User Manual

RedLab 1024LS User's Guide Functional Details
16
Ground terminals
The 8 ground (GND) connections are identical, and provide a common ground for all RedLab 1024LS functions.
Refer to the pinout diagram on page 3-14 for the location of the GND terminal pins.
Counter terminal
Pin 20 (CTR) is the input to the 32-bit external event counter. Refer to the pinout diagram on page 14 for the
location of this pin. The internal counter increments when the TTL levels transition from low to high. The
counter can count frequencies of up to 1 MHz.