Tektronix TCPA300 SERIES - Continuity Test of Multiple-Conductor Cable; Figure 3- 12: High-Impedance Source Current Ramp

Application Notes
TCPA300/400 Amplifiers and TCP300/400 Series Current Probes Instruction Manual
3-15
Pulse
generator
Inductance
Current
flow (i)
Resistance
L
Current
probe
Figure 3- 11: Measuring inductance with a high-impedance source
Time (t)
Current
flow (i)
36.8%
63.2%
100%
0
ττ
Figure 3- 12: High-impedance source current ramp
Continuity Test of Multiple -Conductor Cable
Single conductors in a multiconductor cable can be tested with the TCPA300 and
TCPA400. To check a conductor, clamp the current probe around the cable
bundle and check for a specific, known current signal. If there is no current or
the current is abnormally low, then the conductor has a continuity problem. If the
current is abnormally high, then the conductor may have a short to ground.