-28-
INTRODUCTION - DIGITAL SECTION
The Digital Section of your XK-700-SEMI also has been pre-assembled and all of the circuits are on the main
PC board. To be certain all of the circuits are functioning correctly and to become familiar with the circuit, we
will do a circuit analysis. Voltage and resistance readings will be taken. If a problem exists, the troubleshooting
chart will be helpful.
The Digital Section of your trainer contains all of the necessary functions to do your digital designs. They consist
of a clock generator, two no bounce logic switches, eight LED indicator lamps and eight data switches.
SPECIFICATIONS
• Data switches, eight DPDT, Hi 5V, low 0V.
• Logic switches, two no bounce with complementary output.
“On” voltage level 2.8V min., “Off” voltage level 1V max.
Input impedance 100k
Ω.
• Eight LED readouts, 100k
Ω
input impedance.
• Clock frequency, 1Hz to 100kHz in 5 steps continuously variable.
• Clock amplitude, 5Vpp squarewave.
• Clock rise time, better than 100 nsec.
