
>2.3 +0.2VDC
Logic “0” (LO LED)
<0.8 +0.2VDC
CMOS: Logic “1” (HI LED)
>70% Vcc +10%
Logic “0” (LO LED)
<30% Vcc +10%
Minimum Detectable
Pulse Width
25ns
Input Impedance
1M
Ω
Input Overload Protection
+220VAC/DC, 15s
Supply Voltage Protection
+20VDC
Pulse Indicator Flash Time
500ms
Operating Temperature
32° - 122°F
USER INSTRUCTIONS
1. Set the TTL/CMOS switch to the correct logic
and the PULSE /MEM to PULSE.
2. Connect the red alligator clip to the positive
(+) supply and the black alligator clip to the
negative (–) supply of the test unit.
3. Touch the point to be tested with the probe tip
and refer to the chart below:
- LED on - LED off - LED Blinking - LED may be on or off
Memory Mode
1. Touch the point to be tested and set
PULSE/MEM switch to MEM. The pulse LED
lights with the first transition. The LED stays lit
until its reset by switching to the PULSE position.
Elenco
®
Electronics, Inc.
150 Carpenter Ave.
Wheeling, IL 60090 U.S.A.
www.elenco.com
(847) 541-3800
Made in CHINA
INPUT
SIGNAL
LED STATES
HIGH LO PULSE
SOUND
Logic tip is not connected or bad logic
level.
Low
Logic “0”, no pulse activity.
High
Logic “1”, no pulse activity.
Low
Logic “0”, with positive single pulses.
High
Logic “1”, with negative single pulses.
Low/High
Square wave <200kHz.
Low/High
Square wave >200kHz.
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