Amprobe LP10B Logic-Probes - Manual (Page 8)

4
Operation
Setup
Connect the black alligator clip to ground or common of the circuit under test. Connect the red mini-hook
clip to Vcc of the circuit under test.
Select TTL or CMOS with the TTL/CMOS switch depending upon the type of logic being tested. TTL level is
nominal 0 to 5 VDC and CMOS levels are 0 to 5 – 15 VDC. The PULSE/MEM switch should be in PULSE for Pulse
or Logic level testing.
Using the Logic Probe
Touch the LP10B or LP25B probe tip to the circuit point under test. The probes LED’s indicate the logic level
or signals present when the circuit node is probed. The LED’s response is noted on pages 7 and 8.