Theory of Operation
P6249 4 GHz 5X Active Probe Instruction Manual 37
the oscilloscope, and information about the probe is passed to the
oscilloscope.
TEKPROBE Interface
The TEKPROBE interface provides a communication path between
the probe and the oscilloscope. Contact pins provide power, signal,
offset, and data transfer for the probe identification EEPROM.
VCC, +7 V Regulator
The +15 V input is regulated to +7 V to supply the IC, VCC.
Figure 11 shows the TEKPROBE interface pin functions. Refer to
your oscilloscope service documentation for more detailed
specifications.
Data
Clock
+5 V
+15 V
–15 V
–5V
Offset
Signal
Ground
Figure 11: TEKPROBE interface